Coal slime buffer barrel with surface modification function

Abstract

The utility model discloses a coal slime buffering barrel with a surface modification function in the technical field of coal processing and utilization, which comprises an outer barrel, a sleeve stator frame and an inner barrel are fixedly connected inside the outer barrel from top to bottom in the axial direction, and the top of the outer barrel is fixedly connected with a speed reducing motor through a rack. The output end of the gear motor is coaxially connected with the stirring impeller through a coupler, and the stirring impeller is provided with two stages of scrubbing impellers which are located in the sleeve stator frame and the inner barrel respectively. By intensively scrubbing the impellers in multiple stages in the coal slime buffer barrel, the process of modifying the surface of the coal slime can be completed in the buffer barrel, so that the investment of subsequent coal slime mixing equipment and civil engineering investment are reduced, the coal slime flotation technological process is simplified, and the coal slime flotation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a coal slime buffer tank with surface modification function, belonging to the field of coal processing and utilization technology. Background Technology

[0002] Coal is a solid combustible mineral formed gradually from ancient plants buried underground through complex biochemical and physicochemical changes. Known as "black gold" and the "food of industry," coal has been one of the main energy sources used by humankind since the 18th century. Although its value has diminished considerably in the 21st century, it will remain an indispensable energy source for human production and daily life for a considerable period.

[0003] Coal production inevitably generates a large amount of coal slime, which needs to be transported to a coal slime buffer tank for storage in subsequent flotation processes. Conventional coal slime buffer tanks are round or square tanks, which only provide a large-capacity buffering function and do not treat the coal slime in any way. The coal slime in the buffer tank needs to be extracted to a coal slime conditioning equipment for further processing before it can enter the flotation stage, which increases the investment in coal slime conditioning equipment and civil engineering in the coal preparation plant's process flow. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a coal slime buffer tank with surface modification function. In view of the problem that conventional coal slime buffer tanks do not perform any treatment on the coal slime, a multi-stage scrubbing impeller is added inside the coal slime buffer tank to simplify the coal slime flotation process and improve the coal slime flotation efficiency.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] In the first aspect, this utility model provides a coal slime buffer tank with surface modification function, including an outer tank. The outer tank is axially fixedly connected from top to bottom to a sleeve stator frame and an inner tank. The top of the outer tank is fixedly connected to a geared motor through a frame. The output end of the geared motor is coaxially connected to a stirring impeller through a coupling. The stirring impeller is provided with two-stage scrubbing impellers, which are located in the sleeve stator frame and the inner tank, respectively.

[0007] Furthermore, the impeller includes an agitator shaft, and the agitator shaft is provided with an upper blade, a conical ring, a lower blade, a circular ring plate, radial blades and tangential blades from top to bottom. The upper blade, conical ring, lower blade and circular ring plate are all located in the sleeve stator frame, and the radial blades and tangential blades are all located in the inner barrel.

[0008] Furthermore, both the radial blades and the tangential blades are cuboids, with the radial blades positioned in the radial direction of the stirring shaft and the tangential blades forming an angle of 10° to 80° with the centerline of the stirring shaft.

[0009] Furthermore, the outer barrel includes a straight barrel section and a conical barrel section. The upper part of the straight barrel section is provided with a first supporting steel frame and the middle part is provided with a second supporting steel frame. The side wall of the straight barrel section above the second supporting steel frame is provided with a feed pipe. The lower part of the conical barrel section is provided with a discharge pipe. Both the feed pipe and the discharge pipe are provided with flanges. The first supporting steel frame has bolt holes and is connected to the frame by bolts.

[0010] Furthermore, the inner barrel includes a conical section, a straight section, a feed pipe, and a connecting plate. The straight section has a feed pipe on its side wall. The number of feed pipes and the feed pipe are the same, the same diameter, and coaxial. The connecting plate has bolt holes and is connected to the second support steel frame by bolts. There is a gap of 0.1mm to 50mm between the feed pipes and the feed pipe.

