Pellet rotary kiln outlet cleaning device

Abstract

The utility model discloses a pellet rotary kiln outlet cleaning device, belongs to the technical field of rotary kiln slag treatment, and solves the problems that when a matched hydraulic tool is used for close-range cleaning, a hydraulic pipeline is prone to pipe explosion in a high-temperature environment, and safety accidents such as fire disasters are caused. The pellet rotary kiln outlet cleaning device comprises a hinged base and an excavator, two connecting plates are arranged on the hinged base, the two connecting plates are symmetrically distributed on the two sides of the hinged base about the central axis of the hinged base, arc-shaped holes are formed in the connecting plates, and the excavator is arranged in the arc-shaped holes. The hinged base is connected with a suspension arm of the excavator through a bolt penetrating through the arc-shaped hole, the bottom of the hinged base is detachably connected with a rake rod base, a rake rod is arranged on the rake rod base, and rake teeth are arranged at the other end of the rake rod. The pellet rotary kiln outlet cleaning device can avoid safety accidents such as fire disasters and effectively improve cleaning efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln slag treatment, and more specifically, to a cleaning device for the outlet of a pelletizing rotary kiln. Background Art

[0002] Most domestic pellet production adopts the chain-rotary-ring production process. During the roasting process of pellets, scale will form on the inner wall of the rotary kiln. In the initial stage of scale formation, it has little impact on the normal production of the rotary kiln. However, as the thickness of the scale gradually increases, the formed scale will cause the cross-sectional area inside the rotary kiln to shrink, block the material grid inside the rotary kiln, and the air flow and material flow directions are blocked by the scale, affecting the roasting effect of pellets, resulting in a sharp decline in the output and quality of pellets, and the equipment is severely overloaded. To ensure the normal production of the rotary kiln, it is necessary to regularly clean the scale generated inside the rotary kiln.

[0003] In existing methods, most cleaning methods are to use supporting hydraulic tools for close-range operation. However, when dealing with large pieces of scale at the outlet of the rotary kiln, the kiln door needs to be opened, which will cause the surrounding environment temperature to rise whether during production or shutdown. In a high-temperature environment, the protection requirements for hydraulic pipelines and oil cylinders are extremely high. If a pipe burst occurs, the hydraulic oil splashes onto the high-temperature large pieces of scale, and it is extremely easy to cause a fire and result in safety accidents. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a cleaning device for the outlet of a pelletizing rotary kiln aiming at the above deficiencies of the prior art, which has a simple structure, can avoid safety accidents such as fires, and effectively improves the cleaning efficiency.

[0005] The technical solution of the utility model is as follows: A cleaning device for the outlet of a pelletizing rotary kiln includes a hinged base and an excavator. A connecting plate is provided on the hinged base. There are two connecting plates, and the two connecting plates are symmetrically distributed on both sides of the hinged base with respect to the central axis of the hinged base. An arc-shaped hole is provided on the connecting plate. The hinged base is connected to the boom of the excavator through bolts passing through the arc-shaped hole. The bottom of the hinged base is detachably connected with a rake rod base. A rake rod is provided on the rake rod base. The other end of the rake rod is provided with rake teeth. The rake teeth include upper rake teeth and lower rake teeth. The upper rake teeth and the lower rake teeth have the same structure, and the upper rake teeth and the lower rake teeth are symmetrically distributed with respect to the central axis of the rake rod.

[0006] As a further improvement, a reinforcing plate is provided on the hinged base, and one end of the reinforcing plate is connected to the middle of the connecting plate.

[0007] Further, a plurality of first bolt holes are provided on the articulated base, at least four reinforcing plates are provided, second bolt holes corresponding to the first bolt holes are provided on the rake bar base, bolts are inserted into the first bolt holes, and the bolts pass through the second bolt holes and are connected to nuts.

[0008] Further, reinforcing ribs are provided on the rake bar, one end of the reinforcing rib is connected to the rake teeth, and the other end of the reinforcing rib is connected to the rake bar base.

[0009] Further, the width a of each tooth corresponding to the upper rake teeth and the lower rake teeth is greater than the width of each grid corresponding to the material grid.

[0010] Further, the central axis of the rake bar and the central axis of the rake bar base are in the same plane.

[0011] Further, the central axis of the rake bar and the central axis of the rake teeth are perpendicular to each other.

[0012] Further, a load-bearing plate is provided on one side of the lower rake teeth, the load-bearing plate is perpendicular to the lower rake teeth, and the width of the load-bearing plate is greater than the thickness of the rotary kiln door.

