Automatic reagent feeding device based on secondary flotation of slime

Abstract

The present application relates to the technical field of coal mining, in particular to an automatic dosing device based on slime secondary flotation, comprising a fixing frame and a mounting frame, and a dosing pipe is arranged between the fixing frame and the mounting frame. The present application adjusts the space between the bottom of the quantitative piston and the inner wall bottom of the dosing tank to accurately control the addition amount of the medicament by setting the quantitative piston in the dosing tank and controlling the quantitative piston according to the required dosing amount of the slime secondary flotation. Meanwhile, the medicament in the dosing tank is dispersed and pressurized by using the air pump and the mixing frame, so that the medicament in the dosing tank can be injected into the inside of the slurry at high pressure. When dosing the inside of the slurry, the inside of the slurry is aerated by using two air outlets at the top of the air pipe, and the medicament is atomized and sprayed into the inside of the slurry by two atomizing nozzles, so as to improve the effect of the medicament on the slurry, make the medicament more efficiently act on the surface of the slurry, and improve the flotation effect of the coal slurry.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining, in particular to an automatic dosing device based on secondary flotation of coal slime. BACKGROUND

[0002] In the coal slime flotation production process, the collector and the frother are key reagents for the production of the flotation system, which directly relates to the product quality. The original design of reagent addition is manual control, at least 2 people are needed on site for one shift, the average moving distance is about 20 kilometers per shift, the labor intensity is large, and the system can be adjusted and stabilized for about 20 minutes when starting or changing coal, the lag time is long, which seriously affects the stability of product quality. Manual control of the amount of reagent is difficult to accurately control, which easily causes waste of reagents and directly affects the product quality. The main components of the collector and the frother are oil and alcohol, which are both chemical reagents. The production environment has a pungent smell, and the volatilization of the reagents and long-term contact can also cause certain harm to the workers' bodies.

[0003] Therefore, we propose an automatic dosing device based on secondary flotation of coal slime. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application provides an automatic dosing device based on secondary flotation of coal slime, which is used to realize automatic dosing of coal slime in the secondary flotation process and improve the effect of reagents on coal slime.

[0005] To achieve the above purpose, the technical scheme is as follows: an automatic dosing device based on secondary flotation of coal slime, comprising a fixed frame and a mounting frame, a dosing pipe is arranged at the bottom of the fixed frame, and the bottom end of the dosing pipe is connected with the top of the mounting frame, a dosing tank is arranged in the fixed frame, and a quantitative piston is arranged in the dosing tank, a servo cylinder is arranged at the top of the inner wall of the dosing tank, and the driving end of the servo cylinder is connected with the top of the quantitative piston, a gas pump is arranged at the top of the quantitative piston, and a mixing frame is arranged at the bottom of the quantitative piston, the output end of the gas pump is communicated with the inside of the mixing frame through a gas guide pipe, a plurality of rotating frames are arranged at the bottom of the mixing frame, and a mixing trough is arranged in each rotating frame, a plurality of turbines matched with the rotating frames are arranged in the mixing frame, and a connecting rod is arranged on one side of the turbine, one side of the connecting rod is connected with one side of the rotating frame, and the other side of the rotating frame is rotatably connected with one side of the mixing frame.

[0006] A plurality of gas outlets are arranged on the inner wall of the mixing trough, and the inside of each gas outlet is communicated with the inside of the mixing frame.

[0007] Preferably, four servo cylinders are arranged at the top of the inner wall of the dosing tank, and the four servo cylinders are arranged at equal angles about the central axis of the dosing tank.

[0008] Preferably, the plurality of rotating frames are arranged at equal angles with respect to the central axis of the mixing frame, and the plurality of rotating frames are arranged at the bottom of the mixing frame.

[0009] Preferably, the mixing frame is composed of a plurality of connecting pipes, and one end of each adjacent connecting pipe is rotatably connected to the two sides of the rotating frame.

