Coal flotation equipment

Abstract

The utility model relates to the technical field of flotation equipment, and discloses coal flotation equipment which comprises a base, an impeller and a lower outer cylinder, a lower shaft rod is rotatably arranged at the position, close to the middle, of the inner top face of the lower outer cylinder, an auger is fixedly arranged on the outer end face of the lower shaft rod in a sleeved mode, and a plurality of blades are fixedly arranged on the outer end face of the impeller. A conical block is rotatably arranged on the inner wall of the impeller, a base plate is embedded in the lower end face of the base, a connecting piece is fixedly arranged on the upper end face of the lower outer cylinder, an upper outer cylinder is fixedly arranged on the upper end face of the connecting piece, and a plurality of first holes are formed in the end face of the impeller. According to the utility model, by changing the angle of the impeller, increasing the volume of the blade channel of the impeller and forming the first hole in the neck rib part of the impeller, the natural stirring air inlet mode of the original impeller is changed into drainage air inlet, so that the stability of the ore pulp liquid level is promoted, and bubble suspension liquid with certain stability and buoyancy is formed; and finally, recycling of the coal in the high-ash tailings is realized.

Description

Technical Field

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

[0002] Coal flotation equipment is a kind of equipment used for coal flotation separation. It is mainly used in the process of coal washing and processing. By utilizing the differences in physical and chemical properties, coal and impurities are effectively separated. Coal flotation equipment includes flotation tank, blower, agitator, feeder and other components. The bubbles generated by the agitator and blower make the coal particles and impurity particles form bubbles in the flotation tank, thereby realizing the flotation separation of coal.

[0003] Most of the existing coal flotation equipment has a stirring air intake mode due to the impeller angle, which cannot promote the stability of the slurry surface, resulting in a low coal recovery rate. Moreover, this type of coal flotation equipment has a straight air intake and a low air intake volume. Therefore, the utility model provides a coal flotation equipment to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a coal flotation equipment, which increases the volume of the impeller blade path by changing the impeller angle and opens a first hole at the impeller neck rib to change the original impeller air intake mode of natural stirring air intake to drainage air intake, thereby promoting the stability of the slurry surface and forming a bubble suspension with certain stability and buoyancy, and finally realizing the recovery and utilization of coal in high-ash tailing coal.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal flotation device, comprising a base, an impeller and a lower outer cylinder, wherein a lower shaft is rotatably arranged at a middle position on the inner top surface of the lower outer cylinder, an auger is fixedly sleeved on the outer end surface of the lower shaft, a plurality of blades are fixedly arranged on the outer end surface of the impeller, and a cone block is rotatably arranged on the inner wall of the impeller;

[0006] The lower end surface of the base is embedded with a chassis, the upper end surface of the lower outer cylinder is fixedly provided with a connecting piece, the upper end surface of the connecting piece is fixedly provided with an upper outer cylinder, and the end surface of the impeller is provided with a plurality of first holes;

[0007] Through the above technical scheme, the equipment changes the impeller angle, increases the impeller blade volume, and opens holes in the impeller neck ribs, changing the original impeller air intake mode of natural stirring air intake to drainage air intake, promoting the stability of the slurry liquid surface, and forming a bubble suspension with certain stability and buoyancy, and finally realizing the recycling of coal in high-ash tailing coal. By installing spiral blades counterclockwise in the air inlet chamber, the original direct air intake is changed to spiral air intake, which increases the air intake volume and stabilizes the airflow size. At the same time, the impeller guide wire is used to stabilize the liquid level to achieve the purpose of efficiently decomposing coal and impurities.

[0008] Furthermore, an upper shaft rod is rotatably provided on the inner wall of the upper outer cylinder, a lower end surface of the upper shaft rod is fixedly connected to an upper end surface of the lower shaft rod, and a handle is fixedly provided on the upper end surface of the upper shaft rod;

[0009] Through the above technical solution, the upper shaft rod is driven to rotate by rotating the handle, and the upper shaft rod rotates on the inner wall of the upper outer tube, so that the upper shaft rod drives the lower shaft rod to rotate.

[0010] Furthermore, side shells are fixedly arranged on both side end surfaces of the base, and two supporting members are arranged between both sides of the upper end surface of the base and the lower tube;

[0011] Through the above technical solution, the original impeller air intake mode of natural stirring air intake is conveniently changed to drainage air intake through the side shells on both sides of the base, which promotes the stability of the slurry surface and forms a bubble suspension with certain stability and buoyancy, ultimately realizing the recovery and utilization of coal in high-ash tailings.

[0012] Furthermore, a first side tube is disposed on the upper side of one end surface of the lower outer tube, and a second side tube is disposed on the upper side of the other end surface of the lower outer tube;

[0013] Through the above technical solution, material addition and air intake and exhaust can be carried out through the first side pipe and the second side pipe on the lower outer tube.

