Pellet circular cooler receiving hopper retaining wall

Abstract

The utility model relates to a receiving hopper retaining wall of a pellet circular cooler, which belongs to the technical field of pellet refractory material circular cooling and comprises a front retaining wall, a rear retaining wall, a side retaining wall and a middle distributing wall, the rear retaining wall is divided into an upper rear retaining wall and a detachable lower rear retaining wall, and retainer plates are welded on F iron at the bottoms of the side retaining wall and the upper rear retaining wall. Bottom ring beams are poured between the retainer plates and the bottoms of the side retaining walls and the upper rear retaining wall, the lower rear retaining wall comprises a heat-resistant steel frame, a wedge-shaped lattice structure is arranged on the inner side of the heat-resistant steel frame, and a wear-resistant brick layer is built in a wedge-shaped lattice. The bottom ring beam serves as a support, the corundum abrasive bricks resist impact and abrasion, the lower rear retaining wall serves as the most easily-damaged part in the receiving hopper, the rear retaining wall heat-resistant steel part is designed to be of a wedge-shaped lattice structure, the special abrasive bricks are built in lattices, high-strength steel fiber abrasion-resistant castable is used for overall pouring, and the abrasive bricks and the overall pouring structure are combined. The overall structural strength of the lower rear retaining wall can be better improved, and the service life is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pellet ring cooling machine receiving hopper retaining wall, belong to pellet refractory ring cooling technical field. BACKGROUND

[0002] Currently, after pellet production equipment tends to large-scale, pellet production quantity is high, and the proportion of hematite used in pellet raw material increases, sintering temperature is generally increased from 1250 DEG C to 1350 DEG C, while kiln skin amount increases, high-temperature pellet and small block kiln skin fall into ring cooling machine receiving hopper by fixed sieve, due to the drop reaches more than 6 meters, the impact, abrasion, high-temperature loss corrosion effect of pellet, kiln skin to rear retaining wall, side wall and flat material bump distribution wall of receiving hopper increases;One of the most vulnerable parts of ring cooling machine receiving hopper in pellet production, its use effect directly restricts the overall operation life of pellet three big machines.

[0003] Ring cooling machine receiving hopper usually includes funnel body, pouring layer and precast piece masonry layer. Currently, pouring layer and precast piece masonry layer of retaining wall are easily damaged under high temperature, impact and abrasion, and service life is only 12 to 18 months, and frequent maintenance is required during this period, which not only affects pellet production, but also increases maintenance cost. SUMMARY

[0004] The utility model provides a kind of pellet ring cooling machine receiving hopper retaining wall, solve the problems in the above background technique.

[0005] The utility model relates to a kind of pellet ring cooling machine receiving hopper retaining wall, including front retaining wall, rear retaining wall, side retaining wall and intermediate distribution wall, rear retaining wall is divided into upper rear retaining wall and detachable lower rear retaining wall, side retaining wall and upper rear retaining wall are made of corundum quality wear-resistant brick masonry, F iron is welded on the bottom of side retaining wall and upper rear retaining wall, and bottom ring beam is poured with steel fiber wear-resistant castable between the bottom of side retaining wall and upper rear retaining wall and retaining wall, lower rear retaining wall includes heat-resistant steel frame, and the inner side of heat-resistant steel frame is equipped with wedge-shaped lattice structure, and wear-resistant brick layer is masonryed in wedge-shaped lattice with corundum quality wear-resistant brick, and the inner side of heat-resistant steel frame is integrally poured with high-strength steel fiber wear-resistant castable.

[0006] As a preferred, the inner wall of bottom ring beam is inclinedly arranged with outer high and inner low, and the bottom wall of bottom ring beam is at the inner side of lower rear retaining wall, which can protect the upper part of lower rear retaining wall.

[0007] As a preferred, the inner wall of side retaining wall is inclinedly arranged with outer high and inner low, and the outer side of side retaining wall is provided with steel fiber wear-resistant castable layer, and the outer side of steel fiber wear-resistant castable layer and upper rear retaining wall is provided with silicate fiber board. The inclination of side retaining wall protects ring beam, so that the service life of receiving hopper is increased.

