Blast furnace raw material dust collecting and conveying device

Abstract

The utility model discloses a blast furnace raw material dust collecting and conveying device which comprises a hopper, supporting frames are symmetrically arranged on the two sides of the hopper, and horizontal mounting plates are arranged at the bottoms of the supporting frames. An outlet in the bottom of the hopper is sequentially communicated with a rotating pipe, a corrugated pipe and a conveying pipe; the outer wall of the rotating pipe is sleeved with a flange, and the flange is connected with the bottom of the hopper. The orientation of the conveying pipe is adjusted by rotating the rotating pipe, the inclination angle of the conveying pipe is adjusted by bending the corrugated pipe, an outlet of the conveying pipe is aligned with a feeding port of the raw material dust blowing device, design is ingenious, adjustment is flexible, and practicability and convenience are achieved.

Description

Technical Field

[0001] The utility model relates to the field of smelting equipment, in particular to a blast furnace raw material dust collecting and conveying device. Background Art

[0002] Blast furnace smelting is a continuous production process, and the whole process is completed in the process of mutual contact between the charge from top to bottom and the gas from bottom to top. The charge is loaded into the furnace from the top of the furnace in a certain batch, blown into the tuyere and heated to 1000-1300℃ by the hot blast furnace. The coke in the charge burns in front of the tuyere, generating high temperature and reducing gas, which heats the slowly descending charge during the rising process in the furnace and reduces the oxides in the iron ore to metallic iron.

[0003] The raw materials for the iron-making blast furnace, such as iron ore, coke, limestone, dolomite and sintered ore, are sent from the material yard to the silo by conveyor belts before entering the blast furnace. If any abnormal situation occurs during the transportation process, the raw materials and dust will be scattered, resulting in high losses and difficulty in cleaning. Utility Model Content

[0004] The utility model provides a blast furnace raw material dust collecting and conveying device, which aims to collect and convey the raw materials and dust of the iron-making blast furnace, avoid spilling during the conveying process, and improve the utilization rate of the raw materials.

[0005] To achieve its purpose, the utility model adopts the following technical solutions:

[0006] A blast furnace raw material dust collection and conveying device comprises a hopper, support frames are symmetrically provided on both sides of the hopper, and a horizontal mounting plate is provided at the bottom of the support frames; a rotating pipe, a bellows and a conveying pipe are connected in sequence at the bottom outlet of the hopper, and the conveying pipe is connected to the feed port of a blast furnace raw material dust injection device; a flange is provided on the outer wall of the rotating pipe, and the flange is connected to the bottom of the hopper.

[0007] Preferably, the hopper is in the shape of a funnel that is wide at the top and narrow at the bottom.

[0008] Preferably, the flange is in a circular ring shape.

[0009] Preferably, a plurality of clearance holes are provided on the mounting plate.

[0010] Preferably, the inner diameter of the bellows is 50-100 mm.

[0011] Preferably, the support frame is a bent hollow steel pipe.

[0012] Preferably, the thickness of the mounting plate is 10-20 mm.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The blast furnace raw material dust collecting and conveying device provided by the utility model adjusts the direction of the conveying pipe by rotating the rotating pipe, and adjusts the inclination angle of the conveying pipe by bending the corrugated pipe, so that the outlet of the conveying pipe is aligned with the feed port of the raw material dust blowing device. The design is ingenious, the adjustment is flexible, and it is practical and convenient.

[0015] 2. The blast furnace raw material dust collecting and conveying device provided by the utility model, the hopper, conveying pipe, bellows, rotating pipe, flange, support frame and mounting plate are all made of stainless steel, and the joints of each component are sealed by welding, which is sturdy and durable, has good corrosion resistance, and reduces raw material loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a blast furnace raw material dust collection and transportation device of the utility model;

[0017] Figure 2 It is a partial cross-sectional view of the blast furnace raw material dust collection and transportation device of the utility model;

[0018] In the figure: 1- hopper; 2- conveying pipe; 3- bellows; 4- rotating pipe; 5- flange; 6- supporting frame; 7- mounting plate. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] like Figure 1-2 As shown, the utility model is a blast furnace raw material dust collection and transportation device, including a hopper 1, the hopper 1 is a funnel shape that is wide at the top and narrow at the bottom, and a support frame 6 formed by bending a hollow steel pipe is symmetrically welded on both sides of the hopper 1, and a horizontal mounting plate 7 with a thickness of 10mm is welded at the bottom of the support frame 6, and four symmetrically arranged at the four corners of the mounting plate 7; the bottom outlet of the hopper 1 is connected with a circular tubular rotating pipe 4, a bellows 3 and a conveying pipe 2 in sequence, and the conveying pipe 2 is connected to the feed port of the blast furnace raw material dust injection device; the outer wall of the rotating pipe 4 is provided with a circular ring-shaped flange 5, and the flange 5 is connected to the bottom of the hopper 1. Among them, the hopper 1, the conveying pipe 2, the bellows 3, the rotating pipe 4, the flange 5, the support frame 6 and the mounting plate 7 are all made of stainless steel, and the joints of each component are sealed by welding, and the inner diameter of the bellows 3 is 100mm.

[0021] When installing the device, first use bolts to pass through the clearance holes on the mounting plate 7 to fix the mounting plate 7 at an appropriate position below the blast furnace equipment, and then adjust the hopper 1 so that the top opening of the hopper 1 is located directly below the blast furnace raw material conveyor belt. When in use, turn the rotating tube 4 to adjust the direction of the conveying pipe 2, and bend the bellows 3 to adjust the inclination angle of the conveying pipe 2 so that the outlet of the conveying pipe 2 is aligned with the feed port of the raw material dust injection device. After the blast furnace raw material falls into the hopper 1, it enters the blast furnace raw material dust injection device from the rotating tube 4, the bellows 3, and the conveying pipe 2 in sequence.

Claims

1. A blast furnace raw material dust collection and transportation device, characterized in that: The invention comprises a hopper (1), wherein support frames (6) are symmetrically arranged on both sides of the hopper (1), and a horizontal mounting plate (7) is arranged at the bottom of the support frames (6); a rotating pipe (4), a corrugated pipe (3) and a conveying pipe (2) are connected in sequence at the bottom outlet of the hopper (1), and the conveying pipe (2) is connected to the feed port of a blast furnace raw material dust injection device; a flange (5) is arranged on the outer wall of the rotating pipe (4), and the flange (5) is connected to the bottom of the hopper (1).

2. A blast furnace raw material dust collection and transportation device as claimed in claim 1, characterized in that: The hopper (1) is in the shape of a funnel that is wide at the top and narrow at the bottom.

3. A blast furnace raw material dust collection and transportation device as claimed in claim 2, characterized in that: The flange (5) is in the shape of a circular ring.

4. A blast furnace raw material dust collection and transportation device as claimed in claim 3, characterized in that: The mounting plate (7) is provided with a plurality of clearance holes.

5. A blast furnace raw material dust collection and transportation device as claimed in claim 4, characterized in that: The inner diameter of the bellows (3) is 50-100 mm.

6. A blast furnace raw material dust collection and transportation device as claimed in claim 5, characterized in that: The support frame (6) is a bent hollow steel pipe.

7. A blast furnace raw material dust collection and transportation device according to any one of claims 1 to 6, characterized in that: The thickness of the mounting plate (7) is 10-20 mm.

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