A liquid-gas combined power pulping and stirring device for mine filling

Abstract

The present invention relates to the technical field of pulping and stirring, and discloses a liquid-gas combined power pulping and stirring device for mine filling, comprising a stirring barrel for accommodating tailings slurry, a stirring assembly being arranged through the stirring barrel, Roots blowers and slurry pumps being symmetrically arranged on the barrel walls on both sides of the stirring barrel near the barrel bottom, a central bearing shaft being arranged at the output end of the stirring assembly, and the central bearing shaft extending into the stirring barrel, a foam collecting assembly being arranged on the shaft wall of the central bearing shaft near the barrel top of the stirring barrel, a foam discharge assembly being arranged on the barrel wall of the stirring barrel near the barrel top at a position corresponding to the foam collecting assembly, the central bearing shaft located in the stirring barrel is a hollow shaft roller, and a mixing assembly is arranged in a linear array in the central bearing shaft. While the tailings slurry is horizontally rotated and stirred by the mixing assembly, vertical rotation stirring is achieved, and the slurry and the material are fully turned over to avoid uneven mixing or even stratification.

Description

Technical Field

[0001] The invention relates to the technical field of pulping and stirring, and in particular to a liquid-gas combined power pulping and stirring device for mine filling. Background Art

[0002] In the process of mining, filling materials can fill the goaf, effectively control ground pressure activities to prevent surface collapse, and protect surface features from damage, thereby ensuring the safety and stability of the mining site. Mine filling fluid is a liquid material used to fill goaf, control ground subsidence and protect groundwater sources during mine mining. Among them, tailings slurry is a slurry made by adding water and stirring the tailings from the beneficiation plant. It is the most widely used filling fluid. When making tailings slurry, a large amount of crushed tailings, water, special slurry and curing agent need to be mixed together in proportion for stirring and slurrying. Since resin curing agents have the advantages of fast curing speed, high strength and not easy to crack, resins are usually considered for use as curing agents.

[0003] In the process of making and mixing mine filling fluid, a combined liquid-gas power method is usually used. The power of the hydraulic motor is transmitted to the slurry through the impeller by the principle of combined hydraulic and pneumatic drive to achieve slurry stirring. At the same time, high-pressure gas is injected into the mixing tank through the nozzle to provide additional stirring power, thereby achieving efficient slurry making and stirring of the slurry.

[0004] However, the prior art still has the following defects: 1. The existing stirring device usually achieves stirring by driving the blades to rotate in the same direction through the output end. Since the tailings filling liquid contains a variety of materials with different densities and the resin curing agent has the characteristic of high viscosity, the material and the curing agent cannot be fully mixed during the stirring process, resulting in uneven stirring and even easy stratification of the slurry.

[0005] 2. During the mixing process, the crushed slag powder particles are of different sizes and air is brought into the liquid to form bubbles, resulting in a cavitation effect. Since the density of the bubbles is less than the mixture of resin and curing agent, the bubbles will gradually rise to the surface of the liquid. The surface tension of the resin is low, making it difficult for the bubbles to break after rising to the surface of the liquid. As the bubbles continue to rise and aggregate, they will merge into larger bubbles and form a foam layer on the surface of the liquid. If the foam cannot be removed, cavities will form during the solidification process, thereby affecting the density and integrity of the solidified body, thereby reducing the mechanical properties and service life of the tailings filling. In addition, the foam gathered on the top is difficult to be discharged with the slurry during discharge, and is easily accumulated in the agitator cavity, making it difficult to clean. Summary of the invention

[0006] In view of the problems in the prior art that uneven stratification occurs during the stirring process, and foam will appear, which will affect the service life of the tailings filling and make it difficult to clean, a liquid-gas combined power pulping and stirring device for mine filling is proposed.

[0007] The purpose is to set a rotating component in the central bearing shaft so that the driving motor can drive the stirring blade to rotate horizontally and vertically at the same time, thereby increasing the contact between the material and the curing agent and improving the stirring efficiency; and to collect and scrape off the foam generated by the stirring through the foam collecting component and the foam discharging component installed on the central bearing shaft, so as to avoid the foam bubbles affecting the tailings filling effect and the foam remaining in the stirring barrel being difficult to clean.

[0008] The technical solution of the present invention is a liquid-gas combined power pulping and stirring device for mine filling, comprising a stirring barrel for containing tailings slurry, a stirring assembly is arranged through the stirring barrel, a Roots blower and a slurry pump are symmetrically arranged on the barrel walls on both sides of the stirring barrel near the barrel bottom, a central bearing shaft is arranged at the output end of the stirring assembly, and the central bearing shaft extends into the stirring barrel, a foam collecting assembly is arranged on the shaft wall of the central bearing shaft near the barrel top of the stirring barrel, a foam discharge assembly is arranged on the barrel wall of the stirring barrel near the barrel top at a position corresponding to the foam collecting assembly, the central bearing shaft located in the stirring barrel is a hollow shaft roller, and a mixing assembly is arranged in a linear array in the central bearing shaft;

