Flotation scraper device

Abstract

The utility model discloses a flotation scraper device which comprises a motor and a plurality of groups of transmission shafts, the driving end of the motor is in transmission connection with one end of one group of transmission shafts, scraper components are arranged on the plurality of groups of transmission shafts, and bearing assemblies are in transmission connection between the end parts of two adjacent groups of transmission shafts. And the end parts of all the transmission shafts are in transition fit connection with the end parts of the corresponding bearing assemblies through half couplings. The transmission shafts and the corresponding bearing assemblies are connected in a transition fit mode through the half couplings, the overall supporting performance and stability of the flotation scraper device can be guaranteed through the transition fit connection mode, the problems that the transmission shafts are prone to breakage and short in service life can be solved, the maintenance frequency is reduced, and the service life of the flotation scraper device is prolonged. The half couplings are easy to disassemble, so that the bearing assembly is convenient to replace or maintain; in addition, the bearing seat can protect the rolling bearing, and the bearing is prevented from being in direct long-term contact or corrosion by ore bubbles, water, collecting agents and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dressing equipment, in particular to a flotation scraper device. Background Art

[0002] In the mineral processing industry, flotation machines are commonly used concentrate sorting equipment. The slurry is first adjusted to a certain concentration in a mixing barrel and sent to the flotation machine after the reagent takes effect. A frother is added to the flotation machine and stirred appropriately. The ore particles with strong hydrophobicity adhere to the bubbles and float to the surface with them, and then are scraped by the scraper shaft. Conventional scrapers and scraper shafts are hard-connected with Persian bearing seats, but the middle shaft of the flotation machine scraper is repeatedly in contact and fused with ore bubbles, water, and collectors for a long time, which can easily cause corrosion and fracture of the middle shaft. Frequent contact between the bearing and the slurry will also aggravate the damage of the bearing and cannot be maintained and needs to be replaced frequently. The prior art with patent number CN206280395U discloses a coupling for a flotation machine scraper shaft, in which a conveniently detachable coupling is arranged on a front drive shaft and a rear long drive shaft, so that when the flotation machine scraper shaft is disassembled, the front drive shaft and the rear long drive shaft can be conveniently detached from the coupling by opening a positioning pin, so as to facilitate replacement or repair. However, the front drive shaft and the rear long drive shaft are connected to the intermediate drive shaft by mortise and tenon joints, which results in poor stability and affects the working efficiency of the flotation machine. Summary of the invention

[0003] The utility model aims to solve at least one of the above-mentioned technical problems and provides a flotation scraper device, in which the bearing assembly and the transmission shaft are connected by a transition fit to improve the overall support and stability.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A flotation scraper device comprises a motor and multiple groups of transmission shafts, wherein the driving end of the motor is transmission-connected to one end of one group of the transmission shafts, the multiple groups of transmission shafts are each provided with a scraper assembly, the ends of two adjacent groups of transmission shafts are transmission-connected to a bearing assembly, and the ends of all the transmission shafts are transition-fittedly connected to the ends of the corresponding bearing assemblies through a half-coupling.

[0006] As an improvement of the above technical solution, a flange connected to one end of the half coupling is mounted on the end of the transmission shaft, and the inner wall of the half coupling is mounted on the end corresponding to the bearing assembly through a flat key.

[0007] As an improvement of the above technical solution, a plurality of first connecting holes are opened on the flange along the circumferential direction, and second connecting holes that can cooperate with the first connecting holes are opened on the outer circumference of the half coupling, and correspondingly, positioning bolts are movably inserted in the first connecting holes and the second connecting holes.

[0008] As an improvement of the above technical solution, all the bearing assemblies include an intermediate shaft, a rolling bearing and a bearing seat. The intermediate shaft is rotatably installed in the bearing seat through the rolling bearing, and the inner walls of the half-couplings are mounted on the corresponding ends of the intermediate shaft through flat keys.

[0009] As an improvement of the above technical solution, the intermediate shaft is provided with end covers that can be connected to the end faces of the rolling bearings at both ends of the rolling bearings, and a skeleton oil seal ring is provided between the inner ring of the end cover and the outer wall of the intermediate shaft.

[0010] As an improvement of the above technical solution, sealing covers are provided on the intermediate shaft and at positions outside the two groups of end covers, and the sealing covers are connected to the corresponding end covers by screws.