[0010] Preferably, the top of the fixed frame is provided with four metering pumps, the feed end of each of the four metering pumps is provided with a medicine feeding pipe, the discharge end of each of the four metering pumps is provided with a medicine feeding pipe, the bottom end of each of the four medicine feeding pipes extends to the inside of the fixed frame, and the bottom end of each of the four medicine feeding pipes is connected to the lower part inside the medicine feeding tank.

[0011] Preferably, the bottom of the medicine feeding tank is provided with a discharge pipe, the bottom end of the discharge pipe extends to the bottom of the fixed frame, the bottom end of the discharge pipe is connected to the top of the medicine feeding pipe, the bottom end of the medicine feeding pipe is provided with a feeding frame, and the bottom of the feeding frame is provided with two atomizing nozzles.

[0012] Preferably, the inside of the mounting frame is provided with a material passing frame, the inside of the material passing frame is rotatably provided with a material turning frame, one side of the mounting frame is provided with a servo motor, the output end of the servo motor is connected to one side of the material turning frame, both sides of the material passing frame are provided with material passing openings, the bottom of the feeding frame is connected to the top of the material passing frame, and the bottom of each of the two atomizing nozzles extends to the inside of the material passing frame.

[0013] Preferably, the inside of the material turning frame is provided with a mounting groove, and the inside of the mounting groove is provided with an air blowing pipe, one end of the air blowing pipe extends through the material passing frame and the mounting frame and extends to the outside of the mounting frame, and both sides of the top of the air blowing pipe are provided with air blowing openings.

[0014] Preferably, both sides of the mounting frame are provided with material guide openings, air blowing plates are arranged on the upper and lower sides of the inner walls of the two material guide openings, air blowing openings are arranged in the interiors of the two air blowing plates, one side of the mounting frame is provided with a gas guide frame, one side of the gas guide frame is connected to one end of the air blowing pipe extending to the outside of the mounting frame, and the other side of the gas guide frame is in communication with the interiors of the upper and lower air blowing plates.

[0015] Preferably, the working method of the automatic dosing device for coal slime secondary flotation is as follows:

[0016] When adding the medicine into the inside of the flotation device, first, the driving end of the servo cylinder drives the quantitative piston to slide downwards in the inside of the medicine tank, the space between the bottom of the quantitative piston and the inner wall of the medicine tank is adjusted, the quantitative piston is controlled according to the required medicine adding amount of the coal slime secondary flotation, then the medicine is introduced into the inside of the medicine tank, the concentration and the adding amount of the medicine are selected according to the coal quality of the coal slime and the concentration of the slurry, after the medicine is introduced into the inside of the medicine tank, the air is filled into the inside of the mixing frame by the air pump, the air is blown out into the inside of the medicine tank through the air outlet holes in the inside of the rotating frame, the air flows in the inside of the mixing frame, drives the turbine to rotate in the inside of the mixing frame, the synchronous rotation between the rotating frame and the turbine is realized through the connecting rod between the turbine and the rotating frame, the medicine in the inside of the medicine tank is mixed by the rotation of the rotating frame at the bottom of the mixing frame, and the medicine is dispersed in the inside of the medicine tank, and the inside of the medicine tank is pressurized;

[0017] When adding the medicine into the inside of the flotation device, the type of the medicine is selected according to the coal quality, the slurry concentration and the flotation process, the medicine introduced into the inside of the medicine tank is controlled by the four metering pumps, and the amount of the medicine introduced into the inside of the medicine tank is quantitatively controlled according to the position of the quantitative piston in the inside of the medicine tank, in addition, after the concentration of the slurry is detected, the volume concentration of the medicine is adjusted according to the concentration of the slurry, and the medicine with different concentrations is introduced into the inside of the medicine tank through the four different metering pumps;

[0018] After the medicine in the inside of the medicine tank is mixed, the medicine is sent into the inside of the feeding frame through the discharge pipe and the medicine pipe, and the medicine is sprayed into the inside of the slurry through the two atomizing nozzles at the bottom of the feeding frame.