[0008] As a preferred, the upper part of the material supporting plate is welded with an anchor hook one, and the bottom ring beam covers the anchor hook one. The anchor hook one enhances the connection strength between the bottom ring beam and the material supporting plate, avoids cracking and falling caused by long-term impact of materials, and improves the overall stability of the structure.

[0009] As a preferred, a plurality of anchor hooks two are welded on the inner side of the heat-resistant steel frame, and the anchor hooks two are covered by the high-strength steel fiber wear-resistant castable on the inner side of the heat-resistant steel frame. The wear-resistant brick plus anchor hook structure can better improve the overall structural strength of the lower back wall and increase the service life.

[0010] As a preferred, support I-beams are arranged on the outer sides of the upper back wall and the bottom ring beam, and the top of the heat-resistant steel frame is detachably fixed on the support I-beams.

[0011] As a preferred, a heat-resistant and wear-resistant steel plate is fixed on the top of the intermediate material distribution wall to close the cooling air cavity, wear-resistant layers one made of corundum wear-resistant bricks are arranged on the outer side of the heat-resistant and wear-resistant steel plate and the upper side wall near the back wall side of the intermediate material distribution wall, and wear-resistant prefabricated brick layers one are arranged on the top of the heat-resistant and wear-resistant steel plate. The heat-resistant and wear-resistant steel plate is the last layer of protection for the cooling air cavity, better protects the cooling air cavity, and multiple wear-resistant structures cover the easy-wear areas to enhance the impact resistance and wear resistance of the intermediate material distribution wall.

[0012] As a preferred, wear-resistant layers two made of corundum wear-resistant bricks are arranged above the wear-resistant prefabricated brick layers one, and wear-resistant prefabricated brick layers two are arranged above the wear-resistant layers two. Multiple wear-resistant structures cover the easy-wear areas to enhance the impact resistance and wear resistance of the intermediate material distribution wall.

[0013] The utility model has the following beneficial effects:

[0014] The bottom ring beam is supported, the corundum wear-resistant bricks are impact-resistant and wear-resistant, the lower back wall is the most vulnerable part in the receiving hopper, the back wall heat-resistant steel part adopts a wedge-shaped lattice structure design, special wear-resistant bricks are arranged in the lattice, the wear-resistant bricks are integrally cast by high-strength steel fiber wear-resistant castable, the wear-resistant brick plus integral casting structure can better improve the overall structural strength of the lower back wall, and the service life is greatly improved. DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the utility model;

[0016] Figure 2 It is Figure 1 A-A sectional view structural schematic diagram;

[0017] Figure 3 It is Figure 1 A partial structural schematic diagram;

[0018] Figure 4 It is Figure 2 A partial structural schematic diagram;

[0019] In the diagram: 1. Front retaining wall; 2. Side retaining wall; 3. Wear-resistant layer two; 4. Wear-resistant precast brick layer two; 5. Wear-resistant precast brick layer one; 6. Upper rear retaining wall; 7. Supporting I-beam; 8. Alumina silicate fiberboard; 9. Anchor hook one; 10. Bottom ring beam; 11. Material support plate; 12. Heat-resistant steel frame; 13. Wedge-shaped grid; 14. Anchor hook two; 15. Wear-resistant brick layer; 16. F-iron; 17. Intermediate material distribution wall; 18. Wear-resistant layer one; 19. Heat-resistant and wear-resistant steel plate; 20. Steel fiber wear-resistant castable layer. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, as Figures 1 to 4 As shown, this utility model is a receiving hopper retaining wall for a pellet ring cooler, including a front retaining wall 1, a rear retaining wall, a side retaining wall 2, and a middle material distribution wall 17. The rear retaining wall is divided into an upper rear retaining wall 6 and a detachable lower rear retaining wall. The side retaining wall 2 and the upper rear retaining wall 6 are constructed of corundum wear-resistant bricks. A material support plate 11 is welded to the F-iron 16 at the bottom of the side retaining wall 2 and the upper rear retaining wall 6. A bottom ring beam 10 is cast between the material support plate 11 and the bottom of the side retaining wall 2 and the upper rear retaining wall 6 using steel fiber wear-resistant castable. The lower rear retaining wall includes a heat-resistant steel frame 12. The heat-resistant steel frame 12 has a wedge-shaped grid 13 structure on its inner side. The wedge-shaped grid 13 is constructed with corundum wear-resistant bricks to form a wear-resistant brick layer 15. The inner side of the heat-resistant steel frame 12 is integrally cast using high-strength steel fiber wear-resistant castable.

