Mining flotation machine with stable inflation system

Abstract

The invention belongs to the technical field of mining flotation machines, and particularly relates to a mining flotation machine with a stable inflation system, which comprises a flotation main tank body, an air inlet mechanism is mounted at the upper end of the flotation main tank body, an air guide cylinder is fixedly mounted in the flotation main tank body, and a mixing mechanism is connected to the lower end of the air guide cylinder. A driving shaft is rotationally installed in the air guide cylinder, the lower end of the driving shaft is matched with a mixing mechanism to be connected with a flotation impeller, and a flotation separator is installed at the bottom of the inner side of the flotation main tank body through a support; according to the scheme, the problems that during use, air is not stable enough when entering, the air makes insufficient contact with ore liquid, the ore liquid cannot be rapidly and timely mixed with the air, and therefore the combined flotation efficiency of the air and the ore liquid is affected are solved; through the designed air inlet mechanism and mixing mechanism, during use, ore liquid is circulated through a circulating barrel, air enters through an air inlet, and the air and the ore liquid are mixed through cooperation of a discharging pipe and a liquid inlet nozzle.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine flotation machines, and particularly relates to a mine flotation machine with a stable air inflation system. Background Art

[0002] Mine flotation machines are core equipment in the field of mineral processing. By introducing air bubbles into the pulp, they utilize the hydrophobicity of target mineral particles to make them attach to the bubbles and float, achieving efficient separation of useful minerals from gangue. The stability of the air inflation system and the air-liquid mixing efficiency directly affect the bubble mineralization effect and the flotation recovery rate.

[0003] Currently, the mainstream flotation machines mainly adopt two air inflation methods: Negative pressure self-priming type: It relies on the negative pressure generated by the high-speed rotation of the impeller to suck in air. However, in actual working conditions, fluctuations in the pulp liquid level or wear of the impeller will lead to unstable air intake, uneven bubble size distribution, and insufficient proportion of fine bubbles, affecting the capture of fine-grained minerals.

[0004] Blower forced air supply type: Although it can provide a constant gas volume, when the gas enters the pulp through a static distributor, there are the following defects: The gas directly floats in the form of large bubbles, the pulp residence time is short, and the air-liquid contact area is limited; the pulp turbulence intensity is insufficient, and the bubbles are difficult to be effectively dispersed, resulting in a low combination rate of mineralized bubbles; the erosion and wear of high-hardness ore particles on the impeller will further deteriorate the mixing uniformity, and it is necessary to frequently stop the machine to replace components. Therefore, it is necessary to design a mine flotation machine with a stable air inflation system to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a mine flotation machine with a stable air inflation system to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A mine flotation machine with a stable air inflation system, including a main flotation tank body. An air intake mechanism is installed at the upper end of the main flotation tank body. A gas guide cylinder is fixedly installed inside the main flotation tank body. The lower end of the gas guide cylinder is connected to a mixing mechanism. A driving shaft is rotatably installed inside the gas guide cylinder. The lower end of the driving shaft is connected to a flotation impeller in cooperation with the mixing mechanism. A flotation stator is installed at the inner bottom of the main flotation tank body through a bracket; The mixing mechanism includes a circulation cylinder installed on the outer side of the lower end of the air guide cylinder and a circulation liquid inlet pipe installed on the inner side of the lower end of the air guide cylinder. One end of the circulation liquid inlet pipe passes through the air guide cylinder and communicates with the inside of the circulation cylinder. The lower end of the circulation liquid inlet pipe is fixedly installed with a support frame, and the lower end of the support frame is connected with a liquid inlet nozzle. The liquid inlet nozzle communicates with the inside of the circulation cylinder through the circulation liquid inlet pipe. An air inlet cover is welded on the outer side of the liquid inlet nozzle. The surface of the air inlet cover is provided with an air inlet, and the air inlet communicates with the inside of the air guide cylinder. A discharge pipe is welded on the lower side of the air inlet cover. At both ends inside the discharge pipe, a throat pipe and a diffuser pipe are respectively arranged; The air inlet mechanism includes an air inlet blower installed on the upper end of the flotation main tank body and an air inlet pipe installed on the air inlet blower. One end of the air inlet pipe communicates with the upper end of the air guide cylinder. The lower end of the drive shaft is successively provided with an air inlet shaft, an alloy steel drive shaft, and a mixing screw rod. The lower end of the mixing screw rod is fixedly installed with a flotation impeller. The mixing screw rod is located inside the diffuser pipe, and one end of the alloy steel drive shaft passes through the discharge pipe, the liquid inlet nozzle, and the support frame.

