A flotation machine for automatic ore sorting

Abstract

The application discloses a flotation machine for automatic screening of ores, which comprises a flotation barrel for adding minerals and suspensions, a double-head hollow shaft motor provided with power at the bottom center of the flotation barrel, a hollow output shaft of the double-head hollow shaft motor is clamped and engaged in transmission with a power shaft rod, high-pressure gas is sent into the hollow output shaft of the double-head hollow shaft motor by external equipment, the top of the power shaft rod is provided with a bubble beating disc which can slide up and down, when the power shaft rod rotates, the bottom ring gap of the bubble beating disc floats up and down and engages with the inner ring boss of the flotation barrel, the gas passage in the driven shaft rod, the power shaft rod and the branch support is connected, the high-pressure gas is filled into the fluid in the flotation barrel through the driven shaft rod, when the driven shaft rod revolves around the power shaft rod, the driven shaft rod synchronously revolves, when the driven shaft rod revolves, the fluid in the flotation barrel is circulated and stirred in the vertical direction, the contact between the minerals and the suspensions is more sufficient, and the flotation efficiency of the suspensions is improved.

Description

Technical Field

[0001] This invention relates to the field of mining processing, and more particularly to a flotation machine for automatic screening of ores. Background Technology

[0002] A flotation machine is a device used for automatic screening of ores. It is mainly used in the mineral processing of ores to separate useful minerals from waste rock through physical and chemical methods, thereby achieving the purpose of extracting useful minerals. The working principle of the flotation machine is to use the interaction between the ore and the reagents to make the useful minerals float to the surface of the liquid along with the foam, while the waste rock sinks to the bottom. During the flotation process, the stirring device mixes the ore and the reagents, and the gas supply system injects gas into the flotation cell to generate foam. Then, the foam separation device separates the useful minerals from the foam.

[0003] In existing technologies, the internal stirring device of the flotation machine only operates in the horizontal direction. The fluid inside the flotation tank is only stirred horizontally without any tumbling or circulation in the vertical direction. This results in insufficient contact between the minerals and the suspension, poor fusion between the minerals and the suspension, and the foam produced by conventional flotation machines is generated by introducing gas into the suspension. The foaming speed on the surface of the suspension is slow, resulting in low flotation efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve any of the problems in the above-mentioned technologies, thereby providing a flotation machine for automatic screening of ores.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flotation machine for automatic ore screening, comprising a flotation tank for adding minerals and suspension, and a double-headed hollow shaft motor for providing power at its bottom center. The hollow output shaft of the double-headed hollow shaft motor is engaged with the power shaft for transmission. High-pressure gas is supplied to the hollow output shaft of the double-headed hollow shaft motor by an external device. A sliding frothing disc is provided at the top of the power shaft. When the power shaft rotates, the bottom ring notch of the frothing disc floats and engages with the inner ring protrusion of the flotation tank, allowing the frothing disc to inject more air into the suspension, thereby increasing the frothing volume and flotation efficiency of the equipment. The power shaft is further divided into a circumferential array via a bracket. The system is equipped with multiple driven shafts. The driven shafts, power shafts, and internal air passages of the support frame are connected. High-pressure gas is uniformly injected into the fluid inside the flotation tank through the driven shafts, increasing the air content inside the equipment and thus increasing the foaming rate and flotation efficiency. The power shaft drives the driven shaft to rotate through the meshing of the power gear and the driven gear. As the driven shaft revolves around the power shaft, it also rotates synchronously on its own axis. A positive spiral ring tube and a negative spiral ring tube are respectively installed on both sides of the driven shaft. While rotating on its own axis, the driven shaft drives the fluid inside the flotation tank to circulate and agitate in the vertical direction, improving the stirring efficiency of the fluid inside the flotation tank, allowing for more thorough contact between the minerals and the suspension, and improving the flotation efficiency of the suspension.

[0006] Furthermore, the flotation tank is cylindrical, with an inner ring opening on the inner wall of the top opening, and an inner ring boss with sloping sides distributed in a circle at the bottom of the inner ring opening. A feed guide trough is provided on the right outer wall of the top opening of the flotation tank, and a rotating shaft platform with a through hole in the center is provided at the bottom center of the inner wall of the flotation tank. A slag discharge port is provided on the bottom left side of the outer wall of the flotation tank.

[0007] Furthermore, a removable plug is fitted inside the slag discharge port of the flotation tank, and a rotatable power shaft is installed inside the rotating platform of the flotation tank.

