A metallurgical charge screening device

Abstract

The utility model discloses a metallurgical furnace charge screening device belongs to charge screening technical field, can when feeding, the multiple material guiding column of staggered arrangement of cavity top portion carries out the flow dispersion to material, avoids local accumulation, ensures that charge evenly spreads in screening area, avoids raw material accumulation in a place to cause sieve hole filter blockage etc.

Description

Technical Field

[0001] This utility model belongs to the field of furnace charge screening technology, specifically relating to a metallurgical furnace charge screening device. Background Technology

[0002] Metallurgical technology involves extracting metals and metal compounds from ores and then using various methods to produce metallic materials with specific properties. Since ancient times, after copper was extracted, the relationship between human production and life and metals and their products has become increasingly close. In modern society, people's clothing, food, housing, and transportation are inseparable from metallic materials, and the tools and facilities used in production activities also require the use of metallic materials. Metallurgical furnace materials refer to the raw and auxiliary materials used in iron and steel smelting production. They typically include iron ore, scrap steel, pig iron, coke, ferroalloys, etc. However, these raw materials contain many impurities and are difficult to use directly, so they need to be screened.

[0003] In existing metallurgical furnace charge screening devices, when materials are directly fed through a single feed inlet, the lack of a flow guiding and rectifying mechanism causes the furnace charge to fall in a parabolic trajectory within the screening chamber. This results in a radial distribution gradient of the material on the screen surface, causing local overload and blockage of the screen holes. Therefore, a metallurgical furnace charge screening device is needed to help solve this problem. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a metallurgical furnace charge screening device. During feeding, multiple guide columns arranged in a staggered pattern at the top of the chamber guide and disperse the material, preventing local accumulation and ensuring that the furnace charge is evenly spread in the screening area. This minimizes the risk of raw materials accumulating in one place and causing clogging of the screen holes.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a metallurgical furnace charge screening device, which includes a screening box, a feed inlet at the top of the screening box, a discharge funnel at the feed inlet, a screening chamber inside the screening box, a screening frame horizontally inserted into the screening chamber, a screening screen mounted on the screening frame, the screening box fixed on a base frame, a transmission component at the top of the base frame for driving the screening frame to reciprocate horizontally, a collection funnel fixed at the bottom of the screening box, and a conveying component for assisting in the overall screening of the furnace charge at the bottom of the collection funnel.

[0008] A guide column is fixed near the top of the screening chamber. An air outlet is provided on the side of the screening box, corresponding to the guide column and the screening frame. An air suction pipe is installed at the air outlet and is connected to a negative pressure pump through a pipeline.

[0009] Furthermore, a plurality of guide columns are provided, and the plurality of guide columns are arranged alternately within the screening chamber.

[0010] Furthermore, a positioning bolt is threaded onto one side of the screening frame, with one end of the positioning bolt resting on the outer side of the screening mesh.

[0011] Furthermore, the transmission assembly includes a transmission motor installed at the bottom of the base frame, a transmission disc fixed to the front end of the shaft of the transmission motor, a protruding column protruding from the outer edge of the transmission disc, and a T-shaped fixing frame fixed on one side of the screening frame near the transmission assembly, with a sliding groove provided on the fixing frame for the protruding column to slide.

[0012] Furthermore, symmetrically arranged limiting grooves are provided on the screening frame, and a limiting strip is provided on the screening box at the opening corresponding to the limiting groove, and the limiting groove and the limiting strip slide together.

[0013] Furthermore, ball bearings are embedded inside the limiting groove, and the ball bearings are evenly spaced within the limiting groove.

[0014] Furthermore, the conveying assembly includes a conveying shaft rotatably disposed at the bottom of the collecting funnel at equal intervals, a conveyor belt is wound around the conveying shaft, and a conveying motor that drives the conveying shaft to rotate is installed on one side of the collecting funnel.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model uses guide columns that are staggered and fixed in the screening chamber. During feeding, multiple guide columns staggered at the top of the chamber can guide and disperse the material, avoid local accumulation, ensure that the furnace material is evenly spread in the screening area, and minimize the accumulation of raw materials in one place, which can cause clogging of the screen holes.

[0018] This invention utilizes a conveying assembly located at the bottom of a collection hopper. Screened fines fall into the bottom collection hopper and are discharged through the conveying assembly. Within the conveying assembly, a conveying motor drives multiple parallel conveying shafts to rotate, which in turn rotates the conveyor belts surrounding them, continuously transporting the fines to the next process. This design minimizes the accumulation of screened raw materials at the bottom of the device during subsequent operations, ensuring smooth operation of subsequent processes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a longitudinal sectional view of the present invention;

[0022] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0023] Figure 4 This utility model Figure 2 A magnified structural diagram at point B in the middle.

