Sintering fuel separate adding device and sintering machine

Abstract

The invention provides a sintering fuel separate adding device and a sintering machine, the sintering fuel separate adding device comprises a feeding device, the feeding device comprises a feeding bin, a material conveying mechanism and a material distributing mechanism, the feeding bin comprises a feeding front section and a material distributing section which are sequentially connected in the extending direction of the feeding bin, and the material conveying mechanism is used for conveying fuel from a fuel inlet to the tail end of the material distributing section; when the distributing mechanism is in the static state, fuel in the feeding bin stays in the feeding bin, and when the distributing mechanism is in the rotating state, the fuel in the feeding bin falls to the top of a mixture of the sintering machine trolley. According to the device, sintering fuel can be secondarily added to the surface layer of a mixture after material distribution of the round roller, uniform mixing and material leveling operation is carried out, and the device has the advantages of being high in adaptability, good in material distribution effect, adjustable in fuel material distribution amount, adjustable in uniform mixing depth and adjustable in material leveling height. And the material passing through the fuel separating and adding device is sintered and ignited, so that the heat distribution of a sintered material layer is optimized, the quality of surface sintered ore is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sintering, in particular to a sintering fuel adding device and a sintering machine. Background Art

[0002] With the rapid development of modern industry, the scale of steel production is getting larger and larger, and energy consumption is also increasing. Energy conservation and environmental protection indicators are becoming more and more important factors in the steel production process. In steel production, iron-containing raw ore needs to be processed by the sintering system before entering the blast furnace for smelting. That is, various powdered iron-containing raw materials are mixed with appropriate amounts of fuel (coal powder, coke powder) and flux, and appropriate amounts of water. After mixing and balling, they are placed on the sintering trolley for roasting, so that a series of physical and chemical changes occur, forming sintered ore that is easy to smelt. This process is called sintering.

[0003] In the sintering solid fuel addition process, a part of the fuel is mixed with the sintering mixture and participates in the granulation of the sintering mixture; the other part of the external fuel is added to the surface of the mixture particles through the upper layer of the sintering machine trolley after the secondary mixing of the sintering mixture. This can effectively reduce the sintering solid fuel consumption, save energy and reduce carbon, while improving the sintering finished product rate, and increasing the sintering utilization coefficient and sintered ore strength.

[0004] The main component of sintering solid fuel is coke powder. At present, there is no mature case for the uniform addition of external coke powder on the surface of sintering machine mixture particles. How to achieve uniform addition of coke powder fuel in the width direction of the sintering machine through a sintering fuel addition device is a difficult problem in the industry.

[0005] In view of this, it is necessary to propose a sintering fuel addition device and a sintering machine to solve or at least alleviate the above-mentioned defects. Summary of the invention

[0006] The main purpose of the present invention is to provide a sintering fuel adding device and a sintering machine, so as to solve the technical problem in the prior art of how to evenly add coke powder fuel to the top of the mixture in the width direction of the sintering machine.

[0007] To achieve the above-mentioned purpose, the present invention provides a sintering fuel distribution device, including a feeding device, wherein the feeding device includes a feeding bin, a feeding mechanism and a material distribution mechanism; wherein:

[0008] The feed bin is arranged transversely of the sintering machine trolley, and comprises a feed front section and a distribution section which are connected in sequence along its own extension direction, the feed front section is provided with a fuel inlet, the distribution section is arranged just above the sintering machine trolley, and the length of the distribution section matches the width of the sintering machine trolley, and the feeding mechanism is used to transport the fuel from the fuel inlet toward the tail end of the distribution section;

[0009] The distribution mechanism is arranged at the bottom of the feeding bin, and the distribution length of the distribution mechanism matches the width of the sintering machine trolley. The distribution mechanism has a static state and a rotating state. When in the static state, the fuel in the feeding bin stays in the feeding bin. When in the rotating state, the fuel in the feeding bin falls to the top of the mixture of the sintering machine trolley.

[0010] Preferably, the feeding mechanism comprises a first driving mechanism and a screw conveying mechanism, and the first driving mechanism drives the screw conveying mechanism to rotate in the feeding bin to convey the fuel from the fuel inlet toward the rear end of the material distribution section.

[0011] Preferably, the fabric section comprises a fabric middle section, a first buffer tail section and a second buffer tail section which are connected in sequence along its own extension direction, wherein the fabric middle section comprises a first upper bin and a first lower bin, the top of the first lower bin is connected to the first upper bin, the width of the first bin is arranged with equal diameter along its own extension direction, the width of the first lower bin gradually decreases from top to bottom, and the spiral conveying mechanism is arranged in the first upper bin;

[0012] The first buffer tail section includes a second upper bin body and a second lower bin body, the top of the second lower bin body is connected to the second upper bin body, the widths of the second upper bin body and the second lower bin body gradually increase from the middle section of the fabric to the second buffer tail section, the width of the second upper bin body is arranged with equal diameter from top to bottom, the width of the second lower bin body gradually decreases from top to bottom, and the tail end surface of the first lower bin body is arranged obliquely downward toward the first buffer tail section;

[0013] The second buffer tail section includes a third upper bin and a third lower bin. The top of the third lower bin is connected to the third upper bin. The widths of the third upper bin and the third lower bin are arranged with equal diameters along their own extension directions. The width of the third lower bin gradually decreases from top to bottom. The tail end plate of the third lower bin is arranged obliquely downward toward the second lower bin. The material distribution mechanism is arranged at the bottom of the first lower bin and the second lower bin.