[0008] Furthermore, the main body of the power shaft is an outer propeller shaft with helical blades on its outer wall. An air outlet bearing is located at the center of both the upper and lower surfaces of the outer propeller shaft. A bracket is fitted onto each air outlet bearing on both the upper and lower surfaces of the outer propeller shaft. The air outlet bearing is a frustum with a semi-circular groove at its center on its side. A drive shaft bearing in the shape of a smooth shaft is located on the top of the air outlet bearing on the upper surface of the outer propeller shaft. The power gear is nested in the drive shaft bearing and rotates accordingly. An external thread bearing with external threads is located on the top of the drive shaft bearing. A T-nut engages and locks with the external threads of the external thread bearing. A hexagonal boss-shaped hexagonal bearing is located on the top of the external thread bearing. The bubble-making disc floats up and down. The device is mounted on a hexagonal shaft seat, with a cross shaft seat at the top. The cross shaft seat has a truncated cone with a cross notch at its center. The cross scraper is fixed in the cross notch of the cross shaft seat and rotates with it. The bottom of the air outlet shaft seat on the lower surface of the outer propeller shaft has a smooth shaft-shaped rotating shaft seat. The bottom center of the rotating shaft seat has a connecting port. The hollow output shaft at the upper end of the double-headed hollow shaft motor is inserted into the connecting port. The double-headed hollow shaft motor is fixed to the center of the bottom surface of the flotation tank. The power shaft has an air guide groove inside. The air guide groove is connected to the semi-circular groove on the side of the air outlet shaft seat on the upper and lower surfaces of the outer propeller shaft. The air guide groove is connected to the connecting port.

[0009] Furthermore, the sub-support is in the form of a hexagonal tree branch, with a central shaft opening at the center. Each branch of the sub-support has a branch shaft opening at its top. The middle section of the side wall of the branch shaft opening and the central shaft opening is provided with a connecting air guide hole. The central shaft opening of the sub-support is nested on the air outlet bearing of the power shaft and rotates accordingly. The air guide hole is connected to the air guide groove. The driven shaft rotates through the branch shaft opening of the sub-support.

[0010] Furthermore, the driven shaft body is a central shaft in the shape of a smooth shaft. An intake bearing is provided at the center of both the upper and lower surfaces of the central shaft. The intake bearing is a frustum with a semi-circular groove at the center of its side. A smooth shaft-shaped locking bearing is provided at the top of the intake bearing on the upper surface of the central shaft. The driven gear is nested in the locking bearing and rotates accordingly. Semi-arc-shaped positive spiral tubes and negative spiral tubes are respectively provided on the left and right sides of the central shaft. Positive spiral tracks and negative spiral tracks are distributed inside the positive spiral tubes and negative spiral tubes. A connecting air passage groove is provided inside the central shaft, the positive spiral tubes, and the negative spiral tubes. The air passage groove connects to the semi-circular groove on the side of the intake bearing on the upper and lower surfaces of the central shaft. The air passage groove also connects to the air guide hole of the sub-support. Exhaust holes are provided on the surfaces of the central shaft, the positive spiral tubes, and the negative spiral tubes.

[0011] Furthermore, the driving gear meshes with multiple driven gears to form a planetary gear structure. When the driving gear rotates, the driven gears rotate around it while simultaneously rotating on their own axis.

[0012] Furthermore, the frothing plate is a disc-shaped structure with a raised platform at its center and a circular stepped edge on its bottom surface. The surface of the frothing plate is provided with dense foaming holes. The center of the frothing plate is provided with a hexagonal shaft hole with a hexagonal notch. The hexagonal shaft hole slides up and down on the hexagonal shaft seat of the power shaft. The bottom surface of the circular stepped edge of the frothing plate is provided with a bottom ring notch with a circumferentially distributed inclined side. The outer wall of the frothing plate is in contact with the inner wall of the inner ring of the flotation tank and slides up and down. At the same time, the bottom ring notch floats and overlaps with the inner ring raised platform of the flotation tank.