[0019] When the slurry is subjected to the medicine adding flotation treatment, first, the slurry is sent into the inside of the mounting frame from the inside of the guide inlet, the medium in the slurry is blown by the air blowing holes in the upper and lower air blowing plates when the slurry passes through the inside of the guide inlet, the medium in the slurry is fully dispersed, then the dispersed slurry enters the inside of the material passing frame, the slurry is turned over in the inside of the material passing frame by the turning frame, the inside of the slurry is blown by the two air blowing holes at the top of the air blowing pipe when the slurry is driven to the top of the material passing frame, the medicine is atomized and sprayed into the inside of the slurry by the two atomizing nozzles, and finally the slurry is sent into the flotation tank from the inside of the material passing frame, and the coal in the slurry is subjected to the flotation processing.

[0020] The application provides an automatic medicine adding device based on coal slime secondary flotation.

[0021] By setting the quantitative piston in the inside of the dosing tank, the control of the quantitative piston is carried out according to the required dosing amount of the coal slime secondary flotation, the space between the bottom of the quantitative piston and the bottom of the inside wall of the dosing tank is adjusted, so that the adding amount of the reagent is accurately controlled, meanwhile, the air pump and the mixing frame are arranged in the inside of the dosing tank, the reagent in the inside of the dosing tank is dispersed and pressurized by the cooperation of the air pump and the mixing frame, so that the reagent in the inside of the dosing tank can be punched into the inside of the slurry at high pressure, and the automatic dosing of the reagent into the inside of the flotation equipment is realized; when the inside of the slurry is dosed, the inside of the slurry is aerated by the two aeration ports at the top of the air pipe, and the reagent is sprayed into the inside of the slurry after being atomized by the two atomizing nozzles, so that the effect of the reagent on the slurry is improved, the reagent can more efficiently act on the surface of the slurry, and the flotation effect of the coal quality slurry is improved.

[0022] The type of the reagent is selected according to the coal quality, the slurry concentration and the flotation process, the reagent sent into the inside of the dosing tank is controlled by the four metering pumps, the amount of the reagent entering the inside of the dosing tank is quantitatively controlled according to the position of the quantitative piston in the inside of the dosing tank, so that the excessive reagent is avoided to be added into the slurry to affect the recovery rate of the coal material, in addition, after the concentration of the slurry is detected, the volume concentration of the reagent is adjusted according to the concentration of the slurry, the reagent with different concentrations is sent into the inside of the dosing tank by the four different metering pumps, so that the recovery rate of the coal material and the flotation effect are improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the structure of the automatic dosing device based on the coal slime secondary flotation of the embodiment of the present application;

[0024] Figure 2 It is a schematic view of the structure of the fixed frame and the dosing tank of the embodiment of the present application;

[0025] Figure 3 It is a schematic view of the structure of the mixing frame, the air pump and the dosing tank of the embodiment of the present application;

[0026] Figure 4 It is a schematic view of the structure of the mixing frame and the rotating frame of the embodiment of the present application;

[0027] Figure 5 It is a schematic view of the structure of the mixing frame and the turbine of the embodiment of the present application;

[0028] Figure 6 It is a schematic view of the structure of the mounting frame of the embodiment of the present application;

[0029] Figure 7 It is a schematic view of the structure of the material passing frame and the material turning frame of the embodiment of the present application;

[0030] Figure 8 It is a schematic view of the structure of the material passing frame and the material feeding frame of the embodiment of the present application;

[0031] Figure 9 Figure is a schematic view of the embodiment of the application and the structure of the air blowing pipe and the material turning frame.

