Pelletizing and drying device for pellet preparation

Abstract

The pelletizing and drying device comprises a bottom plate, one end of the upper surface of the bottom plate is fixedly connected with a disc pelletizer, the rear side face of the disc pelletizer is fixedly connected with a fixing barrel used for receiving materials through a supporting frame, the upper portion of an inner cavity of the fixing barrel is rotationally connected with a plurality of first rotating rollers, and the upper portion of the inner cavity of the fixing barrel is provided with a plurality of second rotating rollers. And the multiple first rotating rollers are obliquely and downwards arranged from the rear side to the front side of the fixed cylinder. The utility model relates to the technical field of pellet preparation. According to the pelletizing and drying device for pellet preparation, pig iron balls with qualified specifications and smaller specifications fall down through gaps among the multiple first rotating rollers, the pig iron balls with qualified specifications are discharged through a discharging pipe through inclined guiding of the second rotating rollers, and the pig iron balls with smaller specifications fall down through gaps among the multiple second rotating rollers; and the pig iron balls with qualified specifications enter the interior of the drying box through the interior of the discharge pipe to be dried.

Description

Technical Field

[0001] This utility model relates to the field of pellet preparation technology, specifically to a pelletizing and drying device for pellet preparation. Background Technology

[0002] Iron pellet preparation is an important step in the iron and steel smelting industry. It involves mixing finely ground iron concentrate powder or other iron-containing powders with a small amount of additives, and then producing spherical iron-containing raw materials with certain strength and metallurgical properties through a series of process steps.

[0003] In the existing technology, during the pellet preparation process, a granulation mechanism is needed to prepare iron powder into pig iron pellets, and then the pig iron pellets are dried. However, the specifications of the pig iron pellets after direct granulation cannot be uniform, and it is easy for large or small pig iron pellets to enter the subsequent drying steps, which is not conducive to subsequent ironmaking processing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a granulation and drying device for pellet preparation, which solves the problem that the specifications of granulated pig iron pellets cannot be uniform, and that large or small pig iron pellets are prone to enter the subsequent drying steps.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a granulation and drying device for pellet preparation, comprising a base plate, a disc granulator fixedly connected to one end of the upper surface of the base plate, a fixed cylinder for receiving material fixedly connected to the rear side of the disc granulator through a support frame, a plurality of first rotating rollers rotatably connected to the upper part of the inner cavity of the fixed cylinder, the plurality of first rotating rollers being arranged inclined downward along the rear side to the front side of the fixed cylinder, and a discharge port being opened on the upper part of the front side of the fixed cylinder;

[0006] The lower part of the inner cavity of the fixed cylinder is rotatably connected to several second rotating rollers. The multiple second rotating rollers are arranged obliquely downward along one end of the fixed cylinder to the other end. The distance between the multiple first rotating rollers is greater than the distance between the multiple second rotating rollers. The lower part of the other end face of the fixed cylinder is connected to a discharge pipe. The other end of the upper surface of the bottom plate is fixedly connected to a drying box by several support rods. The other end of the discharge pipe extends to the middle of the inner cavity of the drying box. A drying mechanism is provided inside the drying box.

[0007] Furthermore, a fixed seat located below the fixed cylinder is fixedly connected to the top of the base plate, and a conveyor belt is provided inside the fixed seat.

[0008] Furthermore, the drying mechanism includes a distribution plate and a conveyor belt. The conveyor belt is disposed at the bottom of the inner cavity of the drying chamber, the distribution plate is fixedly connected to the top of the inner cavity of the drying chamber, a fixing box is disposed on the upper surface of the distribution plate, a plurality of heating wires are disposed inside the fixing box, and a fan mechanism for injecting airflow into the fixing box is disposed on the top of the drying chamber.

[0009] Furthermore, the fan mechanism includes a protective shell, which is fixedly connected to the top of the drying chamber. A fan body is fixedly connected inside the protective shell, and the air outlet of the fan body is connected to a connecting pipe. The other end of the connecting pipe is connected to the interior of the fixed box.

[0010] Furthermore, an inspection cover is provided on the surface of the protective shell by means of several screws, and an air inlet is provided on the surface of the inspection cover.