[0007] Preferably, a flow port is arranged between the support frame and the air guide cylinder and on the surface of the support frame, and the circulation liquid inlet pipe is welded on the support frame.

[0008] Preferably, a mineral liquid inlet pipe is installed on one side of the flotation main tank body. One end of the mineral liquid inlet pipe passes through the flotation main tank body and communicates with the inside of the mixing mechanism.

[0009] Preferably, a bubble scraping shaft is rotatably installed on one side of the upper end of the flotation main tank body through a bearing seat. A bubble scraping frame is fixedly installed on the outer side of the bubble scraping shaft. A bubble scraping motor is fixedly installed on the upper side of the flotation main tank body through bolts. The bubble scraping motor is connected with one end of the bubble scraping shaft through a belt and a pulley for transmission.

[0010] Preferably, a drive motor is fixedly installed on the upper end of the flotation main tank body through bolts. The upper end of the drive shaft is connected with the output shaft of the drive motor through a belt and a pulley for transmission.

[0011] Preferably, the flotation impeller includes an installation sleeve installed at the lower end of the mixing mechanism. The lower side of the installation sleeve is provided with an impeller main board. Installation tabs are installed on the upper side of the impeller main board. A cemented carbide bushing is fixedly installed on the outer side of the installation tabs through bolts. A mixing lower blade is fixedly installed on the lower side of the impeller main board. Shearing sawtooth protrusions are arranged on the inner wall of the mixing lower blade. A suction port is arranged in the middle of the mixing lower blade.

[0012] Preferably, a limit clamping seat is installed on the inner side of the impeller main board by snap-fitting. The limit clamping seat is fixedly installed at the lower end of the drive shaft. A fixed pressing plate is installed on the lower side of the mixing lower blade, and the fixed pressing plate is fixed at the lower end of the drive shaft.

[0013] Preferably, the shapes of the mounting tabs and the cemented carbide bushings are both spiral, and the cemented carbide bushings are sleeved on the mounting tabs and fixed by bolts.

[0014] Preferably, the intake shaft, the alloy steel transmission shaft, and the mixing screw rod are located in the middle of the drive shaft, and both ends of the drive shaft are connected to the flotation impeller and the air guide cylinder.

[0015] Preferably, the shapes of the liquid inlet nozzle and the discharge pipe are both flared, and the lower end of the liquid inlet nozzle is inserted into the interior of the air intake hood.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the designed air intake mechanism and mixing mechanism, during use, the ore liquid is circulated through the circulation cylinder, air enters through the air inlet, and the air and ore liquid are mixed in cooperation with the discharge pipe and the liquid inlet nozzle. Then, the air and ore liquid passing through are quickly sucked through the throat pipe and the diffuser pipe to generate strong turbulent flow, and the air and ore liquid are effectively mixed in cooperation with the mixing screw rod. The combination effect is better during mixing, making the flotation efficiency higher.

[0017] 2. Through the designed flotation impeller, during use, by adopting the cemented carbide bushing with a spiral linear curved surface, the pulp is quickly axially flowed when rotating, thereby enhancing the mixing flotation effect. And through the shear sawtooth protrusions installed on the mixing lower blades, the shearing force on the ore liquid and air is enhanced, so that the bubbles are broken into small bubbles and fully mixed with the ore liquid for flotation.