[0009] The stirring assembly located in the stirring barrel is symmetrically and movably provided with a plurality of stirring blades in a linear array, and the mixing assembly located at the same height is transmission-connected with two adjacent symmetrical stirring blades, and the mixing assembly includes a fixed inner rod which is sealed and rotatably arranged at the top of the central bearing shaft, and the bottom end of the fixed inner rod movably penetrates the central bearing shaft and is arranged at the inner barrel bottom of the stirring barrel, and a driven gear disc is rotatably arranged on the rod wall of the fixed inner rod through a bearing, and two mixing rods are sealed and rotatably connected to the shaft wall of the central bearing shaft, and the two mixing rods are movably arranged to penetrate the shaft wall of the central bearing shaft, one end of the mixing rod away from the fixed inner rod is connected to the stirring blade, and a force-bearing gear is fixedly sleeved on the rod wall of the mixing rod close to one end of the fixed inner rod, and the two force-bearing gears are meshed with the driven gear disc; a speed increasing component is arranged between the central bearing shaft and the driven gear disc.

[0010] Furthermore, the speed increasing component includes an inner gear ring fixedly arranged on the inner shaft wall of the center bearing shaft, a speed increasing gear is fixedly sleeved on the driven gear plate, a support plate is fixedly sleeved on the rod wall of the fixed inner rod, a support rod is fixedly arranged on the support plate, a transmission gear is rotatably sleeved on the rod wall of the support rod near the top position, and the transmission gear is meshed with the inner gear ring and the speed increasing gear.

[0011] Furthermore, the foam collecting assembly includes a foam collecting ring fixedly sleeved on the wall of the center bearing shaft, the outer ring wall of the foam collecting ring is symmetrically provided with foam collecting parts, the foam collecting parts include a foam collecting elbow arranged on the outer ring wall of the foam collecting ring, the input port of the foam collecting elbow is provided with a foam collecting bucket, and the liquid level height of the tailings slurry contained in the mixing barrel is not more than 5 cm from the lowest point of the foam collecting elbow.

[0012] Furthermore, the foam collecting bent pipe is provided with bending point 1 and bending point 2, wherein the bending point 2 is higher than the bending point 1, and the bending point 1 is located on the left side of the bending point 2 in the horizontal direction, and the bending point 1 and the bending point 2 are respectively inlaid with elastic filters.

[0013] Furthermore, the bottom surface and both sides of the foam collecting bucket are provided with a filter hole for filtering the liquid, and the distance between the bottom surface of the foam collecting bucket and the liquid surface of the tailings slurry is no more than 3 cm, and the bottom surface of the foam collecting bucket is higher than the bending point one, and the bottom tube wall of the foam collecting bent pipe away from the end of the central bearing shaft is provided with a filter hole two for filtering the liquid.

[0014] Furthermore, the foam discharge assembly includes an arc-shaped foam discharge port opened on the wall of the mixing barrel, a guide strip is connected to the inner barrel wall of the mixing barrel, the pipe port of the foam collecting elbow away from the central bearing shaft is rotatably connected to the foam discharge plate through a rotating seat, a torsion spring is arranged in the rotating seat, and a pushing component is arranged on the annular side wall of the foam discharge plate;

[0015] The guide strip includes a vertical arc segment 1 and a horizontal arc segment 2 connected to each other. The vertical arc segment 1 is in an arc shape, and cooperates with the pushing component to drive the froth discharge plate to rotate 180 degrees. The horizontal arc segment 2 is located directly below the froth discharge port, and the connection between the vertical arc segment 1 and the horizontal arc segment 2 is set to be an arc shape.

[0016] Furthermore, the pushing component includes a pushing tube arranged on the annular side wall of the froth discharge plate, a spring is arranged on the annular side wall of the froth discharge plate inside the pushing tube, a pushing rod is arranged at the other end of the spring, the pushing rod extends to the outside of the pushing tube at one end away from the spring, a pushing wheel is rotatably arranged on the rod wall near the end position of the pushing rod outside the pushing tube, and the pushing wheel is arranged at a position corresponding to the guide bar.

[0017] Furthermore, the Roots blower is connected to the barrel wall of the mixing barrel near the bottom of the barrel through an air supply pipe, the barrel top of the mixing barrel is provided with an air outlet, the feed end of the slurry pump is connected to the barrel wall of the mixing barrel near the bottom of the barrel through a suction pipe, and the discharge end of the slurry pump is connected to the barrel wall of the mixing barrel near the top of the barrel through a discharge pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The mixing component can realize vertical rotation stirring while driving the stirring component to perform horizontal rotation stirring, so as to fully flip the slurry and the material, thereby increasing the contact area between the slurry and the material. The speed-increasing component can accelerate the speed of vertical stirring, thereby improving the mixing effect of stirring and avoiding uneven mixing or even stratification.

