Steel smelting slag blocking device

Abstract

The utility model discloses a slag blocking device for steel smelting, and relates to the technical field of steel smelting. The device comprises a treatment pipeline and a supporting base, the lower end of the treatment pipeline is fixed to the supporting base through supporting columns. The molten steel conveying direction in the treatment pipeline is from left to right; a residue intercepting mechanism is arranged on the treatment pipeline; the residue intercepting mechanism comprises a first-stage residue intercepting net and a second-stage residue intercepting net which are correspondingly inserted into the left side and the right side of the treatment pipeline from top to bottom; the slag blocking aperture of the second-stage slag blocking net is smaller than that of the first-stage slag blocking net; connecting rods are fixed to the upper end of the first-stage slag blocking net and the upper end of the second-stage slag blocking net. The two connecting rods are connected through a cross beam; supporting rods are fixed to the right side of the first-stage slag blocking net and the right side of the second-stage slag blocking net. The residue cleaning device has the beneficial effects that residues left on the residue intercepting mechanism can be conveniently cleaned, the cleaning efficiency is high, the operation is convenient and fast, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of steel smelting, in particular to a slag blocking device for steel smelting. Background Art

[0002] Modern ironmaking is predominantly done in blast furnaces, with some using direct reduction and electric furnace processes. Blast furnace ironmaking involves reducing iron ore in a blast furnace, melting it, and producing pig iron. This process is simple to operate, requires low energy consumption, is cost-effective, and can be mass-produced. However, during steelmaking, slag can be contaminated with molten steel, making it difficult to intercept and reducing production quality. Therefore, timely interception and removal of slag from the molten steel is crucial to ensure high-quality production.

[0003] However, since the residue can easily solidify on the slag blocking net, the current slag blocking device requires manual cleaning of the slag blocking net from time to time, which has low cleaning efficiency, is not convenient to operate, and poses a safety hazard. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a steel smelting slag intercepting device in response to the above-mentioned technical deficiencies, which can conveniently clean the residue remaining on the residue intercepting mechanism, has high cleaning efficiency, is easy to operate and is highly safe.

[0005] The technical solution adopted by the utility model is to provide a slag intercepting device for steel smelting, comprising a processing pipe and a support base; the lower end of the processing pipe is fixed to the support base by a support; the direction of molten steel transmission in the processing pipe is from left to right; a slag intercepting mechanism is provided on the processing pipe;

[0006] The residue intercepting mechanism includes a first-level slag intercepting net and a second-level slag intercepting net which are respectively plugged into the left and right sides of the processing pipeline from top to bottom; the slag intercepting aperture of the second-level slag intercepting net is smaller than the slag intercepting aperture of the first-level slag intercepting net; connecting rods are fixed to the upper ends of the first-level slag intercepting net and the upper ends of the second-level slag intercepting net; the two connecting rods are connected by a crossbeam; support rods are fixed to the right side of the first-level slag intercepting net and the right side of the second-level slag intercepting net; the length direction of the support rod is parallel to the plug-in direction of the first-level slag intercepting net and the second-level slag intercepting net; the upper ends of the two support rods are connected by a mounting rod; the crossbeam is slidably sleeved on the outside of the support rod; a telescope is fixed on the mounting rod; the telescopic end of the telescope is fixed to the crossbeam; the telescopic direction of the telescope is parallel to the length direction of the support rod; a slag net cleaning mechanism is provided on the support rod;

[0007] The slag net cleaning mechanism includes a brush head fixed at the bottom of the support rod; brush wires are distributed on the brush head; the brush wires correspond to the right side of the first-level slag net and the right side of the second-level slag net respectively.

[0008] To further optimize the technical solution, at least two residue intercepting mechanisms are provided on the processing pipeline of a steel smelting slag intercepting device.

[0009] To further optimize the technical solution, the upper surface of a processing pipe of a steel smelting slag retaining device is inclined in the front-to-back direction.

[0010] To further optimize the technical solution, the pillars of a steel smelting slag retaining device are respectively arranged at the lower end of the processing pipeline and at positions corresponding to the first-level slag retaining net and the second-level slag retaining net.

[0011] The beneficial effects of the present invention are:

[0012] 1. The processing pipeline can allow molten steel to flow in. After the residue is intercepted by the residue intercepting mechanism, the molten steel is filtered to ensure the quality of the outflowing molten steel. The direction of molten steel transmission in the processing pipeline is from left to right. The first-level slag intercepting net and the second-level slag intercepting net are respectively arranged on the left and right sides of the processing pipeline. The slag intercepting aperture of the second-level slag intercepting net is smaller than the slag intercepting aperture of the first-level slag intercepting net, so that the molten steel can be filtered by the first-level slag intercepting net and the second-level slag intercepting net in turn when flowing through the processing pipeline. In addition, through the setting of improving the filtering accuracy by grades, while ensuring the filtering accuracy, it can also avoid the filtering accuracy being set too high at one time and causing excessive obstruction to the fluidity of the molten steel.

