Wear-resistant flotation machine scraper bearing

Abstract

The utility model relates to the technical field of flotation machines, in particular to a wear-resistant flotation machine scraper bearing, which is arranged in an inflatable flotation machine and comprises a bearing main body and a bearing seat, a polytetrafluoroethylene sleeve is sleeved outside the bearing main body, and a polytetrafluoroethylene layer is arranged on the inner wall of the bearing main body; and a polytetrafluoroethylene lining is arranged on the bearing seat. According to the utility model, the polytetrafluoroethylene sleeve is sleeved outside the bearing main body, the polytetrafluoroethylene layer is arranged on the inner wall of the bearing, and the polytetrafluoroethylene lining is arranged on the bearing seat, so that under the combined action of the polytetrafluoroethylene sleeve and the polytetrafluoroethylene lining, the conditions that the bearing main body is corroded, ore pulp enters and is abraded and the like are avoided, and the normal work is ensured; normal and stable production of the flotation machine is guaranteed, the service life of a scraper bearing of the flotation machine is prolonged, mineralized bubbles can be effectively scraped and collected in time, and therefore the beneficiation efficiency is improved, the production cost is reduced, and the production efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of flotation machines, in particular to a wear-resistant flotation machine scraper bearing. Background Art

[0002] In recent years, due to the increasing demand for sulfur concentrate with a grade of more than 48%, Yunfu Pyrite Mine has upgraded and transformed the flotation series of the beneficiation line to produce high-grade sulfur concentrate with a grade of more than 48%. The flotation equipment uses a shallow trough overflow flotation machine with high processing efficiency. The impeller rotates to break up the added air and fully mix it with the inhaled slurry to form mineralized bubbles, which are scraped into the foam chute by the scraper to enter the next beneficiation process. However, during the operation, due to the weak acidity and strong corrosiveness of the sulfur concentrate slurry, and the scraper needs to be in contact with the slurry foam for a long time, the scraper bearings are often damaged due to corrosion, slurry intrusion and wear, and cannot work normally. The maintenance intensity is high and the production continuity is poor, which has a great impact on production.

[0003] In the process of scraping out foam, the scraper main shaft of the currently used pneumatic flotation machine is basically buried in the foam. Corrosive ore slurry, granular mineral powder, etc. enter the bearing, thereby corroding and wearing the bearing beads and damaging the bearing, resulting in the flotation machine being unable to work normally, requiring high maintenance intensity, and the mineralized bubbles cannot be effectively collected, resulting in poor production continuity, which has a great impact on production. Utility Model Content

[0004] The invention purpose of the utility model is to solve the problems existing in the prior art and provide a wear-resistant flotation machine scraper bearing.

[0005] In order to solve the problems existing in the prior art, the utility model adopts the following technical solutions:

[0006] A wear-resistant flotation machine scraper bearing is arranged in an inflatable flotation machine. The wear-resistant flotation machine scraper bearing comprises a bearing body and a bearing seat. The outer sleeve of the bearing body is provided with a polytetrafluoroethylene sleeve, and the inner wall of the bearing body is provided with a polytetrafluoroethylene layer; a polytetrafluoroethylene lining is provided on the bearing seat.

[0007] As an improvement of the technical solution of the wear-resistant flotation machine scraper bearing of the utility model, the bearing seat includes a bearing seat bottom and bearing seat side plates arranged on both sides of the bearing seat bottom, a cleaning hole is opened between the bearing seat bottom and the side plates, and the cleaning hole is connected to the tank body of the inflatable flotation machine through a pipeline;

[0008] The bottom of the bearing seat and the side plate of the bearing seat are both provided with spray holes, and each of the spray holes is connected to a water source through a pipeline and a pressure pump.

[0009] As an improvement of the technical solution of the wear-resistant flotation machine scraper bearing of the utility model, a baffle is arranged on the outer side of the side plate, and a partition is arranged on the outside of the baffle.