[0013] The beneficial effects of this invention are:

[0014] The dual-head hollow shaft motor is connected to the drive shaft for transmission. The drive shaft drives the driven shaft to rotate through the meshing of the drive gear and the driven gear. As the driven shaft revolves around the drive shaft, it rotates synchronously on its own axis. A positive spiral ring tube and a negative spiral ring tube are respectively set on both sides of the driven shaft. While the driven shaft rotates, it drives the fluid inside the flotation tank to circulate and agitate in the vertical direction through the positive and negative spiral ring tubes, which improves the stirring efficiency of the fluid inside the flotation tank, makes the minerals and suspension more fully contacted, and improves the extraction effect of the suspension on the minerals.

[0015] High-pressure gas enters the air guide groove of the power shaft from the hollow output shaft of the double-headed hollow shaft motor. The high-pressure gas in the air guide groove is guided to the air passage groove of the driven shaft through the air guide hole of the sub-support, and then introduced into the fluid inside the flotation tank through the exhaust hole. This allows high-pressure air to be pumped into the material inside the flotation tank while it is being stirred and extracted, increasing the foam content in the fluid inside the flotation tank and improving the extraction efficiency of minerals.

[0016] The outer wall of the frothing disc slides up and down against the inner wall of the inner ring of the flotation tank. The frothing disc is mounted on the hexagonal bearing of the power shaft. The bottom ring notch of the frothing disc floats and overlaps with the inner ring boss of the flotation tank. When the power shaft rotates, the bottom ring notch and the inner ring boss of the flotation tank float and fit together. The frothing disc injects more air into the suspension, improving the foaming efficiency and flotation efficiency of the suspension surface. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is an exploded view of the entire invention;

[0019] Figure 3 This is a cross-sectional view of the entire invention;

[0020] Figure 4 This is a schematic diagram of the installation of the driven shaft of the present invention;

[0021] Figure 5 This is a cross-sectional view of the driven shaft of the present invention.

[0022] Figure 6 This is a cross-sectional view of the flotation tank of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the power shaft of the present invention;

[0024] Figure 8 This is a cross-sectional view of the power shaft of the present invention;

[0025] Figure 9 This is a schematic diagram of the foaming plate of the present invention;

[0026] Figure 10 This is a schematic diagram of the structure of the support frame of the present invention;

[0027] Figure 11 This is a schematic diagram of the driven shaft of the present invention;

[0028] Figure 12 This is a cross-sectional view of the driven shaft of the present invention.

[0029] exist Figures 1 to 12The correspondence between component names or lines and attached drawing numbers is as follows: Flotation tank 1, Inner ring port 101, Inner ring boss 102, Feed guide trough 103, Slag discharge port 104, Rotating shaft platform 105, Plug 2, Power shaft 3, Outer propeller shaft 301, Air outlet shaft seat 302, Transmission shaft seat 303, External thread shaft seat 304, Hexagonal shaft seat 305, Cross shaft seat 306, Rotating shaft seat 307, Connecting port 308, Air guide groove 309, Cross scraper 4, Foaming 5. Disc, 501. Foaming hole, 502. Hexagonal shaft hole, 503. Bottom ring notch, 6. T-nut, 7. Drive gear, 8. Driven gear, 9. Branch bracket, 901. Central shaft opening, 902. Branch shaft opening, 903. Air guide hole, 10. Driven shaft, 10. Central shaft, 1001. Air intake shaft seat, 1002. Clamping shaft seat, 1003. Positive spiral ring tube, 1004. Reverse spiral ring tube, 1005. Exhaust hole, 1006. Air passage groove, 1007. Double-headed hollow shaft motor, 11. Detailed Implementation

[0030] Please refer to Figures 1 to 12 ;

[0031] This embodiment provides a flotation machine for automatic ore screening, including a flotation tank 1 for adding minerals and suspension, and a double-headed hollow shaft motor 11 for power supply at its bottom center. The hollow output shaft of the double-headed hollow shaft motor 11 is engaged with a power shaft 3 for transmission. High-pressure gas is supplied to the hollow output shaft of the double-headed hollow shaft motor 11 by external equipment. A slidable frothing disc 5 is provided on the top of the power shaft 3. When the power shaft 3 rotates, the bottom ring notch 503 of the frothing disc 5 floats and engages with the inner ring boss 102 of the flotation tank 1, allowing the frothing disc 5 to inject more air into the suspension, thus improving the frothing rate and flotation efficiency of the equipment. Multiple driven shafts 10 are distributed in a circumferential array around the power shaft 3 via a bracket 9. The air passages inside the shaft 10, power shaft 3, and support bracket 9 are connected. High-pressure gas is uniformly injected into the fluid in the flotation tank 1 through the driven shaft 10, increasing the air content inside the equipment and improving the foaming rate and flotation efficiency. The power shaft 3 drives the driven shaft 10 to rotate through the meshing of the power gear 7 and the driven gear 8. While revolving around the power shaft 3, the driven shaft 10 rotates synchronously on its own axis. A positive spiral ring tube 1004 and a negative spiral ring tube 1005 are respectively installed on both sides of the driven shaft 10. While rotating, the driven shaft 10 drives the fluid inside the flotation tank 1 to circulate and agitate in the vertical direction, improving the stirring efficiency of the fluid inside the flotation tank 1, allowing the minerals and suspension to come into more sufficient contact, and improving the flotation efficiency of the suspension.

