A flotation machine with integrated motor and shaft

Abstract

This utility model discloses an integrated motor and shaft flotation machine, including a direct drive motor, a flotation mechanism, and a coaxiality maintaining mechanism for connecting the direct drive motor and the flotation mechanism. The stirring shaft includes a shaft body and a connecting block; the coaxiality maintaining mechanism includes a U-shaped barrel and a coupling; the connecting block is connected to the output shaft of the direct drive motor through the coupling, and the contact surface between the connecting block and the output shaft of the direct drive motor is set as a concave surface. One end of the coupling that connects to the connecting block is provided with a boss, which is adapted to abut against the concave surface for maintaining the coaxiality of the output shaft of the direct drive motor and the stirring shaft body; by setting the coaxiality maintaining mechanism, the coaxiality of the output shaft of the direct drive motor and the stirring shaft is ensured, thereby improving the operational stability and flotation efficiency of the flotation machine; at the same time, the structure of the stirring shaft and the connection and collaborative working mode of each component are optimized, extending the service life of the equipment, improving the overall flotation performance, and having convenient disassembly characteristics, reducing maintenance difficulty and cost.

Description

Technical Field

[0001] This utility model relates to a flotation machine with an integrated motor and shaft, belonging to the technical field of mineral flotation equipment. Background Technology

[0002] In the field of mineral flotation, the performance of flotation machines plays a crucial role in beneficiation efficiency and quality. Traditional flotation machines have a complex structural design, with the connection between the direct-drive motor and the flotation mechanism being relatively complicated, and it is difficult to effectively ensure the coaxiality between the two. For example, some common flotation machines use indirect connection methods such as belt drives, which not only result in high energy loss, but also, during long-term operation, factors such as belt elastic deformation and wear can easily lead to deviations in the coaxiality between the motor output shaft and the agitator shaft, thereby affecting the agitation effect and flotation efficiency of the flotation machine. Meanwhile, the agitator shaft of traditional flotation machines is usually a single, integral structure, which presents problems such as inconvenience in installation and poor stability when connecting it to the motor and installing components such as the water impeller. Moreover, in the mineral slurry environment, the agitator shaft is prone to wear, especially when processing corrosive or high-hardness slurries, which significantly shortens the service life of the agitator shaft, increasing equipment maintenance costs and downtime. More importantly, the core components of traditional flotation machines, such as the motor and transmission structure, the air tank and the machine body, and the water impeller and agitator shaft, are mostly connected by welding or fixed bolts, lacking convenient disassembly design. For example, in some flotation machines, the air tank is directly welded to the upper structure. When internal components malfunction and need repair or replacement, the welded parts must be cut, which is not only cumbersome and time-consuming, but may also damage the equipment itself. If the connection between the water impeller and the agitator shaft adopts an interference fit or an integrated design, disassembly requires special tools to forcibly separate them, which can easily lead to deformation of the shaft or water impeller, further increasing maintenance difficulty and costs, and seriously affecting the continuity of mineral processing operations.

[0003] The motor and shaft integrated flotation machine of this patent is proposed to solve many problems existing in the prior art. It aims to provide a new type of flotation machine mechanism with a more compact structure, easy coaxiality maintenance, stable and durable stirring shaft, good synergistic effect of each component, and convenient disassembly performance. Utility Model Content

[0004] The purpose of this utility model is to provide a flotation machine with an integrated motor and shaft. By setting a coaxiality maintaining mechanism, the coaxiality of the direct drive motor output shaft and the stirring shaft is ensured, thereby improving the operational stability and flotation efficiency of the flotation machine. At the same time, the structure of the stirring shaft and the connection and collaborative working mode of each component are optimized to extend the service life of the equipment, improve the overall flotation performance, and have convenient disassembly characteristics, reducing maintenance difficulty and cost.

[0005] The present invention is: a motor and shaft integrated flotation machine, including a direct drive motor, a flotation mechanism, and a coaxiality maintaining mechanism for connecting the direct drive motor and the flotation mechanism; The flotation mechanism includes a stirring shaft, an air tank, a water wheel, and a cover plate; The stirring shaft includes a shaft body and a connecting block; the coaxiality maintaining mechanism includes a U-shaped barrel and a coupling; The connecting block is connected to the output shaft of the direct drive motor via the coupling, and the contact surface between the connecting block and the output shaft of the direct drive motor is set as a concave surface. The end of the coupling that connects to the connecting block is provided with a boss, and the boss is adapted to abut against the concave surface to maintain the coaxiality of the output shaft of the direct drive motor and the stirring shaft body.

