Mechanically agitated flotation cell drive

Abstract

The utility model relates to floatation machine technical field especially is mechanical stirring type floatation machine with transmission device, including tank body, be provided with stirring mechanism on the tank body and be used for the stirring and aeration of ore pulp, and stirring mechanism includes: main part subassembly, including the bearing seat fixed on tank body, bearing seat inside rotationally installed with axle rod, mounting subassembly includes the mounting seat fixed in the axle rod bottom, is equipped with four guide holes of circumferential distribution on the mounting seat, the inside slide of mounting seat has round plate, four guide frames of circumferential distribution are fixed to the top of round plate, the guide groove is set up in the inside of guide frame, the convex rod is slidably installed in the guide groove, the plug is rotatably installed on the convex rod and is slidably installed with the guide hole through -penetration, rotor, including the impeller of installation in mounting subassembly lower extreme, adopt the plug -in type locking mechanism, when installing, through bolt drive plug radial locking rotor, form double -fixed, when dismounting, spring automatic retraction plug, realize quick assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of flotation machine technology, specifically to a transmission device for a mechanically agitated flotation machine. Background Technology

[0002] Mechanically agitated flotation machines are core equipment in mineral processing, primarily used to selectively attach target mineral particles to air bubbles and separate them through aeration and agitation. The transmission system, serving as the core of power transmission, typically consists of a motor, reduction gear, main shaft, and bearing system, driving a polyurethane rotor to rotate at high speed. This, in conjunction with the stator and stator cover, creates a stable slurry flow and bubble distribution. Due to their excellent wear resistance, corrosion resistance, and elastic damping properties, polyurethane rotors / stators are widely used in highly abrasive and corrosive slurry environments, significantly extending component life and reducing energy consumption.

[0003] According to CN210022507U, a centralized drive device for a multi-cell flotation machine is disclosed. This technology discloses "a centralized drive device for a multi-cell flotation machine, relating to the field of mining equipment technology. It includes a motor, a main drive shaft, a first transmission mechanism, a second transmission mechanism, and a clutch. The main drive shaft is connected to the motor, the first transmission mechanism connects the main drive shaft to the input side of the clutch, and the second transmission mechanism connects the output side of the clutch to the stirring mechanism." This technology offers the following advantages: "It utilizes a single motor to centrally drive the stirring mechanisms in multiple flotation cells, replacing the original solution of a single motor driving the stirring mechanism in a single flotation cell. This solves the problems of high energy consumption and high grid capacity occupation caused by decentralized driving of multi-cell flotation machines, allowing the motor to operate near its rated operating condition and maximizing its efficiency. Furthermore, this embodiment of the invention also includes a clutch, which engages the drive only after the motor has started, allowing the motor to start under no-load conditions, effectively reducing the starting current and improving the motor's service life."

[0004] In existing mechanical agitation flotation machine transmission devices, the rotor is usually directly fixed to the drive shaft by a single bolt. Under long-term high-load operation and vibration conditions, this fixing method can easily cause the bolt to fatigue or loosen, resulting in relative displacement between the rotor and the drive shaft. This can lead to eccentric rotation or detachment of the rotor, posing a safety hazard and seriously affecting the stable operation and service life of the equipment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a transmission device for a mechanically stirred flotation machine. It adopts a pin-type locking mechanism, which drives the plug to radially lock the rotor during installation, forming a double fixation. During disassembly, the spring automatically retracts the plug, enabling quick assembly and disassembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a transmission device for a mechanically agitated flotation machine, comprising a tank body, wherein an agitation mechanism is provided on the tank body for agitating and aerating the slurry, the agitation mechanism comprising:

[0007] The main component includes a bearing housing fixed on the groove, and a shaft is rotatably mounted inside the bearing housing;

[0008] The mounting assembly includes a mounting base fixed to the bottom of the shaft, four circumferentially distributed guide holes on the mounting base, a circular plate slidably mounted inside the mounting base, four circumferentially distributed guide brackets fixed to the top of the circular plate, guide grooves inside the guide brackets, protrusions slidably mounted inside the guide grooves, and plugs rotatably mounted on the protrusions and slidably mounted through the guide holes.

