A flexible sealing device for preventing air leakage between two side guardrails of a sintering trolley

Abstract

The present invention discloses a flexible sealing device for preventing air leakage between two side fences of a sintering trolley, characterized in that it comprises a soft magnetic strip and fixing bolts, the front side of the soft magnetic strip is fixed to the edge of the rear end outer wall of the front trolley side fence of the front sintering trolley by fixing bolts; 3-6 external pulling devices are evenly distributed on the outer wall of the soft magnetic strip along its length direction, the external pulling device is composed of a fixed block, a tension spring and a positioning rod, the fixed block is fixedly arranged at the front end of the outer wall of the soft magnetic strip, the positioning rod is fixedly arranged at the rear end of the outer wall of the soft magnetic strip, and the two ends of the tension spring are respectively fixedly connected to the outer end of the fixed block and the outer end of the positioning rod. The present invention has a simple structure and is easy to use. It is installed on the outer walls of the side fences on both sides of the rear end of each sintering trolley, so that automatic sealing is achieved between the front and rear sintering trolleys, and the sealing effect is good, which reduces the production cost and improves the sintering quality.

Description

Technical Field

[0001] The invention relates to an improvement of a sintering trolley, belonging to the technical field of sintering machines, and in particular to a flexible sealing device for preventing air leakage between two side guardrails of a sintering trolley. Background Art

[0002] Using a sintering machine to complete the sintering process is a key task in the steel industry, providing high-quality raw materials for steel smelting. The process involves mixing ore powder, fuel, and other additives, spreading them flat across all the sintering trolleys in the sintering machine, and then igniting them. Air is drawn from the bottom, causing the powdered material to burn inside the sintering trolleys to produce lump sintered ore. Currently, sintering trolleys are generally connected by extrusion. This method has the disadvantage of allowing gaps between the side panels of adjacent sintering trolleys. During the sintering process, outside air can enter the sintering trolley cavity through this gap, causing air leakage. This air, being relatively low in temperature, has not been heated by the material bed and, upon entering, dilutes the heat in the combustion zone, reducing the thermal efficiency of the fuel. Furthermore, the large amount of cold air entering the material bed rapidly cools the sintered material, increasing the probability of vitreous formation, reducing the strength of the sintered ore, and seriously affecting the sintering quality. The side air leakage of the sintering machine accounts for the largest proportion among many air leaks. It is mainly because the sintering trolley runs in a high-temperature environment for a long time and is neglected in maintenance, which causes the side railings of the sintering trolley to be seriously deformed and form gaps. The current main solution is to replace the sintering trolley, which increases production costs. In addition, the sealing effect is poor because the two sintering trolleys are only sealed end to end. Summary of the Invention

[0003] The object of the present invention is to provide a flexible sealing device for preventing air leakage between two side panels of a sintering trolley, which has a simple structure, low cost, is easy to use, can realize automatic sealing, and has a good sealing effect.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a flexible sealing device for preventing air leakage between the two car side fences for a sintering trolley, characterized in that: it includes a soft magnetic strip and a fixing bolt, the front side of the soft magnetic strip is fixed to the edge of the rear end outer wall of the front trolley side fence of the front sintering trolley by a fixing bolt, the length of the soft magnetic strip is adapted to the height of the front trolley side fence, and the width of the soft magnetic strip is adapted to the distance between the front trolley side fence of the front sintering trolley and the rear trolley side fence of the rear sintering trolley; the outer wall of the soft magnetic strip is evenly distributed along its length direction with 3 -6 external pulling devices, the external pulling device is composed of a fixed block, a tension spring and a positioning rod. The fixed block is fixedly arranged at the front end of the outer wall of the soft magnetic strip, and the positioning rod is fixedly arranged at the rear end of the outer wall of the soft magnetic strip. The two ends of the tension spring are fixedly connected to the outer end of the fixed block and the outer end of the positioning rod respectively. When the soft magnetic strip is in a free state, all the tension springs rely on their own tension to bend the soft magnetic strip into an arc in the width direction. When the rear end of the soft magnetic strip hits the rear trolley side railing of the rear sintering trolley, the self-magnetic force of the soft magnetic strip overcomes the tension of the tension spring and is adsorbed on the outer side wall of the rear trolley side railing of the rear sintering trolley.