[0020] 2. The foam collecting assembly and the foam discharging assembly arranged on the central bearing shaft can collect the bubbles and foam generated during the stirring of the ore slurry and then discharge them in a centralized manner, thereby avoiding the accumulation of foam and thus affecting the stirring of the material and the slurry, affecting the density and integrity of the tailings slurry after solidification, and avoiding the foam remaining on the inner wall of the mixing barrel after unloading, which makes cleaning difficult.

[0021] 3. By setting up two sections of foam collecting elbows with different upper and lower heights, it is more convenient to distinguish between the froth and the slurry, so that the froth can be discharged after being separated, and the slurry can be discharged for circulation and stirring, so as to avoid the discharge of slurry affecting the mixing effect of tailings slurry. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the top plan structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation structure of the mixing component and the speed increasing component of the present invention;

[0027] Figure 6 It is a schematic cross-sectional structure diagram of the mixing component and the speed increasing component of the present invention;

[0028] Figure 7 It is a schematic diagram of the side planar structure of the foam collecting component and the foam discharging component of the present invention;

[0029] Figure 8 It is a schematic diagram of the top plan structure of the foam collecting component and the foam discharging component of the present invention;

[0030] Fig. 9 It is a schematic diagram of the flow structure of the ore slurry and the froth in the froth collecting assembly of the present invention;

[0031] Fig.10It is a schematic diagram of the installation position of the guide strip of the present invention on the inner wall of the mixing barrel;

[0032] Fig.11 for Fig.10 A schematic diagram of the enlarged structure at A in the middle;

[0033] Fig.12 This is a schematic diagram of the installation structure of the foam discharge assembly of the present invention;

[0034] Fig.13 for Fig.12 Schematic diagram of the enlarged structure at point B in the middle.

[0035] In the figure: 1, mixing barrel; 2, mixing assembly; 21, central bearing shaft; 22, mixing blade; 3, foam collecting assembly; 31, foam collecting ring; 32, foam collecting elbow; 321, bending point 1; 322, bending point 2; 33, foam collecting bucket; 331, filter hole 1; 332, filter hole 2; 34, elastic filter; 4, foam discharge assembly; 41, foam discharge port; 42, guide strip; 421, vertical arc segment 1; 422, horizontal arc segment 2; 43, rotating Moving seat; 44, foam discharge plate; 5, mixing assembly; 51, fixed inner rod; 52, driven gear plate; 53, mixing rod; 54, force gear; 6, pushing component; 61, pushing tube; 62, spring; 63, pushing rod; 64, pushing wheel; 7, speed increasing component; 71, inner gear ring; 72, speed increasing gear; 73, support plate; 74, transmission gear; 8, Roots blower; 9, slurry pump; 10, air supply pipe; 11, suction pipe; 12, discharge pipe. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] Example 1, reference Figure 1-Figure 6, which is the first embodiment of the present invention, provides a liquid-gas combined power pulping and stirring device for mine filling, including a stirring barrel 1 for containing tailings slurry, the barrel top and barrel bottom of the stirring barrel 1 are respectively equipped with an inlet and a discharge port, a stirring assembly 2 is installed through the stirring barrel 1, and roots blowers 8 and slurry pumps 9 are symmetrically installed on the barrel walls on both sides of the stirring barrel 1 near the barrel bottom, the output end of the stirring assembly 2 is connected to a center bearing shaft 21 through a coupling, and the bottom end of the center bearing shaft 21 extends into the stirring barrel 1, a foam collecting assembly 3 is installed on the shaft wall of the center bearing shaft 21 near the barrel top of the stirring barrel 1, and a foam discharge assembly 4 is installed on the barrel wall of the stirring barrel 1 near the barrel top at a position corresponding to the foam collecting assembly 3, the center bearing shaft 21 located in the stirring barrel 1 is a hollow shaft roller, and a mixing assembly 5 is installed in a linear array in the center bearing shaft 21; the stirring assembly 2 located in the stirring barrel 1 is symmetrically and movably installed in a linear array A plurality of stirring blades 22, a mixing assembly 5 located at the same height is transmission-connected to two adjacent symmetrical stirring blades 22, the mixing assembly 5 comprises a fixed inner rod 51 which is sealed and rotatably connected to the top of the center bearing shaft 21, and the bottom end of the fixed inner rod 51 movably penetrates the bottom of the center bearing shaft 21 and is connected to the inner barrel bottom of the mixing barrel 1, a driven gear disc 52 is rotatably connected to the rod wall of the fixed inner rod 51 through a bearing, two symmetrically arranged mixing rods 53 are sealed and rotatably connected to the shaft wall of the center bearing shaft 21, both mixing rods 53 are movably arranged to penetrate the shaft wall of the center bearing shaft 21, one end of the mixing rod 53 away from the fixed inner rod 51 is connected to the stirring blade 22, and a force-bearing gear 54 is fixedly sleeved on the rod wall of the mixing rod 53 near one end of the fixed inner rod 51, and the two force-bearing gears 54 are meshed with the driven gear disc 52; a speed increasing component 7 is arranged between the center bearing shaft 21 and the driven gear disc 52.