[0032] In the figure, 10, fixed frame; 20, mounting frame; 30, dosing pipe; 40, metering pump; 50, feeding pipe; 60, feeding pipe; 70, discharge pipe; 11, dosing tank; 12, dosing piston; 13, servo cylinder; 14, air pump; 15, mixing frame; 16, rotating frame; 17, mixing tank; 18, turbine; 19, connecting rod; 110, air outlet; 21, feeding frame; 22, atomizing nozzle; 31, material passing frame; 32, material turning frame; 33, material passing opening; 34, mounting groove; 35, air blowing pipe; 36, air blowing opening; 37, servo motor; 38, material guiding opening; 39, air blowing plate; 310, air blowing opening; 311, air guiding frame. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0034] Embodiment 1

[0035] Please refer to Figures 1 to 9 As shown in the figure, the automatic dosing device based on secondary flotation of slime includes a fixed frame 10 and a mounting frame 20. The bottom of the fixed frame 10 is provided with a dosing pipe 30, and the bottom end of the dosing pipe 30 is connected with the top of the mounting frame 20.

[0036] The inside of the fixed frame 10 is provided with a dosing tank 11, and the inside of the dosing tank 11 is provided with a quantitative piston 12. The top of the inner wall of the dosing tank 11 is provided with a servo cylinder 13, and the driving end of the servo cylinder 13 is connected with the top of the quantitative piston 12. Four servo cylinders 13 are arranged on the top of the inner wall of the dosing tank 11, and the four servo cylinders 13 are arranged at equal angles about the central axis of the dosing tank 11. The top of the quantitative piston 12 is provided with an air pump 14, and the bottom of the quantitative piston 12 is provided with a mixing frame 15. The output end of the air pump 14 is communicated with the inside of the mixing frame 15 through a gas guide pipe. The bottom of the mixing frame 15 is provided with a plurality of rotating frames 16, and the inside of the plurality of rotating frames 16 is provided with a mixing tank 17. The plurality of rotating frames 16 are arranged at equal angles about the central axis of the mixing frame 15, and the plurality of rotating frames 16 are rotatably arranged at the bottom of the mixing frame 15. The inside of the mixing frame 15 is provided with a plurality of turbines 18 matched with the rotating frames 16. One side of the turbine 18 is provided with a connecting rod 19, one side of the connecting rod 19 is connected with one side of the rotating frame 16, and the other side of the rotating frame 16 is rotatably connected with one side of the mixing frame 15. The mixing frame 15 is composed of a plurality of connecting pipes, and one end of each of the adjacent two connecting pipes is rotatably connected with the two sides of the rotating frame 16.

[0037] Further, the inner wall of the mixing tank 17 is provided with a plurality of air outlets 110, and the inside of each of the plurality of air outlets 110 is communicated with the inside of the mixing frame 15.

[0038] It should be noted that when dosing the inside of the flotation equipment, first, the driving end of the servo cylinder 13 drives the quantitative piston 12 to slide downward in the inside of the dosing tank 11, adjusts the space between the bottom of the quantitative piston 12 and the bottom of the inner wall of the dosing tank 11, controls the quantitative piston 12 according to the required dosing amount for the secondary flotation of coal slime, then introduces the reagent into the inside of the dosing tank 11, the concentration and the amount of the reagent are selected according to the coal quality of the coal slime and the concentration of the slurry, after the reagent is introduced into the inside of the dosing tank 11, the air pump 14 is used to fill air into the inside of the mixing frame 15, the air is blown out into the inside of the dosing tank 11 through the air outlets 110 in the rotating frames 16, and the air flows in the inside of the mixing frame 15, drives the turbine 18 to rotate in the inside of the mixing frame 15, through the connecting rod 19 between the turbine 18 and the rotating frame 16, the synchronous rotation between the rotating frame 16 and the turbine 18 is realized, the rotating frame 16 is rotated at the bottom of the mixing frame 15, the reagent in the inside of the dosing tank 11 is mixed, the reagent is fully dispersed in the inside of the dosing tank 11, and the inside of the dosing tank 11 is pressurized, so that the reagent can be added to the coal slurry with sufficient pressure when dosing the inside of the flotation equipment, thereby effectively improving the effect of the reagent on the coal slime.

