Sliding sealing device between air bellow and trolley of sintering machine

Abstract

The utility model relates to the technical field of sintering machines in iron and steel smelting systems, in particular to a sliding sealing device between an air bellow and a trolley of a sintering machine, which comprises the trolley and the air bellow, the trolley moves on a track through wheels, the air bellow is positioned below the trolley, and a sliding plate groove is arranged at the bottom of the trolley. Sliding plates are installed in the sliding plate grooves in a hanging mode through first bolts, supports are fixedly connected to the two sides of the top of the air bellow, the supports are connected with a protection box through second bolts, sliding ways are installed in the protection box, and the sliding plates are in sliding connection with the sliding ways. The utility model not only has better sealing effect, but also is stable and durable, and the maintenance period is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machines in a steel smelting system, in particular to a sliding sealing device between a sintering machine bellows and a trolley. Background Art

[0002] In the iron and steel smelting industry, sintered ore is the main raw material that is indispensable for blast furnace pig iron smelting. The process is to mix the powdered iron-containing raw materials with fuel and solvent and transport them to the buffer bin above the sintering machine, and then load them into the trolley through the distributor. The trolley is located above the bellows. A chain belt formed by several trolleys in parallel moves horizontally along the tracks on both sides of the bellows. The bellows under the trolley is connected to the exhaust fan through the flue main pipe. After the fan is started, negative pressure will be generated in the pipeline and the bellows. After the sintering material on the trolley is ignited by the igniter, it will burn from top to bottom under the action of negative pressure. When the trolley moves to the tail of the machine, the combustion ends. The iron material is melted and solidified due to high temperature to form a block of sintered ore. Since the combustion speed is proportional to the air volume, it is necessary to ensure that there is sufficient and stable airflow on the sintering material surface. After the fan flow is determined, the focus of the sintering machine exhaust system is to find ways to reduce air leakage, and the gap between the trolley and the bellows is the main air leakage point of the sintering machine.

[0003] In the development process of sintering machines, the sealing methods between the trolley and the bellows are constantly updated and evolved in different periods, but the general feature is still the sliding contact sealing method. The traditional sliding seal is that the trolley slide and the bellows slide are made of metal materials. In order to reduce wear, grease needs to be continuously added between the slide and the slide. The biggest disadvantage of this device is that the grease consumption is huge and the grease will wrap the trolley material to form oil mud and sand, aggravate the wear of the slide and the slide, shorten the overhaul cycle, and the slide and the slide need to be replaced simultaneously, resulting in a long repair time and a large investment. In recent years, some manufacturers have introduced oil-free flexible seals. Although grease is saved and consumption is reduced, the service life of this device is not as good as that of traditional slides because the flexible material is easily burned or aged in a high temperature environment and is easily worn by falling materials or scratched by sharp objects when sliding. Utility Model Content

[0004] In view of the above problems, the utility model provides a sliding sealing device between a sintering machine wind box and a trolley, which not only has a good sealing effect but is also stable and durable, thus greatly extending the maintenance cycle.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a sliding sealing device between a sintering machine bellows and a trolley, comprising a trolley and a bellows, the trolley moves on a track through wheels, the bellows is located below the trolley, a slide plate groove is provided at the bottom of the trolley, a slide plate is suspended and installed in the slide plate groove by a first bolt, supports are fixedly connected to both sides of the top of the bellows, the supports are connected to a protective box by a second bolt, a slideway is installed in the protective box, and the slide plate is slidably connected to the slideway.

[0006] As a further solution of the present utility model, a first spring is sleeved on the first bolt, and the first spring is compressed between the gap between the slide plate and the top of the slide plate groove. A second spring is sleeved on the second bolt, and the second spring is compressed between the gap between the protection box and the support.

[0007] As a further solution of the present utility model, the slide plate is composed of a flexible wear-resistant material. A back plate is fixedly connected to the top of the slide plate, and threaded holes are provided on the back plate.

[0008] As a further solution of the present utility model, the support includes side plates. A bottom plate and a connecting plate are fixedly connected to the side plates. Threaded holes are provided on the bottom plate and the connecting plate. The bottom plate is fixedly connected to the air box, and the connecting plate is connected to the protection box through a second bolt.

[0009] As a further solution of the present utility model, the protection box is in a groove shape. A limiting block is fixedly connected to the bottom of the protection box, and convex blocks are provided on both sides of the bottom of the protection box.

[0010] As a further solution of the present utility model, the slideway is composed of a plurality of ceramic blocks arranged and fitted in the protection box. An installation hole is provided in the middle of the ceramic block. The installation hole is in an inverted conical shape, and the thickness of the ceramic block is two-thirds of the height of the protection box groove.

[0011] As a further solution of the present utility model, the gap between the ceramic block and the protection box is filled with sealant.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the pressure given by the spring in the present utility model, the slide plate and the slideway can each float up and down within a certain range, ensuring the close fit between the slideway and the slide plate, thereby playing a sealing role. At the same time, restricted by the limiting block, the slideway will not be displaced due to the friction generated when the slide plate moves, ensuring the stability of the device;

[0014] 2. The ceramic slideway used in the present utility model has good wear resistance, strength and smoothness, and does not require maintenance within the overhaul period of the sintering machine; the flexible wear-resistant slide plate used has good adhesion and wear resistance, and can be removed from the production line with the trolley for convenient maintenance, greatly extending the maintenance period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is for the present utility model Figure 1 partial enlarged view of A in;

[0017] Figure 3Schematic diagram of the skateboard structure of the present utility model;

[0018] Figure 4 Schematic sectional view of the skateboard installation of the present utility model;

[0019] Figure 5 Schematic diagram of the support structure of the present utility model;