[0038] Specifically, a proper amount of tailings slurry is poured into the mixing barrel 1 from the feed port, and the height of the tailings slurry in the mixing barrel 1 is observed through a transparent observation mirror until it reaches the set height, and the mixing assembly 2 is started to drive the central bearing shaft 21 to rotate. The rotating central bearing shaft 21 can drive the inner wall speed increasing component 7 to rotate, thereby driving the driven gear plate 52 to accelerate the rotation under the action of the speed increasing component 7, and driving the two force bearing gears 54 to rotate under the meshing action. Because the two ends of the mixing rod 53 are respectively connected to the mixing blade 22 and the force bearing gear 54, the rotating force bearing gear 54 can drive The dynamic mixing rod 53 and the stirring blade 22 rotate, so that the stirring blade 22 can rotate vertically in the same direction as the force-bearing gear 54, so as to realize secondary vertical stirring of the material, thereby increasing the contact surface of the material stirring, increasing the stirring effect, and avoiding uneven stirring or even stratification of the material. During the stirring process, the foam collecting component 3 is used to scrape and collect the foam on the upper surface of the slurry and then discharge it through the foam discharging component 4, so as to avoid the foam affecting the mixing degree of the stirring and thus affecting the life of the final filling, and also avoid the foam being difficult to discharge and accumulating inside the stirring barrel 1, which makes it difficult to clean.

[0039] The stirring assembly 2 includes a driving motor fixedly mounted at the center of the top of the stirring barrel 1, a center bearing shaft 21 installed in the stirring barrel 1 through a coupling, an output end of the driving motor is fixedly connected to the top of the center bearing shaft 21, and a stirring blade 22 is installed on the shaft wall of the center bearing shaft 21.

[0040] Specifically, after a proper amount of ore slurry is poured into the stirring barrel 1, the driving motor is started to drive the central bearing shaft 21 in the stirring barrel 1 to rotate, thereby driving the stirring blades 22 to rotate, so as to stir the ore slurry.

[0041] Reference Figure 5-Figure 6 The speed increasing component 7 includes an inner gear ring 71 fixedly connected to the inner shaft wall of the center bearing shaft 21, a speed increasing gear 72 is fixedly sleeved on the driven gear plate 52, a support plate 73 is fixedly sleeved on the rod wall of the fixed inner rod 51, a support rod is fixedly connected to the support plate 73, a transmission gear 74 is rotatably sleeved on the rod wall of the support rod near the top position, and the transmission gear 74 is meshed with the inner gear ring 71 and the speed increasing gear 72.

[0042] Specifically, when the center bearing shaft 21 rotates, the inner gear ring 71 on the inner shaft wall of the center bearing shaft 21 is driven to rotate. The differential speed between the driven gear plate 52 and the center bearing shaft 21 is increased by the transmission gear 74 between the inner gear ring 71 and the speed-increasing gear 72. When the center bearing shaft 21 drives the stirring blades 22 to rotate, the driven gear plate 52 can accelerate the rotation of the force gears 54 on both sides, so that the stirring blades 22 on both sides can rotate in the horizontal direction and in the vertical direction at the same time, avoiding the relative stillness between the force gear 54 and the driven gear plate 52, thereby increasing the speed of vertical stirring.

[0043] During use, when the stirring component 2 is started to stir the tailings slurry, the stirring component 2 drives the central bearing shaft 21 to rotate, thereby driving the stirring blades 22 on the central bearing shaft 21 to rotate horizontally. At the same time, the rotating central bearing shaft 21 drives the transmission gear 74 to rotate under the action of the inner gear ring 71, and the transmission gear 74 drives the speed-increasing gear 72 to rotate, thereby driving the driven gear plate 52 to rotate, and the two force gears 54 are driven to rotate under the action of gear meshing. Because the force gear 54 is installed at the end of the mixing rod 53 located in the central bearing shaft 21, it drives the mixing rod 53 to rotate vertically, thereby driving the stirring blades 22 to rotate vertically, and can stir vertically while the stirring blades 22 rotate horizontally, and the use of the speed-increasing component 7 can increase the speed of vertical rotation, thereby improving the mixing effect between the tailings slurries and avoiding uneven mixing.

[0044] Example 2, reference Figure 1-7, which is the second embodiment of the present invention, which is different from the first embodiment in that: the foam collecting assembly 3 includes a foam collecting ring 31 fixedly sleeved on the shaft wall of the center bearing shaft 21, and the foam collecting parts are symmetrically installed on the outer ring wall of the foam collecting ring 31; the foam collecting parts include a foam collecting elbow 32 connected to the outer ring wall of the foam collecting ring 31, and the input port of the foam collecting elbow 32 is connected to a funnel-shaped foam collecting bucket 33. The liquid level of the tailings slurry contained in the mixing barrel 1 is no more than 5 cm away from the lowest point of the foam collecting elbow 32, so as to prevent the ore slurry from entering the foam collecting elbow 32. A transparent observation mirror is embedded on the barrel wall of the mixing barrel 1, and the liquid level in the mixing barrel 1 is observed through the observation mirror.