[0039] Further, the top of the fixed frame 10 is provided with four metering pumps 40, the feed end of each of the four metering pumps 40 is provided with a medicine feeding pipe 50, and the discharge end of each of the four metering pumps 40 is provided with a medicine feeding pipe 60, the bottom end of each of the four medicine feeding pipes 60 extends to the inside of the fixed frame 10, and the bottom end of each of the four medicine feeding pipes 60 is connected to the lower part inside the medicine tank 11.

[0040] It should be noted that when adding medicine to the inside of the flotation device, the type of medicine is selected according to the coal quality, slurry concentration and flotation process, the four metering pumps 40 are used to control the medicine fed into the inside of the medicine tank 11, and the amount of medicine fed into the inside of the medicine tank 11 is quantitatively controlled according to the position of the quantitative piston 12 inside the medicine tank 11, so as to avoid excessive medicine from being added to the slurry to affect the recovery rate of the coal, and in addition, after detecting the concentration of the slurry, the volume concentration of the medicine is adjusted according to the concentration of the slurry, different concentrations of medicine are fed into the inside of the medicine tank 11 through the four different metering pumps 40, so as to improve the recovery rate of the coal and the flotation effect.

[0041] Further, the bottom of the medicine tank 11 is provided with a discharge pipe 70, the bottom end of the discharge pipe 70 extends to the bottom of the fixed frame 10, the bottom end of the discharge pipe 70 is connected to the top of the medicine feeding pipe 30, the bottom end of the medicine feeding pipe 30 is provided with a feeding frame 21, and the bottom of the feeding frame 21 is provided with two atomizing nozzles 22, wherein the inside of the discharge pipe 70 is provided with an automatic control valve, after the medicine inside the medicine tank 11 is mixed, the medicine is fed into the inside of the feeding frame 21 through the discharge pipe 70 and the medicine feeding pipe 30, and the medicine is sprayed out through the two atomizing nozzles 22 at the bottom of the feeding frame 21, so that the medicine is sprayed into the inside of the slurry, and the medicine is injected into the inside of the slurry after being atomized under the high pressure in the medicine tank 11, so as to improve the contact effect of the medicine and the coal, thereby making the medicine have a higher flotation effect on the slurry.

[0042] Further, the inside of the mounting frame 20 is provided with a passing frame 31, the inside of the passing frame 31 is rotatably provided with a turning frame 32, the two sides of the passing frame 31 are provided with passing openings 33, the bottom of the feeding frame 21 is connected to the top of the passing frame 31, and the bottom of each of the two atomizing nozzles 22 extends to the inside of the passing frame 31, the inside of the turning frame 32 is provided with a mounting groove 34, and the inside of the mounting groove 34 is provided with an air pipe 35, one end of the air pipe 35 extends through the passing frame 31 and the mounting frame 20 and extends to the outside of the mounting frame 20, and the two sides of the top of the air pipe 35 are provided with air ports 36, wherein the two air ports 36 are respectively located below the two atomizing nozzles 22, and one end of the air pipe 35 is rotatably connected to the inside of the turning frame 32; one side of the mounting frame 20 is provided with a servo motor 37, and the output end of the servo motor 37 is connected to one side of the turning frame 32.

[0043] Further, the two sides of the mounting frame 20 are provided with material guide openings 38, and the upper and lower walls of the two material guide openings 38 are provided with air blowing plates 39, and the interiors of the two air blowing plates 39 are provided with air blowing openings 310, and one side of the air guide frame 311 is connected with the end of the air blowing pipe 35 extending to the outside of the mounting frame 20, and the other side of the air guide frame 311 is in communication with the interiors of the upper and lower air blowing plates 39.