[0024] The labels in the attached diagram are as follows: 1. Screening box; 2. Discharge hopper; 3. Screening frame; 31. Limiting groove; 32. Ball bearing; 33. Limiting strip; 4. Screening mesh; 5. Positioning bolt; 6. Transmission assembly; 7. Transmission motor; 8. Transmission disc; 9. Protruding column; 10. Fixed frame; 11. Guide column; 12. Suction pipe; 13. Base frame; 14. Collection hopper; 15. Conveying assembly; 16. Conveying shaft; 17. Conveying motor; 18. Conveying belt. 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. 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.

[0026] This specific embodiment is a metallurgical furnace charge screening device, such as... Figure 1 and Figure 2As shown, the metallurgical furnace charge screening device includes a screening box 1, a feed inlet at the top of the screening box 1, a discharge funnel 2 installed at the feed inlet, a screening chamber inside the screening box 1, a screening frame 3 horizontally inserted and installed inside the screening chamber, a screening screen 4 mounted on the screening frame 3, a transmission assembly 6 at the top of the base frame 13 for driving the screening frame 3 to reciprocate horizontally, the transmission assembly 6 includes a transmission motor 7 installed at the bottom of the base frame 13, a transmission disc 8 fixed at the front end of the shaft of the transmission motor 7, a protruding column 9 protruding from the outer edge of the transmission disc 8, and a T-shaped fixing frame 10 fixed on the side of the screening frame 3 near the transmission assembly 6, the fixing frame 10 having a sliding groove for the protruding column 9 to slide.

[0027] Through the transmission component 6, the transmission motor 7 drives the transmission disc 8 to rotate, and the protruding column 9 on its outer edge makes a circular motion and is embedded in the sliding groove of the T-shaped fixing frame 10 on the side of the screening frame 3, converting the rotational motion into the linear reciprocating motion of the screening frame 3. This ensures that the screening screen 4 on the screening frame 3 vibrates with the motion during operation, classifying and screening the furnace material. Fine particles fall through the mesh, while coarse particles remain on the screen surface. After a period of use, the accumulated impurities can be removed.

[0028] The screening chamber is equipped with several guide columns 11 near the top. These guide columns 11 are arranged in a staggered manner within the screening chamber. During feeding, the multiple guide columns 11 arranged in a staggered manner at the top of the chamber guide and disperse the material, preventing local accumulation and ensuring that the furnace charge is evenly spread in the screening area. This minimizes the risk of raw materials accumulating in one place and causing clogging of the screen holes.

[0029] The screening box 1 has an air outlet on its side, corresponding to the guide column 11 and the screening frame 3. An air suction pipe 12 is installed at the air outlet. The air suction pipe 12 is connected to the negative pressure pump through a pipe. The air suction pipe 12 on the side of the device is connected to the negative pressure pump through the air outlet to continuously suck up the dust in the screening chamber and reduce environmental pollution.

[0030] Reference Figure 1 and Figure 3 As shown, symmetrical limit grooves 31 are provided on the screening frame 3, and limit strips 33 are provided on the screening box 1 at the corresponding opening of the limit grooves 31. The limit grooves 31 and the limit strips 33 slide together. Ball bearings 32 are embedded in the limit grooves 31 and are evenly spaced in the limit grooves 31.

[0031] The screening frame 3 slides in cooperation with the limiting strip 33 on the inner wall of the screening box 1 through the limiting groove 31, ensuring stable motion trajectory; the ball bearings 32 embedded in the limiting groove 31 reduce frictional resistance and improve the smoothness of reciprocating motion.

[0032] Reference Figure 1 and Figure 4As shown, a conveying assembly 15 for the overall screening of auxiliary furnace material is installed at the bottom of the collecting hopper 14. The conveying assembly 15 includes a conveying shaft 16 that is equidistantly rotatably arranged at the bottom of the collecting hopper 14. A conveyor belt 18 is wound around the conveying shaft 16. A conveying motor 17 that drives the conveying shaft 16 to rotate is installed on one side of the collecting hopper 14.

[0033] Through the conveying assembly 15 located at the bottom of the collection hopper 14, the screened fine material falls into the bottom collection hopper 14 and is discharged through the conveying assembly 15. In the conveying assembly 15, the conveying motor 17 drives multiple parallel conveying shafts 16 to rotate, which in turn drives the conveyor belt 18 wrapped around them to continuously transport the fine material to the next process. This can minimize the accumulation of screened raw materials at the bottom of the device during subsequent work, ensuring the smooth progress of subsequent work.