[0045] Specifically, when the mixing component 5 stirs the tailings slurry, a foam layer is generated, and the rotating central bearing shaft 21 drives the foam collecting component to rotate through the foam collecting ring 31. The funnel-shaped foam collecting bucket 33 can scrape and collect the foam generated on the surface of the slurry when it is stirred. During the high-speed rotation, the collected foam enters the foam collecting elbow 32 due to the action of inertia. During the stirring process, the foam on the upper surface of the slurry is scraped and collected by using the foam collecting component 3 and then discharged through the foam discharge component 4, so as to avoid the foam affecting the mixing degree of the stirring and thus affecting the life of the final filling. It can also avoid the foam being difficult to discharge and accumulating inside the stirring barrel 1, making it difficult to clean.

[0046] Reference Fig. 9 The foam collecting bent pipe 32 is provided with a bending point 1 321 and a bending point 2 322 . The bending point 2 322 is higher than the bending point 1 321 , and the bending point 1 321 is located on the left side of the bending point 2 322 in the horizontal direction. The bending point 1 321 and the bending point 2 322 are respectively inlaid with elastic filters 34 .

[0047] Specifically, when the collected froth reaches the elastic filter 34 through the bending point 1 321, the slurry collected along with the froth is filtered through the elastic filter 34. The elastic filter 34 is used as a dividing line of different heights, so that the slurry can be concentrated at a lower position, which is convenient for the slurry to flow out of the elastic filter 34, thereby falling into the original tailings slurry for circulation and stirring. However, the froth cannot penetrate the elastic filter 34 due to its light weight and small inertia. The centrifugal force generated by the froth collecting elbow 32 during the rotation process can easily throw the froth at the bending point 1 321 along the smooth inner wall to the bending point 2 322. The arrangement is conducive to better distinguishing the foam and the slurry, thereby avoiding discharging the slurry together, resulting in too little slurry affecting the mixing effect, and the bending point 1 321 and the bending point 2 322 are arranged at different heights in the vertical direction. Since the mass of the mixed liquid is heavier than the mass of the foam, the mixed liquid cannot easily enter the bending point 2 322. The bending point 1 321 is located on the left side of the bending point 2 322 in the horizontal direction, and in order to prevent the mixed liquid from easily entering the bending point 2 322, that is, to avoid the mixed liquid from entering the rear part of the foam collecting elbow 32 to the greatest extent, so that the mixed liquid can be discharged from the elastic filter 34 as much as possible.

[0048] Reference Figure 7 The bottom surface and both sides of the foam collecting bucket 33 are provided with a filter hole 331 for filtering the liquid, and the distance between the bottom surface of the foam collecting bucket 33 and the liquid surface of the tailings slurry is no more than 3 cm, and the bottom surface of the foam collecting bucket 33 is higher than the bending point 321, and a filter hole 332 for filtering the liquid is provided on the bottom tube wall of the foam collecting bent pipe 32 at one end away from the central bearing shaft 21.

[0049] Specifically, when the foam collecting bucket 33 is used to scrape and collect the foam on the upper surface of the mineral slurry, the filter hole 1 331 can initially filter the slurry preliminarily collected together with the foam, and the mixed liquid that fails to be discharged from the elastic filter 34 in time during the rotation and enters the rear part of the foam collecting elbow 32 together with the foam due to the centrifugal force of the rotation is discharged again through the filter hole 2 332.

[0050] Reference Figure 1-Figure 13The foam discharge assembly 4 includes an arc-shaped foam discharge port 41 opened on the barrel wall of the mixing barrel 1. The foam discharge port 41 is connected to a collecting barrel through a foam discharge pipe, and the discharged floating foam is transmitted to the collecting barrel on one side of the mixing barrel 1 through the foam discharge pipe. A guide strip 42 is connected to the inner barrel wall of the mixing barrel 1. The end of the foam collecting elbow 32 away from the central bearing shaft 21 is rotatably connected to a foam discharge plate 44 through a rotating seat 43. A torsion spring is arranged in the rotating seat 43. A pushing component 6 is installed on the annular side wall of the foam discharge plate 44. The automatic reset force of the torsion spring , so that the foam discharge plate 44 is continuously pressed against the pipe mouth of the foam collecting bent pipe 32 without being subjected to the thrust of the pushing component 6; the guide strip 42 includes a vertical arc segment 1 421 and a horizontal arc segment 2 422 connected to each other, the vertical arc segment 1 421 is in an arc shape, and the vertical arc segment 1 421 cooperates with the pushing component 6 to drive the foam discharge plate 44 to rotate one hundred and eighty degrees, the horizontal arc segment 2 422 is located directly below the foam discharge port 41, and the connection between the vertical arc segment 1 421 and the horizontal arc segment 2 422 is set to be an arc shape.

