Rotary hearth furnace distributing device with material flow adjusting function

Abstract

The utility model discloses a rotary hearth furnace material distribution device with a material flow adjusting function, which belongs to the technical field of vibration material distribution and comprises a material distribution groove body, a screening bottom plate is arranged at the groove bottom of the front end of the material distribution groove body, and a distribution assembly is arranged at the position, located at the tail end of the screening bottom plate, of the material distribution groove body in the width direction of the screening bottom plate. The distribution component divides the distribution groove body into a plurality of guide chutes along the width direction; a baffle plate is arranged at the rear end of the guide chute of the distribution tank body, and a discharge port is formed in the bottom of the distribution tank body at the front side of the baffle plate; wherein the distributing groove body is located at the rear end of the screening bottom plate and is provided with a distributing plate in the width direction, and a height-adjustable material passing gap is formed between the bottom edge of the distributing plate and the screening bottom plate. The rotary hearth furnace is simple in structure and convenient to install, the uniformity of material flow in the furnace can be greatly improved, and the metallized pellet roasting effect and the production efficiency of the rotary hearth furnace are improved.

Description

Technical Field

[0001] The utility model relates to a vibrating material distribution device, in particular to a rotary hearth furnace material distribution device with a material flow regulating function. Background Art

[0002] The rotary hearth furnace is currently the mainstream technical route for processing metallurgical dust and sludge. After the metallurgical dust and sludge are mixed and formed according to the corresponding raw material structure, the pellets made of metallurgical dust and sludge are roasted at high temperature in a rotary hearth furnace to produce metallized pellet products. The metallized pellets can be used as raw materials in the steelmaking process, ultimately realizing the resource utilization of metallurgical dust and sludge.

[0003] Most rotary furnaces have circular furnaces, and metallurgical dust and sludge pellets are spread flat on the furnace bottom. After the furnace bottom rotates for one circle, the pellets are roasted and discharged out of the furnace. The vibrating distributor equipped with the rotary furnace evenly distributes the metallurgical dust and sludge pellets on the bottom of the rotary furnace. The vibrating distributor has a certain inclination. As the distributor frame vibrates, the material flow moves slowly and passes through the screening section, distributor, guide chute, and discharge port, and finally falls into the bottom of the rotary furnace. The distributor can generally adjust the distributor to reasonably distribute the material flow between the guide chutes to achieve uniform distribution in the furnace. However, in the actual production process, the adjustment of the distributor alone cannot guarantee the uniformity of the material flow distribution. First, during the flow of the material through the vibrating feeder, the pellet flow rate in the middle area of ​​the width direction of the vibrating feeder is large, while the flow rate in the two side areas is small, which will result in a small amount of feed in the inner and outer rings of the annular furnace bottom of the rotary hearth furnace, thicker center feed, and poor feed uniformity in the width direction of the furnace bottom, which ultimately affects the quality of the pellet products. In addition, the instantaneous fluctuation of the material flow rate in the actual production process is large, and the feeder cannot stabilize the material flow, resulting in poor feed uniformity in the circumferential direction of the rotary hearth furnace bottom. Utility Model Content

[0004] The technical problem solved by the utility model is as follows: In view of the problem of poor uniformity of the material distribution machine in the prior art during the material distribution process, the utility model provides a rotary hearth furnace material distribution device with a material flow adjustment function, which has a simple structure and is easy to install. It can greatly improve the uniformity of the material flow in the furnace, thereby improving the roasting effect of metallized pellets and the production efficiency of the rotary hearth furnace.

[0005] Technical solution: The utility model describes a rotary hearth furnace charging device with a material flow regulating function, the charging device comprising a charging trough body, a screening bottom plate is arranged at the bottom of the front end of the charging trough body, and a distribution component is arranged at the end of the screening bottom plate along its width direction of the charging trough body, and the distribution component divides the charging trough body into a plurality of material guide chutes along the width direction; a baffle plate is arranged at the rear end of the charging trough body, and a discharge port is provided at the bottom of the charging trough body in front of the baffle plate; wherein, the charging trough body is provided with a charging plate at the rear end of the screening bottom plate along its width direction, and a height-adjustable material passing gap is provided between the bottom edge of the charging plate and the screening bottom plate.

