Material preheating device of sintering machine trolley

Abstract

The utility model provides a sintering machine trolley material preheating device which comprises a stock bin, a discharging assembly, a trolley and a heating assembly, the input end of the discharging assembly is in butt joint with the discharging end of the stock bin, the trolley is located below the output end of the discharging assembly, the trolley is located within the heating range of the heating assembly, and the discharging assembly comprises a round roller and a guide roller which are rotationally arranged. The upper portion of the round roller extends into the discharging end of the stock bin, and the guide roller is located below the side of the round roller. Steam is introduced into the base, the hollow pipe is used for discharging steam, the steam is discharged from the hollow pipe, the hollow pipe is arranged in the trolley, materials in the stock bin fall onto the round roller through the discharging end, then fall onto the guide roller from the round roller and finally fall into the trolley, the hollow pipe is covered with the materials, and the materials are heated by the steam discharged from the hollow pipe. And the steam is diffused from the material, so that the problem that the temperature is too low when the material is fluffy is solved.

Description

Technical Field

[0001] The utility model relates to the field of steel smelting, in particular to a sintering machine trolley material preheating device. Background Art

[0002] In the sintering process, the most critical indicator affecting the production quality is the air permeability of the material on the sintering machine trolley. Through scientific and practical research, the sintering of materials on the sintering trolley is that the sintering material layer is divided into five layers during the sintering process, namely the sintering ore layer, preheating layer, drying layer, over-wet layer and combustion layer. In addition to factors such as material structure ratio and moisture content of the mixture, the thickness of the over-wet layer is what affects the air permeability of the sintering material layer.

[0003] The factor that influences the formation of a wet layer during sintering is the mixture temperature. In principle, the mixture temperature should be controlled above the "dew point" to reduce the thickness of the wet layer and thereby improve the permeability of the sintered material layer. (Dew point definition: The dew point temperature during sintering is typically between 50-60°C. This temperature range refers to the temperature at which water vapor in the gas phase begins to condense and has a significant impact on the sintering process. The dew point temperature directly affects the condensation of water during sintering, which in turn affects the permeability of the material layer and the sintering effect. For example, a higher dew point temperature may damage the small balls at the bottom of the material layer, obstructing airflow and worsening the permeability of the sintered material layer.)

[0004] In addition, different studies and practices also support this temperature range. For example, multiple sources mention that the dew point temperature is 55°C, and the general range is 50-60°C. However, in the actual production process, due to the influence of heat loss, heat loss and other factors, the temperature of the mixed material needs to be further increased. It must be controlled at around 80°C to reduce the impact of the over-wet layer on the permeability of the sintered material layer before the sintering cloth and materials enter the sintering link.

[0005] How to preheat the material while loosening it needs to be solved. Utility Model Content

[0006] The utility model aims to provide a sintering machine trolley material preheating device, which solves the problem that the temperature of the material is too low when it is fluffy.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The utility model provides a sintering machine trolley material preheating device, comprising a silo, a material discharge assembly, a trolley and a heating assembly. The input end of the material discharge assembly is connected to the material discharge end of the silo, the trolley is located below the output end of the material discharge assembly, and the trolley is located within the heating range of the heating assembly.

[0009] The unloading assembly includes a rotatable round roller and a guide roller, the upper portion of the round roller extends into the interior of the discharge end of the silo, and the guide roller is located below the side of the round roller;

[0010] The circular roller and the guide roller are located above the trolley;

[0011] The heating assembly includes a crossbeam, a base and a hollow tube, wherein the base is arranged on the crossbeam, the base is arranged in the trolley, and the hollow tube is inserted into the base;

[0012] Steam is passed through the base, and the hollow tube is used for discharging steam.

[0013] Optionally, the plurality of guide rollers are arranged at intervals, and the plurality of guide rollers are distributed on the same inclined plane.

[0014] Furthermore, the distribution width of the plurality of guide rollers is greater than the diameter of the round roller.

[0015] Optionally, the heating assembly further includes a connecting rod, with two ends of the connecting rod respectively connected to the beam and the base.

[0016] Optionally, the heating component further includes an air pipe, the air pipe is communicated with the base, and the air pipe is externally connected to a steam source.