[0032] Preferably, the flotation tank 1 is cylindrical, with an inner ring opening 101 on the inner wall of the top opening of the flotation tank 1, and an inner ring boss 102 with circumferentially distributed inclined sides at the bottom of the inner ring opening 101. A feed guide trough 103 is provided on the outer right side of the top opening of the flotation tank 1, and a rotating shaft 105 with a through circular hole at the center of the bottom of the inner wall of the flotation tank 1 is provided. A slag discharge port 104 is provided on the bottom left side of the outer wall of the flotation tank 1.

[0033] Preferably, a removable plug 2 is fitted inside the slag discharge port 104 of the flotation tank 1, and a rotatable power shaft 3 is inserted inside the rotating shaft platform 105 of the flotation tank 1.

[0034] In a specific embodiment, the mineral residue in the flotation tank 1 is deposited at the bottom of the flotation tank 1, and is cleaned and discharged by the slag discharge port 104 provided at the bottom.

[0035] Preferably, the main body of the power shaft 3 is an outer propeller shaft 301 with helical blades on its outer wall. An air outlet bearing 302 is provided at the center of both the upper and lower surfaces of the outer propeller shaft 301. A bracket 9 is fitted onto each of the air outlet bearings 302 on both the upper and lower surfaces of the outer propeller shaft 301. The air outlet bearing 302 is a frustum with a semi-circular groove at its center on its side. A drive shaft bearing 303 in the shape of a smooth shaft is provided on the top of the air outlet bearing 302 on the upper surface of the outer propeller shaft 301. The power gear 7 is nested in the drive shaft bearing 303 and rotates accordingly. An external thread bearing 304 with external threads is provided on the top of the drive shaft bearing 303. A T-nut 6 engages and locks with the external threads of the external thread bearing 304. A hexagonal bearing 305 in the shape of a hexagonal boss is provided on the top of the external thread bearing 304. The bubble-making disc 5 floats and is fitted onto the hexagonal boss. On the hexagonal shaft seat 305, a cross shaft seat 306 is provided on the top of the hexagonal shaft seat 305. The cross shaft seat 306 has a truncated cone with a cross notch at its center. The cross scraper 4 is fixedly inserted in the cross notch of the cross shaft seat 306 and rotates accordingly. The bottom of the air outlet shaft seat 302 on the lower surface of the outer propeller shaft 301 is provided with a smooth shaft-shaped rotating shaft seat 307. The bottom center of the rotating shaft seat 307 is provided with a connecting port 308. The hollow output shaft at the upper end of the double-headed hollow shaft motor 11 is inserted and passed through the connecting port 308. The double-headed hollow shaft motor 11 is fixed to the bottom center of the flotation tank 1. The power shaft 3 is provided with an air guide groove 309 inside. The air guide groove 309 is connected to the semi-circular groove on the side of the air outlet shaft seat 302 on the upper and lower surfaces of the outer propeller shaft 301. The air guide groove 309 is connected to the connecting port 308.

[0036] In a specific embodiment, when the power shaft 3 rotates, the cross scraper 4 rotates with the power shaft 3. The cross scraper 4 uses centrifugal force to throw the foam containing minerals at the top of the flotation tank 1 out of the feed trough 103 of the flotation tank 1, and the foam is collected and stored by the equipment of the subsequent station.

[0037] Preferably, the branch support 9 is in the shape of a hexagonal tree with a central shaft opening 901 at its center. Each branch of the branch support 9 has a branch shaft opening 902 at its top. The middle section of the side wall of the branch shaft opening 902 and the central shaft opening 901 is provided with a connecting air guide hole 903. The central shaft opening 901 of the branch support 9 is nested on the air outlet bearing 302 of the power shaft 3 and rotates accordingly. The air guide hole 903 is connected to the air guide groove 309. The driven shaft 10 rotates through the branch shaft opening 902 of the branch support 9.