[0006] Preferably, the distribution assembly includes a supporting transverse plate arranged along the width direction of the distribution trough body, and a plurality of supporting rods are arranged at equal intervals on the supporting transverse plate. The lower end of each support rod is connected to a guide plate arranged along the length direction of the distribution trough body, and adjacent guide plates form a material guide chute.

[0007] Preferably, the lengths of the plurality of guide plates are gradually increased along the width direction of the material distribution trough to form a distribution component end structure with an inclined linear distribution.

[0008] Preferably, the material discharge port and the material baffle plate are adapted to the inclined linear distribution structure at the end of the guide plate.

[0009] Preferably, the material distribution plate includes a pointed arch baffle symmetrically arranged along the center line, and a plurality of mounting blocks are arranged at equal intervals at both ends of the pointed arch baffle along its height direction; a plurality of mounting frames are arranged on the inner side of the side wall of the material distribution trough along its height direction corresponding to the mounting blocks.

[0010] Preferably, the screening bottom plate and the side walls of the distribution trough are inclined downward from front to back, the trough bottom plate of the distribution trough located at the rear end of the screening bottom plate is inclined downward from front to back, and the inclination angle of the trough bottom plate is smaller than the inclination angle of the screening bottom plate.

[0011] Preferably, a reinforcing rod is fixedly connected between the side walls at the end of the material distribution trough.

[0012] Preferably, four groups of mounting racks are correspondingly arranged on the outer walls of the trough body at both ends of the material distributing trough body, and a vibration spring is arranged at the bottom end of each mounting rack.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] 1. The utility model has a simple structure and is easy to install, which can greatly improve the uniformity of the material flow in the furnace, improve the roasting effect of metallized pellets and the production efficiency of the rotary hearth furnace;

[0015] 2. The distribution plate is designed in a pointed arch shape. The distribution plate is installed above the screening bottom plate. The distribution plate is installed in the distribution trough body by inserting the installation plug of the distribution plate into the installation frame of the distribution trough body. By adjusting the position of the installation plug of the distribution plate and the installation frame, the gap height between the distribution plate and the screening bottom plate can be adjusted to control the flow rate of the material flow. When the material flow rate is instantaneously large, the flow rate of the material flow through the lower part of the distribution plate remains stable due to the height of the material gap, and the material level on the material side of the distribution plate becomes higher in a short time, and the distribution plate plays a role in buffering the material flow; the distribution plate adopts a pointed arch structure. Generally, the material flow rate in the middle area of ​​the vibration distribution machine in the width direction is large. Due to the height of the material gap between the distribution plate and the screening bottom plate, the material flow in the middle area will be distributed to the two sides of the distribution chute by the pointed arch distribution plate, so that the distribution uniformity in the width direction of the distribution trough body is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the structure of the rotary hearth furnace charging device of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the middle material distribution device;

[0018] Figure 3 for Figure 2 Structural cross-section view of the middle material distribution device at AA;

[0019] Figure 4 for Figure 2 Structural cross-section view of the middle material distribution device at BB;

[0020] Figure 5 for Figure 2 Schematic diagram of the three-dimensional structure of the middle fabric plate;

[0021] Figure 6 for Figure 2 The enlarged schematic diagram of the structure at E in the middle;

[0022] Figure 7 for Figure 4 Enlarged schematic diagram of the structure at F in the middle.