[0044] It should be noted that when the slurry is subjected to the dosing flotation treatment, the slurry is first sent from the interior of the material guide opening 38 into the interior of the mounting frame 20, and when the slurry passes through the interior of the material guide opening 38, the air blowing openings 310 in the upper and lower air blowing plates 39 blow air to the medium in the slurry, so that the medium in the slurry is fully dispersed, and then the dispersed slurry enters the interior of the material passing frame 31, and the material passing frame 31 is driven by the material turning frame 32 to turn the slurry in the interior of the material passing frame 31, and after the slurry is driven to the upper side of the material passing frame 31, the two air blowing openings 36 at the top of the air blowing pipe 35 blow air to the interior of the slurry, and at the same time, the two atomizing nozzles 22 spray the medicament into the interior of the slurry after atomizing the medicament, and finally the slurry is sent from the interior of the material passing frame 31 into the flotation tank, thereby improving the effect of the medicament on the slurry, making the medicament more efficiently act on the surface of the slurry, and thereby improving the flotation effect of the coal quality slurry.

[0045] Example 2

[0046] The application also discloses an automatic dosing device working method based on coal slime secondary flotation.

[0047] When dosing in the interior of the flotation equipment, first, the driving end of the servo cylinder 13 drives the quantitative piston 12 to slide downward in the interior of the dosing tank 11, adjusts the space between the bottom of the quantitative piston 12 and the inner wall bottom of the dosing tank 11, controls the quantitative piston 12 according to the required dosing amount of the coal slime secondary flotation, then introduces the medicament into the interior of the dosing tank 11, and the concentration and the added amount of the medicament are selected according to the coal quality of the coal slime and the concentration of the slurry, after the medicament is introduced into the interior of the dosing tank 11, the air pump 14 is used to fill air into the interior of the mixing frame 15, and the air is blown out to the interior of the dosing tank 11 through the air outlet holes 110 in the interior of the rotating frame 16 after entering the interior of the mixing frame 15, and in the process of flowing in the interior of the mixing frame 15, the air drives the turbine 18 to rotate in the interior of the mixing frame 15, the synchronous rotation between the rotating frame 16 and the turbine 18 is realized through the connecting rod 19 between the turbine 18 and the rotating frame 16, the rotating frame 16 is rotated at the bottom of the mixing frame 15, the medicament in the interior of the dosing tank 11 is mixed, and the interior of the dosing tank 11 is pressurized.

[0048] When the inside of the flotation device is dosed, the type of reagent is selected according to the coal quality, the slurry concentration and the flotation process, the reagent is controlled to be sent into the inside of the dosing tank 11 by four metering pumps 40, and the amount of the reagent into the inside of the dosing tank 11 is quantitatively controlled according to the position of the quantitative piston 12 inside the dosing tank 11, in addition, after the concentration of the slurry is detected, the volume concentration of the reagent is adjusted according to the concentration of the slurry, and the reagent with different concentrations is sent into the inside of the dosing tank 11 by four different metering pumps 40;

[0049] After the reagent inside the dosing tank 11 is mixed, the reagent is sent into the inside of the feeding frame 21 through the discharge pipe 70 and the dosing pipe 30, and the reagent is sprayed into the inside of the slurry through the two atomizing nozzles 22 at the bottom of the feeding frame 21;

[0050] When the slurry is dosed and floated, the slurry is first sent into the inside of the mounting frame 20 from the inside of the guide port 38, when the slurry passes through the inside of the guide port 38, the medium in the slurry is blown by the blowing ports 310 in the upper and lower two blowing plates 39, so that the medium in the slurry is fully dispersed, then the dispersed slurry enters the inside of the material passing frame 31, the slurry is driven to turn in the inside of the material passing frame 31 by the turning frame 32, after the slurry is driven to the top of the material passing frame 31, the two air blowing ports 36 at the top of the air blowing pipe 35 blow air into the inside of the slurry, and the reagent is atomized and sprayed into the inside of the slurry by the two atomizing nozzles 22, finally the slurry is sent into the flotation tank from the inside of the material passing frame 31, and the coal in the slurry is floated and processed.

