Rotary dryer for mine

Abstract

The utility model discloses a rotary dryer for mines, which belongs to the field of mineral drying and comprises a feed end and a discharge end, a rotary drum is rotatably arranged between the feed end and the discharge end, the feed end is communicated with a combustion chamber, a feed hopper and a guide plate are respectively arranged at the top and the middle of the feed end, and a discharge pipe is communicated with the discharge end. A circulation cavity is fixedly formed in the side wall of the discharging pipe, one end of the circulation cavity is communicated with the discharging end, the other end of the circulation cavity is communicated with a dust remover, and the dust remover is communicated with an induced draft fan. By means of the induced draft fan, hot air generated by the combustion chamber can be guided to the discharging end, the hot air makes contact with mineral aggregate in the rotary drum in the process, most of the mineral aggregate is dried, the hot air dried once continues to flow into the circulation cavity to heat the circulation cavity, heat is transmitted into the discharging pipe, drying can be repeated once again when the mineral aggregate is discharged, and therefore the mineral aggregate can be dried more conveniently. And the drying effect is better, and waste heat of hot air is recycled.

Description

Technical Field

[0001] The utility model relates to the field of mineral drying, in particular to a rotary drum dryer for mines. Background Art

[0002] In the mining process, materials are dried, such as slag, limestone, coal powder, clay and other materials. Generally, these materials are dried more using rotary drum dryers. The working principle is to make the materials evenly distributed and dispersed in the drum through the rotating drum, and fully contact with the hot air to accelerate the drying heat and mass transfer process. During the drying process, the materials are dried under the action of the hot air flow.

[0003] In traditional rotary drum dryers, materials only come into contact with hot air in the drum, which cannot ensure that all materials can be dried thoroughly. If the drying is not thorough, the returned materials may need to be dried again. In addition, the dried hot air is directly sucked into the dust collector without heat recovery, which is wasteful. Therefore, a device is needed that can recover the used hot air with residual heat and dry the materials that are not sure whether they are completely dried again. Utility Model Content

[0004] In order to solve the technical problems that in the above-mentioned traditional rotary drum dryer, the material is only in contact with the hot air in the drum, which cannot ensure that all the material can be dried thoroughly, if the drying is not thorough, the returned material may be dried again, and the dried hot air is directly sucked into the dust collector without recovering the heat of the dried hot air, which is relatively wasteful, the utility model provides a rotary drum dryer for mining.

[0005] A rotary drum dryer for mining comprises a feed end and a discharge end, a rotary drum being rotatably arranged between the feed end and the discharge end, the feed end being communicated with a combustion chamber, a feed hopper and a guide plate being respectively arranged at the top and the middle of the feed end, a discharge pipe being communicated with the discharge end, a circulation cavity being fixedly arranged on the side wall of the discharge pipe, one end of the circulation cavity being communicated with the discharge end, and the other end being communicated with a dust collector, and the dust collector being communicated with a draft fan.

[0006] Furthermore, the feed end and the discharge end are fixed to the ground through a support frame, one end of the feed end is fixedly connected to the combustion chamber, and the other end is rotatably connected to the inclined upper end of the rotating drum, and one end of the discharge end is fixedly connected to the discharge pipe, and the other end is rotatably connected to the inclined lower end of the rotating drum.

[0007] Furthermore, the feed hopper is fixedly arranged through the top wall of the feed end, and the guide plate is inclined. Its inclined upper end is fixedly arranged on the side wall of the feed end, and the inclined lower end extends into the interior of the drum, which can guide the material into the interior of the drum.

[0008] Furthermore, a large gear is fixedly provided on the outer wall of the rotating drum, and rolling rings are fixedly provided on the outer wall of the rotating drum on both sides of the large gear. Three support blocks are fixedly provided on the ground respectively. A servo motor is provided on the side wall of the support block in the middle through a mounting frame. A small gear is fixedly provided on the output shaft of the servo motor. The large gear and the small gear are meshed with each other. Support wheels are provided on the top of the other two support blocks, which can support the two rolling rings respectively.

[0009] Furthermore, a star-shaped unloading valve is fixedly provided at the inclined lower end of the discharge pipe, and a discharge dragon is rotatably provided inside the discharge pipe. The two ends of the flow cavity are respectively connected to the discharge end and the dust collector through the conveying pipe, and the top of the dust collector is also connected to the induced draft fan through the conveying pipe. The dust collector is a cyclone dust collector, and a receiving frame is movably placed at the inclined lower end of the discharge pipe.