[0022] Working principle: Material falling from the top of the receiving hopper will be distributed by the intermediate distribution wall 17. Most of the material will fall between the intermediate distribution wall 17 and the rear retaining wall. Since the upper rear retaining wall 6 and the side retaining wall 2 are made of corundum wear-resistant bricks and are supported by the bottom ring beam 10, the corundum wear-resistant bricks are resistant to impact and wear. The lower rear retaining wall is the most vulnerable part in the receiving hopper. The heat-resistant steel frame 12 of the lower rear retaining wall adopts a wedge-shaped grid 13 structure design. The wear-resistant brick layer 15 is made of corundum wear-resistant bricks in the wedge-shaped grid 13 and is integrally cast with high-strength steel fiber wear-resistant castable. The wear-resistant bricks and the integral casting structure can better improve the overall structural strength of the lower rear retaining wall and greatly improve its service life.

[0023] In Example 2, based on Example 1, the inner wall of the bottom ring beam 10 is inclined with the outer side higher than the inner side, and the bottom wall of the bottom ring beam 10 is located inside the lower rear retaining wall.

[0024] The inner wall of the side retaining wall 2 is sloped with the outer side higher than the inner side. The outer side of the side retaining wall 2 is provided with a steel fiber wear-resistant castable layer 20. Both the steel fiber wear-resistant castable layer 20 and the outer side of the upper rear retaining wall 6 are provided with aluminum silicate fiberboard 8. The slope of the wear-resistant bricks of the side retaining wall 2 protects the ring beam.

[0025] The anchor hook one 9 is welded on the upper part of the material supporting plate 11, and the bottom ring beam 10 covers the anchor hook one 9. Before pouring the bottom ring beam 10, the anchor hook one 9 is welded on the upper part of the material supporting plate 11, and the steel fiber wear-resistant castable pours the anchor hook one 9 when pouring the bottom ring beam 10.

[0026] The plurality of anchor hooks two 14 are welded on the inner side of the heat-resistant steel frame 12, and the high-strength steel fiber wear-resistant castable on the inner side of the heat-resistant steel frame 12 covers the anchor hooks two 14. The anchor hooks two 14 are welded after the wear-resistant brick layer 15 is built, and the high-strength steel fiber wear-resistant castable is integrally poured, so that the wear-resistant brick and the anchor hook structure can better improve the overall structural strength of the lower back wall.

[0027] The support I-beam 7 is arranged on the outer side of the upper back wall 6 and the bottom ring beam 10, and the top of the heat-resistant steel frame 12 is detachably fixed on the support I-beam 7. The top of the heat-resistant steel frame 12 is fixed on the support I-beam 7 through bolts.

[0028] The heat-resistant and wear-resistant steel plate 19 is fixed on the top of the middle material distribution wall 17 and closes the cooling air cavity, wear-resistant layers one 18 made of corundum wear-resistant bricks are arranged on the outer side of the heat-resistant and wear-resistant steel plate 19 and the upper side wall of the middle material distribution wall 17 near the back wall, and the wear-resistant prefabricated brick layer one 5 is arranged on the top of the heat-resistant and wear-resistant steel plate 19.