[0013] Beneficial effects

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] A cleaning device for the outlet of a pellet rotary kiln of the present invention has a simple structure. The device is connected to the boom of an excavator through an articulated base and is driven by the hydraulic system of the excavator. Moreover, the device is a pure mechanical structure, which can avoid the situation of pipe explosion of the oil cylinder and hydraulic pipeline in a high-temperature environment, thus preventing safety accidents such as fires. Description of the drawings

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic structural diagram of the present invention when in use;

[0018] Figure 3 is an enlarged schematic structural diagram of the rake teeth in the present invention;

[0019] Figure 4 is an enlarged top view structural diagram of the articulated base in the present invention;

[0020] Figure 5 is an enlarged top view structural diagram of the rake bar base in the present invention.

[0021] Wherein: 1 - hinged base, 2 - rake bar base, 3 - rake bar, 4 - rake teeth, 41 - upper rake teeth, 42 - lower rake teeth, 5 - connecting plate, 6 - arc-shaped hole, 7 - first bolt hole, 8 - second bolt hole, 9 - reinforcing plate, 10 - reinforcing rib, 11 - load-bearing plate, 12 - excavator. Specific embodiments

[0022] The following further describes the present utility model with reference to specific embodiments in the accompanying drawings.

[0023] Refer to Figures 1-5 , a cleaning device for the outlet of a pellet rotary kiln, comprising a hinged base 1 and an excavator 12. A connecting plate 5 is provided on the hinged base 1. There are two connecting plates 5, and the two connecting plates 5 are symmetrically distributed on both sides of the hinged base 1 with respect to the central axis of the hinged base 1. An arc-shaped hole 6 is provided on the connecting plate 5, and two arc-shaped holes 6 are provided on each connecting plate 5. The hinged base 1 is connected to the boom of the excavator 12 through bolts passing through the arc-shaped holes 6. The hinged base 1 is installed at the position of the original bucket of the excavator 12. When the arc-shaped hole 6 is docked with the bolt hole on the boom of the excavator 12, there is an adjustment margin, which can avoid the inability to connect the hinged base 1 with the excavator boom 12 due to production errors, and at the same time, it can be applied to different models of excavators 12, effectively expanding the scope of use; the bottom of the hinged base 1 is detachably connected with a rake bar base 2, a rake bar 3 is provided on the rake bar base 2, and rake teeth 4 are provided at the other end of the rake bar 3. The rake teeth 4 include upper rake teeth 41 and lower rake teeth 42. The upper rake teeth 41 and the lower rake teeth 42 have the same structure, and the upper rake teeth 41 and the lower rake teeth 42 are symmetrically distributed with respect to the central axis of the rake bar 3. When it is necessary to clean the large lumps of ring material above the rotary furnace, it is not necessary to turn the rake teeth 4 by 180°, which improves the efficiency of cleaning the ring material; during use, the hinged base 1 is connected to the boom of the excavator 12 by bolts passing through the arc-shaped holes 6, so that the cleaning device is connected to the excavator 12, and then the assembled excavator 12 is moved to the furnace door of the rotary furnace. Move the rake teeth 4 so that the load-bearing plate 11 is located below the furnace door and supports the furnace door. After the furnace door bolts are removed, tilt the rake teeth 4 so that the furnace door leans on the rake teeth 4 and move it to other positions for placement. Then, use the cylinder of the excavator 12 to adjust the height and direction of the cleaning device, and rake out the large lumps of ring material in sequence. Using this device, it can operate at a relatively long distance, and the device is a pure mechanical structure, with a simple structure and no fire risk, and the cleaning efficiency is higher.

[0024] In this embodiment, at least four reinforcing plates 9 are provided on the hinged base 1, and one end of the reinforcing plate 9 is connected to the middle of the connecting plate 5; there are four reinforcing plates 9 in total, and the four reinforcing plates 9 are symmetrically distributed in pairs on both sides of the hinged base 1 with respect to the central axis of the hinged base 1, and the reinforcing plates 9 are located between the two arc-shaped holes 6. The connection strength between the connecting plate 5 and the hinged base 1 is enhanced by adding the reinforcing plates 9.

[0025] In this embodiment, a plurality of first bolt holes 7 are provided on the hinge base 1, and second bolt holes 8 corresponding to the first bolt holes 7 are provided on the rake bar base 2. Bolts are inserted into the first bolt holes 7, and the bolts pass through the second bolt holes 8 and are connected to nuts. There are four first bolt holes 7 in total, and the four first bolt holes are distributed at the four end corners of the hinge base 1. Correspondingly, there are also four second bolt holes 8, which are distributed at the four end corners of the rake bar base 2. Moreover, the diameter of the first bolt hole 7 is equal to the diameter of the second bolt hole 8, and the length and width of the hinge base 1 are both equal to the length and width of the rake bar base 2. The bolts pass through the first bolt holes 7 and the second bolt holes 8 in sequence to connect the hinge base 1 and the rake bar base 2.