[0023] Figure numerals: 1. material distribution trough; 2. mounting frame; 3. screening bottom plate; 4. distribution assembly; 41. supporting cross plate; 42. supporting rod; 43. guide plate; 5. material guide chute; 6. material distribution plate; 61. pointed arch baffle; 62. mounting plug; 7. material discharge port; 8. vibration spring; 9. reinforcing rod; 10. material baffle plate; 11. trough bottom plate; 12. mounting frame. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present utility model clearer, the following will be combined with the attached Figures 1 to 7 The technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0025] like Figures 1 to 4 As shown, a rotary hearth furnace charging device with a material flow regulating function is provided in an embodiment of the utility model, the charging device comprises a charging trough body 1, a screening bottom plate 3 is arranged at the bottom of the front end of the charging trough body 1, the screening bottom plate 3 and the side wall of the charging trough body 1 are arranged to be inclined downward from front to back, a trough bottom plate 11 of the charging trough body 1 located at the rear end of the screening bottom plate 3 is arranged to be inclined downward from front to back, and the inclination angle of the trough bottom plate 11 is smaller than the inclination angle of the screening bottom plate 3, so that the metallurgical dust and mud pellets can flow smoothly along the screening bottom plate 3 and the trough bottom plate 11 to the discharge port 7 and be discharged into the rotary hearth furnace. Four groups of mounting frames 2 are correspondingly arranged on the outer walls of the trough body at both ends of the material distributing trough body 1, and a vibration spring 8 is arranged at the bottom end of each mounting frame 2. The material distributing trough body 1 is mounted on the vibration driving device through the mounting frames 2 and the vibration springs 8, and the vibration driving device transmits power to the material distributing trough body 1 through the vibration springs 8; wherein, the vibration driving device is a conventional technical means in the prior art, and those skilled in the art are aware of its implementation principle, which will not be elaborated here.

[0026] like Figures 1 to 3 As shown, the material distribution trough 1 is located at the end of the screening bottom plate 3 and is provided with a distribution assembly 4 along its width direction. The distribution assembly 4 includes a supporting transverse plate 41 arranged along the width direction of the material distribution trough 1. A plurality of supporting rods 42 are arranged at equal intervals on the supporting transverse plate 41. The lower end of each supporting rod 42 is connected to a guide plate 43 arranged along the length direction of the material distribution trough 1. The adjacent guide plates 43 form a material guide chute 5. The distribution assembly 4 divides the material distribution trough 1 into a plurality of material guide chutes 5 along the width direction. A reinforcing rod 9 is fixedly connected between the side walls at the end of the material distribution trough 1. The reinforcing rod 9 cooperates with the supporting transverse plate 41 to reinforce the material distribution trough 1. A baffle plate 10 is provided at the rear end of the material guide chute 5 of the material distribution trough 1, and a material discharge port 7 is opened at the bottom of the trough of the material distribution trough 1 in front of the baffle plate 10. The baffle plate 10 can block the metallurgical dust and mud pellets flowing to the material discharge port 7, so that the metallurgical dust and mud pellets can evenly enter the rotary hearth furnace through the material discharge port 7.

[0027] In a preferred embodiment, if Figure 1~2As shown, the lengths of the multiple guide plates 43 gradually increase along the width direction of the distribution trough 1 to form an end structure of the distribution component 4 with an inclined linear distribution, and the discharge port 7 and the baffle plate 10 are adapted to the inclined linear distribution structure at the end of the guide plate 43. This arrangement of the distribution component 4, the baffle plate 10 and the discharge port 7 structure can effectively reduce the accumulation of metallurgical dust and sludge pellets at the discharge port 7.

[0028] like Figure 1~2 and Figures 5 to 7 As shown, the material distribution trough body 1 is located at the rear end of the screening bottom plate 3 and is provided with a material distribution plate 6 along its width direction. The material distribution plate 6 includes a pointed arch baffle 61 symmetrically arranged along the midline, and a plurality of mounting plugs 62 are arranged at equal intervals at both ends of the pointed arch baffle 61 along its height direction; a plurality of mounting frames 12 are arranged on the inner side of the side wall of the material distribution trough body 1 along its height direction corresponding to the mounting plugs 62, and a height-adjustable material passing gap is provided between the bottom edge of the material distribution plate 6 and the screening bottom plate 3. Specifically, if the material passing gap between the material distribution plate 6 and the screening bottom plate 3 needs to be increased, the material distribution plate 6 is lifted upward and the mounting plugs 62 arranged at both ends are correspondingly inserted into the mounting frame 12 arranged on the side wall of the material distribution trough body 1, so that the position adjustment of the material distribution plate 6 can be conveniently realized. The distribution plate 6 is designed in a pointed arch shape. The distribution plate 6 is installed above the screening bottom plate 3. The distribution plate 6 is installed in the distribution trough 1 by inserting the installation plug 62 of the distribution plate into the installation frame 12 of the distribution trough 1. By adjusting the position of the installation plug 62 of the distribution plate and the installation frame 12, the gap height between the distribution plate and the screening bottom plate can be adjusted to control the flow rate of the material flow. In the actual production process, when the material flow rate is instantaneously large, the flow rate of the material flow through the lower part of the distribution plate remains stable due to the height of the material gap, and the material level on the incoming side of the distribution plate becomes higher in a short time, and the distribution plate 6 plays a role in buffering the material flow. The distribution plate 6 adopts a pointed arch structure. Generally, the material flow rate in the middle area of ​​the vibration distribution machine in the width direction is large. Due to the height of the material gap between the distribution plate and the screening bottom plate, the material flow in the middle area will be distributed to the two side areas of the distribution chute by the pointed arch distribution plate, so that the distribution uniformity in the width direction of the distribution trough is improved.

