Novel efficient air ring of coal mill

Abstract

The utility model discloses a novel efficient air ring of a coal mill, which comprises an outer ring body, an inner ring body is arranged on the inner side of the outer ring body, a plurality of middle separation blades are arranged between the outer ring body and the inner ring body, the space between the outer ring body and the inner ring body is divided into a plurality of air ducts by the middle separation blades, and a plurality of flow deflectors corresponding to the middle separation blades are arranged at the bottom of the outer ring body. The outer side of the outer ring body is connected with an outer reinforcing mechanism, the inner wall of the inner ring body is connected with an inner compression resisting mechanism, the outer reinforcing mechanism comprises a first thin ring, a second thin ring and mullion columns, the second thin ring is arranged on the inner side of the first thin ring, and the mullion columns are connected between the first thin ring and the second thin ring. The inner pressure-resistant mechanism comprises a reinforcing steel ring and a pressed ring fixedly connected to the outer side of the reinforcing steel ring, and the whole novel efficient air ring of the coal mill is higher in strength, not prone to being pressed and deformed and firmer and more durable.

Description

Technical Field

[0001] This utility model relates to the field of coal mills, specifically a new type of high-efficiency air ring for coal mills. Background Technology

[0002] Coal is ground into pulverized coal in a coal mill, primarily through three methods: crushing, impact crushing, and grinding. During the operation of the coal mill, the air ring, as a key component, has a crucial impact on grinding efficiency and pulverized coal quality. The air ring is an annular air duct inside the coal mill, its function being to transport the ground pulverized coal to equipment such as boilers using airflow. Existing coal mill air rings typically consist of an outer ring and an inner ring, with a relatively simple structure. Under significant external force, the rings deform, leading to uneven airflow, and the strength of the air ring needs improvement. Utility Model Content

[0003] The purpose of this invention is to provide a new type of high-efficiency air ring for coal mills to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel high-efficiency air ring for a coal mill, comprising an outer ring body, an inner ring body on the inner side of the outer ring body, a plurality of intermediate partition blades between the outer ring body and the inner ring body, the plurality of intermediate partition blades dividing the outer ring body and the inner ring body into a plurality of ventilation channels, a plurality of guide vanes corresponding to the intermediate partition blades on the bottom of the outer ring body, an overflow hole in the middle of the intermediate partition blades, an outer reinforcement mechanism connected to the outer side of the outer ring body, and an inner pressure-resistant mechanism connected to the inner wall of the inner ring body, the outer reinforcement mechanism comprising a first thin ring, a second thin ring and a mullion, the second thin ring being provided on the inner side of the first thin ring, and a plurality of mullions connecting the first thin ring and the second thin ring, the inner pressure-resistant mechanism comprising a reinforcing steel ring and a pressure-bearing ring fixedly connected to the outer side of the reinforcing steel ring.

[0005] Preferably, the center of the outer ring body coincides with the center of the inner ring body, one side of the top of the guide vane is connected to the bottom of the outer ring body, and the other side of the top of the guide vane is connected to the bottom of the inner ring body. A plurality of intermediate partition blades are equidistantly distributed, and a plurality of guide vanes are equidistantly distributed. The overflow hole penetrates the top and bottom of the intermediate partition blades. The surface of the inner wall of the outer ring body and the surface of the outer wall of the inner ring body are provided with positioning grooves that match the intermediate partition blades. The intermediate partition blades are secured between the outer ring body and the inner ring body through the positioning grooves, which facilitate the disassembly and replacement of the intermediate partition blades.

[0006] Preferably, the inner ring body has a plurality of reinforcing ribs connected to its inner wall surface, and the reinforcing ribs are located inside the inner anti-compression mechanism.

[0007] Preferably, the outer side of the external reinforcement mechanism is connected with several annular reinforcement strips, the outer surface of the external reinforcement mechanism is provided with an outer rubber pad, the inner side of the second thin ring is connected to the outer side of the outer ring body, the outer side of the pressure ring is connected to the inner wall of the inner ring body, and the external reinforcement mechanism and the inner pressure-resistant mechanism reinforce the wind ring.