[0029] The wear-resistant layer two 3 made of corundum wear-resistant bricks is arranged above the wear-resistant prefabricated brick layer one 5, and the wear-resistant prefabricated brick layer two 4 is arranged above the wear-resistant layer two 3. When the material falls above the middle material distribution wall 17, the material first collides with the wear-resistant prefabricated brick layer two 4, and through the multi-layer structure, the cooling air cavity of the middle material distribution wall 17 can be prevented from being damaged, and the maintenance time of the damaged cooling air cavity is increased.

[0030] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0031] In the description of the present application, the directions or position relationships indicated by the terms "in", "out", "longitudinal", "transverse", "upper", "lower", "top", "bottom" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and do not require the present application to be constructed and operated in a particular direction, therefore it cannot be understood as a limitation on the present application.

Claims

1. A pellet ring cooler receiving hopper retaining wall, comprising a front retaining wall (1), a rear retaining wall, a side retaining wall (2) and a middle dividing wall (17), characterized in that: The back wall is divided into an upper back wall (6) and a detachable lower back wall, the side wall (2) and the upper back wall (6) are built by corundum wear-resistant bricks, a material supporting plate (11) is welded on an F iron (16) at the bottom of the side wall (2) and the upper back wall (6), a bottom ring beam (10) is built between the material supporting plate (11) and the bottom of the side wall (2) and the upper back wall (6) by steel fiber wear-resistant castable, the lower back wall comprises a heat-resistant steel frame (12), a wedge-shaped grid (13) structure is arranged on the inner side of the heat-resistant steel frame (12), a wear-resistant brick layer (15) is built in the wedge-shaped grid (13) by corundum wear-resistant bricks, and the inner side of the heat-resistant steel frame (12) is integrally built by high-strength steel fiber wear-resistant castable.

2. A pocket baffle for a pellet ring cooler according to claim 1, characterized in that: The inner side wall of the bottom ring beam (10) is arranged to be inclined with the outer side being higher than the inner side, and the bottom wall of the bottom ring beam (10) is located on the inner side of the lower back wall.

3. A pocket wall for a pellet ring cooler according to claim 1, characterized in that: The inner wall of the side wall (2) is arranged to be inclined with the outer side being higher than the inner side, a steel fiber wear-resistant castable layer (20) is arranged on the outer side of the side wall (2), and the outer side of the steel fiber wear-resistant castable layer (20) and the upper back wall (6) is provided with an aluminum silicate fiber plate (8).

4. A pocket wall for a pellet ring cooler hopper according to claim 1, characterized in that: An anchoring hook one (9) is welded on the upper part of the material supporting plate (11), and the anchoring hook one (9) is covered in the bottom ring beam (10).

5. A pocket wall for a pellet ring cooler hopper according to claim 1, characterized in that: A plurality of anchoring hooks two (14) are welded on the inner side of the heat-resistant steel frame (12), and the anchoring hooks two (14) are covered in the high-strength steel fiber wear-resistant castable on the inner side of the heat-resistant steel frame (12).

6. A pocket wall for a pellet ring cooler hopper according to claim 1, characterized in that: Supporting I-beams (7) are arranged on the outer sides of the upper back wall (6) and the bottom ring beam (10), and the top of the heat-resistant steel frame (12) is detachably fixed on the supporting I-beams (7).

7. A pocket wall for a pellet ring cooler hopper according to claim 1, characterized in that: A heat-resistant and wear-resistant steel plate (19) is fixed on the top of the middle material distribution wall (17) to close the cooling air cavity, a wear-resistant layer one (18) built by corundum wear-resistant bricks is arranged on the outer side of the heat-resistant and wear-resistant steel plate (19) and the upper part of the side wall (2) close to the back wall, a wear-resistant prefabricated brick layer one (5) is arranged on the top of the heat-resistant and wear-resistant steel plate (19).

8. A pellet ring cooler receiving hopper retaining wall according to claim 7, characterised in that: A wear-resistant layer two (3) built by corundum wear-resistant bricks is arranged above the wear-resistant prefabricated brick layer one (5), and a wear-resistant prefabricated brick layer two (4) is arranged above the wear-resistant layer two (3).

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