[0029] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A rotary hearth furnace charging device with a material flow regulating function, characterized in that: The material distribution device comprises a material distribution trough (1), wherein a screening bottom plate (3) is arranged at the bottom of the front end of the material distribution trough (1), and a distribution component (4) is arranged at the end of the material distribution trough (1) along the width direction thereof, wherein the distribution component (4) divides the material distribution trough (1) into a plurality of material guide chutes (5) along the width direction thereof; a material baffle plate (10) is arranged at the rear end of the material guide chutes (5) of the material distribution trough (1), and a material discharge port (7) is provided at the bottom of the material distribution trough (1) in front of the material baffle plate (10); wherein a material distribution plate (6) is arranged at the rear end of the material distribution trough (1) along the width direction thereof, and a height-adjustable material passing gap is provided between the bottom edge of the material distribution plate (6) and the screening bottom plate (3).

2. The rotary hearth furnace charging device with material flow regulating function according to claim 1, characterized in that: The distribution assembly (4) comprises a supporting transverse plate (41) arranged along the width direction of the material distribution trough body (1), a plurality of supporting rods (42) are arranged at equal intervals on the supporting transverse plate (41), the lower end of each supporting rod (42) is connected to a guide plate (43) arranged along the length direction of the material distribution trough body (1), and the adjacent guide plates (43) form a material guide chute (5).

3. The rotary hearth furnace charging device with material flow regulating function according to claim 2, characterized in that: The lengths of the plurality of guide plates (43) are gradually increased along the width direction of the material distribution trough body (1) to form an end structure of the distribution assembly (4) that is distributed in an inclined linear manner.

4. The rotary hearth furnace charging device with material flow regulating function according to claim 3, characterized in that: The material discharge port (7) and the material baffle plate (10) are adapted to the inclined linear distribution structure at the end of the guide plate (43).

5. The rotary hearth furnace charging device with material flow regulating function according to any one of claims 1 to 4, characterized in that: The material distribution plate (6) comprises a pointed arch baffle (61) symmetrically arranged along the midline, and a plurality of mounting plug blocks (62) are arranged at equal intervals at both ends of the pointed arch baffle (61) along its height direction; and a plurality of mounting frames (12) are arranged on the inner side of the side wall of the material distribution trough body (1) along its height direction corresponding to the mounting plug blocks (62).

6. The rotary hearth furnace charging device with material flow regulating function according to claim 5, characterized in that: The screening bottom plate (3) and the side wall of the material distribution trough body (1) are arranged to be inclined downward from front to back, and the trough bottom plate (11) of the material distribution trough body (1) located at the rear end of the screening bottom plate (3) is arranged to be inclined downward from front to back, and the inclination angle of the trough bottom plate (11) is smaller than the inclination angle of the screening bottom plate (3).

7. The rotary hearth furnace charging device with material flow regulating function according to claim 5, characterized in that: A reinforcing rod (9) is fixedly connected between the side walls at the end of the material distributing trough body (1).

8. The rotary hearth furnace charging device with material flow regulating function according to claim 5, characterized in that: Four groups of mounting frames (2) are correspondingly arranged on the outer walls of the two ends of the material distributing trough body (1), and a vibration spring (8) is arranged at the bottom end of each mounting frame (2).

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