Efficient double-air-inlet flotation machine stirring device

Abstract

The utility model discloses an efficient double-air-inlet flotation machine stirring device, and relates to the technical field of beneficiation flotation, the efficient double-air-inlet flotation machine stirring device is provided with a bearing body which is fixedly connected with a flotation machine groove body, the lower end of the bearing body is fixedly connected with a connecting pipe, the lower end of the connecting pipe is fixedly connected with a center cylinder, and the bearing body is connected with the center cylinder through the connecting pipe. A cover plate is fixedly connected to the lower end of the center cylinder, an upper inflation component and a large belt pulley are arranged at the top end of the hollow shaft, and an impeller is arranged on the lower section of the hollow shaft. According to the efficient double-air-inlet flotation machine stirring device, the phenomenon that coarse particle minerals sink into a tank is avoided in the sorting process, the concentrate grade is effectively guaranteed, and the concentrate recovery rate is greatly increased. And the power consumption can be saved by about 15%, and the service life of easily-worn parts such as the impeller and the cover plate can be doubled.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dressing and flotation, in particular to a high-efficiency stirring device for a double-air-inlet flotation machine. Background Art

[0002] Flotation machine is one of the commonly used equipment in mines. It is widely used in the roughing and cleaning of non-ferrous metals, ferrous metals and rare precious metals. It is the main equipment to complete the mineral flotation process.

[0003] Among the existing flotation machines, when processing fluorite, lead and zinc ores with a large amount of coarse-grained minerals, the self-aspirated mechanical stirring flotation machine has a small air intake, high power consumption, and large wear of the impeller cover. Most importantly, the concentrate recovery rate is low and the concentrate grade is difficult to guarantee. When the aerated mechanical stirring flotation machine is sorting, the coarse-grained minerals cannot be discharged from the tank in time, and the trough is prone to sedimentation, which increases the stirring resistance, the motor heats up, the current increases, the flotation machine impeller is seriously worn, and the recovery rate and concentrate grade are also difficult to guarantee. The recovery rate and concentrate grade of other flotation machine models are quite different from the process requirements, so they are basically not used.

[0004] Based on this, a high-efficiency double-air-inlet flotation machine stirring device is now provided, which can eliminate the disadvantages of the existing device. Utility Model Content

[0005] The utility model aims to provide a high-efficiency double-air-inlet flotation machine stirring device to solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-efficiency double-air-intake flotation machine stirring device comprises a bearing body, the bearing body is fixedly connected to a flotation machine tank body, a connecting pipe is fixedly connected to the lower end of the bearing body, a center tube is fixedly connected to the lower end of the connecting pipe, the bearing body is connected to the center tube through the connecting pipe, a cover plate is fixedly connected to the lower end of the center tube, a self-air-intake component is connected to the outer side of the upper end of the connecting pipe, the self-air-intake component is communicated with the center tube through the connecting pipe, and a hollow shaft is inserted and connected between the cover plate, the center tube and the connecting pipe.

[0008] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0009] In an optional solution: the top end of the hollow shaft is rotatably connected to the bearing body, the bottom end of the hollow shaft is connected to a connecting flange, the top end of the connecting flange is fixedly connected to an impeller, an air distributor is installed inside the impeller, the upper end of the hollow shaft is fixedly connected to a large pulley, and the top end of the hollow shaft is connected to an upper inflatable component.

[0010] In an optional solution: the impeller has a backward-inclined double-sided blade design, and a driving member is fixed on the flotation machine to drive the impeller to move up and down and back and forth.

[0011] In an optional solution: a rubber seal is inserted and connected to the hollow shaft, and the rubber seal is connected to the connecting flange.

[0012] In an optional solution: a protective sleeve is provided on the outer side of the hollow shaft, and the material of the protective sleeve is a wear-resistant rubber tube.

[0013] In an optional scheme: the lifting member includes a machine groove, a mounting plate is fixedly provided on the upper surface of the machine groove, a threaded sleeve is rotatably provided on the inner wall of the mounting plate, a rack is fixedly provided on the top of the threaded sleeve, the rack is meshed with the driving member, a lifting cylinder is provided in the threaded sleeve, a thread is provided on the side of the lifting cylinder, the thread is threadedly connected to the threaded sleeve, the lifting cylinder is fixedly connected to the inner wall of the mounting plate through a limit block, and the hollow shaft is slidably sleeved on the slide rod.