[0010] As an improvement of the technical solution of the wear-resistant flotation machine scraper bearing of the utility model, each of the spray holes is opened at a position of 45° on both sides of the bearing seat.

[0011] As an improvement on the technical solution of the wear-resistant flotation machine scraper bearing of the utility model, the aperture of the spray hole is 1.0-1.5 mm.

[0012] As an improvement on the technical solution of the wear-resistant flotation machine scraper bearing of the utility model, the diameter of the cleaning hole is 1-3 mm.

[0013] As an improvement of the technical solution of the wear-resistant flotation machine scraper bearing of the utility model, the angle between the cleaning hole and the horizontal plane is 15-30°.

[0014] As an improvement of the technical solution of the wear-resistant flotation machine scraper bearing of the utility model, the inflatable flotation machine includes a scraper motor, the scraper motor is connected to the scraper main shaft, a plurality of foam scrapers are arranged on the scraper main shaft, and the scraper main shaft is inserted into two of the wear-resistant flotation machine scraper bearings.

[0015] Beneficial effects of the utility model:

[0016] 1. In the utility model, a PTFE sleeve is provided on the outside of the bearing body, a PTFE layer is provided on the inner wall of the bearing, and a PTFE liner is provided on the bearing seat. Under the joint action of the PTFE sleeve and the PTFE liner, the bearing body is prevented from being corroded, worn by the ore pulp, etc., and the normal operation is ensured, the normal and stable production of the flotation machine is ensured, the service life of the flotation machine scraper bearing is extended, and the mineralized bubbles can be scraped out and collected in time and effectively, thereby improving the ore dressing efficiency, reducing the production cost, and ensuring the production efficiency;

[0017] 2. A cleaning hole and a spray hole are opened on the bearing seat. The spray hole is connected to a pressure pump and a water source. After the water from the water source is pressurized by the pressure pump, water is supplied to the spray hole through a pipeline. Under the combined effect of the impact force of high-pressure water, the rotation force of the scraper main shaft and the buoyancy of the water film layer, the scraper main shaft is lubricated, cooled and cleaned, and then a similar operation mode of a sliding bearing is formed to work. Since the internal pressure of the bearing cavity is greater than that of the outside, slurry and other debris will not enter the bearing cavity to cause corrosion and wear, and the dust and other debris inside the bearing cavity will be discharged through the cleaning hole under the impact force of high-pressure water and the rotation force of the scraper shaft, thereby greatly improving its service life and achieving the purpose of safe and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0020] Figure 3 The figure is a schematic diagram of the structure of a wear-resistant flotation machine.

[0021] Explanation of the reference numerals: 1-bearing body; 2-bearing seat; 3-PTFE sleeve; 4-scraper main shaft; 5-PTFE lining; 6-bearing seat bottom; 7-bearing seat side plate; 8-cleaning hole; 9-spray hole; 10-pipeline; 11-baffle; 12-partition; 13-wear-resistant flotation machine scraper bearing; 14-scraper motor; 15-foam scraper. DETAILED DESCRIPTION

[0022] In order to make the invention purpose, technical scheme and beneficial effects of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments.

[0023] like Figures 1 to 3 As shown, a wear-resistant flotation machine scraper bearing 13 is arranged in an inflatable flotation machine. The wear-resistant flotation machine scraper bearing 13 includes a bearing body 1 and a bearing seat 2. The outer sleeve of the bearing body 1 is provided with a polytetrafluoroethylene sleeve 3, and the inner wall of the bearing body 1 is provided with a polytetrafluoroethylene layer; a polytetrafluoroethylene lining 5 is provided on the bearing seat 2.