[0009] The rotor includes an impeller mounted at the lower end of the mounting assembly. A threaded hole is provided in the center of the impeller. A mounting cylinder is fixed to the top of the impeller. The mounting cylinder has four circumferentially distributed insertion holes, and bolts are threaded into the threaded holes.

[0010] Preferably, the mounting assembly further includes a spring installed between the upper end of the mounting base and the upper end of the threaded hole.

[0011] Preferably, the rotor further includes a thickened portion disposed in the center of the impeller, and the radial thickness of the thickened portion is 1.5 times the thickness of the impeller root.

[0012] Preferably, the main component further includes a drive component mounted on the bearing housing for driving the shaft to rotate, a central cylinder fixed at the lower end of the bearing housing, and a stator fixed at the bottom of the central cylinder.

[0013] Preferably, a scraper is rotatably mounted above the front end of the trough, and a power component is mounted on the upper end of the trough to drive the scraper.

[0014] Preferably, the guide groove has an inclination angle of 45°.

[0015] Beneficial effects

[0016] This utility model provides a transmission device for a mechanically agitated flotation machine. Compared with the prior art, it has the following advantages:

[0017] 1. When the rotor needs to be installed, the mounting sleeve is placed outside the mounting base, with the insertion hole aligned with the guide hole. Then, the bolts are tightened by rotating them. The bolts push the circular plate, which in turn moves the guide frame upward. The guide frame, through the guide groove and the convex rod, moves the plug outward along the guide hole until it is fully inserted into the insertion hole. This allows the main assembly to install and fix the rotor through the mounting assembly. When the bolts become slightly loose, the four radially distributed plugs can still maintain the rotor's stable connection through mechanical self-locking, forming a reliable secondary protection mechanism. This ensures that the rotor maintains precise alignment during long-term operation, avoiding the safety hazards of rotor displacement or detachment caused by loose threads in the traditional single bolt fixing method.

[0018] 2. When the rotor needs to be disassembled, the bolts are loosened by rotating them, and the pressure of the spring pushes the circular plate to move the guide frame downward. The guide frame, through the guide groove and the convex rod, drives the plug to retract inward along the guide hole until the plug is completely disengaged from the socket, thereby releasing the rotor from fixation and realizing the quick disassembly of the rotor. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the stirring mechanism in this utility model;

[0021] Figure 3 This is a cross-sectional view of the stirring mechanism in this utility model;

[0022] Figure 4 This utility model Figure 3 A schematic diagram of the structure of part A in the middle;

[0023] Figure 5 This is a cross-sectional view of the mounting base in this utility model;

[0024] Figure 6 This is a cross-sectional view of the rotor in this utility model.

[0025] In the diagram: 1. Tank; 2. Stirring mechanism; 21. Main component; 211. Bearing housing; 212. Shaft; 213. Drive component; 214. Central cylinder; 215. Stator; 22. Mounting component; 221. Mounting base; 222. Guide hole; 223. Circular plate; 224. Guide frame; 225. Guide groove; 226. Protruding rod; 227. Plug; 228. Spring; 23. Rotor; 231. Impeller; 232. Threaded hole; 233. Mounting cylinder; 234. Insertion hole; 235. Bolt; 236. Thickened part; 3. Scraper; 4. Power component. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 6 This utility model provides a technical solution: a transmission device for a mechanically stirred flotation machine, including a tank 1, on which a stirring mechanism 2 is provided for stirring and aerating the slurry. The stirring mechanism 2 includes:

[0028] The main component 21 includes a bearing seat 211 fixed on the groove 1, and a shaft 212 is rotatably mounted inside the bearing seat 211;

[0029] Mounting assembly 22 includes a mounting base 221 fixed to the bottom of shaft 212. The mounting base 221 has four circumferentially distributed guide holes 222. A circular plate 223 is slidably mounted inside the mounting base 221. Four circumferentially distributed guide brackets 224 are fixed to the top of the circular plate 223. A guide groove 225 is opened inside the guide bracket 224. A protruding rod 226 is slidably mounted inside the guide groove 225. A plug 227 is rotatably mounted on the protruding rod 226 and slides through the guide hole 222.

