Integrated fluidization pressing plate device of blast furnace injection tank

Abstract

The utility model discloses an integrated fluidization pressing plate device of a blast furnace injection tank. The integrated fluidization pressing plate device comprises a central disc, the outer circular ring is arranged outside the central disc, and a plurality of mounting holes are annularly distributed in the outer circular ring; and the plurality of connecting plates are annularly arranged outside the central disc respectively and connect the outer circular ring and the central disc into a whole.

Description

Technical Field

[0001] The utility model relates to the technical field of coal injection equipment, in particular to an integrated fluidized pressing plate device for a blast furnace injection tank. Background Art

[0002] Blast furnace pulverized coal injection is a common injection technology used in modern blast furnaces. It uses pulverized coal to replace part of the coke, which has good economic benefits. The current blast furnace injection system adopts a tank-to-tank injection method. The bottom fluidization device of the injection system uses the bottom nitrogen to fluidize and fluff the pulverized coal in the injection tank through the fluidizing plate, which is conducive to injection. The bottom vulcanization plate and fluidized bed play an important role in the injection system. However, the current fluidized plate structure is unstable, resulting in a fragile overall structure, making the fluidized bed easy to break in a high-pressure environment and having a short service life. Utility Model Content

[0003] In view of the above technical problems, the utility model provides an integrated fluidized platen device for a blast furnace spray tank.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A blast furnace spray tank integrated fluidized platen device, comprising:

[0006] center disc;

[0007] The outer ring is arranged outside the central disk and has a plurality of mounting holes distributed in an annular pattern;

[0008] A plurality of connecting plates are respectively arranged outside the central disk in an annular shape and connect the outer ring with the central disk to form a whole.

[0009] The outer ring has an outer diameter of φ790 mm, an inner diameter of φ722 mm, and a thickness of 30 mm.

[0010] The mounting hole has a diameter of 20 mm and a center angle of 18°.

[0011] The connecting plate has a thickness of 25 mm, an inner diameter of 700 mm, and a width of 22 mm at the inner connection with the outer ring.

[0012] The center disk has a diameter of 130 mm and a thickness of 25 mm.

[0013] Both ends of the connecting plate are in a R30 rounded shape.

[0014] The beneficial effects of the utility model are as follows: the utility model utilizes a center disc, an outer ring and a plurality of connecting plates to form an integrated wheel-like design, which improves the structural stability. At the same time, due to the integrated design, stress fracture points will not occur due to the high-pressure environment, thereby improving the overall service life. Among them, the various parameter requirements of the center disc, the outer ring and the plurality of connecting plates are also to meet the high-pressure working environment of the fluidized bed and prevent fracture. When in use, it is fixed to the fluidized bed with bolts so that the medium gas is concentrated in the middle of the fluidizing device, the suspension fluidization effect of the coal powder in the middle is strengthened, the coal powder on the fluidizing device is easy to flow, the stability of the coal powder injection is ensured, and the working effect of the fluidized injection device is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0016] Figure 1 It is the principle diagram of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0018] like Figure 1 As shown, a blast furnace spray tank integrated fluidized plate device includes: a central disc 3; an outer ring 1, which is arranged outside the central disc 3 and has a plurality of mounting holes distributed in a ring shape; a plurality of connecting plates 2, which are respectively arranged outside the central disc 3 in a ring shape and connect the outer ring 1 and the central disc 3 into a whole. The outer diameter of the outer ring 1 is φ790mm, the inner diameter is φ722mm, and the thickness is 30mm. The diameter of the mounting hole is 20mm, and the center angle of the circular hole is 18°. The thickness of the connecting plate 2 is 25mm, the inner diameter is 700mm, and the width of the connection with the inner side of the outer ring 1 is 22mm. The diameter of the central disc 3 is 130mm, and the thickness is 25mm. The two ends of the connecting plate 2 are R30 chamfered.

[0019] When in use, the utility model utilizes a central disc 3, an outer ring 1 and a plurality of connecting plates 2 to form an integrated wheel-like design, which improves the structural stability. Since it is an integrated design, stress fracture points will not occur due to a high-pressure environment, thereby improving the overall service life. When in use, it is fixed on the fluidized bed with bolts, so that the medium gas is concentrated in the middle of the fluidizing device, the suspension fluidization effect of the coal powder in the middle is strengthened, the coal powder on the fluidizing device is easy to flow, the stability of the coal powder injection is guaranteed, and the working effect of the fluidized injection device is greatly improved.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A blast furnace spray tank integrated fluidized platen device, characterized in that: include: Central disk (3); An outer ring (1) is arranged outside the central disk (3) and has a plurality of mounting holes distributed in an annular pattern; A plurality of connecting plates (2) are respectively arranged in an annular shape outside the central disk (3) and connect the outer ring (1) and the central disk (3) into a whole.

2. The blast furnace spray tank integrated fluidized platen device according to claim 1, characterized in that: The outer ring (1) has an outer diameter of φ790 mm, an inner diameter of φ722 mm, and a thickness of 30 mm.

3. A blast furnace spray tank integrated fluidized platen device according to claim 1 or 2, characterized in that: The mounting hole has a diameter of 20 mm and a center angle of 18°.

4. The blast furnace spray tank integrated fluidized platen device according to claim 1, characterized in that: The connecting plate (2) has a thickness of 25 mm, an inner diameter of 700 mm, and a width of 22 mm at the inner connection with the outer ring (1).

5. The blast furnace spray tank integrated fluidized platen device according to claim 1, characterized in that: The central disc (3) has a diameter of 130 mm and a thickness of 25 mm.

6. The blast furnace spray tank integrated fluidized platen device according to claim 1, characterized in that: Both ends of the connecting plate (2) are in the shape of R30 chamfered corners.

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