[0034] Working principle:

[0035] During operation, the metallurgical furnace charge to be screened is fed into the screening box 1 through the top discharge hopper 2, and the material enters the screening chamber along the feed inlet. Multiple guide columns 11, staggered at the top of the chamber, guide and disperse the material, preventing localized accumulation and ensuring the furnace charge is evenly spread throughout the screening area.

[0036] During screening, the drive motor 7, fixed to the base frame 13, starts and drives the screening frame 3 to reciprocate laterally via the transmission assembly 6. Specifically, the drive motor 7 drives the transmission disc 8 to rotate, and the protruding column 9 on its outer edge moves in a circular motion and is embedded in the sliding groove of the T-shaped fixing frame 10 on the side of the screening frame 3, converting the rotational motion into the linear reciprocating motion of the screening frame 3. The screening frame 3 slides in cooperation with the limiting strip 33 on the inner wall of the screening box 1 through the limiting groove 31 to ensure stable motion trajectory. The ball bearings 32 embedded in the limiting groove 31 reduce frictional resistance and improve the smoothness of reciprocating motion. The screening screen 4 on the screening frame 3 vibrates with the movement, classifying and screening the furnace material. Fine particles fall through the mesh, while coarse particles remain on the screen surface.

[0037] During the screening process, the side suction pipe 12 of the device is connected to a negative pressure pump through the air outlet to continuously suck up dust in the screening chamber and reduce environmental pollution. The undersized fine material falls into the bottom collection funnel 14 and is discharged through the conveying assembly 15. In the conveying assembly 15, the conveying motor 17 drives multiple parallel conveying shafts 16 to rotate, which in turn drives the conveyor belt 18 wrapped around them to continuously transport the fine material to the next process.

[0038] When the screening screen 4 needs to be replaced, loosen the positioning bolts 5 on the side of the screening frame 3 to release their tight fixing on the screening screen 4, and the screen can be quickly disassembled and replaced to adapt to different particle size requirements.

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A metallurgical furnace charge screening device, comprising a screening box (1), characterized in that, The screening box (1) is provided with a feed inlet at the top, and a discharge funnel (2) is installed at the feed inlet. The screening box (1) is provided with a screening chamber inside, and a screening frame (3) is installed horizontally inside the screening chamber. A screening screen (4) is installed on the screening frame (3). The screening box (1) is fixed on the base frame (13). A transmission component (6) is installed at the top of the base frame (13) to drive the screening frame (3) to screen horizontally and reciprocally. A collection funnel (14) is fixed at the bottom of the screening box (1), and a conveying component (15) to assist in the overall screening of the furnace material is installed at the bottom of the collection funnel (14). A guide column (11) is fixed near the top of the screening chamber. An air outlet is provided on the side of the screening box (1) between the guide column (11) and the screening frame (3). An air suction pipe (12) is installed at the air outlet. The air suction pipe (12) is connected to a negative pressure pump through a pipeline.

2. The metallurgical furnace charge screening device according to claim 1, characterized in that, The guide columns (11) are provided in a plurality of manner, and the plurality of guide columns (11) are arranged alternately in the screening chamber.

3. The metallurgical furnace charge screening device according to claim 1, characterized in that, A positioning bolt (5) is threaded on one side of the screening frame (3), and one end of the positioning bolt (5) is abutted on the outer side of the screening mesh (4).

4. The metallurgical furnace charge screening device according to claim 1, characterized in that, The transmission assembly (6) includes a transmission motor (7) installed at the bottom of the base frame (13). A transmission disc (8) is fixed at the front end of the shaft of the transmission motor (7). A protruding column (9) is provided at the outer edge of the transmission disc (8). A T-shaped fixing frame (10) is fixed on one side of the screening frame (3) near the transmission assembly (6). A sliding groove for the protruding column (9) to slide is provided on the fixing frame (10).

5. The metallurgical furnace charge screening device according to claim 1, characterized in that, The screening frame (3) has symmetrically provided limiting grooves (31), and the screening box (1) has a limiting strip (33) protruding at the opening corresponding to the limiting groove (31). The limiting groove (31) and the limiting strip (33) slide together.

6. A metallurgical furnace charge screening device according to claim 5, characterized in that, The limiting groove (31) is fitted with ball bearings (32), which are evenly spaced in the limiting groove (31).

7. The metallurgical furnace charge screening device according to claim 1, characterized in that, The conveying assembly (15) includes a conveying shaft (16) rotatably disposed at the bottom of the collection funnel (14) at equal intervals, a conveyor belt (18) is wound around the conveying shaft (16), and a conveying motor (17) that drives the conveying shaft (16) to rotate is installed on one side of the collection funnel (14).

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