[0038] In a specific embodiment, a semi-circular groove is provided at the center of the side of the air outlet bearing 302 of the power shaft 3. The air guide groove 309 is connected to the semi-circular groove on the side of the air outlet bearing 302 on the upper and lower surfaces of the outer propeller shaft 301. The semi-circular groove of the air outlet bearing 302 allows the power shaft 3 to still form a passage with the air guide hole 903 of the sub-support 9 while rotating.

[0039] Preferably, the driven shaft 10 is a central shaft 1001 in the shape of a smooth shaft. An intake bearing 1002 is provided at the center of both the upper and lower surfaces of the central shaft 1001. The intake bearing 1002 is a frustum with a semi-circular annular groove at the center of its side. A smooth shaft-shaped locking bearing 1003 is provided at the top of the intake bearing 1002 on the upper surface of the central shaft 1001. The driven gear 8 is nested in the locking bearing 1003 and rotates accordingly. Semi-arc-shaped positive spiral annular tubes 1004 and negative spiral annular tubes 1005 are respectively provided on the left and right sides of the central shaft 1001. The spiral ring tube 1004 and the reverse spiral ring tube 1005 are internally provided with a positive spiral track and a reverse spiral track. The central shaft 1001, the positive spiral ring tube 1004 and the reverse spiral ring tube 1005 are internally provided with a communicating air passage groove 1007. The air passage groove 1007 is connected to the semi-circular annular groove on the side of the air intake bearing 1002 on the upper and lower surfaces of the central shaft 1001. The air passage groove 1007 is connected to the air guide hole 903 of the sub-support 9. The central shaft 1001, the positive spiral ring tube 1004 and the reverse spiral ring tube 1005 are all provided with exhaust holes 1006.

[0040] In a specific embodiment, a semi-circular groove is provided at the center of the side of the intake shaft seat 1002 of the driven shaft 10. The air passage groove 1007 is connected to the semi-circular groove on the side of the intake shaft seat 1002 on the upper and lower surfaces of the central shaft 1001. The semi-circular groove of the intake shaft seat 1002 allows the driven shaft 10 to still form a passage with the air guide hole 903 of the bracket 9 while rotating.

[0041] In a specific embodiment, when the driven shaft 10 rotates, the positive spiral ring tube 1004 and the negative spiral ring tube 1005 rotate accordingly. When they rotate, the positive spiral track and the negative spiral track inside the positive spiral ring tube 1004 and the negative spiral ring tube 1005 drive the fluid inside the flotation tank 1 to form a vertically circulating turbulent flow. At the same time as the fluid circulates, high-pressure gas is discharged into the fluid inside the flotation tank 1 through the exhaust port 1006.

[0042] Preferably, the drive gear 7 meshes with multiple driven gears 8 to form a planetary gear structure. When the drive gear 7 rotates, the driven gears 8 rotate around it while simultaneously rotating on their own axis.

[0043] In a specific embodiment, the double-headed hollow shaft motor 11 is connected to the power shaft 3 for transmission. The power shaft 3 drives the driven shaft 10 to rotate through the meshing of the power gear 7 and the driven gear 8. When the driven shaft 10 revolves around the power shaft 3, the driven shaft 10 rotates synchronously on its own axis.

[0044] Preferably, the foaming plate 5 is a disc-shaped structure with a central boss and a circular stepped edge on the bottom surface. The surface of the foaming plate 5 is provided with dense foaming holes 501. The center of the foaming plate 5 is provided with a hexagonal shaft hole 502 with a hexagonal notch. The hexagonal shaft hole 502 is slidably fitted onto the hexagonal shaft seat 305 of the power shaft 3. The bottom surface of the circular stepped edge of the foaming plate 5 is provided with a bottom ring notch 503 with a circumferentially distributed inclined side. The outer wall of the foaming plate 5 is in contact with the inner wall of the inner ring 101 of the flotation tank 1 and slides up and down. At the same time, the bottom ring notch 503 floats and overlaps with the inner ring boss 102 of the flotation tank 1.