[0051] Specifically, when the foam collecting curved pipe 32 is rotating, the foam discharging plate 44 is driven to rotate through the rotating seat 43. Under the action of the torsion spring, the foam discharging plate 44 blocks the foam collecting curved pipe 32 in the initial state to prevent the floating foam entering the foam collecting curved pipe 32 from directly contacting the side wall of the mixing barrel 1, thereby causing the floating foam to adhere to the side wall of the mixing barrel 1. The guide bar 42 is installed just below the foam discharging port 41. When the foam collecting curved pipe 32 moves to the bottom of the vertical arc segment 421 on the guide bar 42, under the guiding action of the vertical arc segment 421, the pushing component 6 moves along the direction of the vertical arc segment 421. At this time, the foam discharging plate 44 starts to rotate, and the floating foam can be initially discharged into the foam discharging port 41 in small quantities. , until the pushing component 6 gradually moves to the horizontal arc segment 422, at which time the rotation angle of the foam discharge plate 44 gradually becomes one hundred and eighty degrees. When it reaches the horizontal arc segment 422, the end of the foam collecting elbow 32 is fully opened. At this time, the floating foam can be directly discharged into the foam discharge port 41. By limiting the shape of the guide strip 42, the foam discharge plate 44 can be driven to guide and move, thereby realizing the opening of the end of the foam collecting elbow 32. When the pushing component 6 moves to the end of the guide strip 42, the pushing component 6 is no longer restricted. Under the restoring force of the torsion spring, the foam discharge plate 44 re-blocks the foam collecting elbow 32 to prevent the floating foam from adhering to the barrel wall of the mixing barrel 1 during the rotation of the foam.

[0052] Reference Figure 10-13The pushing component 6 includes a pushing tube 61 connected to the annular side wall of the froth discharge plate 44, a spring 62 is connected to the annular side wall of the froth discharge plate 44 located inside the pushing tube 61, and the other end of the spring 62 is connected to a pushing rod 63, and the pushing rod 63 extends to the outside of the pushing tube 61 at one end away from the spring 62, and a pushing wheel 64 is rotatably connected to the rod wall of the pushing rod 63 located outside the pushing tube 61 near the end position, and the pushing wheel 64 is arranged corresponding to the position of the guide strip 42.

[0053] Specifically, when the pushing wheel 64 on the pushing rod 63 moves to the vertical arc segment 1 421 on the guide bar 42, the pushing wheel 64 enters the bottom of the guide bar 42, and under the guiding action of the vertical arc segment 1 421, the pushing rod 63 pushes the pushing tube 61 and the foam discharge plate 44 to rotate around the rotating seat 43. Even if the torsion spring is deformed and pushes the foam discharge plate 44 away, when the pushing wheel 64 rotates to the horizontal arc segment 2 422 on the guide bar 42, the spring 62 will be stretched by the pushing rod 63, in order to enable the pushing wheel 64 to drive the foam discharge plate 44 to continue to rotate 180 degrees under the guiding action of the guide bar 42, so that the foam discharge plate 44 can make the foam collecting bent pipe 32 fully open, so as to facilitate the discharge of floating foam from the foam discharge port 41, and the floating foam is transmitted to the collecting bucket through the foam discharge pipe in the foam discharge port 41, and the height of the foam discharge port 41 is higher than the horizontal plane of the mineral slurry, so that during the stirring process, the mineral slurry will not overflow from the foam discharge port 41.

[0054] Reference Figure 1-Figure 2 The Roots blower 8 is connected to the barrel wall of the mixing barrel 1 near the barrel bottom through the air supply pipe 10, the barrel top of the mixing barrel 1 is provided with an air outlet, the feeding end of the slurry pump 9 is connected to the barrel wall of the mixing barrel 1 near the barrel bottom through the suction pipe 11, and the discharging end of the slurry pump 9 is connected to the barrel wall of the mixing barrel 1 near the barrel top through the discharging pipe 12.

[0055] Specifically, during the stirring process, a Roots blower 8 is used to compress high-pressure air and deliver it to the stirring barrel 1 through an air supply pipe 10, thereby providing additional stirring power and increasing the stirring effect. Part of the stirred slurry is extracted from the bottom of the stirring barrel 1 through a suction pipe 11, and a slurry pump 9 is used to pump it to the top of the stirring barrel 1 through a discharge pipe 12, and then injected along the tangent of the tank wall for circulating stirring, thereby improving the stirring effect of the slurry.