[0018] 3. Through the designed air intake mechanism and flotation impeller, during use, the air guide cylinder is ventilated by operating the air intake blower, so as to quickly supplement air to the mixing mechanism and quickly intake and mix air for flotation in cooperation with the negative pressure generated by the throat pipe in the discharge pipe. If the engagement between the cemented carbide bushing and the mounting tab is damaged after long-term use, the cemented carbide bushing can be removed and replaced, without the need to replace all parts, reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic flotation structural diagram of the present invention; Figure 3 is a schematic structural diagram of the mixing mechanism of the present invention; Figure 4 is a schematic structural diagram of the discharge pipe of the present invention; Figure 5 is a schematic structural diagram of the circulating liquid inlet pipe of the present invention; Figure 6 is a schematic cross-sectional structural diagram of the flotation impeller of the present invention; Figure 7It is a schematic diagram of the top view of the flotation impeller of the present invention; Figure 8 It is a schematic diagram of the structure of the cemented carbide bushing of the present invention; In the figure: 1. flotation main tank; 11. ore liquid inlet pipe; 12. scraper motor; 13. scraper shaft; 14. scraper frame; 15. drive motor; 16. drive shaft; 17. air guide cylinder; 18. flotation selector; 2. air intake mechanism; 21. air intake blower; 22. air intake pipe; 23. air intake shaft; 24. alloy steel transmission shaft; 25. mixing screw rod; 3. mixing mechanism; 31. circulation cylinder; 32. Circulating liquid inlet pipe; 33, support frame; 34, air inlet hood; 35, liquid inlet nozzle; 36, discharge pipe; 37, throat; 38, diffuser; 39, air inlet; 4, flotation impeller; 41, mounting sleeve; 42, impeller main board; 43, mounting convex piece; 44, carbide bushing; 45, mixing lower blade; 46, shearing serration protrusion; 47, suction port; 48, limit card seat; 49, fixed pressure plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 8 The present invention provides a technical solution: a mining flotation machine with a stable inflation system, comprising a flotation main tank body 1, an air intake mechanism 2 is installed at the upper end of the flotation main tank body 1, an air guide cylinder 17 is fixedly installed inside the flotation main tank body 1, a mixing mechanism 3 is connected to the lower end of the air guide cylinder 17, a driving shaft 16 is rotatably installed inside the air guide cylinder 17, a driving motor 15 is fixedly installed at the upper end of the flotation main tank body 1 by bolts, the upper end of the driving shaft 16 is transmission-connected to the output shaft of the driving motor 15 by a belt and a pulley, the lower end of the driving shaft 16 is connected to the flotation impeller 4 in cooperation with the mixing mechanism 3, and a flotation selector 18 is installed at the inner bottom of the flotation main tank body 1 through a bracket; The mixing mechanism 3 includes a circulation cylinder 31 installed on the outer side of the lower end of the air guide cylinder 17 and a circulation liquid inlet pipe 32 installed on the inner side of the lower end of the air guide cylinder 17. One end of the circulation liquid inlet pipe 32 passes through the air guide cylinder 17 and is communicated with the inside of the circulation cylinder 31. A support frame 33 is fixedly installed at the lower end of the circulation liquid inlet pipe 32. A liquid inlet nozzle 35 is connected to the lower end of the support frame 33. The liquid inlet nozzle 35 is communicated with the inside of the circulation cylinder 31 through the circulation liquid inlet pipe 32. An air inlet hood 34 is welded to the outer side of the liquid inlet nozzle 35. An air inlet 39 is provided on the surface of the air inlet hood 34, and the air inlet 39 is communicated with the inside of the air guide cylinder 17. Air enters the air inlet hood 34 from the air inlet 39, and then is mixed with the ore liquid sprayed out from the liquid inlet nozzle 35, passes through the throat pipe 37, is diffused through the diffusion pipe 38 for rapid mixing, and is sprayed out through the rotation and diversion of the mixing screw rod 25. A discharge pipe 36 is welded to the lower side of the air inlet hood 34. A throat pipe 37 and a diffusion pipe 38 are respectively arranged at both ends inside the discharge pipe 36. The ore liquid enters the liquid inlet nozzle 35 through the circulation liquid inlet pipe 32 and is sprayed out through the liquid inlet nozzle 35 and enters the discharge pipe 36; a circulation port is provided between the support frame 33 and the air guide cylinder 17 and on the surface of the support frame 33, and the circulation liquid inlet pipe 32 is welded to the support frame 33, which is convenient for air to pass through from the air guide cylinder 17 during use. The shapes of the liquid inlet nozzle 35 and the discharge pipe 36 are both set to be trumpet-shaped, and the lower end of the liquid inlet nozzle 35 is inserted into the inside of the air inlet hood 34, which is convenient for using the Venturi tube effect to make the mixing effect of the ore liquid and air better; Further, refer to Figures 1 to 8 The air inlet mechanism 2 includes an air inlet blower 21 installed on the upper end of the flotation main tank body 1 and an air inlet pipe 22 installed on the air inlet blower 21. One end of the air inlet pipe 22 is communicated with the upper end of the air guide cylinder 17. The air inlet blower 21 operates to cooperate with the air inlet pipe 22 to introduce air into the air guide cylinder 17. An air inlet shaft 23, an alloy steel transmission shaft 24, and a mixing screw rod 25 are sequentially arranged at the lower end of the drive shaft 16. A flotation impeller 4 is fixedly installed at the lower end of the mixing screw rod 25. The mixing screw rod 25 is located inside the diffusion pipe 38, and one end of the alloy steel transmission shaft 24 passes through the discharge pipe 36, the liquid inlet nozzle 35, and the support frame 33. The drive motor 15 drives the drive shaft 16 to rotate, and the drive shaft 16 drives the air inlet shaft 23, the alloy steel transmission shaft 24, and the mixing screw rod 25 to rotate; the air inlet shaft 23, the alloy steel transmission shaft 24, and the mixing screw rod 25 are located in the middle of the drive shaft 16, and both ends of the drive shaft 16 are connected to the flotation impeller 4 and the air guide cylinder 17, which is convenient for the drive shaft 16 to drive the air inlet shaft 23, the alloy steel transmission shaft 24, and the mixing screw rod 25 to rotate during use. The mixing screw rod 25 rotates to guide and further mix the mixed ore liquid and air, ensuring better flotation effect of the ore liquid mixing.