[0008] Preferably, both the outer ring and the inner ring include a base material layer, a waterproof layer disposed outside the base material layer, and an anti-corrosion outer layer disposed outside the waterproof layer. The base material layer is made of stainless steel, the waterproof layer is made of polyurethane, and the anti-corrosion outer layer is made of epoxy resin coating. The waterproof layer and the anti-corrosion layer reduce the oxidation and corrosion of the outer ring and the inner ring.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] During use, the airflow is further evenly dispersed by the guide vanes, and the overflow hole in the middle of the diaphragm blades allows a small portion of the airflow to pass through, resulting in uniform and efficient ventilation of the air ring. The outer ring is equipped with an external reinforcement mechanism, which improves the compressive strength of the outer side of the air ring through the first thin ring, the second thin ring, and the central mullion. Several central mullions can disperse the pressure from the outer side onto the second thin ring, effectively protecting the outer side of the outer ring. In addition, the inner ring is equipped with an internal pressure-resistant mechanism, which strengthens the inner side of the air ring through the reinforcement steel ring and the pressure-bearing ring, resulting in high internal compressive strength, resistance to deformation, and higher overall strength of the air ring, making it more robust and durable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a top view of the external reinforcement mechanism of this utility model;

[0013] Figure 3 This is a partial structural diagram of the internal anti-compression mechanism of this utility model;

[0014] Figure 4 This is a structural diagram showing the connection between the outer ring and the inner ring of this utility model;

[0015] Figure 5 This is a structural diagram of the outer ring body of this utility model.

[0016] In the diagram: 1. Outer ring; 2. Inner ring; 3. Central diaphragm blade; 4. Ventilation duct; 5. Guide vane; 6. External reinforcement mechanism; 7. Internal pressure-resistant mechanism; 8. First thin ring; 9. Second thin ring; 10. Central mullion; 11. Reinforcing steel ring; 12. Pressure-bearing ring; 13. Reinforcing rib; 14. Overflow hole; 15. Positioning slot; 16. Base material layer; 17. Waterproof layer; 18. Anti-corrosion outer layer; 19. Annular reinforcing strip; 20. Outer rubber pad. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model provides a novel high-efficiency air ring for a coal mill, comprising an outer ring body 1, an inner ring body 2 on the inner side of the outer ring body 1, a plurality of intermediate partition blades 3 between the outer ring body 1 and the inner ring body 2, the intermediate partition blades 3 dividing the space between the outer ring body 1 and the inner ring body 2 into a plurality of ventilation channels 4, a plurality of guide vanes 5 corresponding to the intermediate partition blades 3 at the bottom of the outer ring body 1, an overflow hole 14 in the middle of the intermediate partition blades 3, an outer reinforcement mechanism 6 connected to the outer side of the outer ring body 1, and an inner anti-compression mechanism 7 connected to the inner wall of the inner ring body 2, the outer reinforcement mechanism 6 including a first thin ring. 8. The second thin ring 9 and the central mullion 10 are provided on the inner side of the first thin ring 8, and a number of central mullions 10 are connected between the first thin ring 8 and the second thin ring 9. The inner anti-compression mechanism 7 includes a reinforcing steel ring 11 and a pressure ring 12 fixedly connected to the outside of the reinforcing steel ring 11. The outer ring 1 and the inner ring 2 both include a base material layer 16, a waterproof layer 17 provided on the outside of the base material layer 16, and an anti-corrosion outer layer 18 provided on the outside of the waterproof layer 17. The base material layer 16 is made of stainless steel, the waterproof layer 17 is made of polyurethane, and the anti-corrosion outer layer 18 is made of epoxy resin coating.

[0019] See Figure 1-5 The center of the outer ring body 1 coincides with the center of the inner ring body 2. One side of the top of the guide vane 5 is connected to the bottom of the outer ring body 1, and the other side of the top of the guide vane 5 is connected to the bottom of the inner ring body 2. Several intermediate partition blades 3 are equidistantly distributed, and several guide vanes 5 are equidistantly distributed. The overflow hole 14 penetrates the top and bottom of the intermediate partition blade 3. The surface of the inner wall of the outer ring body 1 and the surface of the outer wall of the inner ring body 2 are provided with positioning slots 15 that match the intermediate partition blades 3. The intermediate partition blades 3 are clamped between the outer ring body 1 and the inner ring body 2 through the positioning slots 15.

[0020] In this embodiment, when the wind passes between the outer ring body 1 and the inner ring body 2, it is diverted and blown downward through several ventilation channels 4, and the wind is further evenly dispersed through the guide vane 5. The middle of the partition blade 3 is provided with an overflow hole 14, which can also allow a small portion of the wind to pass through, resulting in uniform and efficient ventilation of the wind ring.

[0021] See Figure 1-5The inner wall of the inner ring 2 is connected to several reinforcing ribs 13, which are located inside the inner anti-compression mechanism 7. The outer side of the outer reinforcement mechanism 6 is connected to several annular reinforcing strips 19, and the outer surface of the outer reinforcement mechanism 6 is provided with an outer rubber pad 20. The inner side of the second thin ring 9 is connected to the outer side of the outer ring 1, and the outer side of the pressure ring 12 is connected to the inner wall of the inner ring 2.