[0010] Compared with the prior art, the beneficial effect of the present invention is that the hot air generated in the combustion chamber can be led to the discharge end by using the induced draft fan, and in the process it comes into contact with the ore in the rotating drum, drying most of the ore. The hot air that has been dried once continues to flow into the circulation cavity, heating the circulation cavity, and the heat is transferred to the discharge pipe. The drying can be repeated when the ore is discharged, making the drying effect better, and the waste heat of the hot air is recycled. The recycled air is dust-removed by the dust collector and then discharged to the outside from the exhaust port of the induced draft fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a schematic top view of part of the structure of the utility model.

[0013] In the figure: 1. Feed end; 2. Discharge end; 3. Rotating drum; 4. Combustion chamber; 5. Feed hopper; 6. Guide plate; 7. Discharge pipe; 8. Circulation chamber; 9. Dust collector; 10. Induced draft fan; 11. Large gear; 12. Roller; 13. Support block; 14. Servo motor; 15. Small gear; 16. Support roller; 17. Discharge dragon; 18. Conveying pipe; 19. Star-shaped unloading valve; 20. Receiving frame. DETAILED DESCRIPTION

[0014] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0015] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate for the embodiments of the present invention described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0016] In this utility model, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the utility model and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0017] Furthermore, some of the above terms may be used to express other meanings besides orientation or positional relationships. For example, the term "on" may also be used in certain circumstances to indicate a dependency or connection. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances. Furthermore, the term "plurality" should mean two or more.

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Figure 1-Figure 2 The present invention is described in detail with reference to the embodiments.

[0019] A rotary drum dryer for mining comprises a feed end 1 and a discharge end 2, both of which are fixed on the ground by a support frame, a rotary drum 3 is rotatably arranged between the feed end 1 and the discharge end 2, the feed end 1 is communicated with a combustion chamber 4, one end of the feed end 1 is fixedly connected to the combustion chamber 4, and the other end is rotatably connected to the inclined upper end of the rotary drum 3, a discharge pipe 7 is provided in communication with the discharge end 2, one end of the discharge end 2 is fixedly connected to the discharge pipe 7, and the other end is rotatably connected to the inclined lower end of the rotary drum 3.

[0020] The combustion chamber 4 can generate hot air through combustion, and the hot air passes through the feed end 1 and moves along the inside of the drum 3 toward the discharge end 2. The drum 3 is an inclined structure as a whole, and a number of lifting plates are conventionally arranged inside it to facilitate the internal mineral material to move from the feed end 1 to the discharge end 2, and finally gather in the discharge pipe 7 for discharge.

[0021] A feed hopper 5 and a guide plate 6 are respectively provided at the top and the middle of the feed end 1. The feed hopper 5 is fixedly provided through the top wall of the feed end 1, and the guide plate 6 is inclined. Its inclined upper end is fixedly provided on the side wall of the feed end 1, and the inclined lower end extends into the interior of the rotating drum 3, which can guide the material into the interior of the rotating drum. The mineral material falls from the feed hopper 5 onto the guide plate 6 below, and moves to the interior of the rotating drum 3 along the inclined direction of the guide plate 6. Inside the rotating drum 3, with the help of centrifugal force and gravity during rotation, it slowly moves towards the discharge end 2 driven by the copying plate.

[0022] A large gear 11 is also fixedly provided on the outer wall of the rotating drum 3, and rolling rings 12 are fixedly provided on the outer wall of the rotating drum 3 on both sides of the large gear 11. Three support blocks 13 are fixedly provided on the ground. A servo motor 14 is provided on the side wall of the support block 13 in the middle through a mounting frame. A small gear 15 is fixedly provided on the output shaft of the servo motor 14. The large gear 11 and the small gear 15 are meshed and connected with each other. Support wheels 16 are provided on the top of the other two support blocks 13, which can support the two rolling rings 12 respectively.

[0023] When in use, the servo motor 14 is started to drive the small gear 15 to rotate, and then drive the large gear 11 to rotate synchronously, that is, it can drive the rotating drum 3 to rotate. During the rotation process, the rotating drum 3 drives the roller 12 to move on the supporting wheel 16, thereby supporting the rotating drum 3.