[0030] The rotor 23 includes an impeller 231 mounted on the lower end of the mounting assembly 22. A threaded hole 232 is provided in the center of the impeller 231. A mounting cylinder 233 is fixed on the top of the impeller 231. Four circumferentially distributed insertion holes 234 are provided on the mounting cylinder 233. Bolts 235 are threadedly installed in the threaded holes 232.

[0031] In this embodiment, when the rotor 23 needs to be installed, the mounting sleeve 233 is placed over the mounting base 221, with the insertion hole 234 aligned with the guide hole 222. Then, the bolt 235 is tightened by rotation. The bolt 235 pushes the circular plate 223, causing the guide frame 224 to move upward. The guide frame 224, through the guide groove 225 and the protrusion 226, drives the plug 227 to extend outward along the guide hole 222 until it is fully inserted into the insertion hole 234. This allows the main assembly 21 to install and fix the rotor 23 through the mounting assembly 22. When the bolt 235 becomes slightly loose, the four radially distributed plugs 227 can still maintain the stable connection of the rotor 23 through mechanical self-locking, forming a reliable secondary protection mechanism. This ensures that the rotor 23 maintains precise alignment during long-term operation, avoiding the safety hazard of rotor displacement or detachment caused by loose threads in the traditional single bolt fixing method. Furthermore, the even distribution of the plugs 227 at multiple points ensures the dynamic balance performance of the rotor 23 during high-speed rotation.

[0032] Specifically, the mounting assembly 22 also includes a spring 228 installed between the upper end of the mounting base 221 and the upper end of the threaded hole 232.

[0033] In this embodiment, when the rotor 23 needs to be disassembled, the bolt 235 is loosened by rotating, and the pressure of the spring 228 pushes the circular plate 223 to drive the guide frame 224 to move downward. The guide frame 224, through the guide groove 225 and the protrusion 226, drives the plug 227 to retract inward along the guide hole 222 until the plug 227 is completely disengaged from the socket 234, thereby releasing the fixation of the rotor 23 and realizing the rapid disassembly of the rotor 23.

[0034] Specifically, the rotor 23 also includes a thickened portion 236 disposed in the center of the impeller 231, and the radial thickness of the thickened portion 236 is 1.5 times the thickness of the root of the impeller 231.

[0035] In this embodiment, the thickened portion 236 provides a deeper thread engagement length for the threaded hole 232, ensuring a more secure and reliable connection of the bolt 235.

[0036] Specifically, the main body component 21 also includes a drive component 213 mounted on the bearing housing 211 and used to drive the shaft 212 to rotate. A central cylinder 214 is fixed at the lower end of the bearing housing 211, and a stator 215 is fixed at the bottom of the central cylinder 214.

[0037] In this embodiment, the drive component 213 provides stable power to drive the shaft 212 to rotate. The shaft 212 drives the rotor 23 to rotate through the main body component 21 and the mounting component 22, and together with the stator 215 on the periphery, forms a stable slurry flow field to ensure that the bubbles are evenly distributed.

[0038] Specifically, a scraper 3 is rotatably mounted on the upper front end of the tank 1, and a power unit 4 is mounted on the upper end of the tank 1 to drive the scraper 3.

[0039] In this embodiment, the stable driving force provided by the power component 4 drives the scraper 3 to rotate continuously along the upper edge of the tank 1, which can promptly scrape the foam layer accumulated on the surface of the slurry during the flotation process into the collection tank.

[0040] Specifically, the guide groove 225 has an inclination angle of 45°.

[0041] In this embodiment, the angle ensures that the plug 227 has sufficient radial travel when locked, so that it can be fully inserted into the socket 234 to achieve a reliable connection; and can be smoothly withdrawn when unlocked to avoid jamming.