[0056] During use, the central bearing shaft 21 drives the foam collecting ring 31 and the foam collecting parts symmetrically installed on the outer ring wall of the foam collecting ring 31 to rotate, thereby driving the foam collecting elbow 32 and the foam collecting bucket 33 to rotate, and the foam collecting bucket 33 is used to scrape and collect the foam on the surface of the material. At this time, the slurry initially collected together with the foam is filtered through the filter hole 1 331. At this time, the collected foam passes through the foam collecting bucket 33 to reach the foam collecting elbow 32, and the slurry collected together with the foam passes through the elastic filter screen 34 set at the two bending points on the foam collecting elbow 32, and circulates The foam collected by the foam collecting elbow 32 is filtered through the second filter hole 332 when passing through the end of the foam collecting elbow 32. When the foam collecting elbow 32 rotates to be close to the foam discharge port 41, the rotating foam collecting elbow 32 drives the foam discharge plate 44 installed at the end through the rotating seat 43 to rotate, thereby driving the push pipe 61 and the push rod 63 on the foam discharge plate 44 to rotate, thereby driving the push wheel 64 to rotate. When the push wheel 64 moves to the bottom of the vertical arc segment 1 421 on the guide bar 42, the push wheel 64 moves in the direction of the vertical arc segment 1 421, and the foam discharge plate 44 starts to rotate. When it reaches the horizontal arc segment 2 422 on the guide bar 42, the end of the foam collecting elbow 32 is fully opened. When the push wheel 64 is separated from the horizontal arc segment 2 422, the push rod 63 at the bottom of the push wheel 64 is no longer squeezed and is pushed upward by the action of the spring 62. At the same time, the foam discharge plate 44 is reset by the action of the torsion spring. At this time, the foam collecting plate 44 completely blocks the end of the foam collecting elbow 32, and seals the foam collecting elbow 32. The foam collecting assembly 3 and the foam discharging assembly 4 arranged on the central bearing shaft 21 can collect the bubbles and foam generated during the stirring of the ore slurry, and then centrally process and discharge them, so as to avoid the foam remaining on the inner wall of the mixing barrel 1 after unloading, which makes cleaning difficult. Moreover, by setting the foam collecting elbow 32 to different heights, it is more convenient to distinguish between the foam and the slurry, so as to avoid the discharge of the slurry affecting the mixing effect of the tailings slurry. The rest of the structure is the same as that of Example 1.

[0057] Based on Examples 1-2, the working principle of the present invention is as follows: pour an appropriate amount of tailings slurry into the mixing barrel 1 from the feed port, observe the height of the tailings slurry in the mixing barrel 1 through a transparent observation mirror until it reaches the set height, and then start the mixing assembly 2 to drive the mixing blades 22 to rotate horizontally. At the same time, the rotating central bearing shaft 21 drives the transmission gear 74 to rotate under the action of the inner gear ring 71, and the transmission gear 74 drives the speed increasing gear 72 to rotate, thereby driving the driven gear plate 52 to rotate, and driving the two force gears 54 to rotate under the action of gear meshing, thereby driving the mixing rod 53 to rotate vertically, thereby driving the mixing blades 22 to rotate vertically. While the central bearing shaft 21 rotates to drive the mixing blades 22 to stir, the central bearing shaft 21 drives the foam collecting ring 31 and the foam collecting components symmetrically installed on the outer ring wall of the foam collecting ring 31 to rotate, and the foam collecting bucket 33 is used to scrape and collect the floating foam on the surface of the material. The collected floating foam reaches the foam collecting bent pipe 32 through the foam collecting bucket 33, and the slurry collected together with the floating foam passes through the elastic filter screen 34 and the filter hole 232 at the end of the foam collecting bent pipe 32 for filtration. When the foam collecting bent pipe 32 rotates to be close to the foam discharge port 41, the rotating foam collecting bent pipe 32 drives the foam discharge plate 44 installed at the end through the rotating seat 43 to rotate, thereby driving the pushing pipe 61, the pushing rod 63 and the pushing wheel 64 on the foam discharge plate 44 to rotate. When the pushing wheel 64 rotates to the bottom of the vertical arc segment 1 421 on the guide bar 42, the foam discharge plate 44 starts to rotate. When it reaches the horizontal arc segment 2 422 on the guide bar 42, it presents a state of fully opening the end of the foam collecting bent pipe 32. When the pushing wheel 64 disengages from the horizontal arc segment 2 422, it drives the foam discharge plate 44 to reset under the action of the torsion spring. At this time, the foam discharge plate 44 completely blocks the end of the foam collecting bent pipe 32 to seal the foam collecting bent pipe 32.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A liquid-gas combined power pulping and stirring device for mine filling, comprising a stirring barrel for containing tailings slurry, a stirring assembly is arranged through the stirring barrel, and roots blowers and slurry pumps are symmetrically arranged on the barrel walls on both sides of the stirring barrel near the barrel bottom, characterized in that: A central bearing shaft is provided at the output end of the stirring assembly, and the central bearing shaft extends into the stirring barrel, a foam collecting assembly is provided on the shaft wall of the central bearing shaft near the top of the stirring barrel, and a foam discharging assembly is provided on the barrel wall of the stirring barrel near the top of the barrel at a position corresponding to the foam collecting assembly, the central bearing shaft located in the stirring barrel is a hollow shaft roller, and a mixing assembly is provided in a linear array in the central bearing shaft; A plurality of stirring blades are symmetrically arranged in a linear array on the stirring assembly in the stirring barrel, and the mixing assembly at the same height is transmission-connected to two adjacent symmetrical stirring blades; The foam collecting assembly comprises a foam collecting ring fixedly sleeved on the shaft wall of the central bearing shaft, and foam collecting parts are symmetrically arranged on the outer ring wall of the foam collecting ring, and the foam collecting parts comprise a foam collecting elbow arranged on the outer ring wall of the foam collecting ring; The foam collecting elbow is provided with a bending point 1 and a bending point 2, the bending point 2 is higher than the bending point 1, and the bending point 1 is located on the left side of the bending point 2 in the horizontal direction, and the bending point 1 and the bending point 2 are respectively inlaid with elastic filters; The foam discharge assembly includes an arc-shaped foam discharge port opened on the wall of the mixing barrel, a guide strip is connected to the inner barrel wall of the mixing barrel, and the pipe port of the foam collecting curved pipe away from the central bearing shaft is rotatably connected to the foam discharge plate through a rotating seat, a torsion spring is arranged in the rotating seat, and a pushing component is arranged on the annular side wall of the foam discharge plate; The guide strip includes a vertical arc segment 1 and a horizontal arc segment 2 connected to each other. The vertical arc segment 1 is in an arc shape, and cooperates with the pushing component to drive the froth discharge plate to rotate 180 degrees. The horizontal arc segment 2 is located directly below the froth discharge port, and the connection between the vertical arc segment 1 and the horizontal arc segment 2 is set to be an arc shape.