[0006] Furthermore, the top of the U-shaped barrel is open and has a stepped surface, which is used to position and install the direct drive motor. The bottom of the U-shaped barrel has an opening for the stirring shaft to pass through and extend into the flotation mechanism.

[0007] Furthermore, the coupling and the connecting block of the stirring shaft are fixedly connected by bolts evenly distributed circumferentially, and the axis of the bolts is parallel to the axis of the stirring shaft.

[0008] Furthermore, the U-shaped barrel is also provided with a mounting bracket for connecting to external equipment. A reinforcing rib is provided between the mounting bracket and the outer surface of the U-shaped barrel. The reinforcing rib is distributed at intervals along the length direction of the mounting bracket to enhance the support strength of the mounting bracket for the U-shaped barrel.

[0009] Furthermore, the bottom of the U-shaped barrel is detachably and fixedly connected to the top of the air barrel, and a sealing gasket is provided on the connection surface between the bottom of the U-shaped barrel and the air barrel to prevent liquid leakage during the flotation process.

[0010] Furthermore, the bottom of the U-shaped barrel is provided with an annular protrusion, and the top of the air barrel is provided with an annular groove that matches the annular protrusion. The annular protrusion is embedded in the annular groove and abuts against it. The U-shaped barrel and the air barrel are fixed by bolts evenly arranged along the annular direction. The sealing gasket is sandwiched between the mating surfaces of the annular protrusion and the annular groove.

[0011] Furthermore, a number of triangular reinforcing ribs are provided between the inner sidewall and the bottom of the U-shaped barrel. The triangular reinforcing ribs are evenly distributed along the circumference of the U-shaped barrel to improve the overall structural rigidity of the U-shaped barrel.

[0012] Furthermore, the water wheel and the shaft body of the stirring shaft are connected by a key at the end away from the connecting block, and are fixed in conjunction with an axial positioning structure. The axial positioning structure includes an annular step and a locking nut at the end of the shaft body. The inner hole of the water wheel hub is provided with a keyway that matches the external key of the shaft body. After the water wheel is sleeved on the shaft body, one end of it abuts against the annular step, and the other end is locked by the locking nut to the external thread at the end of the shaft body, which is used for circumferential fixation and axial positioning of the water wheel and the stirring shaft.

[0013] Furthermore, the outer surface of the stirring shaft body is provided with a wear-resistant coating. The wear-resistant coating is made of ceramic material or tungsten carbide material, and the coating thickness is 0.5 to 2 mm, which is used to extend the service life of the stirring shaft in the slurry environment.

[0014] Furthermore, the lower surface of the cover plate is provided with a guide hole, which is coaxially arranged with the water wheel, and the inner diameter of the guide hole gradually increases from the top to the bottom, in order to guide the bubbles generated during the flotation process to be evenly distributed into the slurry. Beneficial effects

[0015] 1. By setting the contact surface between the connecting block and the output shaft of the direct drive motor to a concave surface, and setting the corresponding end of the coupling to a boss for fitting and abutting, combined with the circumferentially evenly distributed bolts for fixing, the coaxiality of the output shaft of the direct drive motor and the stirring shaft body can be effectively maintained, reducing vibration and wear during equipment operation, and improving the stability and service life of the flotation machine.

[0016] 2. The stepped surface at the top of the U-shaped tank facilitates the positioning and installation of the direct drive motor, while the bottom opening allows the stirring shaft to pass through. The U-shaped tank and the air tank are detachably fixed together via annular protrusions, annular grooves, and bolts. Combined with the sealing gasket, this prevents liquid leakage and allows for disassembly without cutting or forced separation, significantly reducing the difficulty and time cost of equipment installation, maintenance, and repair. At the same time, the direct drive motor is fixed to the stepped surface of the U-shaped tank with bolts, and the motor can be removed simply by loosening the bolts, facilitating individual inspection or replacement of the motor.

[0017] 3. The reinforcing ribs between the mounting frame and the U-shaped barrel, as well as the triangular reinforcing ribs inside the U-shaped barrel, enhance the overall structural strength of the equipment, enabling it to better adapt to complex working environments. Furthermore, the reinforcing ribs are fixed by welding to avoid critical disassembly areas, thus not affecting the disassembly and assembly of various components.

[0018] 4. The impeller and the agitator shaft are fixed by an axial positioning structure consisting of a key connection and a lock nut. During disassembly, the impeller can be removed axially along the shaft body simply by unscrewing the lock nut. There is no need to use special tools to forcibly separate them, which avoids damage to the shaft body and the impeller, reduces maintenance costs, and ensures the stability of the impeller rotation, which is conducive to improving the agitation effect and flotation efficiency.

