High-strength anti-erosion magnesium-calcium castable structure for rotary kiln mouth

Abstract

The utility model relates to kiln mouth castable structure technical field, and disclose the high -strength anti scour magnesium calcium castable structure for rotary kiln mouth, including kiln cylinder, a plurality of first annular reinforcing plate and first connecting piece, a plurality of second annular reinforcing plate and second connecting piece and a plurality of anchor, the high -strength anti scour magnesium calcium castable structure for rotary kiln mouth, through being provided with a plurality of first annular reinforcing plate and first connecting piece and a plurality of second annular reinforcing plate and second connecting piece in annular heat -resisting steel guard board and in annular heat -resisting steel guard board inner wall evenly provided with a plurality of anchor, through the cooperation of first annular reinforcing plate and second annular reinforcing plate and anchor, can form multilayer anchor anti -drop structure to make the durability of this cast structure higher, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the technical field of kiln mouth castable structure, specifically a high-strength erosion-resistant magnesium-calcium castable structure for rotary kiln mouths. Background Technology

[0002] The kiln inlet of a rotary kiln is a crucial part of the kiln. Due to the constant contact between the kiln inlet and the friction of the material and the thermal stress of the machinery, it is highly susceptible to damage. To ensure the service life of the rotary kiln, a refractory lining is usually cast into the kiln inlet to protect it.

[0003] Currently, most rotary kiln inlet castable structures on the market use anchoring nails inside the castable for anchoring, which is relatively simple and does not provide ideal anchoring effect. This leads to the castable at the kiln inlet being prone to breakage and falling off, resulting in poor durability.

[0004] Therefore, we proposed a high-strength, erosion-resistant magnesium-calcium castable structure for the rotary kiln inlet to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that most of the current rotary kiln inlet castable structures are anchored by setting anchoring nails inside the castable, which is relatively simple and the anchoring effect of the castable is not ideal, resulting in the castable at the kiln inlet being easily damaged and falling off, and having poor durability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-strength erosion-resistant magnesium-calcium castable structure for rotary kiln inlet, comprising: a kiln shell, wherein an annular heat-resistant steel guard plate is provided at the kiln inlet position of the kiln shell, and castable material is provided on the annular heat-resistant steel guard plate.

[0007] Multiple first annular reinforcing plates and first connecting members are disposed on an annular heat-resistant steel protective plate, and the multiple first annular reinforcing plates are connected to the annular heat-resistant steel protective plate through the first connecting members;

[0008] Multiple second annular reinforcing plates and second connecting pieces are disposed on an annular heat-resistant steel protective plate, and the multiple second annular reinforcing plates are connected to the annular heat-resistant steel protective plate through the second connecting pieces;

[0009] Multiple anchors are evenly arranged around the inner wall of the annular heat-resistant steel liner.

[0010] The first annular reinforcing plate and the first connecting piece, as well as the anchor, are all encased within the castable material.

[0011] Furthermore, refractory bricks are arranged around the inner wall of the kiln shell, and a retaining ring is provided on the annular heat-resistant steel protective plate, the retaining ring being in contact with the refractory bricks.

[0012] Furthermore, the anchor includes an anchor plate connected to an annular heat-resistant steel guard plate, and multiple anchor columns are evenly connected in a fan shape on the anchor plate.

[0013] Furthermore, a plurality of first connecting bolts are arranged around the annular heat-resistant steel protective plate, and a first connecting nut is provided on the first connecting bolt. The annular heat-resistant steel protective plate is fixed to the kiln shell by the first connecting bolts and the first connecting nuts. A plurality of second connecting bolts are arranged around the retaining ring, and a second connecting nut is provided on the second connecting bolt. The annular heat-resistant steel protective plate is fixed to the annular heat-resistant steel protective plate and the kiln shell by the second connecting bolts and the second connecting nuts.

[0014] Furthermore, one side of the refractory brick is configured as a sloping structure.

[0015] Furthermore, both the first and second connectors are configured as U-shaped rod structures, with multiple first annular reinforcing plates fixed to the first connector and multiple second annular reinforcing plates fixed to the second connector.

[0016] Furthermore, the cross-section of the annular heat-resistant steel protective plate is a Z-shaped structure.