[0011] As an improvement of the above technical solution, the bearing seat includes an upper bearing seat and a lower bearing seat that cooperate with each other, the upper bearing seat is installed on the lower bearing seat by screws, a bearing hole is formed between the upper bearing seat and the lower bearing seat, and the intermediate shaft is rotatably installed in the bearing hole through a rolling bearing.

[0012] As an improvement of the above technical solution, an oil groove is provided on the rolling bearing in the circumferential direction, a grease adding port connected to the oil groove is provided on the upper bearing seat, and a lifting screw is movably inserted in the grease adding port.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] The utility model discloses a flotation scraper device, which connects a transmission shaft and a corresponding bearing assembly by a transition fit through a half coupling. The transition fit connection method can ensure the overall support and stability of the flotation scraper device, solve the problems of easy breakage and short service life of the transmission shaft, and reduce the frequency of maintenance. The half coupling is easy to disassemble, which is convenient for replacing or repairing the bearing assembly. In addition, the bearing seat can provide protection for the rolling bearing, avoid the bearing being directly contacted or corroded by mineral bubbles, water, collectors, etc. for a long time, thereby ensuring the stability of the transmission shaft, improving the sealing performance, and further reducing the number of maintenance times. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 The utility model embodiment is cutaway Figure 1 ;

[0018] Figure 3 The utility model embodiment is cutaway Figure 2 . DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is referred to as being "set in the middle", it does not only mean being set in the middle, as long as it is not set at both ends within the range defined by the middle. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figures 1 to 3As shown, the utility model provides a flotation scraper device, including a motor 100 and multiple groups of transmission shafts 200, the driving end of the motor 100 is transmission-connected with one end of one group of the transmission shafts 200, multiple groups of the transmission shafts 200 are provided with scraper assemblies 210, the ends of two adjacent groups of the transmission shafts 200 are transmission-connected with bearing assemblies 300, and the ends of all the transmission shafts 200 are transition-fittedly connected with the ends of the corresponding bearing assemblies 300 through half couplings 400. Among them, the bottom of all the bearing assemblies 300 is provided with a bottom plate for fixing the flotation scraper device on the flotation machine frame. The driving end of the motor 100 and one end of one group of the transmission shafts 200 can be driven by a pulley structure, that is, corresponding coaxial wheels are respectively arranged on the driving end of the motor 100 and one end of the transmission shaft 200, and then the belt is wrapped around the two groups of wheels for transmission, and then the multiple groups of the transmission shafts 200 are connected head to tail in sequence through the bearing assembly 300, and driven in sequence; the scraper assembly 210 is fixedly connected to the transmission shaft 200, and multiple scrapers can be arranged on each group of transmission shafts 200.

[0023] In a specific embodiment of the present application, a flange 420 connected to one end of a half coupling 400 is mounted on the end of the transmission shaft 200, and the inner wall of the half coupling 400 is mounted on the corresponding end of the bearing assembly 300 through a flat key 410. That is, the half coupling 400 is fixed to the bearing assembly 300 through the flat key 410, and forms a transition fit with the transmission shaft 200. Specifically, a plurality of first connection holes 421 are opened on the flange 420 along the circumference, and a second connection hole 430 that can cooperate with the first connection hole 421 is opened on the outer circumference of the half coupling 400, and positioning bolts 431 are movably inserted in the corresponding first connection hole 421 and second connection hole 430. That is, the flange 420 and the half coupling 400 are fixedly connected by the positioning bolts 431 to connect the transmission shaft 200 and the bearing assembly 300 at both ends.

[0024] In the specific implementation of the present application, all the bearing assemblies 300 include an intermediate shaft 310, a rolling bearing 320 and a bearing seat 330. The intermediate shaft 310 is rotatably mounted in the bearing seat 330 through the rolling bearing 320. The inner wall of the half coupling 400 is sleeved on the end of the intermediate shaft 310 through the flat key 410. The rolling bearing 320 can be a deep groove ball bearing, which is wrapped inside the bearing seat 330 to prevent the rolling bearing 320 from directly contacting the outside and ensure the stability of the transmission. To facilitate the installation of the bearing seat 330, the bearing seat 330 includes an upper bearing seat 331 and a lower bearing seat 332 that cooperate with each other. The upper bearing seat 322 is mounted on the lower bearing seat 332 by screws. A bearing hole is formed between the upper bearing seat 331 and the lower bearing seat 332. The intermediate shaft 310 is rotatably mounted in the bearing hole through the rolling bearing 320. In addition, in order to enhance the smoothness of the rotation of the rolling bearing 320, an oil groove 321 is opened circumferentially on the rolling bearing 320, and a grease adding port 333 connected to the oil groove 321 is opened on the upper bearing seat 331. A lifting eye screw 334 is movably inserted in the grease adding port 333. The lifting eye screw 334 can block the grease adding port 333 and can be unscrewed when lubricating oil needs to be added.