[0011] Furthermore, the sleeve stator frame is provided with a connecting flange, a straight pipe, a tapered pipe, stator blades and an annular plate from top to bottom. The connecting flange is provided with bolt holes and is connected to the first support steel frame by bolts. The straight pipe has a funnel-shaped agent tube on its side wall. The angle between the center line of the stator blades and the annular plate is 5° to 60°.

[0012] Furthermore, the angle between the upper edge of the upper blade and the center line of the stirring shaft is the same as the cone angle of the conical tube, and the angle between the lower edge of the upper blade and the center line of the stirring shaft is the same as the cone angle of the conical ring.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0014] I. This utility model integrates multiple stages of scrubbing impellers within the coal slime buffer tank, enabling the surface modification of coal slime to be completed within the buffer tank. This solves the problem that conventional coal slime buffer tanks do not perform any treatment on the coal slime, reducing investment in subsequent coal slime preparation equipment and civil engineering, simplifying the coal slime flotation process, and improving coal slime flotation efficiency.

[0015] II. This utility model uses a geared motor to sequentially drive the coupling and the agitator impeller to rotate. The coal slime slurry enters the inner tank through the feed pipe, and passes through the shearing blades and radial blades in sequence, which strongly scrubs the surface of the coal slime particles, completing the surface modification treatment of the coal particles. The coal slime slurry continues to move upward, passing through the lower blades and stator blades before being discharged into the outer tank. The flotation reagents and air enter the upper blades through the reagent pipe, and after being crushed and dispersed by the upper blades, they are discharged into the outer tank through the stator blades, realizing the functions of coal slime surface modification and flotation reagent crushing and dispersion. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 A schematic diagram of the overall structure of a coal slime buffer tank with surface modification function provided for an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the outer barrel structure of a coal slime buffer tank with surface modification function provided for an embodiment of this utility model;

[0019] Figure 3 A schematic diagram of the inner barrel structure of a coal slime buffer tank with surface modification function provided for an embodiment of this utility model;

[0020] Figure 4 A schematic diagram of the sleeve stator frame structure of a coal slime buffer tank with surface modification function provided for an embodiment of this utility model;

[0021] Figure 5 A cross-sectional view of the stator blades of a coal slime buffer tank with surface modification function provided for an embodiment of this utility model;

[0022] Figure 6 A schematic diagram of the stirring impeller structure of a coal slime buffer tank with surface modification function provided in this embodiment of the present invention;

[0023] Figure 7 A schematic diagram of the upper blade structure of a coal slime buffer tank with surface modification function provided for an embodiment of this utility model;

[0024] Figure 8 A schematic diagram of the tangential blade structure of a coal slime buffer tank with surface modification function provided for an embodiment of this utility model;

[0025] In the diagram: 1. Gear motor; 2. Coupling; 3. Frame; 4. Sleeve stator frame; 401. Connecting flange; 402. Straight pipe; 403. Conical pipe; 404. Stator blades; 405. Annular plate; 406. Chemical tube; 407. Funnel; 5. Agitator impeller; 501. Agitator shaft; 502. Upper blades; 503. Conical ring; 504. Lower blades; 505. Circular ring plate; 506. Radial blades; 507. Tangential blades; 6. Inner barrel; 601. Conical section; 602. Straight section; 603. Feed pipe; 604. Connecting plate; 7. Outer barrel; 701. Straight barrel section; 702. Conical barrel section; 703. First support steel frame; 704. Feed pipe; 705. Second support steel frame; 706. Discharge pipe. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0027] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0028] Example:

[0029] Please see Figure 1 This embodiment discloses a coal slime buffer tank with surface modification function, including a geared motor 1, a coupling 2, a sleeve stator frame 4, an agitator impeller 5, an inner tank 6, and an outer tank 7. The inner tank 6 is fixedly installed in the outer tank 7, and the output shaft of the geared motor 1, the coupling 2, the sleeve stator frame 4, the agitator impeller 5, the inner tank 6, and the outer tank 7 are on the same center line. The geared motor 1 is fixed above the outer tank 7 by a frame 3. The output shaft of the geared motor 1 is coaxially connected to the agitator impeller 5 through the coupling 2. The upper blades of the agitator impeller 5 are located in the sleeve stator frame 4, and the lower blades are located in the inner tank 6. The geared motor 1 drives the agitator impeller 5 to rotate, which can perform surface modification treatment on coal particles and crush and disperse flotation reagents, reduce equipment and civil engineering investment, simplify the coal slime flotation process, and improve flotation efficiency.

[0030] Please see Figure 2 The outer barrel 7 includes a straight barrel section 701 and a conical barrel section 702. The upper part of the straight barrel section 701 is provided with a first supporting steel frame 703, and the middle part of the straight barrel section 701 is provided with a second supporting steel frame 705. Several feed pipes 704 are provided on the side wall of the straight barrel section 701. The feed pipes 704 are located above the second supporting steel frame 705. The lower part of the conical barrel section 702 is provided with a discharge pipe 706. Both the feed pipes 704 and the discharge pipes 706 are provided with flanges for connecting other devices. It should be noted that the first supporting steel frame 703 has bolt holes and is connected to the frame 3 by bolts. The sleeve stator frame 4 is located below the first supporting steel frame 703.

[0031] Please see Figure 3The inner barrel 6 includes a conical section 601, a straight section 602, a feed pipe 603, and a connecting plate 604. The side wall of the straight section 602 is provided with several feed pipes 603. The number of feed pipes 603 and feed pipes 704 is the same. The feed pipes 603 and feed pipes 704 have the same diameter and are coaxial. The connecting plate 604 is provided with bolt holes and is connected to the second support steel frame 705 by bolts. There is a gap between the feed pipes 603 and feed pipes 704. In this embodiment, the gap is 0.1mm to 50mm.

[0032] Please see Figure 4 The sleeve stator frame 4, from top to bottom, is provided with a connecting flange 401, a straight pipe 402, a tapered pipe 403, several stator blades 404, and an annular plate 405. A chemical tube 406 is provided on the side wall of the straight pipe 402, and a funnel 407 is provided at one end of the chemical tube 406. In this embodiment, the connecting flange 401 has bolt holes and is connected to the first support steel frame 703 by bolts. Please refer to... Figure 5 The angle between the center lines of the stator blade 404 and the annular plate 405 is α, and in this embodiment, the value of α is 5° to 60°.

[0033] Please see Figure 1 and Figure 6 The impeller 5 includes an agitator shaft 501, which is provided with several upper blades 502, a conical ring 503, several lower blades 504, a circular ring plate 505, several radial blades 506, and several tangential blades 507 from top to bottom. The radial blades 506 and tangential blades 507 of the impeller 5 are located in the inner barrel 6, while the upper blades 502, conical rings 503, lower blades 504, and circular ring plates 505 are all located in the sleeve stator frame 4.

[0034] Please see Figure 7 The angle between the upper edge line 50201 of the upper blade 502 and the center line of the stirring shaft 501 is the same as the cone angle of the cone tube 403; the angle between the lower edge line 50202 of the upper blade 502 and the center line of the stirring shaft 501 is the same as the cone angle of the conical ring 503.

[0035] Please see Figure 6 and Figure 8 Both the radial blade 506 and the tangential blade 507 are cuboids. The radial blade 506 is located in the radial direction of the stirring shaft 501. The angle between the tangential blade 507 and the center line of the stirring shaft 501 is β. In this embodiment, the value of β is 10° to 80°.