[0017] Optionally, a plurality of the hollow tubes are arranged on the base, and the plurality of the hollow tubes are divided into two upper and lower rows and arranged on the base.

[0018] Furthermore, the hollow tubes in the upper row and the hollow tubes in the lower row are staggered.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a sintering machine trolley material preheating device. Steam comes out of a hollow tube, the hollow tube is inside the trolley, and the material in the hopper falls onto a round roller through a discharge end. The material then falls from the round roller to a guide roller, and finally falls into the trolley. The material covers the hollow tube. The steam coming out of the hollow tube heats the material, and the steam is emitted from the material, thereby solving the problem of too low temperature of the material when it is fluffy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0022] Figure 1This is a side view of a sintering machine trolley material preheating device according to a preferred embodiment of the utility model;

[0023] Figure 2 yes Figure 1 A front view of the trolley shown;

[0024] Figure 3 It is an enlarged schematic diagram of two adjacent layers of hollow tubes.

[0025] The description of the accompanying drawings is as follows:

[0026] 1. Material bin; 2. Material unloading assembly; 3. Trolley; 4. Heating assembly; 21. Round roller;

[0027] 22. Guide roller; 41. Crossbeam; 42. Base; 43. Hollow tube; 44. Connecting rod; 45. Air pipe. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1 and Figure 2 and Figure 3As shown, it includes a silo 1, a feeding assembly 2, a trolley 3 and a heating assembly 4. The silo 1 is loaded with materials from the inlet end, the materials are mixed in the silo 1, and the materials are discharged from the discharge end of the silo 1. The discharge end of the silo 1 can be closed and opened. The input end of the feeding assembly 2 is connected to the discharge end of the silo 1. The materials come out from the discharge end of the silo 1 and then enter the input end of the feeding assembly 2. The materials finally come out from the output end of the feeding assembly 2. The trolley 3 is located below the output end of the feeding assembly 2. The materials coming out from the output end of the feeding assembly 2 enter the trolley 3. The trolley 3 is located within the heating range of the heating assembly 4. The materials are covered on the heating assembly 4. The steam coming out of the heating assembly 4 is used to heat the materials.

[0032] The unloading component 2 includes a rotatable round roller 21 and a guide roller 22. The upper part of the round roller 21 extends to the inside of the discharge end of the silo 1. The material coming out of the silo 1 accumulates on the upper part of the round roller 21. The round roller 21 rotates all the time, and the material falls downward with the rotation of the round roller 21. The guide roller 22 is located at the lower side of the round roller 21. Most of the material falling as the round roller 21 rotates falls onto the guide roller 22, and a small part falls directly into the trolley 3. Most of the material falling on the guide roller 22 falls into the trolley 3 after the guide roller 22 rotates. In this way, the material is dispersed and falls into the trolley 3 many times in the process of falling into the trolley 3, and the material will not be directly accumulated together.

[0033] The round roller 21 and the guide roller 22 are located above the trolley 3 so that the materials coming out of the silo 1 can fall into the trolley 3 .

[0034] The heating assembly 4 includes a crossbeam 41, a base 42 and a hollow tube 43. The base 42 is arranged on the crossbeam 41. The position of the base 42 can be raised or lowered. The base 42 is arranged in the trolley 3. The base 42 has no contact with the trolley 3. The hollow tube 43 is inserted into the base 42. The extension direction of the hollow tube 43 is consistent with the length direction of the trolley 3. The hollow tube 43 heats the material through heat transfer.

[0035] Steam is passed through the base 42, and the hollow tube 43 is used to discharge steam. The hollow tube 43 is parallel to the bottom of the trolley 3 and has no contact with the trolley 3. The material falls on the hollow tube 43 to prevent the material from directly accumulating on the bottom of the trolley 3. In this way, the hollow tube 43 has a fluffy effect on the material.

[0036] After a set amount of material is stored in the trolley 3, the base 42 rises and the hollow tube 43 rises accordingly until the base 42 and the hollow tube 43 are higher than the upper surface of the trolley 3. The trolley 3 is transported away, and the empty trolley 3 is moved into the heating range of the heating component 4. Then the base 42 and the hollow tube 43 descend to the set height, and the material enters the trolley 3 again, and the steam coming out of the hollow tube 43 heats the material again.