[0042] The working principle and usage process of this utility model are as follows: First, when the rotor 23 needs to be installed, the mounting cylinder 233 is placed on the outside of the mounting base 221, and the insertion hole 234 is aligned with the guide hole 222. Then, the bolt 235 is rotated and tightened. The bolt 235 pushes the circular plate 223 to move the guide frame 224 upward. The guide frame 224, through the guide groove 225 and the protrusion 226, drives the plug 227 to extend outward along the guide hole 222 until it is fully inserted into the insertion hole 234, so that the main component 21 can install and fix the rotor 23 through the mounting component 22. When the bolt 235 is slightly loose, the four radially distributed plugs 227 can still maintain the stable connection of the rotor 23 through the mechanical self-locking action, forming a reliable secondary protection mechanism. This ensures that the rotor 23 always maintains precise alignment during long-term operation, avoiding the safety hazard of rotor displacement or detachment caused by loose threads in the traditional single bolt fixing method. Furthermore, the even distribution of the plugs 227 at multiple points ensures the dynamic balance performance of the rotor 23 during high-speed rotation.

[0043] When the rotor 23 needs to be disassembled, the bolt 235 is loosened by rotating it, and the pressure of the spring 228 pushes the circular plate 223 to move the guide frame 224 downward. The guide frame 224, through the guide groove 225 and the convex rod 226, drives the plug 227 to retract inward along the guide hole 222 until the plug 227 is completely disengaged from the socket 234, thereby releasing the fixation of the rotor 23 and realizing the quick disassembly of the rotor 23.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transmission device for a mechanically stirred flotation machine, comprising a tank (1), characterized in that: The tank (1) is equipped with a stirring mechanism (2) for stirring and aerating the slurry. The stirring mechanism (2) includes: The main component (21) includes a bearing seat (211) fixed on the groove (1), and a shaft (212) is rotatably mounted inside the bearing seat (211); The mounting assembly (22) includes a mounting base (221) fixed to the bottom of the shaft (212). The mounting base (221) has four circumferentially distributed guide holes (222). A circular plate (223) is slidably mounted inside the mounting base (221). Four circumferentially distributed guide brackets (224) are fixed to the top of the circular plate (223). A guide groove (225) is opened inside the guide bracket (224). A protruding rod (226) is slidably mounted inside the guide groove (225). A plug (227) is rotatably mounted on the protruding rod (226) and slidably mounted through the guide hole (222). The rotor (23) includes an impeller (231) mounted on the lower end of the mounting assembly (22). A threaded hole (232) is provided in the center of the impeller (231). A mounting cylinder (233) is fixed on the top of the impeller (231). Four circumferentially distributed insertion holes (234) are provided on the mounting cylinder (233). A bolt (235) is threaded into the threaded hole (232).

2. The transmission device for a mechanically stirred flotation machine according to claim 1, characterized in that: The mounting assembly (22) also includes a spring (228) installed between the upper end of the mounting base (221) and the upper end of the threaded hole (232).

3. The transmission device for a mechanically stirred flotation machine according to claim 1, characterized in that: The rotor (23) also includes a thickened portion (236) disposed in the center of the impeller (231), and the radial thickness of the thickened portion (236) is 1.5 times the thickness of the root of the impeller (231).

4. The transmission device for a mechanically stirred flotation machine according to claim 1, characterized in that: The main component (21) also includes a drive component (213) mounted on a bearing housing (211) for driving the shaft (212) to rotate. A central cylinder (214) is fixed at the lower end of the bearing housing (211), and a stator (215) is fixed at the bottom of the central cylinder (214).

5. The transmission device for a mechanically stirred flotation machine according to claim 1, characterized in that: A scraper (3) is rotatably mounted above the front end of the trough (1), and a power unit (4) is mounted on the upper end of the trough (1) to drive the scraper (3).

6. The transmission device for a mechanically stirred flotation machine according to claim 1, characterized in that: The guide groove (225) has an inclination angle of 45°.

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