[0036] The specific working process is as follows: The geared motor 1 sequentially drives the coupling 2 and the stirring impeller 5 to rotate. The coal slime slurry enters the inner tank 6 through the feed pipe 704, passing through the shearing blades 507 and radial blades 506, which strongly scrub the surface of the coal slime particles, completing the surface modification treatment. The coal slime slurry continues to move upwards, passing through the lower blade 504 and stator blades 404 before being discharged into the outer tank 7. Flotation reagents and air enter the upper blade 502 through the funnel 407, reagent pipe 406, and straight pipe 402. After being crushed and dispersed by the upper blade 502, they are discharged into the outer tank 6 through the stator blades 404. After the flotation reagents and coal slime slurry are fully mixed, they enter the flotation process stage through the discharge pipe 706.

[0037] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A coal slime buffer tank with surface modification function, characterized in that, Includes an outer barrel (7), and the inner barrel (6) is axially fixedly connected from top to bottom inside the outer barrel (7). The top of the outer barrel (7) is fixedly connected to a geared motor (1) through a frame (3). The output end of the geared motor (1) is coaxially connected to a stirring impeller (5) through a coupling (2). The stirring impeller (5) is provided with two-stage scrubbing impellers and is located in the sleeved stator frame (4) and the inner barrel (6) respectively.

2. The coal slime buffer tank with surface modification function according to claim 1, characterized in that, The stirring impeller (5) includes a stirring shaft (501), and the stirring shaft (501) is provided with an upper blade (502), a conical ring (503), a lower blade (504), a circular ring plate (505), a radial blade (506), and a tangential blade (507) from top to bottom. The upper blade (502), the conical ring (503), the lower blade (504), and the circular ring plate (505) are all located in the sleeve stator frame (4), and the radial blade (506) and the tangential blade (507) are all located in the inner barrel (6).

3. The coal slime buffer tank with surface modification function according to claim 2, characterized in that, Both the radial blade (506) and the tangential blade (507) are cuboids. The radial blade (506) is arranged in the radial direction of the stirring shaft (501), and the angle between the tangential blade (507) and the center line of the stirring shaft (501) is 10° to 80°.

4. The coal slime buffer tank with surface modification function according to claim 2, characterized in that, The outer barrel (7) includes a straight barrel section (701) and a conical barrel section (702). The upper part of the straight barrel section (701) is provided with a first supporting steel frame (703) and the middle part is provided with a second supporting steel frame (705). The side wall of the straight barrel section (701) located above the second supporting steel frame (705) is provided with a feed pipe (704). The lower part of the conical barrel section (702) is provided with a discharge pipe (706). Both the feed pipe (704) and the discharge pipe (706) are provided with flanges. The first supporting steel frame (703) has bolt holes and is connected to the frame (3) by bolts.

5. The coal slime buffer tank with surface modification function according to claim 4, characterized in that, The inner barrel (6) includes a conical section (601), a straight section (602), a feed pipe (603), and a connecting plate (604). The straight section (602) has a feed pipe (603) on its side wall. The feed pipe (603) and the feed pipe (704) have the same number, the same diameter, and are coaxial. The connecting plate (604) has bolt holes and is connected to the second support steel frame (705) by bolts. There is a gap of 0.1mm to 50mm between the feed pipe (603) and the feed pipe (704).

6. The coal slime buffer tank with surface modification function according to claim 4, characterized in that, The sleeve stator frame (4) is provided with a connecting flange (401), a straight pipe (402), a tapered pipe (403), a stator blade (404), and an annular plate (405) from top to bottom. The connecting flange (401) is provided with bolt holes and is connected to the first support steel frame (703) by bolts. The straight pipe (402) has a chemical tube (406) with a funnel (407) at one end on its side wall. The angle between the center line of the stator blade (404) and the center line of the annular plate (405) is 5° to 60°.

7. The coal slime buffer tank with surface modification function according to claim 6, characterized in that, The angle between the upper edge line (50201) of the upper blade (502) and the center line of the stirring shaft (501) is the same as the cone angle of the cone tube (403), and the angle between the lower edge line (50202) of the upper blade (502) and the center line of the stirring shaft (501) is the same as the cone angle of the conical ring (503).

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