[0051] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0052] It should be noted that, in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0053] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic dosing device based on slime secondary flotation, comprising a fixing frame (10) and a mounting frame (20), a dosing pipe (30) is arranged at the bottom of the fixing frame (10), and the bottom end of the dosing pipe (30) is connected with the top of the mounting frame (20), characterized in that: The inside of the fixed frame (10) is provided with a dosing tank (11), and the inside of the dosing tank (11) is provided with a quantitative piston (12), the top of the inner wall of the dosing tank (11) is provided with a servo cylinder (13), and the driving end of the servo cylinder (13) is connected with the top of the quantitative piston (12), the top of the quantitative piston (12) is provided with an air pump (14), and the bottom of the quantitative piston (12) is provided with a mixing frame (15), the output end of the air pump (14) is communicated with the inside of the mixing frame (15) through a gas guide pipe, the bottom of the mixing frame (15) is provided with a plurality of rotating frames (16), and the inside of the plurality of rotating frames (16) is provided with a mixing trough (17), the inside of the mixing frame (15) is provided with a plurality of turbines (18) matched with the rotating frames (16), and one side of the turbine (18) is provided with a connecting rod (19), one side of the connecting rod (19) is connected with one side of the rotating frame (16), and the other side of the rotating frame (16) is rotatably connected with one side of the mixing frame (15). The inner wall of the mixing trough (17) is provided with a plurality of air outlets (110), and the inside of the plurality of air outlets (110) is communicated with the inside of the mixing frame (15).

2. The automatic reagent feeding device based on slime secondary flotation according to claim 1, characterized in that: The top of the inner wall of the dosing tank (11) is provided with four servo cylinders (13), and the four servo cylinders (13) are arranged at equal angles about the central axis of the dosing tank (11).

3. The automatic reagent feeding device based on slime secondary flotation according to claim 1, characterized in that: A plurality of rotating frames (16) are arranged at equal angles about the central axis of the mixing frame (15), and the plurality of rotating frames (16) are rotatably arranged at the bottom of the mixing frame (15).

4. The automatic reagent feeding device based on slime secondary flotation according to claim 1, characterized in that: The mixing frame (15) is composed of a plurality of connecting pipes, and one end of each of two adjacent connecting pipes is rotatably connected with two sides of the rotating frame (16).

5. The automatic reagent feeding device based on slime secondary flotation according to claim 1, characterized in that: The top of the fixed frame (10) is provided with four metering pumps (40), the feed end of each of the four metering pumps (40) is provided with a dosing pipe (50), the discharge end of each of the four metering pumps (40) is provided with a dosing pipe (60), the bottom end of each of the four dosing pipes (60) extends into the inside of the fixed frame (10), and the bottom end of each of the four dosing pipes (60) is connected with the lower part inside the dosing tank (11).

6. The automatic reagent feeding device based on coal slime secondary flotation according to claim 1, characterized in that: The bottom of the dosing tank (11) is provided with a discharge pipe (70), and the bottom end of the discharge pipe (70) extends to the bottom of the fixed frame (10), the bottom end of the discharge pipe (70) is connected with the top of the dosing pipe (30), the bottom end of the dosing pipe (30) is provided with a feeding frame (21), and the bottom of the feeding frame (21) is provided with two atomizing nozzles (22).

7. The automatic reagent feeding device based on slime secondary flotation according to claim 6, characterized in that: The inside of the mounting frame (20) is provided with a material passing frame (31), and the inside of the material passing frame (31) is rotatably provided with a material turning frame (32), one side of the mounting frame (20) is provided with a servo motor (37), and the output end of the servo motor (37) is connected with one side of the material turning frame (32), both sides of the material passing frame (31) are provided with material passing openings (33), the bottom of the material feeding frame (21) is connected with the top of the material passing frame (31), and the bottoms of the two atomizing nozzles (22) extend into the inside of the material passing frame (31).

8. The automatic reagent feeding device based on slime secondary flotation according to claim 7, characterized in that: The inside of the material turning frame (32) is provided with a mounting groove (34), and the inside of the mounting groove (34) is provided with an air blowing pipe (35), one end of the air blowing pipe (35) penetrates through the material passing frame (31) and the mounting frame (20) and extends to the outside of the mounting frame (20), and both sides of the top of the air blowing pipe (35) are provided with air blowing openings (36).

