Flotation machine for coal washing in coal preparation plant

Abstract

The utility model provides a flotation machine for coal washing in a coal preparation plant, and relates to the technical field of coal mine production equipment, the flotation machine comprises a stirring tank, a fixing frame and a discharge pipe, one side of the top of the stirring tank is provided with an empty groove, the inner side of the empty groove is fixedly connected with a retainer plate, the top of the fixing frame is provided with a stirring mechanism, and the discharge pipe is connected with the fixing frame. A gas transmission mechanism is arranged at the top of the stirring tank; the motor, the driving gear, the driven gear and the rotating shaft are matched to drive the impeller to rotate in the stirring tank, large centrifugal force is generated during rotation, liquid can be thrown to the periphery, sufficient air is sucked to be mixed with ore pulp, and the ore pulp is stirred to be mixed with medicine. The aeration pump conveys outside air into the communicating vessel through the air conveying pipe, the communicating vessel conveys the air into the ventilation pipe through the communicating pipe, and then the air is directly conveyed into ore pulp and medicine through the ventilation pipe, so that the air is in direct contact with the ore pulp and the medicine, and the mixing efficiency of the air and the ore pulp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine production equipment, in particular to a flotation machine for coal washing in a coal preparation plant. Background Art

[0002] The flotation machine is suitable for the separation of non-ferrous and ferrous metals, and can also be used for the separation of non-metals such as coal fluorite and talc. The flotation machine is driven by a V-belt drive of an electric motor to drive the impeller to rotate, generating a centrifugal effect to form a negative pressure, on the one hand, to inhale sufficient air to mix with the slurry, on the other hand, to stir the slurry and mix the drugs, and at the same time to refine the foam, so that the minerals adhere to the foam, float to the surface of the slurry and then form mineralized foam; adjust the gate height to control the liquid level so that the useful foam is scraped out by the scraper;

[0003] However, during the use of traditional coal flotation machines, only an impeller is driven by a motor to rotate in the equipment to drive the air to mix with the coal slurry. However, the rotation speed of the impeller is generally constant, and the speed at which the air from the outside is sucked into the slurry is limited. It is insufficient to completely mix the air and the slurry in a short time, which affects the working efficiency of the flotation machine. Therefore, the utility model proposes a flotation machine for coal washing in a coal preparation plant to solve the above problems. Utility Model Content

[0004] In view of the above problems, the utility model proposes a flotation machine for coal washing in a coal preparation plant to solve the problem in the prior art that the impeller rotates at a constant speed, the speed at which air from the outside is sucked into the slurry is limited, and the air and slurry are not fully mixed in a short time, thus affecting the working efficiency of the flotation machine.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical scheme: a flotation machine for coal washing in a coal preparation plant, comprising a stirring tank, a fixed frame and a discharge pipe, the top of the stirring tank is fixedly connected to the fixed frame, the bottom of the stirring tank is connected to the discharge pipe, an empty groove is opened on one side of the top of the stirring tank, a supporting plate is fixedly connected to the inner side of the empty groove, a stirring mechanism is provided on the top of the fixed frame, and a gas transmission mechanism is provided on the top of the stirring tank.

[0006] A further improvement is that the gas delivery mechanism includes a communicating vessel, a vent pipe, a filter, an air delivery pipe and an aeration pump; the top of the fixed frame is fixedly connected to the communicating vessel, the bottom end of the communicating vessel is provided with a plurality of vent pipes, one end of the vent pipe is fixedly connected to the filter, an aeration pump is installed on one side of the top of the mixing tank, and the output end of the aeration pump is connected to one end of the communicating vessel through the air delivery pipe.

[0007] A further improvement is that the stirring mechanism includes a rotating shaft and an impeller, the bottom end of the communicating vessel is rotatably connected to the rotating shaft, the bottom end of the rotating shaft is fixedly connected to the impeller, and the outer side of one end of the ventilation pipe is fixedly connected to the bottom end of the impeller.

[0008] A further improvement is that the interior of the rotating shaft is set as a hollow structure, the bottom end of the communicating vessel is connected with a communicating pipe, and the communicating pipe passes through the interior of the rotating shaft and is connected with one end of the ventilation pipe.

[0009] A further improvement is that a driven gear is fixedly connected to the top of the rotating shaft, a motor is fixedly installed on one side of the fixing frame, a driving gear is fixedly connected to the output end of the motor, and the driven gear meshes with the outer wall of the driving gear.

[0010] A further improvement is that a scraper plate is fixedly connected to the top of the rotating shaft, an inclination angle is provided between the scraper plate and the top of the rotating shaft, and the bottom of the scraper plate is flush with the top of the empty slot.