[0017] The beneficial effects of this utility model are as follows: By providing multiple first annular reinforcing plates and first connectors encased in the castable material on the annular heat-resistant steel protective plate, and multiple second annular reinforcing plates and second connectors, and by uniformly providing multiple anchors on the inner wall of the annular heat-resistant steel protective plate, a multi-layer anchoring and anti-detachment structure can be formed through the cooperation of the first annular reinforcing plates, the second annular reinforcing plates, and the anchors, thereby making the castable structure more durable and having a longer service life. Attached Figure Description

[0018] Figure 1 This is a first structural schematic diagram of the high-strength erosion-resistant magnesium-calcium castable structure for rotary kiln inlet of this utility model.

[0019] Figure 2 This is a schematic diagram of the second structure of the high-strength erosion-resistant magnesium-calcium castable for rotary kiln inlet of this utility model.

[0020] Figure 3 This is a schematic diagram of the first annular reinforcing plate structure of the high-strength erosion-resistant magnesium-calcium castable structure for rotary kiln inlet of this utility model.

[0021] Figure 4 This is a schematic diagram of the second annular reinforcing plate structure of the high-strength erosion-resistant magnesium-calcium castable structure for rotary kiln inlet of this utility model.

[0022] Figure 5This is a schematic diagram of the anchor structure of the high-strength erosion-resistant magnesium-calcium castable structure for the rotary kiln inlet of this utility model.

[0023] The names corresponding to each mark in the diagram:

[0024] 1. Kiln shell; 2. Annular heat-resistant steel protective plate; 3. Castable material; 4. First annular reinforcing plate; 5. First connector; 6. Second annular reinforcing plate; 7. Second connector; 8. Anchor; 81. Anchor plate; 82. Anchor column; 9. Refractory brick; 10. Retaining ring; 11. First connecting bolt; 12. First connecting nut; 13. Second connecting bolt; 14. Second connecting nut. Detailed Implementation

[0025] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0026] Embodiments of this utility model:

[0027] like Figures 1-5 As shown, this utility model provides a high-strength erosion-resistant magnesium-calcium castable structure for rotary kiln inlet, including a kiln body 1, multiple first annular reinforcing plates 4 and first connecting parts 5, multiple second annular reinforcing plates 6 and second connecting parts 7, and multiple anchors 8. An annular heat-resistant steel guard plate 2 is provided at the kiln inlet position of the kiln body 1. The cross-section of the annular heat-resistant steel guard plate 2 is a Z-shaped structure. Castable material 3 is provided on the annular heat-resistant steel guard plate 2. The castable material 3 is magnesium-calcium castable. Multiple first connecting bolts 11 are arranged around the annular heat-resistant steel guard plate 2. First connecting nuts 12 are provided on the first connecting bolts 11. The annular heat-resistant steel guard plate 2 is fixed to the kiln body 1 by the first connecting bolts 11 and the first connecting nuts 12, ensuring the firmness of the connection.

[0028] like Figures 1-5As shown, multiple first annular reinforcing plates 4 and first connecting pieces 5 are disposed on the annular heat-resistant steel protective plate 2. The multiple first annular reinforcing plates 4 are connected to the annular heat-resistant steel protective plate 2 through the first connecting pieces 5. Further, the multiple first annular reinforcing plates 4 and first connecting pieces 5 are disposed on the inner wall of the annular heat-resistant steel protective plate 2. Multiple second annular reinforcing plates 6 and second connecting pieces 7 are disposed on the annular heat-resistant steel protective plate 2. The multiple second annular reinforcing plates 6 are connected to the annular heat-resistant steel protective plate 2 through the second connecting pieces 7. Further, the multiple second annular reinforcing plates 6 and second connecting pieces 7 are disposed on the end face of the annular heat-resistant steel protective plate 2, and the diameter of the multiple second annular reinforcing plates 6 is different. The first connecting pieces 5 and the second connecting pieces 7 are both configured as U-shaped rod structures. The multiple first annular reinforcing plates 4 are fixed to the first connecting pieces 5, and the multiple second annular reinforcing plates 6 are fixed to the second connecting pieces 7. Through the cooperation of the multiple first annular reinforcing plates 4 and the second annular reinforcing plates 6, a multi-layer anchoring and anti-detachment structure can be formed.