[0024] In the utility model, a polyfluoro sleeve 3 is sleeved on the outside of the bearing body 1, a polyfluoro layer is provided on the inner wall of the bearing, and a polyfluoro liner 5 is provided on the bearing seat 2. Under the joint action of the polyfluoro sleeve 3 and the polyfluoro liner 5, the bearing body 1 is prevented from being corroded, worn by the ore pulp intrusion, etc., and normal operation is ensured, the normal and stable production of the flotation machine is ensured, the service life of the flotation machine scraper bearing is extended, and the mineralized bubbles can be scraped out and collected in time and effectively, thereby improving the ore dressing efficiency, reducing the production cost, and ensuring the production efficiency.

[0025] In some embodiments of the utility model, the bearing seat 2 includes a bearing seat bottom 6 and a bearing seat side plate 7 arranged on both sides of the bearing seat bottom 6, a cleaning hole 8 is opened between the bearing seat bottom 6 and the side plate, and the cleaning hole 8 is connected to the tank body of the inflatable flotation machine through a pipe 10; the bearing seat bottom 6 and the bearing seat side plate 7 are both provided with a spray hole 9, and each spray hole 9 is connected to a water source through a pipe 10 and a pressure pump.

[0026] In detail, a cleaning hole 8 and a spray hole 9 are provided on the bearing seat 2. The spray hole 9 is externally connected to a pressure pump and a water source. After the water in the water source is pressurized by the pressure pump, water is supplied to the spray hole 9 through a pipe 10. Under the combined effect of the impact force of high-pressure water, the rotational force of the scraper main shaft 4 and the buoyancy of the water film layer, the scraper main shaft 4 is lubricated, cooled and cleaned, and then a similar sliding bearing operation mode is formed to work. Since the internal pressure of the bearing cavity is greater than that of the outside, slurry and other debris will not enter the bearing cavity to cause corrosion and wear, and dust and other debris inside the bearing cavity will be removed through the cleaning hole 8 under the impact force of high-pressure water and the rotational force of the scraper shaft, thereby greatly improving its service life and achieving the purpose of safe and stable operation.

[0027] The utility model has the advantages of simple structure, convenient manufacture and installation, strong practicality, and ensures that the flotation machine scraper bearing runs reliably and stably, is wear-resistant and corrosion-resistant, and the shaft sleeve seat design uses double-action to prevent slurry from entering the bearing cavity, and the high-pressure water film in the cavity forms a micro-positive pressure to prevent slurry from penetrating, and the bearing cavity has the functions of self-cleaning, which effectively avoids the problems of rapid corrosion and wear of the scraper bearing, large replacement workload, etc., greatly improves its service life, and the average service life can be extended by more than 5 times, thereby achieving the purpose of efficient production.

[0028] Preferably, the bearing seat 2 is made of 316 stainless steel material, and the strength of the bearing seat 2 is ensured based on the characteristics of the 316 stainless steel material.

[0029] Furthermore, a baffle plate 11 is arranged on the outer side of the side plate, and a partition plate 12 is arranged outside the baffle plate 11 to isolate the ore pulp.

[0030] In some embodiments of the present invention, each spray hole 9 is opened at a 45° position on both sides of the bearing seat 2 .

[0031] In some embodiments of the present invention, the diameter of the spray hole 9 is 1.0-1.5 mm.

[0032] In some embodiments of the present invention, the diameter of the cleaning hole 8 is 1-3 mm.

[0033] Furthermore, the angle between the cleaning hole 8 and the horizontal plane is 15-30°.

[0034] In some embodiments of the utility model, the inflatable flotation machine includes a scraper motor 14, which is connected to a scraper main shaft 4. A plurality of foam scrapers 15 are arranged on the scraper main shaft 4. The scraper main shaft 4 is inserted into two wear-resistant flotation machine scraper bearings 13.

[0035] In detail, in the present invention, the installation and use method of the present invention includes the following steps:

[0036] according to Figure 1 and Figure 2 Installation is performed, and a PTFE sleeve 3 is installed at the position of the bearing body 1 of the scraper main shaft 4 and fixed firmly; the outer sleeve of the bearing body 1 is provided with a PTFE sleeve 3, and the inner wall of the bearing body 1 is provided with a PTFE layer; a PTFE liner 5 is provided on the bearing seat 2. A cleaning hole 8 is opened between the bottom 6 of the bearing seat and the side plate 7 of the bearing seat. As an example of this embodiment, the angle between the cleaning hole 8 and the horizontal plane is 15-30°, and the aperture of the cleaning hole 8 is 2mm.