[0025] Furthermore, to improve the sealing performance, the intermediate shaft 310 is provided with end covers 340 that can be connected to the end faces of the rolling bearings 320 at both ends of the rolling bearings 320. A skeleton oil seal ring 341 is provided between the inner ring of the end cover 340 and the outer wall of the intermediate shaft 310. The skeleton oil seal ring 341 can intercept the lubricating oil to prevent the lubricating oil inside the rolling bearings 320 from flying out to both ends during the rotation process. In addition, sealing covers 350 are provided on the intermediate shaft 31 and at the positions outside the two groups of end covers 340. The sealing covers 350 are connected to the corresponding end covers 340 by screws to further improve the sealing performance.

[0026] The utility model discloses a flotation scraper device, which connects a transmission shaft 200 and a corresponding bearing assembly 300 by means of a transition fit through a half coupling 400. The transition fit connection method can ensure the overall support and stability of the flotation scraper device, solve the problem of easy breakage and short service life of the transmission shaft, and reduce the frequency of maintenance. The half coupling 400 is easy to disassemble, which is convenient for replacing or repairing the bearing assembly 300. In addition, the bearing seat 330 can provide protection for the rolling bearing 320, and prevent the rolling bearing 320 from being directly contacted or corroded by mineral bubbles, water, collectors, etc. for a long time, thereby ensuring the stability of the transmission shaft 200, improving the sealing performance, and further reducing the number of maintenance times.

[0027] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. Any modification or equivalent substitution that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. A flotation scraper device, characterized in that: It comprises a motor and a plurality of transmission shafts, wherein the driving end of the motor is transmission-connected to one end of one of the transmission shafts, a scraper assembly is provided on each of the plurality of transmission shafts, ends of two adjacent transmission shafts are transmission-connected to a bearing assembly, and ends of all the transmission shafts are transition-fittedly connected to the ends of the corresponding bearing assemblies through a half-coupling.

2. A flotation scraper device according to claim 1, characterized in that: A flange connected to one end of a half coupling is sleeved on the end of the transmission shaft, and the inner wall of the half coupling is sleeved on the end corresponding to the bearing assembly through a flat key.

3. A flotation scraper device according to claim 2, characterized in that: The flange is provided with a plurality of first connection holes along the circumferential direction, and the outer circumference of the half coupling is provided with second connection holes that can cooperate with the first connection holes, and positioning bolts are movably inserted in the corresponding first connection holes and second connection holes.

4. A flotation scraper device according to claim 2, characterized in that: All the bearing assemblies include an intermediate shaft, a rolling bearing and a bearing seat. The intermediate shaft is rotatably mounted in the bearing seat through the rolling bearing, and the inner walls of the half couplings are sleeved on the corresponding ends of the intermediate shaft through flat keys.

5. A flotation scraper device according to claim 4, characterized in that: End covers that can be connected to the end faces of the rolling bearings are mounted on the intermediate shaft at both ends of the rolling bearings, and a skeleton oil seal ring is arranged between the inner ring of the end cover and the outer wall of the intermediate shaft.

6. A flotation scraper device according to claim 5, characterized in that: Sealing covers are provided on the intermediate shaft and at positions outside the two groups of end covers, and the sealing covers are connected to the corresponding end covers via screws.

7. A flotation scraper device according to claim 6, characterized in that: The bearing seat includes an upper bearing seat and a lower bearing seat that cooperate with each other. The upper bearing seat is installed on the lower bearing seat by screws. A bearing hole is formed between the upper bearing seat and the lower bearing seat. The intermediate shaft is rotatably installed in the bearing hole through a rolling bearing.

8. A flotation scraper device according to claim 7, characterized in that: An oil groove is provided on the rolling bearing in the circumferential direction, a grease adding port connected to the oil groove is provided on the upper bearing seat, and a lifting screw is movably inserted in the grease adding port.

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