[0013] 2. The first-level slag net and the second-level slag net are correspondingly plugged into the processing pipeline from top to bottom. The length direction of the support rod is parallel to the plug-in direction of the first-level slag net and the second-level slag net, and the telescopic direction of the telescope is parallel to the length direction of the support rod. The telescopic device can drive the crossbeam to pull the first-level slag net and the second-level slag net up and down through the telescopic device, thereby realizing the switching of moving the first-level slag net and the second-level slag net out of and into the processing pipeline. Combined with the brush wire fixed on the brush head at the bottom of the support rod, the first-level slag net and the second-level slag net can be cleaned from the back of the right side during the process of removing them, thereby realizing the convenient removal of residues on the first-level slag net and the second-level slag net. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a structural schematic diagram of a working state of the residue interception mechanism.

[0016] In the figure, 1. processing pipe; 2. support base; 3. primary slag retaining net; 4. secondary slag retaining net; 5. connecting rod; 6. crossbeam; 7. support rod; 8. mounting rod; 9. telescopic device; 10. brush head; 11. brush wire; 12. support. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] like Figure 1As shown, a slag intercepting device for steel smelting includes a processing pipe 1 and a support base 2; the lower end of the processing pipe 1 is fixed to the support base 2 by a support 12; the direction of molten steel transmission in the processing pipe 1 is from left to right; and a slag intercepting mechanism is provided on the processing pipe 1;

[0019] like Figure 1-2 As shown, the residue intercepting mechanism includes a first-level slag blocking net 3 and a second-level slag blocking net 4 which are respectively plugged into the left and right sides of the processing pipe 1 from top to bottom; the slag blocking aperture of the second-level slag blocking net 4 is smaller than the slag blocking aperture of the first-level slag blocking net 3; a connecting rod 5 is fixed to the upper end of the first-level slag blocking net 3 and the upper end of the second-level slag blocking net 4; the two connecting rods 5 are connected by a crossbeam 6; a support rod 7 is fixed to the right side of the first-level slag blocking net 3 and the right side of the second-level slag blocking net 4; the length direction of the support rod 7 is parallel to the plug-in direction of the first-level slag blocking net 3 and the second-level slag blocking net 4; the upper ends of the two support rods 7 are connected by a mounting rod 8; the crossbeam 6 is slidably sleeved on the outside of the support rod 7; a telescope 9 is fixed on the mounting rod 8; the telescopic end of the telescope 9 is fixed to the crossbeam 6; the telescopic direction of the telescope 9 is parallel to the length direction of the support rod 7; a slag net cleaning mechanism is provided on the support rod 7;

[0020] like Figure 1 As shown, the slag net cleaning mechanism includes a brush head 10 fixed to the bottom of the support rod 7; brush wires 11 are distributed on the brush head 10; the brush wires 11 correspond to the right side of the first-level slag net 3 and the right side of the second-level slag net 4 respectively.

[0021] The molten steel produced by smelting is injected from the left end of the processing pipe 1 and flows out from the right end. When the molten steel flows, it first passes through the first-level slag screen 3 to intercept the larger residue mixed in the molten steel. The molten steel then continues to flow along the processing pipe 1. When passing through the second-level slag screen 4, the smaller residue is intercepted, thereby ensuring the quality of the molten steel that finally flows out.

[0022] As the molten steel is continuously intercepted, residues will remain on the surface of the primary slag screen 3 and the secondary slag screen 4, as well as inside the processing pipe 1. At this time, the crossbeam 6 can be driven by the action of the telescopic device 9 to pull the primary slag screen 3 and the secondary slag screen 4 upward. Figure 2As shown, as the first-level slag net 3 and the second-level slag net 4 move upward to release the interception state of the inside of the treatment pipe 1, the inside of the treatment pipe 1 can be unblocked, which is convenient for cleaning the residue inside the treatment pipe 1 (such as flushing with clean water). The residue remaining on the surface of the first-level slag net 3 and the second-level slag net 4, on the one hand, will be blocked by the inner wall of the treatment pipe 1 and separated by the upward movement of the two. On the other hand, when the first-level slag net 3 and the second-level slag net 4 move upward, the brush wire 11 will clean both from the right back of the two (the brush wire 11 is made of high-temperature resistant metal material), so as to realize the convenient removal of the residue on the first-level slag net 3 and the second-level slag net 4, thereby ensuring the convenient cleaning effect of the first-level slag net 3 and the second-level slag net 4.