[0029] like Figures 1-5 As shown, multiple anchors 8 are evenly arranged around the inner wall of the annular heat-resistant steel guard plate 2. The anchors 8 include anchor plates 81 connected to the annular heat-resistant steel guard plate 2. Multiple anchor columns 82 are evenly connected in a fan shape on the anchor plates 81. The first annular reinforcing plate 4 and the first connecting piece 5, as well as the anchors 8, are all encased in the castable material 3. The multiple anchors 8 are distributed between every two adjacent first annular reinforcing plates 4 and every two adjacent second annular plates to enhance the anchoring effect on the castable material 3.

[0030] like Figures 1-5 As shown, refractory bricks 9 are arranged around the inner wall of the kiln shell 1. A retaining ring 10 is provided on the annular heat-resistant steel guard plate 2. The retaining ring 10 is in contact with the refractory bricks 9. One side of the refractory bricks 9 is set with a sloping structure. Multiple second connecting bolts 13 are arranged around the retaining ring 10. Second connecting nuts 14 are provided on the second connecting bolts 13. The annular heat-resistant steel guard plate 2 is fixed to the annular heat-resistant steel guard plate 2 and the kiln shell 1 through the second connecting bolts 13 and the second connecting nuts 14. The refractory bricks 9 first resist the direct impact of the material, and the retaining ring 10 reduces the pressure of the refractory bricks 9 on the castable material 3.

Claims

1. A high-strength, erosion-resistant magnesium-calcium castable structure for the kiln inlet of a rotary kiln, characterized in that, include: A kiln shell (1) is provided with an annular heat-resistant steel guard plate (2) at the kiln opening position of the kiln shell (1), and a castable material (3) is provided on the annular heat-resistant steel guard plate (2); Multiple first annular reinforcing plates (4) and first connecting pieces (5) are disposed on annular heat-resistant steel guard plate (2), and the multiple first annular reinforcing plates (4) are connected to the annular heat-resistant steel guard plate (2) through the first connecting pieces (5); Multiple second annular reinforcing plates (6) and second connecting pieces (7) are disposed on the annular heat-resistant steel guard plate (2), and the multiple second annular reinforcing plates (6) are connected to the annular heat-resistant steel guard plate (2) through the second connecting pieces (7); Multiple anchors (8) are evenly arranged around the inner wall of the annular heat-resistant steel guard plate (2); The first annular reinforcing plate (4) and the first connector (5), as well as the anchor (8), are all encased in the castable material (3).

2. The high-strength, erosion-resistant magnesia-calcium castable structure for rotary kiln inlet according to claim 1, characterized in that: The inner wall of the kiln body (1) is surrounded by refractory bricks (9), and a retaining ring (10) is provided on the annular heat-resistant steel guard plate (2), and the retaining ring (10) is in contact with the refractory bricks (9).

3. The high-strength, erosion-resistant magnesia-calcium castable structure for rotary kiln inlet according to claim 1, characterized in that: The anchor (8) includes an anchor plate (81) connected to the annular heat-resistant steel guard plate (2), and multiple anchor columns (82) are evenly connected in a fan shape on the anchor plate (81).

4. The high-strength, erosion-resistant magnesia-calcium castable structure for the rotary kiln inlet according to claim 2, characterized in that: The annular heat-resistant steel guard plate (2) is surrounded by a plurality of first connecting bolts (11), and a first connecting nut (12) is provided on the first connecting bolts (11). The annular heat-resistant steel guard plate (2) is fixed to the kiln shell (1) by the first connecting bolts (11) and the first connecting nut (12). The retaining ring (10) is surrounded by a plurality of second connecting bolts (13), and a second connecting nut (14) is provided on the second connecting bolts (13). The annular heat-resistant steel guard plate (2) is fixed to the annular heat-resistant steel guard plate (2) and the kiln shell (1) by the second connecting bolts (13) and the second connecting nut (14).

5. The high-strength, erosion-resistant magnesia-calcium castable structure for the rotary kiln inlet according to claim 2, characterized in that: One side of the refractory brick (9) is configured as a sloping structure.

6. The high-strength, erosion-resistant magnesia-calcium castable structure for rotary kiln inlet according to claim 1, characterized in that: Both the first connector (5) and the second connector (7) are configured as U-shaped rod structures. Multiple first annular reinforcing plates (4) are fixed to the first connector (5), and multiple second annular reinforcing plates (6) are fixed to the second connector (7).

7. The high-strength, erosion-resistant magnesia-calcium castable structure for rotary kiln inlet according to claim 1, characterized in that: The cross-section of the annular heat-resistant steel guard plate (2) is Z-shaped.

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