[0020] Figure 6 Schematic diagram of the protection box structure of the present utility model;

[0021] Figure 7 Schematic sectional view of the protection box of the present utility model;

[0022] Figure 8 Schematic diagram of the ceramic block structure of the present utility model;

[0023] In the figure: 1, trolley; 2, air box; 3, wheels; 4, track; 5, skateboard groove; 6, skateboard; 61, back plate; 7, first bolt; 8, support; 81, side plate; 82, bottom plate; 83, connecting plate; 9, protection box; 91, limiting block; 92, convex block; 10, second bolt; 11, slideway; 111, ceramic block; 112, mounting hole; 12, first spring; 13, second spring; 14, threaded hole. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Refer to Figures 1 to 8 , the sliding sealing device between the sintering machine air box and the trolley includes a trolley 1 and an air box 2. The trolley 1 moves on the track 4 through the wheels 3. The air box 2 is located below the trolley 1. A skateboard groove 5 is provided at the bottom of the trolley 1. A skateboard 6 is suspended and installed in the skateboard groove 5 through a first bolt 7. Both sides of the top of the air box 2 are fixedly connected with a support 8. The support 8 is connected with a protection box 9 through a second bolt 10. A slideway 11 is installed in the protection box 9. The skateboard 6 is slidably connected with the slideway 11.

[0026] Refer to Figure 2 , in order to enable the skateboard 6 and the slideway 11 to float up and down within a certain range respectively to ensure the close fit between the slideway 11 and the skateboard 6, a first spring 12 is sleeved on the first bolt 7, and the first spring 12 is compressed between the skateboard 6 and the top of the skateboard groove 5. A second spring 13 is sleeved on the second bolt 10, and the second spring 13 is compressed between the protection box 9 and the support 8.

[0027] Reference Figure 3 and Figure 4 To keep the skateboard 6 flat, the skateboard 6 is made of a flexible wear-resistant material. A backboard 61 is fixedly connected to the top of the skateboard 6, and a threaded hole 14 is provided on the backboard 61.

[0028] Reference Figure 5 The support 8 includes side plates 81. A bottom plate 82 and a connecting plate 83 are fixedly connected to the side plates 81. Threaded holes 14 are provided on the bottom plate 82 and the connecting plate 83. The bottom plate 82 is fixedly connected to the air box 2, and the connecting plate 83 is connected to the protection box 9 through a second bolt 10.

[0029] Reference Figure 6 and Figure 7 The protection box 9 is in a groove shape. A limiting block 91 is fixedly connected to the bottom of the protection box 9. Protrusions 92 are provided on both sides of the bottom of the protection box 9 to prevent misalignment when the upper and lower floating occurs at the connection of the head and tail of the protection box 9.

[0030] Reference Figure 8 The slideway 11 is composed of a number of ceramic blocks 111 arranged and fitted in the protection box 9. An installation hole 112 is provided in the middle of the ceramic block 111. The installation hole 112 is in an inverted conical shape. The thickness of the ceramic block 111 is two-thirds of the height of the groove in the protection box 9. The space between the ceramic block 111 and the protection box 9 is filled with sealant.

[0031] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sliding sealing device between a sintering machine wind box and a trolley, comprising a trolley (1) and a wind box (2), wherein the trolley (1) moves on a track (4) via wheels (3), and the wind box (2) is located below the trolley (1), characterized in that: The bottom of the trolley (1) is provided with a slide groove (5), a slide groove (6) is suspended and installed in the slide groove (5) via a first bolt (7), supports (8) are fixedly connected to both sides of the top of the bellows (2), the supports (8) are connected to a protection box (9) via a second bolt (10), a slideway (11) is installed in the protection box (9), and the slideway (6) is slidably connected to the slideway (11).

2. The sliding sealing device between the sintering machine wind box and the trolley according to claim 1, characterized in that: A first spring (12) is sleeved on the first bolt (7), and the first spring (12) is compressed between the slide plate (6) and the top of the slide plate groove (5). A second spring (13) is sleeved on the second bolt (10), and the second spring (13) is compressed between the gap between the protection box (9) and the support (8).

3. The sliding sealing device between the sintering machine wind box and the trolley according to claim 2, characterized in that: The slide plate (6) is made of a flexible wear-resistant material, and a back plate (61) is fixedly connected to the top of the slide plate (6), and a threaded hole (14) is provided on the back plate (61).

4. The sliding sealing device between the sintering machine wind box and the trolley according to claim 3, characterized in that: The support (8) comprises a side plate (81), to which a bottom plate (82) and a connecting plate (83) are fixedly connected, and threaded holes (14) are provided on the bottom plate (82) and the connecting plate (83). The bottom plate (82) is fixedly connected to the bellows (2), and the connecting plate (83) is connected to the protection box (9) via a second bolt (10).

5. The sliding sealing device between the sintering machine wind box and the trolley according to claim 4, characterized in that: The protection box (9) is groove-shaped, the bottom of the protection box (9) is fixedly connected to a limit block (91), and protrusions (92) are provided on both sides of the bottom of the protection box (9).

6. The sliding sealing device between the sintering machine wind box and the trolley according to claim 5, characterized in that: The slideway (11) is composed of a plurality of ceramic blocks (111) arranged and embedded in a protection box (9); a mounting hole (112) is provided in the middle of the ceramic block (111); the mounting hole (112) is in an inverted cone shape; and the thickness of the ceramic block (111) is two thirds of the height of the groove in the protection box (9).

7. The sliding sealing device between the sintering machine wind box and the trolley according to claim 6, characterized in that: The space between the ceramic block (111) and the protection box (9) is filled with sealant.

Images