9. The automatic reagent feeding device based on coal slime secondary flotation according to claim 1, characterized in that: Both sides of the mounting frame (20) are provided with material guiding openings (38), air blowing plates (39) are arranged on the inner walls of the two material guiding openings (38) in an up-down manner, air blowing openings (310) are arranged in the insides of the two air blowing plates (39), one side of the mounting frame (20) is provided with a gas guiding frame (311), one side of the gas guiding frame (311) is connected with one end of the air blowing pipe (35) extending to the outside of the mounting frame (20), and the other side of the gas guiding frame (311) is in communication with the insides of the upper and lower air blowing plates (39).

10. The automatic reagent feeding device based on coal slime secondary flotation according to claim 1, characterized in that: The specific steps of the working method of the automatic dosing device for coal slime secondary flotation are as follows: When dosing in the inside of the flotation equipment, first, the driving end of the servo cylinder (13) drives the quantitative piston (12) to slide downward in the inside of the dosing tank (11), the space between the bottom of the quantitative piston (12) and the inner wall bottom of the dosing tank (11) is adjusted, the quantitative piston (12) is controlled according to the required dosing amount of the coal slime secondary flotation, then the reagent is introduced into the inside of the dosing tank (11), the concentration and the added amount of the reagent are selected according to the coal quality of the coal slime and the concentration of the slurry, after the reagent is introduced into the inside of the dosing tank (11), the air pump (14) is used to fill air into the inside of the mixing frame (15), the air is blown out into the inside of the dosing tank (11) through the air outlet holes (110) in the inside of the rotating frame (16) after entering the inside of the mixing frame (15), the air flows in the inside of the mixing frame (15), drives the turbine (18) to rotate in the inside of the mixing frame (15), the connecting rod (19) between the turbine (18) and the rotating frame (16) is used to make the rotating frame (16) and the turbine (18) rotate synchronously, the rotating frame (16) rotates at the bottom of the mixing frame (15), the reagent in the inside of the dosing tank (11) is mixed, the reagent is dispersed in the inside of the dosing tank (11), and the inside of the dosing tank (11) is pressurized; When adding the reagent to the inside of the flotation device, according to the coal quality, the slurry concentration and the flotation process, the type of the reagent is selected, the four metering pumps (40) are used to control the reagent into the inside of the reagent tank (11), and the quantitative control of the reagent into the inside of the reagent tank (11) is realized according to the position of the quantitative piston (12) in the inside of the reagent tank (11), in addition, after detecting the concentration of the slurry, the volume concentration of the reagent is adjusted according to the concentration of the slurry, and the reagent with different concentrations is introduced into the inside of the reagent tank (11) through the four different metering pumps (40); After the reagent in the inside of the reagent tank (11) is mixed, the reagent is sent into the inside of the feeding frame (21) through the discharge pipe (70) and the feeding pipe (30), and the reagent is sprayed into the inside of the slurry through the two atomizing nozzles (22) at the bottom of the feeding frame (21); When the slurry is added and floated, the slurry is first sent into the inside of the mounting frame (20) from the inside of the guide port (38), when the slurry passes through the inside of the guide port (38), the blowing port (310) in the upper and lower two blowing plates (39) is used to blow the medium in the slurry, so that the medium in the slurry is fully dispersed, then the dispersed slurry enters the inside of the material passing frame (31), the material passing frame (31) is used to drive the slurry to tumble in the inside of the material passing frame (31), after the slurry is driven to the top of the material passing frame (31), the two air blowing ports (36) at the top of the air blowing pipe (35) blow the inside of the slurry, at the same time, the two atomizing nozzles (22) spray the reagent into the inside of the slurry, finally, the slurry is sent into the flotation tank from the inside of the material passing frame (31), and the coal in the slurry is floated and processed.

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