[0022] Further, refer to Figures 1 to 8A mineral liquid inlet pipe 11 is installed on one side of the flotation main tank body 1, and one end of the mineral liquid inlet pipe 11 passes through the flotation main tank body 1 and is connected to the interior of the mixing mechanism 3, so that the mineral liquid can be added conveniently during use; a bubble scraping shaft 13 is rotatably installed on one side of the upper end of the flotation main tank body 1 through a bearing seat, and a bubble scraping frame 14 is fixedly installed on the outer side of the bubble scraping shaft 13. A bubble scraping motor 12 is fixedly installed on the upper side of the flotation main tank body 1 by bolts, and the bubble scraping motor 12 is connected to one end of the bubble scraping shaft 13 through a belt and a pulley transmission. The floating bubbles are driven by the bubble scraping motor 12 to drive the bubble scraping shaft 13 and the bubble scraping frame 14 to rotate and be scraped out for collection.

[0023] From the above description, it can be seen that the present invention has the following beneficial effects: when in use, the ore liquid is circulated through the circulation cylinder 31, air enters through the air inlet 39, the air and the ore liquid are mixed in cooperation with the discharge pipe 36 and the liquid inlet nozzle 35, and then the air and the ore liquid passing through are quickly sucked in through the throat 37 and the diffuser 38 to generate a strong turbulent flow, and the air and the ore liquid are effectively mixed in cooperation with the mixing screw 25, and the combination effect during mixing is better, so that the flotation efficiency is higher.

[0024] Example 2: Please refer to Figures 1 to 8 As shown, on the basis of the first embodiment, the present invention provides a technical solution: the flotation impeller 4 includes a mounting sleeve 41 mounted on the lower end of the mixing mechanism 3, an impeller main board 42 is arranged on the lower side of the mounting sleeve 41, a mounting convex piece 43 is mounted on the upper side of the impeller main board 42, and a hard alloy bushing 44 is fixedly mounted on the outer side of the mounting convex piece 43 by bolts, and the flotation impeller 4 drives the mounting convex piece 43 and the hard alloy bushing 44 to stir when the flotation impeller 4 rotates to achieve a better mixing effect, and when the hard alloy bushing 44 is damaged, it is only necessary to disassemble the damaged hard alloy bushing 44 for replacement, and there is no need to replace the entirety to reduce the cost, a mixing lower blade 45 is fixedly mounted on the lower side of the impeller main board 42, a shearing serration protrusion 46 is arranged on the inner wall of the mixing lower blade 45, and a suction port 47 is arranged in the middle of the mixing lower blade 45 , the lower mixing blade 45 rotates to extract the ore liquid in the flotation main tank 1 from the suction port 47 for circulation, and the shearing sawtooth protrusion 46 is used to disperse the bubbles and mix the ore liquid for flotation; the inner side of the impeller main board 42 is installed with a limit card seat 48 through a card slot, and the limit card seat 48 is fixedly installed at the lower end of the drive shaft 16. A fixed pressure plate 49 is installed at the lower side of the lower mixing blade 45, and the fixed pressure plate 49 is fixed to the lower end of the drive shaft 16. When in use, the position of the limit card seat 48 can be adjusted to cooperate with the fixed pressure plate 49 to adjust the installation position of the impeller main board 42; the shapes of the mounting lug 43 and the cemented carbide bushing 44 are both set to a spiral shape, and the cemented carbide bushing 44 is sleeved on the mounting lug 43 and fixed by bolts. When in use, the mounting lug 43 and the cemented carbide bushing 44 can better stir the ore liquid.

