Scraper blade for grate-layer material layer of sintering machine

Abstract

The utility model belongs to the field of sintering processes in the iron and steel industry, and particularly relates to a grate-layer material layer scraper of a sintering machine, which comprises a main scraper, a movable scraper, a support plate and an adjusting threaded rod. The supporting plate is fixed to the upper edge of one face of the main scraper. The two first fixing plates are located on the two sides of the supporting plate respectively and provided with longitudinal threaded holes. The adjusting threaded rod is longitudinally arranged and penetrates through the threaded hole of the first fixing plate to form threaded fit. The second fixing plate is fixed to the upper portion of the movable scraper and connected to the bottom end of the adjusting threaded rod, and the bottom end of the adjusting threaded rod rotates in the second fixing plate in a limited mode. The movable scraper is located on the lower portion of the side edge of the main scraper, the lower edge of the movable scraper is lower than the lower edge of the main scraper, and the outer edge of the movable scraper exceeds the outer edge of the main scraper. The movable scraping plates are located on the two sides of the main scraping plate, grate-layer materials on the edge of the sintering pallet can be effectively leveled, and abrasion of the grate-layer materials to the main scraping plate is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sintering process in the iron and steel industry, in particular to a scraper for the laying material layer of a sintering machine. Background Art

[0002] The production of sintered ore in the iron and steel industry is an important process in blast furnace smelting. In the process of sintered ore production, laying the bottom material on the sintering machine is an indispensable link in the sintering process. In order to ensure the quality of sintered ore, good air permeability of the sintering machine, and the problem of the bonding of the grate bars of the trolley caused by overburning of the material layer, it is necessary to lay sintered ore with a particle size of 10 - 20 mm and a thickness of 30 - 50 mm on the sintering machine trolley as the sintering bottom material. In the actual production process of sintered ore, due to the edge effect on both sides of the sintering machine trolley, the ventilation rate on both sides is relatively large, resulting in better air permeability of the material layer on both sides of the trolley than that in the middle of the material layer, which will affect the quality of sintered ore and waste the utilization rate of wind energy.

[0003] Due to the influence of the change in the bin level of the upper bunker and the wear of the feeding gate, the feeding is uneven, resulting in the problem of uneven thickness of the bottom material laid on the trolley. Therefore, it is necessary to use a scraper to level the bottom material. Since the sintered ore used as the bottom material is relatively hard, the scraper is severely worn. And to avoid rubbing against the baffle plates on both sides of the trolley, there is a distance of 50 - 80 mm between the scraper and the trolley baffle plates, which further aggravates the wear degree on both sides of the scraper, making the bottom material layer leveled by the scraper show a phenomenon of high on both sides and low in the middle, exacerbating the edge effect and affecting the production of sintered ore. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and to propose a scraper for the laying material layer of a sintering machine, which is applied to the leveling operation of the laying material layer in the sintering and feeding process.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A scraper for the laying material layer of a sintering machine, the scraper is fixedly hoisted above the sintering trolley, and the scraper includes a main scraper, a movable scraper, a support plate, an adjusting threaded rod, a first fixing plate, and a second fixing plate;

[0007] The support plate is fixed to the upper edge of one side of the main scraper;

[0008] There are two first fixing plates, which are respectively located on both sides of the support plate, and the first fixing plate has a longitudinal threaded hole;

[0009] The adjusting threaded rod is longitudinally arranged and forms a threaded fit through the threaded hole of the first fixing plate. The upper end of the adjusting threaded rod has a motor for driving the rotation of the adjusting threaded rod;

[0010] The second fixed plate is fixed to the upper part of the movable scraper. The movable scraper is connected to the bottom end of the adjusting screw rod through the second fixed plate, and the bottom end of the adjusting screw rod is limited to rotate in the second fixed plate.

[0011] The two movable scrapers are respectively located at the lower side positions of the main scraper. And the lower edge of the movable scraper is lower than the lower edge of the main scraper, and the outer edge of the movable scraper extends beyond the outer edge of the main scraper.

[0012] The movable scraper adheres to the main scraper, and the movable scraper is on the back of the main scraper facing the sintering bed material surface.

[0013] As a further preferred solution, a chute is provided along the length direction of the support plate. The first fixed plate is limited in the chute and moves along the chute.

[0014] A horizontal sliding link is also provided in the chute. The first fixed plate also has a horizontal threaded hole. The sliding link passes through the threaded hole and is in threaded cooperation with it. The end of the sliding link has a motor for driving the sliding link to rotate.

[0015] As a further preferred solution, the distance between the bottom of the movable scraper and the trolley surface is 20 - 30 mm, and the distance between the edge of the movable scraper and the trolley baffle is 30 - 50 mm.

[0016] As a further preferred solution, the movable scraper is made of ceramic material, which is more wear-resistant than steel alloy and rubber plate. The sliding scraper can be disassembled and replaced after wear. Beneficial effects

[0017] Compared with the existing technology, the beneficial effects of the present utility model are as follows:

[0018] (1) The movable scrapers are located on both sides of the main scraper, which can effectively level the bed material at the edge of the sintering trolley and reduce the wear of the main scraper by the bed material.

[0019] (2) The movable scraper is connected through a threaded link and a movable link, and can be automatically adjusted horizontally through a motor to change the thickness of the bed material layer on both sides, effectively reducing the edge effect.