[0022] In this embodiment, an external reinforcement mechanism 6 is provided on the outer side of the outer ring body 1. The first thin ring 8, the second thin ring 9 and the central mullion 10 can improve the pressure resistance of the outer side of the wind ring. Several central mullions 10 can disperse the pressure on the outer side to the second thin ring 9, so that the outer side of the outer ring body 1 is effectively protected. In addition, an internal pressure resistance mechanism 7 is provided on the inner side of the inner ring body 2. The inner side of the wind ring is reinforced and strengthened by the reinforcing steel ring 11 and the pressure ring 12.

[0023] In practical use, this novel high-efficiency air ring for a coal mill, when used for ventilation, allows air to flow downwards through several ventilation channels 4 between the outer ring 1 and the inner ring 2, and is further evenly dispersed by guide vanes 5. An overflow hole 14 in the center of the partition blade 3 allows a small portion of the air to pass through, resulting in uniform and efficient ventilation. An external reinforcement mechanism 6 is provided on the outer side of the outer ring 1. The first thin ring 8, the second thin ring 9, and the central mullions 10 enhance the compressive strength of the outer side of the air ring. The central mullions 10 disperse the pressure from the outer side onto the second thin ring 9, effectively protecting the outer side of the outer ring 1. Furthermore, an internal compressive strength mechanism 7 is provided on the inner side of the inner ring 2. The reinforcing steel ring 11 and the pressure-bearing ring 12 strengthen the inner side of the air ring, resulting in high internal compressive strength, resistance to deformation, and overall higher strength, making the air ring more durable and resistant to deformation under pressure.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A new type of high efficiency wind ring of coal mill, comprising an outer ring body (1), characterized in that: The outer ring body (1) has an inner ring body (2) on its inner side. A plurality of intermediate partition blades (3) are provided between the outer ring body (1) and the inner ring body (2). The intermediate partition blades (3) divide the outer ring body (1) and the inner ring body (2) into a plurality of ventilation channels (4). The bottom of the outer ring body (1) is provided with a plurality of guide vanes (5) corresponding to the intermediate partition blades (3). An overflow hole (14) is provided in the middle of the intermediate partition blades (3). An external reinforcement mechanism is connected to the outer side of the outer ring body (1). (6) The inner wall of the inner ring (2) is connected to an inner anti-compression mechanism (7). The outer reinforcement mechanism (6) includes a first thin ring (8), a second thin ring (9) and a central mullion (10). The inner side of the first thin ring (8) is provided with the second thin ring (9), and a plurality of central mullions (10) are connected between the first thin ring (8) and the second thin ring (9). The inner anti-compression mechanism (7) includes a reinforcing steel ring (11) and a pressure ring (12) fixedly connected to the outside of the reinforcing steel ring (11).

2. The novel high-efficiency air ring for a coal mill according to claim 1, characterized in that: The center of the outer ring (1) coincides with the center of the inner ring (2), one side of the top of the guide vane (5) is connected to the bottom of the outer ring (1), and the other side of the top of the guide vane (5) is connected to the bottom of the inner ring (2).

3. A high efficiency air ring for a new type coal mill as claimed in claim 1, wherein: Several of the aforementioned partition blades (3) are equidistantly distributed, several of the aforementioned guide vanes (5) are equidistantly distributed, the overflow hole (14) penetrates the top and bottom of the partition blades (3), the inner wall of the outer ring body (1) and the outer wall of the inner ring body (2) are provided with positioning slots (15) that match the partition blades (3), and the partition blades (3) are fitted between the outer ring body (1) and the inner ring body (2) through the positioning slots (15).

4. A high efficiency air ring for a new type coal mill as claimed in claim 1, wherein: The inner wall of the inner ring (2) is connected with several reinforcing ribs (13), which are located inside the inner anti-compression mechanism (7).

5. A high efficiency air ring for a new type coal mill as claimed in claim 1, wherein: The outer side of the external reinforcement mechanism (6) is connected with several annular reinforcement strips (19), and the outer surface of the external reinforcement mechanism (6) is provided with an outer rubber pad (20).

6. A high efficiency air ring for a new type of coal mill as claimed in claim 1, wherein: The inner side of the second thin ring (9) is connected to the outer side of the outer ring (1), and the outer side of the pressure ring (12) is connected to the inner wall of the inner ring (2).

7. A high efficiency air ring for a new type of coal mill as claimed in claim 1, wherein: Both the outer ring (1) and the inner ring (2) include a base material layer (16), a waterproof layer (17) disposed outside the base material layer (16), and an anti-corrosion outer layer (18) disposed outside the waterproof layer (17). The base material layer (16) is made of stainless steel, the waterproof layer (17) is made of polyurethane, and the anti-corrosion outer layer (18) is made of epoxy resin coating.

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