[0011] A further improvement is that a flange is provided at one end of the motor, mounting holes are symmetrically provided on both sides of the flange, bolts are provided inside the mounting holes, and the flange is detachably connected to the fixing frame by the bolts.

[0012] The beneficial effects of the utility model are as follows: the impeller is driven to rotate inside the mixing tank through the cooperation of the motor, the driving gear, the driven gear and the rotating shaft, and a large centrifugal force is generated during rotation, so that the liquid can be thrown to the surroundings, and sufficient air is sucked in to mix with the slurry, and the slurry is stirred and mixed with the medicine. The aeration pump conveys the outside air to the inside of the communicating vessel through the air pipe, and the communicating vessel conveys the air to the inside of the ventilation pipe through the communicating pipe, and then the air is directly conveyed into the slurry and the medicine through the ventilation pipe, so that the air is directly in contact with the slurry and the medicine, thereby improving the mixing efficiency of the air and the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 This is a schematic diagram of the stirring mechanism structure of the utility model;

[0015] Figure 3 It is a top view of the utility model.

[0016] Among them: 1. Mixing tank; 2. Fixed frame; 3. Discharge pipe; 4. Empty slot; 5. Support plate; 6. U-shaped vessel; 7. Rotating shaft; 8. Impeller; 9. Ventilation pipe; 10. Filter screen; 11. Scraper plate; 12. Driven gear; 13. Motor; 14. Driving gear; 15. Air pipe; 16. Aeration pump. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0018] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a flotation machine for coal washing in a coal preparation plant, comprising a stirring tank 1, a fixing frame 2 and a discharge pipe 3. The top of the stirring tank 1 is fixedly connected with the fixing frame 2, and the bottom of the stirring tank 1 is connected with the discharge pipe 3. An empty slot 4 is opened on one side of the top of the stirring tank 1, and a supporting plate 5 is fixedly connected to the inner side of the empty slot 4. A stirring mechanism is provided on the top of the fixing frame 2, and a gas supply mechanism is provided on the top of the stirring tank 1. The slurry and the medicine are poured into the interior of the stirring tank 1, and the slurry and the medicine are rotated by the stirring mechanism to generate a centrifugal effect to form a negative pressure. On the one hand, sufficient air is inhaled to mix with the slurry, and on the other hand, the slurry and the medicine are stirred to mix, and at the same time, the foam is refined, so that the minerals are bonded to the foam and float to the surface of the slurry to form mineralized foam. During this period, the gas supply mechanism also supplies air to the slurry and the medicine to increase the efficiency of mixing air and slurry.

[0019] The stirring mechanism includes a rotating shaft 7 and an impeller 8. The bottom end of the communicating vessel 6 is rotatably connected to the rotating shaft 7. The bottom end of the rotating shaft 7 is fixedly connected to the impeller 8. The outer side of one end of the vent pipe 9 is fixedly connected to the bottom end of the impeller 8. The top of the rotating shaft 7 is fixedly connected to a driven gear 12. A motor 13 is fixedly installed on one side of the fixed frame 2. The output end of the motor 13 is fixedly connected to a driving gear 14. The driven gear 12 and the outer wall of the driving gear 14 are meshed with each other. The output end of the motor 13 drives the driving gear 14 to rotate on one side of the fixed frame 2. The driving gear 14 is meshed with the driven gear 12. The motor 13 can drive the driven gear 12 to rotate. The driven gear 12 is fixed to the impeller 8 through the rotating shaft 7. The motor 13 can drive the impeller 8 to rotate inside the stirring tank 1. A large centrifugal force is generated during rotation, which can throw the liquid to all sides, inhale sufficient air to mix with the slurry, and stir the slurry and the medicine.

[0020] The gas delivery mechanism includes a communicating vessel 6, a vent pipe 9, a filter 10, an air delivery pipe 15 and an aeration pump 16. The top of the fixed frame 2 is fixedly connected with the communicating vessel 6, and the bottom end of the communicating vessel 6 is provided with a plurality of vent pipes 9, one end of the vent pipe 9 is fixedly connected with the filter 10. An aeration pump 16 is installed on one side of the top of the mixing tank 1, and the output end of the aeration pump 16 is connected with one end of the communicating vessel 6 through the air delivery pipe 15. The interior of the rotating shaft 7 is set as a hollow structure, and the bottom end of the communicating vessel 6 is connected with a connecting pipe, and the connecting pipe passes through the interior of the rotating shaft 7 and is connected with one end of the vent pipe 9. The aeration pump 16 conveys external air to the interior of the communicating vessel 6 through the air delivery pipe 15, and the communicating vessel 6 conveys air to the interior of the vent pipe 9 through the connecting pipe, and then directly conveys air into the slurry and the medicine through the vent pipe 9, so that the air directly contacts the slurry and the medicine, thereby improving the mixing efficiency of air and slurry, wherein the filter 10 also prevents the slurry and the medicine from entering the interior of the vent pipe 9 and causing blockage.