[0014] Furthermore, the lower shaft rod is arranged on the upper inner wall of the impeller, and the lower shaft rod is embedded in the inner wall of the cone block;

[0015] Through the above technical solution, the lower shaft can drive the impeller and the cone block to rotate, making it convenient to guide the wind.

[0016] Furthermore, the impeller is rotatably arranged on the inner wall of the base, and a plurality of second holes are formed on the outer end surface of the base;

[0017] Through the above technical solution, air intake and exhaust are facilitated through the second hole on the base, and coal flotation is facilitated through the impeller arranged on the inner wall of the base.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model proposes a coal flotation equipment, which increases the impeller blade volume by changing the impeller angle and opening holes at the impeller neck ribs, thereby changing the original impeller air intake mode from natural stirring air intake to drainage air intake, promoting the stability of the slurry surface, and forming a bubble suspension with certain stability and buoyancy, and finally realizing the recovery and utilization of coal in high-ash tailing coal. Under the premise of not incurring any additional expenditure, labor input, and increase of reagents, the internal structure of the equipment is optimized to improve the coal recovery rate, minimize the investment cost, and finally achieve the purpose of improving economic benefits, and the degree of promotion is relatively high.

[0020] 2. The utility model proposes a coal flotation equipment, which changes the original direct air intake into spiral air intake by installing spiral blades counterclockwise in the air intake chamber, thereby increasing the air intake volume and stabilizing the airflow size, and at the same time cooperates with the impeller guide wire to stabilize the liquid level to achieve the purpose of efficiently decomposing coal and impurities. At the same time, in order to effectively improve the flotation accuracy and control the liquid level height, the original liquid level regulating valve of each group is changed to a liquid level regulating valve of each chamber, which can achieve single-chamber adjustment and single-chamber control, enhance operability, stabilize the quality of clean coal, and improve the ash content of tail coal. It is suitable for flotation work of various types of coal quality, breaking through geographical restrictions, and the equipment is very practical. The flotation effect has been repeatedly demonstrated, and the economic benefits are obvious. The technical process route is relatively mature, and it will not damage the original structure of the flotation equipment itself, thereby ensuring its use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 For the utility model Figure 1 A magnified schematic diagram of point A;

[0023] Figure 3 It is a structural schematic diagram of the impeller of the utility model;

[0024] Figure 4 It is a top view schematic diagram of the impeller of the utility model;

[0025] Figure 5 It is a top sectional schematic diagram of the impeller of the utility model.

[0026] Legend:

[0027] 1. Handle; 2. Upper outer tube; 3. Upper shaft; 4. First side tube; 5. Second side tube; 6. Connector; 7. Lower shaft; 8. Lower outer tube; 9. Auger; 10. Support; 11. Impeller; 12. Side shell; 13. Chassis; 14. Blades; 15. Cone block; 16. Base; 17. First hole; 18. Second hole. DETAILED DESCRIPTION

[0028] 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 in 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.

[0029] Example

[0030] Reference Figure 1-5 The utility model provides an embodiment: a coal flotation device, including a base 16, an impeller 11 and a lower outer tube 8, a lower shaft 7 is rotatably arranged at the middle position of the inner top surface of the lower outer tube 8, an auger 9 is fixedly sleeved on the outer end surface of the lower shaft 7, a plurality of blades 14 are fixedly arranged on the outer end surface of the impeller 11, a cone block 15 is rotatably arranged on the inner wall of the impeller 11, and the semicircular angle of the blade 14 of the impeller 11 is 84 degrees;

[0031] By installing the spiral blade 14 counterclockwise in the air inlet chamber, the original direct air inlet is changed to spiral air inlet, the air intake volume is increased, the air flow size is stabilized, and at the same time, the impeller 11 guides to stabilize the liquid level to achieve the purpose of efficiently decomposing coal and impurities.

[0032] The bottom surface of the base 16 is embedded with a chassis 13, the top surface of the lower outer tube 8 is fixed with a connector 6, the top surface of the connector 6 is fixed with an upper outer tube 2, and the end surface of the impeller 11 is provided with a plurality of first holes 17;

[0033] The device changes the angle of the impeller 11, increases the blade volume of the impeller 11, and opens holes at the neck of the impeller 11, thereby changing the original impeller 11 air intake mode from natural stirring air intake to drainage air intake, promoting the stability of the slurry surface and forming a bubble suspension with certain stability and buoyancy, ultimately realizing the recovery and utilization of coal in high-ash tailings.