[0005] A high-temperature resistant sealing cotton strip is fixedly provided in the middle of the inner side wall of the soft magnetic strip along the length direction, and the high-temperature resistant sealing cotton strip is embedded in the gap between the front trolley side railing of the front sintering trolley and the rear trolley side railing of the rear sintering trolley.

[0006] The width of the soft magnetic strip is 10 cm, and its length is 5 cm shorter than the height of the front trolley side railing.

[0007] The beneficial effects of the present invention are: simple structure, easy to use, installed on the outer walls of the side rails on both sides of the rear end of each sintering trolley, so as to achieve automatic sealing between the front and rear sintering trolleys, and the sealing effect is good, which reduces production costs and improves sintering quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the present invention in an adsorption state;

[0009] Figure 2 It is a schematic top view of the structure of the present invention under the tension of the tension spring;

[0010] Figure 3 A side view schematic diagram of the present invention in an adsorption state on two sintering trolleys;

[0011] Figure 4 This is a top view schematic diagram of the present invention in the adsorption state on two sintering trolleys.

[0012] In the figure: 1. soft magnetic strip; 2. fixing bolt; 3. fixing block; 4. tension spring; 5. positioning rod; 6. high-temperature resistant sealing cotton strip; 7. front sintering trolley; 8. rear sintering trolley; 9. front trolley side railing; 10. rear trolley side railing. DETAILED DESCRIPTION

[0013] Reference Figure 1 、 Figure 2 The present invention was made. Figure 3 、 Figure 4 Install and use the present invention.

[0014] The flexible sealing device for preventing air leakage between the two side fences of a sintering trolley is characterized in that it includes a soft magnetic strip 1 and a fixing bolt 2. The front side of the soft magnetic strip 1 is fixed to the edge of the rear end outer wall of the front trolley side fence 9 of the front sintering trolley 7 by the fixing bolt 2. The length of the soft magnetic strip 1 is adapted to the height of the front trolley side fence 9. The width of the soft magnetic strip 1 is adapted to the distance between the front trolley side fence 9 of the front sintering trolley 7 and the rear trolley side fence 10 of the rear sintering trolley 8. The outer wall of the soft magnetic strip 1 is evenly distributed with 3-6 external pulling devices along its length direction. The soft magnetic strip 1 is arranged in a manner that is consistent with the embodiment of the present invention, and is composed of a fixed block 3, a tension spring 4 and a positioning rod 5. The fixed block 3 is fixedly arranged at the front end portion of the outer wall of the soft magnetic strip 1, and the positioning rod 5 is fixedly arranged at the rear end portion of the outer wall of the soft magnetic strip 1. The two ends of the tension spring 4 are fixedly connected to the outer end of the fixed block 3 and the outer end of the positioning rod 5 respectively. When the soft magnetic strip 1 is in a free state, all the tension springs 4 rely on their own tension to bend the soft magnetic strip 1 into an arc in the width direction. When the rear end portion of the soft magnetic strip 1 hits the rear trolley side fence 10 of the rear sintering trolley 8, the self-magnetic force of the soft magnetic strip 1 overcomes the tension of the tension spring 4 and is adsorbed on the outer wall of the rear trolley side fence 10 of the rear sintering trolley 8.

[0015] A high-temperature resistant sealing cotton strip 6 is fixedly provided in the middle of the inner side wall of the soft magnetic strip 1 along the length direction, and the high-temperature resistant sealing cotton strip 6 is embedded in the gap between the front trolley side fence 9 of the front sintering trolley 7 and the rear trolley side fence 10 of the rear sintering trolley 8.

[0016] The width of the soft magnetic strip 1 is 10 cm, and its length is 5 cm shorter than the height of the front trolley side fence 9. For example, if the height of the side fence of the on-site sintering trolley is 100 cm, the length of the soft magnetic strip 1 is set to 95 cm.