2. The liquid-gas combined power pulping and stirring device for mine filling according to claim 1 is characterized in that: The mixing assembly includes a fixed inner rod which is sealed and rotatably arranged at the top of the center bearing shaft, and the bottom end of the fixed inner rod movably penetrates the center bearing shaft and is arranged at the bottom of the inner barrel of the mixing barrel, a driven gear disc is rotatably arranged on the rod wall of the fixed inner rod through a bearing, two mixing rods are sealed and rotatably connected to the shaft wall of the center bearing shaft, both mixing rods movably penetrate the shaft wall of the center bearing shaft, one end of the mixing rod away from the fixed inner rod is connected to the mixing blade, and a force-bearing gear is fixedly sleeved on the rod wall of the mixing rod near one end of the fixed inner rod, and the two force-bearing gears are meshed with the driven gear disc; a speed increasing component is arranged between the center bearing shaft and the driven gear disc.

3. The liquid-gas combined power pulping and stirring device for mine filling according to claim 2 is characterized in that: The speed increasing component includes an inner gear ring fixedly arranged on the inner shaft wall of the center bearing shaft, a speed increasing gear is fixedly sleeved on the driven gear plate, a support plate is fixedly sleeved on the rod wall of the fixed inner rod, a support rod is fixedly arranged on the support plate, a transmission gear is rotatably sleeved on the rod wall of the support rod near the top position, and the transmission gear is meshed with the inner gear ring and the speed increasing gear.

4. The liquid-gas combined power pulping and stirring device for mine filling according to claim 1 is characterized in that: The inlet of the foam collecting elbow is provided with a foam collecting bucket, and the liquid level of the tailings slurry in the mixing barrel is not more than 5 cm from the lowest point of the foam collecting elbow.

5. The liquid-gas combined power pulping and stirring device for mine filling according to claim 4 is characterized in that: The bottom surface and both sides of the foam collecting bucket are provided with a filter hole for filtering the liquid, and the distance between the bottom surface of the foam collecting bucket and the liquid surface of the tailings slurry is no more than 3 cm, and the bottom surface of the foam collecting bucket is higher than the bending point one, and a filter hole two for filtering the liquid is provided on the bottom pipe wall of the foam collecting bent pipe away from the end of the central bearing shaft.

6. The liquid-gas combined power pulping and stirring device for mine filling according to claim 1 is characterized in that: The pushing component includes a pushing tube arranged on the annular side wall of the froth discharge plate, a spring is arranged on the annular side wall of the froth discharge plate inside the pushing tube, a pushing rod is arranged at the other end of the spring, the end of the pushing rod away from the spring extends outside the pushing tube, a pushing wheel is rotatably arranged on the rod wall near the end position of the pushing rod outside the pushing tube, and the pushing wheel is arranged corresponding to the position of the guide strip.

7. The liquid-gas combined power pulping and stirring device for mine filling according to claim 1 is characterized in that: The Roots blower is connected to the barrel wall of the mixing barrel near the bottom of the barrel through an air supply pipe, an air outlet is provided on the top of the mixing barrel, the feed end of the slurry pump is connected to the barrel wall of the mixing barrel near the bottom of the barrel through a suction pipe, and the discharge end of the slurry pump is connected to the barrel wall of the mixing barrel near the top of the barrel through a discharge pipe.

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