[0021] A scraper plate 11 is fixedly connected to the top of the rotating shaft 7. An inclination angle is set between the scraper plate 11 and the top of the rotating shaft 7. The bottom of the scraper plate 11 is flush with the top height of the empty groove 4. The scraper plate 11 is fixed to the top of the rotating shaft 7. The rotating shaft 7 drives the impeller 8 to rotate while also driving the scraper plate 11 to rotate. During the rotation, the scraper plate 11 can hang on the refined foam on the top of the mixing tank 1, move the refined foam to the supporting plate 5, and discharge the material outward through the supporting plate 5 to complete the flotation and separation of the coal mine.

[0022] A flange is provided at one end of the motor 13 , mounting holes are symmetrically provided on both sides of the flange, bolts are provided inside the mounting holes, and the flange is detachably connected to the fixing frame 2 through the bolts.

[0023] The flotation machine is used in the coal washing, and the impeller 8 is driven to rotate inside the mixing tank 1 through the cooperation of the motor 13, the driving gear 14, the driven gear 12 and the rotating shaft 7. A large centrifugal force is generated during the rotation, which can throw the liquid to the surroundings, and inhale sufficient air to mix with the slurry, and stir the slurry and the medicine. The aeration pump 16 conveys the outside air to the inside of the communicating vessel 6 through the air pipe 15, and the communicating vessel 6 conveys the air to the inside of the ventilation pipe 9 through the communicating pipe, and then the air is directly conveyed into the slurry and the medicine through the ventilation pipe 9, so that the air is directly in contact with the slurry and the medicine, thereby improving the mixing efficiency of the air and the slurry.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A flotation machine for coal washing in a coal preparation plant, comprising a stirring tank (1), a fixing frame (2) and a discharge pipe (3), characterized in that: The top of the stirring tank (1) is fixedly connected to a fixing frame (2), the bottom of the stirring tank (1) is connected to a discharge pipe (3), a hollow groove (4) is provided on one side of the top of the stirring tank (1), a supporting plate (5) is fixedly connected to the inner side of the hollow groove (4), a stirring mechanism is provided on the top of the fixing frame (2), and a gas transmission mechanism is provided on the top of the stirring tank (1); The gas delivery mechanism comprises a communicating vessel (6), a vent pipe (9), a filter screen (10), an air delivery pipe (15) and an aeration pump (16); the top of the fixed frame (2) is fixedly connected to the communicating vessel (6); a plurality of vent pipes (9) are provided at the bottom of the communicating vessel (6); one end of the vent pipe (9) is fixedly connected to the filter screen (10); an aeration pump (16) is installed on one side of the top of the stirring tank (1); and the output end of the aeration pump (16) is connected to one end of the communicating vessel (6) through the air delivery pipe (15).

2. A flotation machine for coal washing in a coal preparation plant according to claim 1, characterized in that: The stirring mechanism comprises a rotating shaft (7) and an impeller (8); the bottom end of the communicating vessel (6) is rotatably connected to the rotating shaft (7); the bottom end of the rotating shaft (7) is fixedly connected to the impeller (8); and the outer side of one end of the ventilation pipe (9) is fixedly connected to the bottom end of the impeller (8).

3. A flotation machine for coal washing in a coal preparation plant according to claim 2, characterized in that: The interior of the rotating shaft (7) is configured as a hollow structure, the bottom end of the communicating vessel (6) is connected to a communicating pipe, and the communicating pipe passes through the interior of the rotating shaft (7) and is connected to one end of the vent pipe (9).

4. A flotation machine for coal washing in a coal preparation plant according to claim 2, characterized in that: A driven gear (12) is fixedly connected to the top end of the rotating shaft (7), a motor (13) is fixedly mounted on one side of the fixed frame (2), a driving gear (14) is fixedly connected to the output end of the motor (13), and the driven gear (12) and the outer wall of the driving gear (14) are meshed with each other.

5. A flotation machine for coal washing in a coal preparation plant according to claim 2, characterized in that: A scraper plate (11) is fixedly connected to the top of the rotating shaft (7), an inclination angle is provided between the scraper plate (11) and the top of the rotating shaft (7), and the bottom of the scraper plate (11) is flush with the top of the empty slot (4).

6. A flotation machine for coal washing in a coal preparation plant according to claim 4, characterized in that: A flange is provided at one end of the motor (13), mounting holes are symmetrically provided on both sides of the flange, bolts are provided inside the mounting holes, and the flange is detachably connected to the fixing frame (2) via the bolts.

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