[0034] An upper shaft rod 3 is rotatably arranged on the inner wall of the upper outer cylinder 2, the lower end surface of the upper shaft rod 3 is fixedly connected to the upper end surface of the lower shaft rod 7, a handle 1 is fixedly arranged on the upper end surface of the upper shaft rod 3, side shells 12 are fixedly arranged on both side end surfaces of the base 16, and two support members 10 are arranged between both sides of the upper end surface of the base 16 and the lower cylinder;

[0035] By turning the handle 1, the upper shaft rod 3 is driven to rotate, and the upper shaft rod 3 rotates on the inner wall of the upper outer tube 2, so that the upper shaft rod 3 drives the lower shaft rod 7 to rotate, and the side shells 12 on both sides of the base 16 are used to conveniently change the original impeller 11 air intake mode from natural stirring air intake to drainage air intake, thereby promoting the stability of the slurry surface and forming a bubble suspension with certain stability and buoyancy, and finally realizing the recovery and utilization of coal in high-ash tailings.

[0036] A first side tube 4 is disposed on the upper side of one end surface of the lower outer tube 8, a second side tube 5 is disposed on the upper side of the other end surface of the lower outer tube 8, a lower shaft rod 7 is disposed on the upper inner wall of the impeller 11, the lower shaft rod 7 is embedded in the inner wall of the cone block 15, the impeller 11 is rotatably disposed on the inner wall of the base 16, and a plurality of second holes 18 are opened on the outer end surface of the base 16;

[0037] The first side tube 4 and the second side tube 5 on the lower outer tube 8 can be used for feeding, air intake and exhaust. The lower shaft 7 can drive the impeller 11 and the cone block 15 to rotate, which is convenient for wind drainage. The second hole 18 on the base 16 facilitates air intake and exhaust, and the impeller 11 arranged on the inner wall of the base 16 facilitates coal flotation.

[0038] Working principle: by changing the angle of the impeller 11, the blade channel volume of the impeller 11 is increased, and at the same time, a first hole 17 is opened at the neck of the impeller 11, and the original impeller 11 air intake mode of natural stirring air intake is changed to drainage air intake, which promotes the stability of the slurry liquid surface and forms a bubble suspension with certain stability and buoyancy, and finally realizes the recovery of coal in high-ash tailings. By installing spiral blades 14 counterclockwise in the air intake chamber, the original direct air intake is changed to spiral air intake, the air intake volume is increased, the air flow size is stabilized, and the impeller 11 conductor is used to stabilize the liquid surface to achieve the purpose of efficiently decomposing coal and impurities. At the same time, in order to effectively improve the flotation accuracy and control the liquid level, the original liquid level regulating valve of each group is changed to a liquid level regulating valve of each chamber, which can achieve single-chamber adjustment and single-chamber control, enhance operability, stabilize the quality of clean coal, and improve the ash content of tailings.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal flotation device, comprising a base (16), an impeller (11) and a lower outer cylinder (8), characterized in that: A lower shaft rod (7) is rotatably arranged at a middle position on the inner top surface of the lower outer cylinder (8); an auger (9) is fixedly sleeved on the outer end surface of the lower shaft rod (7); a plurality of blades (14) are fixedly arranged on the outer end surface of the impeller (11); and a cone block (15) is rotatably arranged on the inner wall of the impeller (11); The lower end surface of the base (16) is embedded with a chassis (13), the upper end surface of the lower outer tube (8) is fixedly provided with a connecting piece (6), the upper end surface of the connecting piece (6) is fixedly provided with an upper outer tube (2), and the end surface of the impeller (11) is provided with a plurality of first holes (17).

2. A coal flotation device according to claim 1, characterized in that: An upper shaft rod (3) is rotatably arranged on the inner wall of the upper outer cylinder (2); the lower end surface of the upper shaft rod (3) is fixedly connected to the upper end surface of the lower shaft rod (7); and a handle (1) is fixedly arranged on the upper end surface of the upper shaft rod (3).

3. A coal flotation device according to claim 1, characterized in that: Side shells (12) are fixedly arranged on both side end surfaces of the base (16), and two support members (10) are arranged between both sides of the upper end surface of the base (16) and the lower tube.

4. A coal flotation device according to claim 1, characterized in that: A first side tube (4) is provided at an upper position on one end surface of the lower outer tube (8), and a second side tube (5) is provided at an upper position on the other end surface of the lower outer tube (8).

5. A coal flotation device according to claim 1, characterized in that: The lower shaft rod (7) is arranged on the upper inner wall of the impeller (11), and the lower shaft rod (7) is embedded in the inner wall of the cone block (15).

6. A coal flotation device according to claim 1, characterized in that: The impeller (11) is rotatably mounted on the inner wall of the base (16), and a plurality of second holes (18) are formed on the outer end surface of the base (16).

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