[0014] In an optional solution: the driving member includes a servo motor, an output end of the servo motor is fixedly provided with a driving gear, and the driving gear is meshed with a rack.

[0015] In an optional solution: a rubber for sealing is fixedly provided at the connection between the threaded sleeve and the inner wall of the mounting plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This device is a flotation machine mechanical stirring device with slurry suction capability, which combines two air intake modes: self-suction and inflation on the hollow shaft. The combination of self-suction and external low-pressure fan inflation makes the internal gas volume of the slurry in the flotation machine tank sufficient, which is conducive to the suspension and combination of coarse-grained minerals, ensuring the processing capacity and selection index of the flotation machine. When used in conjunction with the new impeller, it eliminates the influence of the coarse-grained mineral sedimentation tank, meets the needs of the market, and reduces the cost of customers.

[0018] 2. Compared with the hollow shaft side inflation method, the new upper inflation method first changes the structure of the bearing body. The bearing body does not need to reserve a side inflation port. At the same time, the corresponding parts of the hollow shaft and the inflation holes of the bearing body no longer need to be processed with air inlet holes, and the check valve inside the lower end of the hollow shaft is cancelled; the new hollow shaft upper inflation method allows external low-pressure air to directly reach the bottom of the groove from the top of the hollow shaft through the inside of the hollow shaft, so that the bearing chamber in the bearing body is completely isolated from the inflation chamber. In this way, even if the check valve is cancelled, the slurry will not flow back into the bearing chamber through the inside of the hollow shaft, avoiding the wear and damage of the bearing and skeleton oil seal by the slurry, extending the service life of the bearing and oil seal, and also ensuring the normal and stable production of the flotation machine.

[0019] 3. A new impeller is used, with backward-inclined double-sided blades. The upper blades produce upward circulation of slurry, and the lower blades produce downward circulation of slurry, which can realize double circulation of slurry in the tank, which is conducive to the suspension of coarse-grained minerals, thereby preventing coarse-grained minerals from settling in the tank. The impeller is lined with a steel frame and the outer part is vulcanized with wear-resistant rubber, which not only ensures the strength of the impeller but also increases the wear resistance. The impeller and the connecting flange are connected by bolts, and there is a positioning stopper between the two to ensure the coaxiality with the hollow shaft, which is convenient for installation and disassembly.

[0020] 4. The utility model starts the servo motor and drives the rack to rotate through the active gear, so that the threaded sleeve rotates. Under the action of the threads on the surface of the lifting cylinder, the lifting cylinder moves up and down, and then the impeller moves up and down, achieving the effect of sufficient mixing and stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a plan view of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the lifting parts.

[0023] Figure 3 It is a schematic diagram of the structure of the driving component.

[0024] Figure 4 It is a cross-sectional view of the lifting member.

[0025] Figure 5 A cross-sectional view of the drive member.

[0026] Notes on the accompanying drawings: 1. Upper inflatable component; 2. Large pulley; 3. Bearing body; 4. Self-priming component; 5. Connecting pipe; 6. Protective sleeve; 7. Hollow shaft; 8. Center tube; 9. Cover plate; 10. Impeller; 11. Rubber seal; 12. Connecting flange; 13. Air distributor; 101. Machine slot; 102. Mounting plate; 200. Driving part; 201. Servo motor; 202. Driving gear; 203. Threaded sleeve; 204. Lifting cylinder; 205. Thread; 206. Rack; 207. Limit block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] In one embodiment, Figure 1-Figure 5As shown, a high-efficiency double-intake flotation machine stirring device comprises a bearing body 3, the bearing body 3 is connected and fixed to the flotation machine tank body, the lower end of the bearing body 3 is fixedly connected to a connecting pipe 5, the lower end of the connecting pipe 5 is fixedly connected to a central tube 8, the bearing body 3 is connected to the central tube 8 through the connecting pipe 5, the lower end of the central tube 8 is fixedly connected to a cover plate 9, the outer side of the upper end of the connecting pipe 5 is connected to a self-inhalation component 4, the self-inhalation component 4 is communicated with the central tube 8 through the connecting pipe 5, the cover plate 9, the central tube 8 and the connecting pipe 5 are all interspersed with a hollow shaft 7, the top end of the hollow shaft 7 is rotatably connected to the bearing body 3, the bottom end of the hollow shaft 7 is connected to a connecting flange 12, the top end of the connecting flange 12 is fixedly connected to an impeller 10, and the impeller 10 is equipped with an air distribution system. The upper end of the hollow shaft 7 is fixedly connected with a large pulley 2, and the top of the hollow shaft 7 is connected with an upper air-filling component 1. When the impeller 10 rotates, negative pressure is formed in the wheel cavity, and the impeller 10 sucks the feed ore and the intermediate ore from the feed pipe and the intermediate ore pipe into the central tube 8 respectively; when the self-inhalation component 4 is used, the air is sucked into the upper impeller cavity through the self-inhalation component 4, the connecting pipe 5, and the central tube 8, and mixed with the inhaled ore pulp; when the upper air-filling component 1 is used, the low-pressure air is transported to the impeller 10 through the hollow shaft 7, and then the low-pressure air is evenly dispersed and mixed with the ore pulp through the air distributor 13. After the air and the ore pulp are mixed, a large number of fine bubbles are formed. After the flow is stabilized by the cover plate 9, they are evenly dispersed in the flotation machine tank, forming mineralized bubbles that float to the foam layer and are scraped out by the scraper to achieve the screening of minerals.