[0019] 5. The wear-resistant coating on the outer surface of the agitator shaft can effectively resist the wear of the slurry, extend the service life of the agitator shaft, reduce the frequency of disassembly and maintenance caused by agitator shaft wear, and further reduce equipment operation and maintenance costs.

[0020] 6. The guide holes on the lower surface of the cover plate can guide the bubbles to be evenly distributed in the slurry, increasing the contact opportunities between minerals and bubbles, and improving the enrichment ratio and recovery rate of flotation; and the connection between the cover plate and the flotation mechanism is fixed with conventional bolts, which is convenient to disassemble and facilitates the maintenance of the guide holes or the components below the cover plate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a flotation machine; Figure 2 This is a partially enlarged schematic diagram of the flotation machine structure; Figure 3 This is a cross-sectional view of the flotation machine structure; Figure 4 This is a partially enlarged cross-sectional view of the flotation machine structure.

[0022] In the diagram: 1. Direct drive motor; 2. Flotation mechanism; 3. Coaxiality retention mechanism; 4. Bolts evenly arranged along the annular direction; 5. Bolts evenly distributed along the circumference; 11. Direct drive motor output shaft; 21. Stirring shaft; 22. Air tank; 23. Water wheel; 24. Cover plate; 211. Shaft body; 212. Connecting block; 221. Annular groove; 31. U-shaped barrel; 32. Coupling; 311. Stepped surface; 312. Mounting bracket; 313. Reinforcing rib; 314. Annular protrusion; 315. Triangular reinforcing rib; 241. Guide hole; a. Concave surface; b. Boss. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-4 As shown, a motor-shaft integrated flotation machine includes a direct drive motor 1, a flotation mechanism 2, and a coaxiality maintaining mechanism 3 for connecting the direct drive motor 1 and the flotation mechanism 2. The flotation mechanism 2 includes a stirring shaft 21, an air tank 22, a water wheel 23, and a cover plate 24. The stirring shaft 21 includes a shaft body 211 and a connecting block 212. The coaxiality maintaining mechanism 3 includes a U-shaped barrel 31 and a coupling 32. The connecting block 212 is connected to the output shaft 11 of the direct drive motor 1 through the coupling 32. The contact surface between the connecting block 212 and the output shaft of the direct drive motor 1 is a concave surface a. One end of the coupling 32 that is connected to the connecting block 212 is provided with a boss b. The boss b is adapted to abut against the concave surface a for maintaining the coaxiality between the output shaft of the direct drive motor 1 and the stirring shaft body 211.

[0024] like Figures 1-4As shown, the top of the U-shaped barrel 31 is open and has a stepped surface 311, which is used to position and install the direct drive motor 1. The bottom of the U-shaped barrel 31 has an opening for the stirring shaft 21 to pass through and extend into the flotation mechanism 2. The U-shaped barrel 31 is also provided with a mounting bracket 312 for connecting to external equipment. Reinforcing ribs 313 are provided between the mounting bracket 312 and the outer surface of the U-shaped barrel 31. The reinforcing ribs 313 are spaced apart along the length of the mounting bracket 312 to enhance the support strength of the mounting bracket 312 for the U-shaped barrel 31. The bottom of the U-shaped barrel 31 is detachably fixed to the top of the air tank 22. The connection surface between the bottom of the U-shaped barrel 31 and the air tank 22 is provided with a sealing gasket to prevent liquid leakage during the flotation process. The bottom of the U-shaped barrel 31 is provided with an annular protrusion 314, and the top of the air tank 22 is provided with an annular groove 221 that matches the annular protrusion 314. The annular protrusion 314 is embedded in and abuts against the annular groove 221, and the U-shaped barrel 31 and the air tank 22 are fixed by bolts 4 evenly arranged along the annular direction. A sealing gasket is sandwiched between the mating surfaces of the annular protrusion 314 and the annular groove 221. Several triangular reinforcing ribs 315 are provided between the inner sidewall and the bottom of the U-shaped barrel 31. The triangular reinforcing ribs 315 are evenly distributed along the circumference of the U-shaped barrel 31 to improve the overall structural rigidity of the U-shaped barrel 31.

[0025] like Figures 1-4 As shown, the coupling 32 and the connecting block 212 of the stirring shaft 21 are fixedly connected by bolts 5 evenly distributed along the circumference, and the axis of the bolts 5 is parallel to the axis of the stirring shaft 21. In this embodiment, the parallelism between the axis of the bolts 5 and the axis of the stirring shaft 21 further ensures the coaxiality.