[0011] Furthermore, the surface of the drying oven is provided with an observation window.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: After the disc granulator operates, iron powder can be prepared into pig iron pellets. After the disc granulator continues to work, the pig iron pellets fall into the inside of the fixed cylinder. Larger pig iron pellets are guided by the inclined first rotating roller and discharged through the inside of the discharge port. Pig iron pellets of qualified size and smaller size fall through the gap between multiple first rotating rollers. Pig iron pellets of qualified size are guided by the inclined second rotating roller and discharged through the discharge pipe. Smaller pig iron pellets fall through the gap between multiple second rotating rollers. Pig iron pellets of qualified size enter the inside of the drying chamber through the inside of the discharge pipe for drying treatment, ensuring the quality of the finished pellets after drying, which is beneficial to subsequent ironmaking processing. Attached Figure Description

[0013] Figure 1 This is a front structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the fixed cylinder and the first rotating roller in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the fixed cylinder and the discharge port in this utility model;

[0016] Figure 4 This is a schematic diagram of the drying mechanism in this utility model.

[0017] In the diagram: 1. Base plate; 2. Disc granulator; 3. Support frame; 4. Fixed cylinder; 5. First rotating roller; 6. Discharge port; 7. Second rotating roller; 8. Fixed seat; 9. Conveyor belt; 10. Discharge pipe; 11. Support rod; 12. Drying box; 13. Observation window; 14. Protective shell; 15. Fan body; 16. Diverter plate; 17. Fixed box; 18. Heating wire; 19. Connecting pipe; 20. Conveyor belt; 21. Inspection cover plate; 22. Air inlet window. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution: a pelletizing and drying device for pellet preparation, including a base plate 1, a disc pelletizer 2 fixedly connected to one end of the upper surface of the base plate 1, and a fixed cylinder 4 for receiving materials fixedly connected to the rear side of the disc pelletizer 2 through a support frame 3. The disc pelletizer 2 is prior art and will not be described in detail here.

[0020] Several first rotating rollers 5 are rotatably connected to the upper part of the inner cavity of the fixed cylinder 4. The multiple first rotating rollers 5 are arranged inclined downward along the rear side to the front side of the fixed cylinder 4. A discharge port 6 is opened on the upper part of the front side of the fixed cylinder 4.

[0021] A plurality of second rotating rollers 7 are rotatably connected to the lower part of the inner cavity of the fixed cylinder 4. The plurality of second rotating rollers 7 are arranged inclined downward along one end of the fixed cylinder 4 to the other end. The distance between the plurality of first rotating rollers 5 is greater than the distance between the plurality of second rotating rollers 7. The lower part of the other end face of the fixed cylinder 4 is connected to a discharge pipe 10.

[0022] The other end of the upper surface of the base plate 1 is fixedly connected to the drying chamber 12 by several support rods 11, and the other end of the discharge pipe 10 extends to the middle of the inner cavity of the drying chamber 12. The drying chamber 12 is equipped with a drying mechanism.

[0023] After the disc granulator 2 starts working, it can prepare iron powder into pig iron lumps. After the disc granulator 2 continues to work, the pig iron lumps fall into the inside of the fixed cylinder 4. The larger pig iron lumps are guided by the inclined first rotating roller 5 and discharged through the inside of the discharge port 6. The qualified and smaller pig iron lumps fall through the gap between the multiple first rotating rollers 5.

[0024] Qualified pig iron pellets are discharged through the discharge pipe 10 via the inclined guide of the second rotating roller 7. Smaller pig iron pellets fall through the gaps between multiple second rotating rollers 7. Qualified pig iron pellets enter the drying chamber 12 through the discharge pipe 10 for drying, ensuring the quality of the dried pellets and facilitating subsequent ironmaking processing.

[0025] The top of the base plate 1 is fixedly connected to a fixed seat 8 located below the fixed cylinder 4. The fixed seat 8 is equipped with a conveyor belt 9. The conveyor belt 9 facilitates the transport of the discharged pig iron balls of different sizes, making it convenient for centralized recycling.

[0026] The drying mechanism includes a distribution plate 16 and a conveyor belt 20. The conveyor belt 20 is located at the bottom of the inner cavity of the drying chamber 12, and the distribution plate 16 is fixedly connected to the top of the inner cavity of the drying chamber 12. A fixing box 17 is provided on the upper surface of the distribution plate 16.

[0027] The fixed box 17 is equipped with several heating wires 18, and the top of the drying box 12 is equipped with a fan mechanism that injects airflow into the fixed box 17.

[0028] The fan mechanism includes a protective shell 14, which is fixedly connected to the top of the drying chamber 12. The fan body 15 is fixedly connected inside the protective shell 14. The air outlet of the fan body 15 is connected to a connecting pipe 19, and the other end of the connecting pipe 19 is connected to the inside of the fixed box 17.