[0029] In one embodiment, Figure 1 Figure 2 As shown, the impeller 10 has a backward-inclined double-sided blade design, and a driving member 200 is fixed on the flotation machine to drive the impeller 10 to move up and down. The driving member 200 enables the impeller to move up and down, achieving a sufficient mixing and stirring effect.

[0030] In one embodiment, Figure 1 As shown, a rubber seal 11 is inserted and connected to the hollow shaft 7 , and the rubber seal 11 is connected to a connecting flange 12 .

[0031] In one embodiment, Figure 2-Figure 5 As shown, a protective sleeve 6 is sleeved on the outer side of the hollow shaft 7, and the material of the protective sleeve 6 is a wear-resistant rubber tube.

[0032] In one embodiment, Figure 1As shown, the lifting member includes a machine slot 101, a mounting plate 102 is fixedly provided on the upper surface of the machine slot 101, a threaded sleeve 203 is rotatably provided on the inner wall of the mounting plate 102, a rack 206 is fixedly provided on the top of the threaded sleeve 203, the rack 206 is meshed with the driving member, a lifting cylinder 204 is provided with a threaded sleeve inside the threaded sleeve 203, a thread 205 is provided on the side of the lifting cylinder 204, the thread 205 is threadedly connected with the threaded sleeve 203, and the lifting cylinder 204 is connected to the mounting plate 102 through a limit block 207 The inner wall is fixedly connected, the hollow shaft 7 is slidably sleeved on the slide rod 208, and the driving part includes a servo motor 201. The output end of the servo motor 201 is fixedly provided with a driving gear 202, and the driving gear 202 is meshed with the rack 206. When the servo motor 201 is started, the rack 206 is driven to rotate through the driving gear 202, so that the threaded sleeve 203 rotates, so that under the action of the thread 205 on the surface of the lifting cylinder 204, the lifting cylinder 204 moves up and down, and then the impeller 10 moves up and down for stirring.

[0033] In one embodiment, Figure 5 As shown, a rubber for sealing is fixedly provided at the connection between the threaded sleeve 203 and the inner wall of the mounting plate 102 .