[0026] In this embodiment, one end of the reinforcing rib 10 is connected to the rake teeth 4, and the other end of the reinforcing rib 10 is connected to the rake bar base 2, effectively improving the overall structural strength of the rake bar 3 and the connection strength between the rake bar 3, the rake bar base 2, and the rake teeth 4.

[0027] In this embodiment, the width a of each tooth corresponding to the upper rake teeth 41 and the lower rake teeth 42 is greater than the width of each grid corresponding to the material grid, which can avoid the rake teeth 4 and the material grid from getting stuck with each other when cleaning large lumps of agglomerates, and prevent damage to the material grid.

[0028] In this embodiment, the central axis of the rake bar 3 and the central axis of the rake bar base 2 are in the same plane, ensuring that the forces on both sides of the rake teeth 4 are the same during the process of cleaning large lumps of agglomerates, avoiding incomplete cleaning of the agglomerates in the kiln due to uneven force, and effectively improving the cleaning efficiency.

[0029] In this embodiment, the central axis of the rake bar 3 is perpendicular to the central axis of the rake teeth 4, and the included angle between the rake bar 3 and the rake teeth 4 is 90°. This can better clean the agglomerates in the rotary kiln through the rake teeth 4, effectively improving the efficiency of cleaning the agglomerates.

[0030] In this embodiment, a load-bearing plate 11 is provided on one side of the lower rake teeth 42. The load-bearing plate 11 is perpendicular to the lower rake teeth 42, and the width of the load-bearing plate 11 is greater than the thickness of the furnace door of the rotary furnace. When disassembling the furnace door of the rotary furnace, place the load-bearing plate 11 under the furnace door and support the furnace door. After removing the furnace door bolts, tilt the rake teeth 4 so that the furnace door leans on the rake teeth 4 and move it to other positions for placement, which is convenient for the disassembly of the furnace door.

[0031] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which will not affect the implementation effect of the present invention and the practicality of the patent.

Claims

1. A pelletizing rotary kiln outlet cleaning device, characterized in that: The invention comprises an articulated base (1) and an excavator (12). The articulated base (1) is provided with a connecting plate (5). The connecting plates (5) are in two pieces. The two connecting plates (5) are symmetrically distributed on both sides of the articulated base (1) about the central axis of the articulated base (1). The connecting plate (5) is provided with an arc hole (6). The articulated base (1) is connected to the boom of the excavator (12) by bolts passing through the arc hole (6). The bottom of the articulated base (1) is detachably connected with a rake rod base (2). The rake rod base (2) is provided with a rake rod (3). The other end of the rake rod (3) is provided with rake teeth (4). The rake teeth (4) include upper rake teeth (41) and lower rake teeth (42). The upper rake teeth (41) and the lower rake teeth (42) have the same structure, and the upper rake teeth (41) and the lower rake teeth (42) are symmetrically distributed about the central axis of the rake rod (3).

2. The pelletizing rotary kiln outlet cleaning device according to claim 1, characterized in that: The hinged base (1) is provided with a reinforcing plate (9), and there are at least four reinforcing plates (9). One end of the reinforcing plate (9) is connected to the middle of the connecting plate (5).

3. The pelletizing rotary kiln outlet cleaning device according to claim 1, characterized in that: The hinged base (1) is provided with a plurality of first bolt holes (7), the rake rod base (2) is provided with second bolt holes (8) corresponding to the first bolt holes (7), the first bolt holes (7) are plugged with bolts, and the bolts pass through the second bolt holes (8) and are connected with nuts.

4. The pelletizing rotary kiln outlet cleaning device according to claim 1, characterized in that: The rake rod (3) is provided with a reinforcing rib (10), one end of the reinforcing rib (10) is connected to the rake teeth (4), and the other end of the reinforcing rib (10) is connected to the rake rod base (2).

5. The pelletizing rotary kiln outlet cleaning device according to claim 1, characterized in that: The width a of each tooth corresponding to the upper rake teeth (41) and the lower rake teeth (42) is greater than the width of each grid corresponding to the material grid.

6. The pelletizing rotary kiln outlet cleaning device according to claim 1, characterized in that: The central axis of the rake rod (3) and the central axis of the rake rod base (2) are located on the same plane.

7. The pelletizing rotary kiln outlet cleaning device according to claim 1, characterized in that: The central axis of the rake rod (3) and the central axis of the rake teeth (4) are perpendicular to each other.

8. The pelletizing rotary kiln outlet cleaning device according to claim 1, characterized in that: A load-bearing plate (11) is provided on one side of the lower rake teeth (42), the load-bearing plate (11) and the lower rake teeth (42) are perpendicular to each other, and the width of the load-bearing plate (11) is greater than the thickness of the rotary kiln door.

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