[0024] A star-shaped discharge valve 19 is fixedly provided at the inclined lower end of the discharge pipe 7, and a discharge dragon 17 is rotatably provided inside the discharge pipe 7. A circulation chamber 8 is fixedly provided on the side wall of the discharge pipe 7. One end of the circulation chamber 8 is communicated with the discharge end 2, and the other end is communicated with the dust collector 9. The dust collector 9 is communicated with the induced draft fan 10. The two ends of the circulation chamber 8 are respectively communicated with the discharge end 2 and the dust collector 9 through the conveying pipe 18. The top of the dust collector 9 is also communicated with the induced draft fan 10 through the conveying pipe 18. The dust collector 9 is a cyclone dust collector. A material receiving frame 20 is movably placed at the inclined lower end of the discharge pipe 7.

[0025] By starting the induced draft fan 10, the air inside the drum 3 can be guided to the inside of the circulation chamber 8 through the conveying pipe 18, and then the air will make a circle inside the circulation chamber 8 and then be conveyed to the inside of the dust collector 9 through another conveying pipe 18 for dust removal. The air with residual heat will heat the inside of the circulation chamber 8, that is, the inside of the discharge pipe 7 can be heated and dried again through heat exchange, and the mineral materials that have not been thoroughly dried inside the drum 3 can be repeatedly dried to improve the quality. After the repeated drying is completed, the star-shaped discharge valve 19 is opened, and the mineral materials are driven by the discharge dragon 17 to fall from the discharge pipe 7 into the receiving frame 20 for collection. The air that has been dust-removed in the dust collector 9 is conveyed to the induced draft fan 10 along the conveying pipe 18 and discharged to the outside through its air outlet.

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rotary drum dryer for mining, comprising a feed end (1) and a discharge end (2), characterized in that: A rotating drum (3) is rotatably arranged between the feed end (1) and the discharge end (2); the feed end (1) is communicated with the combustion chamber (4); a feed hopper (5) and a guide plate (6) are respectively arranged at the top and the middle of the feed end (1); a discharge pipe (7) is communicated with the discharge end (2); a circulation cavity (8) is fixedly arranged on the side wall of the discharge pipe (7); one end of the circulation cavity (8) is communicated with the discharge end (2), and the other end is communicated with the dust collector (9); and the dust collector (9) is communicated with the induced draft fan (10).

2. The rotary drum dryer for mining according to claim 1, characterized in that: The feed end (1) and the discharge end (2) are both fixedly arranged on the ground via a support frame; one end of the feed end (1) is fixedly connected to the combustion chamber (4), and the other end is rotatably connected to the inclined upper end of the rotating drum (3); one end of the discharge end (2) is fixedly connected to the discharge pipe (7), and the other end is rotatably connected to the inclined lower end of the rotating drum (3).

3. The rotary drum dryer for mining according to claim 2, characterized in that: The feed hopper (5) is fixedly arranged through the top wall of the feed end (1), and the guide plate (6) is inclined. Its inclined upper end is fixedly arranged on the side wall of the feed end (1), and its inclined lower end extends into the interior of the rotating drum (3), so as to guide the material into the interior of the rotating drum.

4. The rotary drum dryer for mining according to claim 3, characterized in that: A large gear (11) is fixedly provided on the outer wall of the rotating drum (3), and rolling rings (12) are fixedly provided on the outer walls of the rotating drum (3) on both sides of the large gear (11). Three support blocks (13) are fixedly provided on the ground respectively. A servo motor (14) is provided on the side wall of the support block (13) in the middle through a mounting frame. A small gear (15) is fixedly provided on the output shaft of the servo motor (14). The large gear (11) and the small gear (15) are meshed and connected with each other. Support wheels (16) are provided on the tops of the other two support blocks (13) to respectively support the two rolling rings (12).

5. The rotary drum dryer for mining according to claim 4, characterized in that: A star-shaped discharge valve (19) is fixedly provided at the inclined lower end of the discharge pipe (7), a discharge dragon (17) is rotatably provided inside the discharge pipe (7), the two ends of the circulation cavity (8) are respectively connected to the discharge end (2) and the dust collector (9) through the conveying pipe (18), the top end of the dust collector (9) is also connected to the induced draft fan (10) through the conveying pipe (18), the dust collector (9) is a cyclone dust collector, and a receiving frame (20) is movably placed at the inclined lower end of the discharge pipe (7).

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