[0017] When installing and using the present invention, two of the present invention are symmetrically installed on each sintering trolley, and the present invention is fixedly installed at the edge of the outer wall at the rear end of the front trolley side fence 9 of the front sintering trolley 7. The length of the soft magnetic strip 1 is adapted to the height of the front trolley side fence 9. During installation, the lower end of the soft magnetic strip 1 is flush with the bottom of the front trolley side fence 9, and the front side of the soft magnetic strip 1 covers the edge of the outer wall at the rear end of the front trolley side fence 9 and is firmly fixed with a plurality of fixing bolts 2. At the same time, the length of the positioning rod 5 is greater than the length of the fixing block 3, so that the axis of the tension spring 4 forms a certain angle with the plane where the soft magnetic strip 1 is located. When the soft magnetic strip 1 is in a free state without contact with the rear trolley side fence 10, the soft magnetic strip 1 is bent outward under the action of all the tension springs 4. After all the sintering trolleys are loaded with materials, the rear sintering trolley 8 will move forward under the power of the sintering machine and push the front sintering trolley 7 forward as well. When the front end of the rear sintering trolley 8 is close to the rear end of the front sintering trolley 7, the front end of the rear trolley side fence 10 will be inserted into the inner side of the soft magnetic strip 1 at the rear end of the front trolley side fence 9. The soft magnetic strip 1 will overcome the tension of the tension spring 4 and thus be adsorbed on the front side wall of the rear sintering trolley 8 through its own magnetic force. At the same time, the high-temperature resistant sealing cotton strip 6 is embedded in the gap between the front trolley side fence 9 and the rear trolley side fence 10, playing a sealing role and preventing the gap between the front trolley side fence 9 and the rear trolley side fence 10 from leaking air during the sintering process. After sintering is completed, if the rear sintering trolley 8 is separated from the front sintering trolley 7, the soft magnetic strip 1 will return to its outwardly bent state and wait for the next sealing work.

Claims

1. A flexible sealing device for preventing air leakage between two side guardrails of a sintering trolley, characterized in that: The invention comprises a soft magnetic strip (1) and a fixing bolt (2), wherein the front side edge of the soft magnetic strip (1) is fixed to the edge of the rear end outer wall of the front trolley side fence (9) of the front sintering trolley (7) by the fixing bolt (2), the length of the soft magnetic strip (1) is adapted to the height of the front trolley side fence (9), and the width of the soft magnetic strip (1) is adapted to the spacing between the front trolley side fence (9) of the front sintering trolley (7) and the rear trolley side fence (10) of the rear sintering trolley (8); 3 to 6 external pulling devices are evenly distributed on the outer wall of the soft magnetic strip (1) along its length direction, and the external pulling device is composed of a fixing block (3), a tension spring (4) and a positioning rod (5). The fixed block (3) is fixedly arranged at the front end portion of the outer wall of the soft magnetic strip (1), the positioning rod (5) is fixedly arranged at the rear end portion of the outer wall of the soft magnetic strip (1), and the two ends of the tension spring (4) are respectively fixedly connected to the outer end of the fixed block (3) and the outer end of the positioning rod (5). When the soft magnetic strip (1) is in a free state, all the tension springs (4) use their own tension to bend the soft magnetic strip (1) into an arc in the width direction thereof. When the rear end portion of the soft magnetic strip (1) hits the rear trolley side guardrail (10) of the rear sintering trolley (8), the self-magnetic force of the soft magnetic strip (1) overcomes the tension of the tension spring (4) and is adsorbed on the outer side wall of the rear trolley side guardrail (10) of the rear sintering trolley (8).

2. A flexible sealing device for preventing air leakage between two side guardrails of a sintering trolley according to claim 1, characterized in that: A high temperature resistant sealing cotton strip (6) is fixedly provided in the middle of the inner side wall of the soft magnetic strip (1) along the length direction, and the high temperature resistant sealing cotton strip (6) is embedded in the gap between the front trolley side guardrail (9) of the front sintering trolley (7) and the rear trolley side guardrail (10) of the rear sintering trolley (8).

3. A flexible sealing device for preventing air leakage between two side guardrails of a sintering trolley according to claim 1, characterized in that: The soft magnetic strip (1) has a width of 10 cm and a length 5 cm shorter than the height of the front trolley side rail (9).

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