[0025] The flotation impeller 4 adopting the above technical solution, when in use, by adopting the hard alloy bushing 44 with a spiral curved surface, promotes the rapid axial flow of the pulp during rotation, thereby enhancing the mixed flotation effect, and through the shear sawtooth protrusions 46 installed on the mixing lower blade 45, enhances the shear force on the ore liquid and air, so that the bubbles are broken into small bubbles and fully mixed with the ore liquid for flotation.

[0026] The air intake mechanism 2 and the flotation impeller 4 adopting the above technical solution, when in use, ventilate the air guide cylinder 17 through the operation of the air intake blower 21, so as to quickly supplement air to the mixing mechanism 3 and cooperate with the negative pressure generated by the inner throat 37 of the discharge pipe 36 for rapid air intake and mixing flotation. If the hard alloy bushing 44 is damaged due to the engagement of the hard alloy bushing 44 and the installation tab 43 after long-term use, the hard alloy bushing 44 can be removed and replaced, without the need to replace all parts, reducing the maintenance cost.

[0027] The working principle and usage process of the present invention: When in use, pulp is added into the circulation cylinder 31 through the ore liquid inlet pipe 11, air is introduced into the air guide cylinder 17 through the operation of the air intake blower 21 in cooperation with the air inlet pipe 22. At the same time, the drive motor 15 drives the drive shaft 16 to rotate, and the drive shaft 16 drives the air intake shaft 23, the alloy steel transmission shaft 24 and the mixing screw rod 25 to rotate. The mixing screw rod 25 cooperates with the drive shaft 16 to drive the flotation impeller 4 to rotate. The negative pressure generated by the rotation of the flotation impeller 4 extracts the ore liquid and air. The ore liquid enters the liquid inlet nozzle 35 through the circulation liquid inlet pipe 32, is sprayed out through the liquid inlet nozzle 35 and enters the discharge pipe 36. Negative pressure is generated when passing through the discharge pipe 36 to draw in air. The air enters the air intake cover 34 from the air inlet 39, then is mixed with the ore liquid sprayed out from the liquid inlet nozzle 35, passes through the throat 37, is diffused through the diffuser pipe 38 for rapid mixing and is sprayed out through the rotation and diversion of the mixing screw rod 25. When the flotation impeller 4 rotates, it drives the installation tab 43 and the hard alloy bushing 44 to stir, making the mixing effect better. And through the rotation of the mixing lower blade 45, the ore liquid in the flotation main tank body 1 is extracted from the suction port 47 for circulation, and the shear sawtooth protrusions 46 are used to stir and disperse the bubbles for mixing with the ore liquid for flotation. The floating bubbles are scraped and collected by driving the scraping shaft 13 and the scraping frame 14 to rotate by the scraping motor 12.

[0028] It should be noted that in this text, relational 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 actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0029] As described above, it is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made by those of ordinary skill in the art to the technical solution of the present invention shall be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A mine flotation machine with a stable inflation system, comprising a main flotation tank body (1), characterized in that: An air inlet mechanism (2) is installed at the upper end of the main flotation cell (1). A gas guide cylinder (17) is fixedly installed inside the main flotation cell (1). The lower end of the gas guide cylinder (17) is connected to a mixing mechanism (3). A drive shaft (16) is rotatably installed inside the gas guide cylinder (17). The lower end of the drive shaft (16) is connected to a flotation impeller (4) in cooperation with the mixing mechanism (3). A flotation stator (18) is installed at the inner bottom of the main flotation cell (1) through a bracket; The mixing mechanism (3) includes a circulation cylinder (31) installed on the outer side of the lower end of the gas guide cylinder (17) and a circulation liquid inlet pipe (32) installed on the inner side of the lower end of the gas guide cylinder (17). One end of the circulation liquid inlet pipe (32) passes through the gas guide cylinder (17) and communicates with the inside of the circulation cylinder (31). A support frame (33) is fixedly installed at the lower end of the circulation liquid inlet pipe (32). The lower end of the support frame (33) is connected to a liquid inlet nozzle (35). The liquid inlet nozzle (35) communicates with the inside of the circulation cylinder (31) through the circulation liquid inlet pipe (32). An air inlet hood (34) is welded on the outer side of the liquid inlet nozzle (35). An air inlet (39) is formed on the surface of the air inlet hood (34), and the air inlet (39) communicates with the inside of the gas guide cylinder (17). A discharge pipe (36) is welded on the lower side of the air inlet hood (34). A throat pipe (37) and a diffuser pipe (38) are respectively arranged at both ends inside the discharge pipe (36); The air inlet mechanism (2) includes an air inlet blower (21) installed at the upper end of the main flotation cell (1) and an air inlet pipe (22) installed on the air inlet blower (21). One end of the air inlet pipe (22) communicates with the upper end of the gas guide cylinder (17). The lower end of the drive shaft (16) is successively provided with an air inlet shaft (23), an alloy steel transmission shaft (24), and a mixing screw rod (25). The lower end of the mixing screw rod (25) is fixedly installed with a flotation impeller (4). The mixing screw rod (25) is located inside the diffuser pipe (38), and one end of the alloy steel transmission shaft (24) passes through the discharge pipe (36), the liquid inlet nozzle (35), and the support frame (33).