[0037] Multiple guide rollers 22 are arranged at intervals, and the rotation directions of multiple guide rollers 22 are consistent. Multiple guide rollers 22 are distributed on the same inclined plane. In this way, most of the materials falling from the round roller 21 first fall on the highest guide roller 22. The highest guide roller 22 rotates, and a small amount of material falls into the trolley 3 from between the two adjacent guide rollers 22. The material on the highest guide roller 22 falls onto the second highest guide roller 22, and then so on, until the material falls onto the lowest guide roller 22. The lowest guide roller 22 is located above the hollow tube 43, and the last material falls from the lowest guide roller 22 into the trolley 3.

[0038] The distribution width of the multiple guide rollers 22 is greater than the diameter of the round roller 21, so that the material falling from the round roller 21 can fall onto the guide roller 22.

[0039] The heating assembly 4 also includes a connecting rod 44, the two ends of which are respectively connected to the cross beam 41 and the base 42. The connecting rod 44 can rise or fall and is set on the cross beam 41. By lifting the connecting rod 44 upward, the adjustment base 42 and the hollow tube 43 are driven to rise upward in the trolley 3, until the base 42 and the hollow tube 43 are higher than the upper surface of the trolley 3. After the empty trolley 3 comes, the connecting rod 44 is adjusted downward to make the base 42 and the hollow tube 43 reach the set height.

[0040] The heating assembly 4 further includes an air pipe 45 , which is in communication with the base 42 . The air pipe 45 is externally connected to a steam source. The steam in the air pipe 45 passes through a gas-liquid separator to reduce moisture in the gas.

[0041] A plurality of hollow tubes 43 are arranged on the base 42 , and the plurality of hollow tubes 43 are divided into two rows, an upper row and an lower row, and the two rows of the plurality of hollow tubes 43 increase the heating area of ​​the material and make the material in the trolley 3 more fluffy.

[0042] The upper row of hollow tubes 43 and the lower row of hollow tubes 43 are staggered, and there are no adjacent hollow tubes 43 in the vertical direction.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sintering machine trolley material preheating device, comprising a silo (1), a material discharge assembly (2), a trolley (3) and a heating assembly (4), wherein the input end of the material discharge assembly (2) is connected to the discharge end of the silo (1), the trolley (3) is located below the output end of the material discharge assembly (2), and the trolley (3) is located within the heating range of the heating assembly (4), characterized in that: The unloading assembly (2) comprises a rotatably arranged round roller (21) and a guide roller (22), wherein the upper portion of the round roller (21) extends into the interior of the discharge end of the silo (1), and the guide roller (22) is located below the side of the round roller (21); The round roller (21) and the guide roller (22) are located above the trolley (3); The heating assembly (4) comprises a crossbeam (41), a base (42) and a hollow tube (43); the base (42) is arranged on the crossbeam (41), the base (42) is arranged in the trolley (3), and the hollow tube (43) is inserted into the base (42); Steam is passed through the base (42), and the hollow tube (43) is used to discharge steam.

2. The sintering machine trolley material preheating device according to claim 1, characterized in that: The plurality of guide rollers (22) are arranged at intervals, and the plurality of guide rollers (22) are distributed on the same inclined plane.

3. The sintering machine trolley material preheating device according to claim 2, characterized in that: The distribution width of the plurality of guide rollers (22) is greater than the diameter of the round roller (21).

4. The sintering machine trolley material preheating device according to claim 1, characterized in that: The heating assembly (4) further comprises a connecting rod (44), with two ends of the connecting rod (44) respectively connected to the crossbeam (41) and the base (42).

5. The sintering machine trolley material preheating device according to claim 1, characterized in that: The heating component (4) further comprises an air pipe (45), the air pipe (45) being in communication with the base (42), and the air pipe (45) being externally connected to a steam source.

6. The sintering machine trolley material preheating device according to claim 1, characterized in that: The plurality of hollow tubes (43) are arranged on the base (42), and the plurality of hollow tubes (43) are divided into two upper and lower rows and arranged on the base (42).

7. The sintering machine trolley material preheating device according to claim 6, characterized in that: The upper row of hollow tubes (43) and the lower row of hollow tubes (43) are staggered.

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