[0020] (3) The movable scraper adopts wear-resistant ceramic lining bricks, which are more wear-resistant than steel alloy and rubber plate, and the connection structure is simple, and it is convenient to replace after wear. Description of the drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a front view of the present utility model;

[0023] Figure 3 It is a side view of the present utility model;

[0024] In the figure: main scraper 1, movable scraper 2, support plate 3, adjusting threaded rod 4, first fixing plate 5, second fixing plate 6, sliding link rod 7. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] A scraper for the bottom material layer of a sintering machine. The scraper is fixedly hoisted above the sintering trolley, and the sintering trolley moves towards the scraper. There are trolley baffles on both sides of the scraper. The scraper includes a main scraper 1, a movable scraper 2, a support plate 3, an adjusting threaded rod 4, a first fixing plate 5, and a second fixing plate 6;

[0027] The support plate 3 is fixed to the upper edge of one side of the main scraper 1;

[0028] There are two first fixing plates 5, which are respectively located on both sides of the support plate 3, and the first fixing plate 5 has a longitudinal threaded hole;

[0029] The adjusting threaded rod 4 is longitudinally arranged and passes through the threaded hole of the first fixing plate 5 to form a threaded fit. The upper end of the adjusting threaded rod 4 has a motor for driving the rotation of the adjusting threaded rod 4;

[0030] The second fixing plate 6 is fixed to the upper part of the movable scraper 2. The movable scraper 2 is connected to the bottom end of the adjusting threaded rod 4 through the second fixing plate 6. The bottom end of the adjusting threaded rod 4 is limited in the second fixing plate 6, and can hang the second fixing plate 6 and the movable scraper 2, and the bottom end of the adjusting threaded rod 4 can rotate relative to the second fixing plate 6;

[0031] The two movable scrapers 2 are respectively located at the lower side positions of the two sides of the main scraper 1, and the lower edge of the movable scraper 2 is lower than the lower edge of the main scraper 1, and the outer edge of the movable scraper 2 extends beyond the outer edge of the main scraper 1;

[0032] The movable scraper 2 is attached to the main scraper 1, and the movable scraper 2 is on the back of the main scraper 1 facing the sintered bottom material surface.

[0033] The movable scraper 2 is made of ceramic material.

[0034] The support plate 3 is provided with a chute along the length direction. The first fixing plate 5 is limited in the chute and moves along the chute;

[0035] A horizontal sliding link rod 7 is also provided in the chute. The first fixing plate 5 also has a horizontal threaded hole. The sliding link rod 7 passes through the threaded hole and is in threaded fit with it. The end of the sliding link rod 7 has a motor for driving the rotation of the sliding link rod 7.

[0036] The bottom of the movable scraper 2 is 20 - 30 mm away from the trolley surface, and the edge of the movable scraper 2 is 30 - 50 mm away from the trolley baffle. By adjusting the motor drive on the threaded rod and the sliding link, the lifting and left - right movement of the movable scraper 2 can be achieved.

[0037] As Figure 3 shown, the sintering bed material moves to the left with the sintering trolley. After passing through the scraper, the material surface is leveled. By adjusting the movable scraper, the bed material on both sides of the trolley surface can be effectively leveled, avoiding the problem of missed scraping. Figure 2 As shown, by moving the movable scraper up and down, the thickness of the bed material on both sides of the trolley is controlled, making the thickness on both sides less than that in the middle area, reducing the air permeability on both sides of the trolley and reducing the edge effect.

[0038] The above - mentioned is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A scraper for laying a bottom material layer of a sintering machine, characterized in that: The scraper is fixedly hoisted above the sintering trolley, and comprises a main scraper (1), a movable scraper (2), a support plate (3), an adjusting threaded rod (4), a fixed plate 1 (5), and a fixed plate 2 (6); The support plate (3) is fixed to the upper edge of one side of the main scraper (1); The fixing plates (5) are provided in two pieces, which are respectively located at two sides of the supporting plate (3), and the fixing plates (5) have longitudinal threaded holes; The adjusting threaded rod (4) is arranged longitudinally and penetrates the threaded hole of the fixing plate (5) to form a threaded fit. The upper end of the adjusting threaded rod (4) is provided with a motor for driving the adjusting threaded rod (4) to rotate. The second fixed plate (6) is fixed to the upper part of the movable scraper (2), and the movable scraper (2) is connected to the bottom end of the adjusting threaded rod (4) through the second fixed plate (6), and the bottom end of the adjusting threaded rod (4) is limited to rotate in the second fixed plate (6); The two movable scrapers (2) are respectively located at the lower side of the main scraper (1), and the lower edge of the movable scraper (2) is lower than the lower edge of the main scraper (1), and the outer edge of the movable scraper (2) exceeds the outer edge of the main scraper (1); The movable scraper (2) is attached to the main scraper (1), and the movable scraper (2) is located on the back side of the main scraper (1) facing the sintering base material surface.

2. A scraper for laying the bottom material layer of a sintering machine according to claim 1, characterized in that: The support plate (3) is provided with a slide groove along the length direction, and the fixed plate (5) is limited in the slide groove and moves along the slide groove; A horizontal sliding link (7) is also provided in the slide groove, and the fixing plate (5) also has a horizontal threaded hole. The sliding link (7) passes through the threaded hole and is threadably engaged with the threaded hole. The end of the sliding link (7) has a motor for driving the sliding link (7) to rotate.

3. A scraper for laying the bottom material layer of a sintering machine according to claim 1 or 2, characterized in that: The bottom of the movable scraper (2) is 20-30 mm away from the trolley surface.

4. A scraper for laying the bottom material layer of a sintering machine according to claim 1 or 2, characterized in that: The edge of the movable scraper (2) is 30-50 mm away from the trolley baffle.

5. A scraper for laying the bottom material layer of a sintering machine according to claim 1 or 2, characterized in that: The movable scraper (2) is made of ceramic material.

Images