[0029] After the blower body 15 starts working, the airflow can be injected into the inner cavity of the fixed box 17 through the guide connection of the connecting pipe 19. After the heating wire 18 starts working, the airflow is heated. After the hot airflow is discharged by the diverter plate 16, the qualified pig iron balls can be collected on the surface of the conveyor belt 20 for drying treatment.

[0030] The surface of the protective shell 14 is provided with an inspection cover 21 by means of several screws. The surface of the inspection cover 21 is provided with an air inlet 22. The surface of the drying oven 12 is provided with an observation window 13.

[0031] After removing the inspection cover 21, the fan mechanism can be inspected and maintained. The air inlet 22 facilitates the entry of external airflow into the inner cavity of the protective shell 14.

[0032] During operation, after the disc granulator 2 starts working, it can prepare iron powder into pig iron briquettes. After the disc granulator 2 continues to work, the pig iron briquettes fall into the inside of the fixed cylinder 4. The larger pig iron briquettes are guided by the inclined first rotating roller 5 and discharged through the inside of the discharge port 6. The qualified and smaller pig iron briquettes fall through the gaps between the multiple first rotating rollers 5. The qualified pig iron briquettes are guided by the inclined second rotating roller 7 and discharged through the discharge pipe 10. The smaller pig iron briquettes fall through the gaps between the multiple second rotating rollers 7. The qualified pig iron briquettes enter the inside of the drying box 12 through the inside of the discharge pipe 10 for drying treatment, ensuring the quality of the finished pellets after drying, which is beneficial to subsequent ironmaking processing.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A granulation and drying apparatus for pellet preparation, comprising a base plate (1), characterized in that: A disc granulator (2) is fixedly connected to one end of the upper surface of the base plate (1). A fixed cylinder (4) for receiving materials is fixedly connected to the rear side of the disc granulator (2) through a support frame (3). Several first rotating rollers (5) are rotatably connected to the upper part of the inner cavity of the fixed cylinder (4). The multiple first rotating rollers (5) are arranged inclined downward along the rear side to the front side of the fixed cylinder (4). A discharge port (6) is opened on the upper part of the front side of the fixed cylinder (4). The lower part of the inner cavity of the fixed cylinder (4) is rotatably connected to a plurality of second rotating rollers (7). The plurality of second rotating rollers (7) are arranged obliquely downward along one end of the fixed cylinder (4) to the other end. The distance between the plurality of first rotating rollers (5) is greater than the distance between the plurality of second rotating rollers (7). The lower part of the other end face of the fixed cylinder (4) is connected to a discharge pipe (10). The other end of the upper surface of the bottom plate (1) is fixedly connected to a drying box (12) by a plurality of support rods (11). The other end of the discharge pipe (10) extends to the middle of the inner cavity of the drying box (12). A drying mechanism is provided inside the drying box (12).

2. The pelletizing and drying apparatus for pellet preparation according to claim 1, characterized in that: The top of the base plate (1) is fixedly connected to a fixed seat (8) located below the fixed cylinder (4), and a conveyor belt (9) is provided inside the fixed seat (8).

3. The pelletizing and drying apparatus for pellet preparation according to claim 1, characterized in that: The drying mechanism includes a distribution plate (16) and a conveyor belt (20). The conveyor belt (20) is located at the bottom of the inner cavity of the drying chamber (12). The distribution plate (16) is fixedly connected to the top of the inner cavity of the drying chamber (12). A fixing box (17) is provided on the upper surface of the distribution plate (16). Several heating wires (18) are provided inside the fixing box (17). A fan mechanism for injecting airflow into the fixing box (17) is provided on the top of the drying chamber (12).

4. The granulation and drying apparatus for pellet preparation according to claim 3, characterized in that: The fan mechanism includes a protective shell (14), which is fixedly connected to the top of the drying box (12). The fan body (15) is fixedly connected inside the protective shell (14). The air outlet of the fan body (15) is connected to a connecting pipe (19), and the other end of the connecting pipe (19) is connected to the inside of the fixed box (17).

5. The pelletizing and drying apparatus for pellet preparation according to claim 4, characterized in that: The surface of the protective shell (14) is provided with an inspection cover (21) by means of several screws, and the surface of the inspection cover (21) is provided with an air inlet (22).

6. The pelletizing and drying apparatus for pellet preparation according to claim 1, characterized in that: The surface of the drying oven (12) is provided with an observation window (13).

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