2. A mine flotation machine with a stable inflation system according to claim 1, characterized in that: A circulation port is arranged between the support frame (33) and the gas guide cylinder (17) and on the surface of the support frame (33), and the circulation liquid inlet pipe (32) is welded on the support frame (33).

3. A mine flotation machine with a stable inflation system according to claim 1, characterized in that: A mineral liquid inlet pipe (11) is installed on one side of the main flotation cell (1). One end of the mineral liquid inlet pipe (11) passes through the main flotation cell (1) and communicates with the inside of the mixing mechanism (3).

4. A mine flotation machine with a stable inflation system according to claim 1, characterized in that: A foam scraping shaft (13) is rotatably installed at one side of the upper end of the main flotation cell (1) through a bearing seat. A foam scraping frame (14) is fixedly installed on the outer side of the foam scraping shaft (13). A foam scraping motor (12) is fixedly installed on the upper side of the main flotation cell (1) through bolts. The foam scraping motor (12) is connected to one end of the foam scraping shaft (13) through a belt and a pulley for transmission connection.

5. A mine flotation machine with a stable inflation system according to claim 1, characterized in that: A drive motor (15) is fixedly mounted on the upper end of the flotation main tank (1) by means of bolts, and the upper end of the drive shaft (16) is drivingly connected to the output shaft of the drive motor (15) via a belt and a pulley.

6. The inflatable system-stabilized mine flotation machine according to claim 1, wherein: The flotation impeller (4) comprises a mounting sleeve (41) mounted at the lower end of the mixing mechanism (3); an impeller main plate (42) is arranged at the lower side of the mounting sleeve (41); a mounting lug (43) is mounted at the upper side of the impeller main plate (42); a hard alloy bushing (44) is fixedly mounted on the outer side of the mounting lug (43) by means of bolts; a mixing lower blade (45) is fixedly mounted at the lower side of the impeller main plate (42); a shearing sawtooth protrusion (46) is arranged on the inner wall of the mixing lower blade (45); and a suction port (47) is arranged at the middle of the mixing lower blade (45).

7. The mine flotation machine with a stable inflation system according to claim 6, characterized in that: A limit clamping seat (48) is mounted on the inner side of the impeller main plate (42) through a clamping slot, and the limit clamping seat (48) is fixedly mounted on the lower end of the drive shaft (16). A fixed pressure plate (49) is mounted on the lower side of the mixing lower blade (45), and the fixed pressure plate (49) is fixed to the lower end of the drive shaft (16).

8. A mine flotation machine with a stable inflation system according to claim 6, characterized in that: The shapes of the mounting lug (43) and the hard alloy bushing (44) are both set to be spiral, and the hard alloy bushing (44) is sleeved on the mounting lug (43) and fixed by bolts.

9. A mine flotation machine with a stable inflation system according to claim 1, characterized in that: The air intake shaft (23), the alloy steel transmission shaft (24) and the mixing screw rod (25) are located in the middle of the drive shaft (16), and both ends of the drive shaft (16) are connected to the flotation impeller (4) and the air guide cylinder (17).

10. A mine flotation machine with a stable inflation system according to claim 1, characterized in that: The liquid inlet nozzle (35) and the discharge pipe (36) are both configured to be trumpet-shaped, and the lower end of the liquid inlet nozzle (35) is inserted into the interior of the air inlet hood (34).

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