[0045] In use, high-pressure air is supplied to the center of the hollow output shaft at the bottom of the double-headed hollow shaft motor 11, and the double-headed hollow shaft motor 11 is started simultaneously. The minerals and suspension to be flotated are introduced into the flotation tank 1. The double-headed hollow shaft motor 11 is connected to the drive shaft 3 for transmission. As the driven shaft 10 revolves around the drive shaft 3, the driven shaft 10 rotates synchronously on its own axis. While rotating, the driven shaft 10 drives the fluid inside the flotation tank 1 to move vertically through the forward spiral ring tube 1004 and the reverse spiral ring tube 1005. The system circulates upwards, while high-pressure gas passes through the air guide groove 309, air guide hole 903, and air passage groove 1007 and is introduced into the internal fluid of the flotation tank 1 through the exhaust hole 1006. The foaming plate 5 rotates with the power shaft 3, and the bottom ring notch 503 of the foaming plate 5 floats and fits with the inner ring boss 102 of the flotation tank 1. Dense foam is formed on the surface of the suspension in the flotation tank 1. The cross scraper 4 rotates with the power shaft 3 and throws the foam on the surface of the suspension out of the feed trough 103 of the flotation tank 1 for collection and storage.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A flotation machine for automatic screening of ores, comprising a flotation tank (1) for adding minerals and suspension, and a double-headed hollow shaft motor (11) for providing power at the center of its bottom, wherein the hollow output shaft of the double-headed hollow shaft motor (11) is engaged with the power shaft (3) for transmission, and high-pressure gas is supplied to the hollow output shaft of the double-headed hollow shaft motor (11) by an external device, characterized in that: The top of the power shaft (3) is equipped with a sliding foaming disc (5). When the power shaft (3) rotates, the bottom ring notch (503) of the foaming disc (5) and the inner ring boss (102) of the flotation tank (1) float up and down to fit together. The foaming disc (5) injects more air into the suspension, which improves the foaming amount and flotation efficiency of the equipment. The power shaft (3) is surrounded by multiple driven shafts (10) in a circular array through the sub-support (9). The air passages inside the driven shafts (10), the power shaft (3) and the sub-support (9) are connected. High-pressure gas is uniformly injected into the fluid in the flotation tank (1) through the driven shafts (10). The air inside the equipment... With the increase in content, the foaming amount and flotation efficiency of the equipment are increased. The power shaft (3) drives the driven shaft (10) to rotate through the meshing of the power gear (7) and the driven gear (8). When the driven shaft (10) revolves around the power shaft (3), the driven shaft (10) rotates synchronously. The driven shaft (10) is provided with a positive spiral ring tube (1004) and a reverse spiral ring tube (1005) on both sides. While rotating, the driven shaft (10) drives the fluid inside the flotation tank (1) to circulate and stir in the vertical direction, which improves the stirring efficiency of the fluid inside the flotation tank (1), makes the minerals and suspension more fully contacted, and improves the flotation efficiency of the suspension.

2. The flotation machine for automatic ore screening according to claim 1, characterized in that: The flotation tank (1) is cylindrical. The inner wall of the top opening of the flotation tank (1) is provided with an inner ring opening (101). The bottom of the inner ring opening (101) is provided with an inner ring boss (102) with a circumferentially distributed side inclined surface. The outer wall of the right side of the top opening of the flotation tank (1) is provided with a feed guide trough (103). The center of the bottom of the inner wall of the flotation tank (1) is provided with a rotating shaft platform (105) with a through circular hole in the center. The bottom of the left side of the outer wall of the flotation tank (1) is provided with a slag discharge port (104).

3. The flotation machine for automatic ore screening according to claim 2, characterized in that: A removable plug (2) is fitted inside the slag discharge port (104) of the flotation tank (1), and a rotatable power shaft (3) is inserted inside the rotating shaft platform (105) of the flotation tank (1).