[0034] The above embodiment discloses a high-efficiency dual-intake flotation machine stirring device, wherein when the impeller 10 rotates, negative pressure is formed in the wheel cavity, and the impeller 10 sucks the feed ore and the intermediate ore from the feed ore pipe and the intermediate ore pipe into the central tube 8 respectively; when the self-inhalation component 4 is used, the air is sucked into the upper impeller cavity through the self-inhalation component 4, the connecting pipe 5, and the central tube 8, and mixed with the sucked ore pulp; when the upper inflation component 1 is used, the low-pressure air is transported to the impeller 10 through the hollow shaft 7 and then the low-pressure air is evenly dispersed and mixed with the ore pulp through the air distributor 13, and the servo motor 201 is started, and the rack 206 is driven to rotate through the driving gear 202. The screw sleeve 203 rotates, so that the screw sleeve 203 rotates, and under the action of the screw thread 205 on the surface of the lifting cylinder 204, the lifting cylinder 204 moves up and down, and then the impeller 10 moves up and down for stirring. After the air and the slurry are mixed, a large number of fine bubbles are formed. After the flow is stabilized by the cover plate 9, they are evenly dispersed in the flotation machine tank, forming mineralized bubbles that float to the foam layer and are scraped out by the scraper to achieve the screening of minerals. The combination of self-priming and hollow shaft inflation has obvious advantages. When self-priming can meet the selection requirements, it avoids unnecessary waste caused by using hollow shaft inflation, saves the external inflation system, and reduces costs. When self-priming cannot meet the selection requirements, the combination of self-priming and hollow shaft inflation is adopted to make the internal gas volume of the flotation machine tank slurry sufficient, which is conducive to the suspension and combination of coarse-grained minerals. The inflation volume can be increased or decreased through the valve as needed, which is conducive to improving the flotation processing capacity and selection index. When used in conjunction with the new impeller 10, the occurrence of coarse-grained mineral sedimentation tank phenomenon is eliminated. The two aeration modes are controlled by valves and can be switched at will, meeting the market demand to the greatest extent. In particular, a new impeller 10 is adopted, which is bolted to the connecting flange 12, and is easy to install and disassemble. The impeller 10 has backward-inclined double-sided blades, the upper blades produce the upper circulation of the slurry, and the lower blades produce the lower circulation of the slurry, which can realize the double circulation of the slurry in the tank. When it rotates, it can cause a strong stirring force, and the slurry-gas mixture formed is ejected to the surroundings of the bottom of the tank, which is conducive to the suspension of coarse-grained minerals, thereby preventing the coarse-grained minerals from settling in the tank.

[0035] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A high-efficiency double-intake flotation machine stirring device, characterized in that: The invention comprises a bearing body (3), wherein the bearing body (3) is fixedly connected to a flotation machine tank body, the lower end of the bearing body (3) is fixedly connected to a connecting pipe (5), the lower end of the connecting pipe (5) is fixedly connected to a central tube (8), the bearing body (3) is connected to the central tube (8) via the connecting pipe (5), the lower end of the central tube (8) is fixedly connected to a cover plate (9), the outer side of the upper end of the connecting pipe (5) is connected to a self-priming component (4), the self-priming component (4) is connected to the central tube (8) via the connecting pipe (5), and a hollow shaft (7) is inserted and connected between the cover plate (9), the central tube (8) and the connecting pipe (5); The top end of the hollow shaft (7) is rotatably connected to the bearing body (3), the bottom end of the hollow shaft (7) is connected to a connecting flange (12), the top end of the connecting flange (12) is fixedly connected to an impeller (10), an air distributor (13) is installed inside the impeller (10), the upper end of the hollow shaft (7) is fixedly connected to a large pulley (2), and the top end of the hollow shaft (7) is connected to an upper inflatable component (1); The impeller (10) has a backward-inclined double-sided blade design, and a lifting member is fixed on the flotation machine to drive the impeller (10) to move up and down; The lifting member comprises a machine slot (101), a mounting plate (102) is fixedly provided on the upper surface of the machine slot (101), a threaded sleeve (203) is rotatably provided on the inner wall of the mounting plate (102), a rack (206) is fixedly provided on the top of the threaded sleeve (203), the rack (206) is meshed with the driving member (200), a lifting cylinder (204) is provided in the inner thread of the threaded sleeve (203), a thread (205) is provided on the side of the lifting cylinder (204), the thread (205) is threadedly connected to the threaded sleeve (203), the lifting cylinder (204) is fixedly connected to the inner wall of the mounting plate (102) via a limit block (207), and the hollow shaft (7) is slidably sleeved on the slide rod (208).

2. The high-efficiency double-air inlet flotation machine stirring device according to claim 1 is characterized in that: A rubber seal (11) is inserted and connected to the hollow shaft (7), and the rubber seal (11) is connected to the connecting flange (12).

3. The high-efficiency double-inlet flotation machine stirring device according to claim 1 is characterized in that: A protective sleeve (6) is sleeved on the outer side of the hollow shaft (7), and the material of the protective sleeve (6) is a wear-resistant rubber tube.

4. The high-efficiency double-air inlet flotation machine stirring device according to claim 1 is characterized in that: The driving member (200) comprises a servo motor (201), and a driving gear (202) is fixedly provided at the output end of the servo motor (201), and the driving gear (202) is meshed with a rack (206).

5. The high-efficiency double-air inlet flotation machine stirring device according to claim 1 is characterized in that: A rubber for sealing is fixedly provided at the connection between the threaded sleeve (203) and the inner wall of the mounting plate (102).

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