[0023] In the above process, the reason why the brush wire 11 is used to clean from the right back of the first-level slag blocking net 3 and the second-level slag blocking net 4 instead of the left front is because the residue remaining on the left surface of the two is blocked by the front of the brush wire 11 and may be stuffed into the mesh of the first-level slag blocking net 3 and the second-level slag blocking net 4, which will increase the blockage. If cleaning from the right back, the brush wire 11 can penetrate the mesh from the right side and push away the residue remaining on the left surface of the two smoothly, avoiding the residue from being stuffed into the mesh, thereby improving the cleaning effect of the residue.

[0024] After cleaning is completed, the telescopic end of the telescopic device 9 is extended to return the first-level slag blocking net 3 and the second-level slag blocking net 4 to the intercepting position inside the processing pipeline 1, and the residue can be intercepted again. The entire residue cleaning process does not require manual cleaning, which improves efficiency and safety.

[0025] like Figure 1-2 As shown, there are at least two residue interception mechanisms on the processing pipeline 1. The two residue interception mechanisms can be cleaned alternately. For example, when one residue interception mechanism is being cleaned, the other residue interception mechanism can continue to intercept the slag on the molten steel, thereby improving the processing efficiency of the molten steel.

[0026] The upper surface of the treatment pipe 1 is inclined in the front-to-back direction. By inclining the upper surface of the treatment pipe 1, the residue removed from the outside of the treatment pipe 1 by the primary slag screen 3 and the secondary slag screen 4 can fall smoothly from the surface of the treatment pipe 1, thereby preventing a large amount of residue from accumulating on the surface of the treatment pipe 1.

[0027] like Figure 1-2 As shown, pillars 12 are respectively installed at the lower end of the treatment pipeline 1 at positions corresponding to the first and second slag screens 3 and 4. Since the position where the residue is intercepted on the treatment pipeline 1 is subject to greater pressure, the installation of pillars 12 there can effectively reinforce the treatment pipeline 1 and ensure its durability.

[0028] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A slag retaining device for steel smelting, characterized by: The invention comprises a processing pipe (1) and a supporting base (2); the lower end of the processing pipe (1) is fixed to the supporting base (2) via a support (12); the direction of molten steel transmission in the processing pipe (1) is from left to right; and a residue intercepting mechanism is provided on the processing pipe (1); The residue intercepting mechanism comprises a first-level slag intercepting net (3) and a second-level slag intercepting net (4) which are respectively inserted into the left and right sides of the processing pipeline (1) from top to bottom; the slag intercepting aperture of the second-level slag intercepting net (4) is smaller than the slag intercepting aperture of the first-level slag intercepting net (3); the upper ends of the first-level slag intercepting net (3) and the upper ends of the second-level slag intercepting net (4) are both fixed with connecting rods (5); the two connecting rods (5) are connected by a crossbeam (6); the right side of the first-level slag intercepting net (3) and the right side of the second-level slag intercepting net (4) are both fixed with supporting rods (7 ); the length direction of the support rod (7) is parallel to the plug-in direction of the primary slag blocking net (3) and the secondary slag blocking net (4); the upper ends of the two support rods (7) are connected by a mounting rod (8); the crossbeam (6) is slidably sleeved on the outside of the support rod (7); a telescopic device (9) is fixed on the mounting rod (8); the telescopic end of the telescopic device (9) is fixed to the crossbeam (6); the telescopic direction of the telescopic device (9) is parallel to the length direction of the support rod (7); a slag blocking net cleaning mechanism is provided on the support rod (7); The slag screen cleaning mechanism comprises a brush head (10) fixed to the bottom of the support rod (7); brush wires (11) are distributed on the brush head (10); the brush wires (11) correspond to the right side of the first-level slag screen (3) and the right side of the second-level slag screen (4), respectively.

2. The slag retaining device for steel smelting according to claim 1, characterized in that: At least two residue intercepting mechanisms are provided on the processing pipeline (1).

3. The slag retaining device for steel smelting according to claim 1, characterized in that: The upper surface of the processing pipe (1) is inclined along the front-back direction.

4. The slag retaining device for steel smelting according to claim 1, characterized in that: The pillars (12) are respectively arranged at positions corresponding to the first-level slag blocking net (3) and the second-level slag blocking net (4) at the lower end of the processing pipeline (1).

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