4. The flotation machine for automatic ore screening according to claim 3, characterized in that: The main body of the power shaft (3) is an outer propeller shaft (301) with helical blades on its outer wall. An exhaust bearing (302) is provided at the center of both the upper and lower surfaces of the outer propeller shaft (301). A bracket (9) is fitted onto each of the exhaust bearings (302) on both the upper and lower surfaces of the outer propeller shaft (301). The exhaust bearing (302) is a frustum with a semi-circular groove at the center of its side. The top of the exhaust bearing (302) on the upper surface of the outer propeller shaft (301) is provided with… A drive shaft seat (303) in the shape of an optical shaft is provided. The power gear (7) is nested in the drive shaft seat (303) and rotates accordingly. The top of the drive shaft seat (303) is provided with an external threaded shaft seat (304) with external threads on the outer wall. The T-nut (6) engages and locks with the external threads of the external threaded shaft seat (304). The top of the external threaded shaft seat (304) is provided with a hexagonal shaft seat (305) in the shape of a hexagonal boss. The bubbler (5) floats up and down and is sleeved on the hexagonal shaft seat. On (305), a cross shaft seat (306) is provided on the top of the hexagonal shaft seat (305). The cross shaft seat (306) is a frustum with a cross notch at its center. The cross scraper (4) is fixed in the cross notch of the cross shaft seat (306) and rotates accordingly. The bottom of the air outlet shaft seat (302) on the lower surface of the outer propeller shaft (301) is provided with a smooth shaft-shaped rotating shaft seat (307). A connecting port is provided at the center of the bottom of the rotating shaft seat (307). 308), the hollow output shaft at the upper end of the double-headed hollow shaft motor (11) is inserted into the connection port (308). The double-headed hollow shaft motor (11) is fixed at the center of the bottom surface of the flotation tank (1). The power shaft (3) is provided with an air guide groove (309). The air guide groove (309) is connected to the semi-circular groove on the side of the air outlet bearing (302) on the upper and lower surfaces of the outer propeller shaft (301). The air guide groove (309) is connected to the connection port (308).

5. The flotation machine for automatic ore screening according to claim 4, characterized in that: The sub-support (9) is a hexagonal tree branch, with a central shaft opening (901) at the center. Each branch of the sub-support (9) has a branch shaft opening (902) at its top. The middle section of the side wall of the branch shaft opening (902) and the central shaft opening (901) is provided with a connecting air guide hole (903). The central shaft opening (901) of the sub-support (9) is nested on the air outlet shaft seat (302) of the power shaft (3) and rotates accordingly. The air guide hole (903) is connected to the air guide groove (309). The driven shaft (10) rotates through the branch shaft opening (902) of the sub-support (9).

6. The flotation machine for automatic ore screening according to claim 5, characterized in that: The driven shaft (10) is a central shaft (1001) in the shape of a smooth shaft. An intake shaft seat (1002) is provided at the center of both the upper and lower surfaces of the central shaft (1001). The intake shaft seat (1002) is a frustum with a semi-circular groove at the center of its side. A smooth shaft-shaped locking shaft seat (1003) is provided at the top of the intake shaft seat (1002) on the upper surface of the central shaft (1001). The driven gear (8) is nested in the locking shaft seat (1003) and rotates accordingly. Semi-arc-shaped positive spiral ring tubes (1004) and negative spiral ring tubes (1005) are respectively provided on the left and right sides of the central shaft (1001). The positive spiral ring tubes (1004) and (1005) are respectively... The central shaft (1001), the positive spiral ring (1004), and the negative spiral ring (1005) are provided with a positive spiral track and a negative spiral track. The central shaft (1001), the positive spiral ring (1004), and the negative spiral ring (1005) are provided with a communicating air passage groove (1007). The air passage groove (1007) is connected to the semi-circular annular groove on the side of the air intake bearing (1002) on the upper and lower surfaces of the central shaft (1001). The air passage groove (1007) is connected to the air guide hole (903) of the sub-support (9). The central shaft (1001), the positive spiral ring (1004), and the negative spiral ring (1005) are all provided with an exhaust hole (1006).

7. The flotation machine for automatic ore screening according to claim 4, characterized in that: The power gear (7) meshes with multiple driven gears (8) to form a planetary gear structure. When the power gear (7) rotates, the driven gears (8) rotate around it at the same time.

8. The flotation machine for automatic ore screening according to claim 4, characterized in that: The foaming plate (5) is a disc-shaped plate with a boss at the center and a circular step edge on the bottom surface. The surface of the foaming plate (5) is provided with dense foaming holes (501). The center of the foaming plate (5) is provided with a hexagonal shaft hole (502) in the shape of a hexagonal notch. The hexagonal shaft hole (502) slides up and down on the hexagonal shaft seat (305) of the power shaft (3). The bottom surface of the circular step edge of the foaming plate (5) is provided with a bottom ring notch (503) with a circumferentially distributed side that is inclined. The outer wall of the foaming plate (5) is in contact with the inner wall of the inner ring opening (101) of the flotation tank (1) and slides up and down. At the same time, the bottom ring notch (503) floats and overlaps with the inner ring boss (102) of the flotation tank (1).

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