[0026] like Figures 1-4 As shown, the water wheel 23 and the shaft body 211 of the stirring shaft 21 are connected by a key at the end away from the connecting block 212, and are fixed in conjunction with the axial positioning structure. The axial positioning structure includes an annular step and a locking nut at the end of the shaft body. The inner hole of the hub of the water wheel 23 is provided with a keyway that matches the external key of the shaft body. After the water wheel 23 is sleeved on the shaft body 211, one end of it abuts against the annular step, and the other end is locked by the locking nut to the external thread at the end of the shaft body 211. This is used for circumferential fixation and axial positioning of the water wheel 23 and the stirring shaft 21.

[0027] like Figures 1-4 The lower surface of the cover plate 24 shown is provided with a guide hole 241. The guide hole 241 is coaxially arranged with the water wheel 23, and the inner diameter of the guide hole 241 gradually increases from the top to the bottom, which is used to guide the bubbles generated during the flotation process to be evenly distributed into the slurry.

[0028] The above description is only used to more clearly describe the present utility model and should not be regarded as limiting the scope of protection covered by the present utility model. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present utility model.

Claims

1. A flotation machine integrating a motor and shaft, characterized in that, It includes a direct drive motor, a flotation mechanism, and a coaxiality maintaining mechanism for connecting the direct drive motor and the flotation mechanism; The flotation mechanism includes a stirring shaft, an air tank, a water wheel, and a cover plate; The stirring shaft includes a shaft body and a connecting block; the coaxiality maintaining mechanism includes a U-shaped barrel and a coupling; The connecting block is connected to the output shaft of the direct drive motor via the coupling, and the contact surface between the connecting block and the output shaft of the direct drive motor is set as a concave surface. The end of the coupling that connects to the connecting block is provided with a boss, and the boss is adapted to abut against the concave surface to maintain the coaxiality of the output shaft of the direct drive motor and the stirring shaft body.

2. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The top of the U-shaped barrel is open and has a stepped surface, which is used to position and install the direct drive motor. The bottom of the U-shaped barrel has an opening for the stirring shaft to pass through and extend into the flotation mechanism.

3. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The coupling and the connecting block of the stirring shaft are fixedly connected by bolts evenly distributed circumferentially, and the axis of the bolts is parallel to the axis of the stirring shaft.

4. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The U-shaped barrel is also provided with a mounting bracket for connecting to external equipment. A reinforcing rib is provided between the mounting bracket and the outer surface of the U-shaped barrel. The reinforcing rib is distributed at intervals along the length of the mounting bracket to enhance the support strength of the mounting bracket for the U-shaped barrel.

5. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The bottom of the U-shaped barrel is detachably and fixedly connected to the top of the air barrel. A sealing gasket is provided on the connection surface between the bottom of the U-shaped barrel and the air barrel to prevent liquid leakage during the flotation process.

6. The integrated motor and shaft flotation machine according to claim 5, characterized in that, The bottom of the U-shaped barrel is provided with an annular protrusion, and the top of the air barrel is provided with an annular groove that matches the annular protrusion. The annular protrusion is embedded in the annular groove and abuts against it. The U-shaped barrel and the air barrel are fixed by bolts evenly arranged along the annular direction. The sealing gasket is sandwiched between the mating surfaces of the annular protrusion and the annular groove.

7. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The U-shaped barrel has several triangular reinforcing ribs between its inner sidewall and bottom. These triangular reinforcing ribs are evenly distributed along the circumference of the U-shaped barrel to improve its overall structural rigidity.

8. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The water wheel and the shaft body of the stirring shaft are connected by a key at the end away from the connecting block, and are fixed in conjunction with an axial positioning structure. The axial positioning structure includes an annular step and a locking nut at the end of the shaft body. The inner hole of the water wheel hub is provided with a keyway that matches the external key of the shaft body. After the water wheel is sleeved on the shaft body, one end of it abuts against the annular step, and the other end is locked by the locking nut to the external thread at the end of the shaft body. This is used for circumferential fixation and axial positioning of the water wheel and the stirring shaft.

9. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The outer surface of the stirring shaft is provided with a wear-resistant coating. The wear-resistant coating is made of ceramic material or tungsten carbide material, and the coating thickness is 0.5 to 2 mm. It is used to extend the service life of the stirring shaft in the slurry environment.

10. The integrated motor and shaft flotation machine according to claim 1, characterized in that, The lower surface of the cover plate is provided with a guide hole, which is coaxially arranged with the water wheel, and the inner diameter of the guide hole gradually increases from the top to the bottom, so as to guide the bubbles generated during the flotation process to be evenly distributed into the slurry.

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