[0037] Furthermore, a baffle 11 is installed at the bottom 6 of the bearing seat. As an example of this embodiment, the angle between the baffle 11 and the vertical plane is 30°, and the preferred height is 50 mm. A partition 12 is set 10 mm outside the baffle 11, and the height of the partition 12 is 70 mm. The partition 12 is used to effectively isolate the slurry.

[0038] Spray holes 9 are respectively arranged at 45° on both sides of the bearing seat bottom 6 and the bearing seat 2. As an example of this embodiment, the diameter of the spray hole 9 is 1.2 mm. The spray hole 9 is connected to the pressure pump and the water source in sequence through the pipeline 10. Under the action of the pressure pump, the spray hole 9 forms a high-pressure nozzle, and water is sprayed out of the high-pressure nozzle. After the water in the water source is pressurized by the pressure pump, water is supplied to the spray hole 9 through the pipeline 10. Under the combined action of the high-pressure water impact force, the rotation force of the scraper main shaft 4 and the buoyancy of the water film layer, the scraper main shaft 4 is lubricated, cooled and cleaned, and then a similar sliding bearing operation mode is formed to work; since the internal pressure of the bearing cavity is greater than the external pressure, the slurry and other debris will not enter the bearing cavity to corrode, wear and tear, and the dust and other debris in the bearing cavity will be removed through the cleaning hole 8 under the high-pressure water impact force and the rotation force of the scraper shaft, thereby greatly improving its service life and achieving the purpose of safe and stable operation. The used water can flow into the internal slurry in the tank of the inflatable flotation machine.

[0039] Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the utility model.

Claims

1. A wear-resistant flotation machine scraper bearing, arranged in an inflatable flotation machine, characterized in that: The wear-resistant flotation machine scraper bearing comprises a bearing body and a bearing seat. The outer sleeve of the bearing body is provided with a polytetrafluoroethylene sleeve, and the inner wall of the bearing body is provided with a polytetrafluoroethylene layer; and a polytetrafluoroethylene lining is provided on the bearing seat.

2. The wear-resistant flotation machine scraper bearing according to claim 1, characterized in that: The bearing seat comprises a bearing seat bottom and bearing seat side plates arranged on both sides of the bearing seat bottom, a cleaning hole is opened between the bearing seat bottom and the side plates, and the cleaning hole is connected to the tank body of the inflatable flotation machine through a pipeline; The bottom of the bearing seat and the side plate of the bearing seat are both provided with spray holes, and each of the spray holes is connected to a water source through a pipeline and a pressure pump.

3. The wear-resistant flotation machine scraper bearing according to claim 2, characterized in that: A baffle is arranged on the outer side of the side plate, and a partition is arranged outside the baffle.

4. The wear-resistant flotation machine scraper bearing according to claim 2, characterized in that: Each of the spray holes is opened at a position of 45° on both sides of the bearing seat.

5. The wear-resistant flotation machine scraper bearing according to claim 2, characterized in that: The diameter of the spray hole is 1.0-1.5 mm.

6. The wear-resistant flotation machine scraper bearing according to claim 2, characterized in that: The diameter of the cleaning hole is 1-3 mm.

7. The wear-resistant flotation machine scraper bearing according to claim 2 or 6, characterized in that: The angle between the cleaning hole and the horizontal plane is 15-30°.

8. The wear-resistant flotation machine scraper bearing according to claim 1, characterized in that: The air-filled flotation machine comprises a scraper motor, which is connected to a scraper main shaft. A plurality of foam scrapers are arranged on the scraper main shaft, and the scraper main shaft is inserted into two of the wear-resistant flotation machine scraper bearings.

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