[0014] Preferably, the third upper bin body is provided with a flow distance measuring device on the inner wall surface away from the middle section of the cloth, and the flow distance measuring device is used to measure the shortest distance S between the fuel flows from the third upper bin body, and the distance between the flow distance measuring device and the rear end surface of the third upper bin body is S0, wherein, in normal operating conditions:

[0015] If S>S1, it is determined that the current working condition has not reached the lowest material level line, and the speed of the feeding mechanism is increased until S1≥S>S2; wherein S0>S1;

[0016] If S1≥S>S2, it is determined that the feed bin is in a normal state under the current working condition, and the current state is maintained to continue production;

[0017] If S2≥S>S3, it is determined that the feed bin is in the fuel excess range, and the speed of the feed mechanism is reduced until S1≥S>S2;

[0018] If S3≥S, it is determined that the feeding bin is in the over-limit range and the feeding mechanism is controlled to shut down.

[0019] Preferably, the inclination angle of the tail end plate of the third lower storage body is greater than the natural repose angle of the fuel.

[0020] Preferably, it further comprises a mixing device disposed between the ignition mechanism and the feeding device, the mixing device comprising a frame, a second driving mechanism, a rotating shaft, a mounting plate, and a plurality of blade assemblies spaced apart along the circumference of the mounting plate; wherein,

[0021] The second driving mechanism is installed on the frame, the rotating shaft is rotatably installed on the frame, the rotating shaft is arranged above the sintering machine trolley, the mounting disk is connected to the outer peripheral wall of the rotating shaft and moves synchronously with the rotating shaft, the blade assembly is installed on the outer peripheral wall of the mounting disk and moves synchronously with the mounting disk, and the second driving mechanism drives the rotating shaft to rotate and drives the blade assembly to mix the top mixture and fuel of the sintering machine trolley.

[0022] Preferably, it also includes a flattening device arranged between the mixing device and the ignition mechanism, the flattening device includes a third bracket, a flattening plate and a steel wire rope, wherein the third bracket is connected to the sintering machine skeleton, the flattening plate is hinged to the third bracket, and the steel wire rope includes a first end and a second end arranged opposite to each other along its own extension direction, the first end is connected to the sintering machine skeleton, and the second end is connected to the flattening plate.

[0023] Preferably, a wear-resistant plate is installed on the wall surface of the flat plate close to the sintering machine trolley.

[0024] Preferably, the cloth mechanism includes a third driving mechanism, a cloth roller, and a first baffle and a second baffle relatively connected to the two ends of the cloth roller, the first baffle and the second baffle are both connected to the outer peripheral wall of the cloth roller, and the distance between the first baffle and the second baffle is the cloth length of the cloth mechanism.

[0025] The present invention also provides a sintering machine, comprising a sintering machine frame, a mixture distribution device, an ignition device and multiple sintering machine trolleys, wherein the ignition mechanism is arranged in front of the running direction of the sintering machine, and comprises a sintering fuel distribution device as described above, wherein the sintering fuel distribution device is arranged between the mixture distribution device and the ignition device, the feeding bin of the sintering fuel distribution device is connected to the sintering machine frame, and the sintering fuel distribution device is arranged above the sintering machine trolley, and is used to add fuel to the top of the mixture on the sintering machine trolley.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention provides a sintering fuel distribution device and a sintering machine, including a feeding device, the feeding device including a feeding bin, a feeding mechanism and a distribution mechanism, the feeding bin including a feeding front section and a distribution section connected in sequence along its own extension direction, the feeding mechanism is used to transport the fuel from the fuel inlet toward the tail end of the distribution section, when the distribution mechanism is in a stationary state, the fuel in the feeding bin stays in the feeding bin, and when it is in a rotating state, the fuel in the feeding bin falls to the top of the mixture of the sintering machine trolley. The present invention can add the sintering fuel to the surface of the mixture for a second time after the circular roller distribution, and perform mixing and leveling operations, and has the characteristics of strong adaptability, good distribution effect, adjustable fuel distribution amount, adjustable mixing depth, and adjustable leveling height. The material after passing through the fuel distribution device is then subjected to a sintering ignition process, thereby optimizing the heat distribution of the sintering material layer, improving the quality of the surface sintered ore, and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 This is an application scenario diagram of the overall structure in one embodiment of the present invention;

[0030] Figure 2 for Figure 1 A partial schematic diagram of

[0031] Figure 3 for Figure 2 Schematic diagram of the cross section along the AA direction;

[0032] Figure 4 It is a structural schematic diagram of a feeding bin in one embodiment of the present invention;

[0033] Figure 5for Figure 4 Schematic diagram of the cross section along the FF direction;

[0034] Figure 6 for Figure 4 Schematic diagram of the cross section along the GG direction;

[0035] Figure 7 is a schematic top view of a feeding bin in one embodiment of the present invention;

[0036] Figure 8 It is a front view of an application scene diagram of a mixing device in one embodiment of the present invention;

[0037] Fig. 9 for Figure 8 A is an enlarged schematic diagram;

[0038] Fig.10 A top view of an application scene diagram of a mixing device in an embodiment of the present invention;

[0039] Fig.11 A schematic diagram of a blade assembly stirring fuel and mixed material in one embodiment of the present invention;

[0040] Fig.12 is a schematic structural diagram of a blade in an embodiment of the present invention;

[0041] Fig.13 is a side view of a blade in one embodiment of the present invention;

[0042] Fig.14 is a structural schematic diagram of a material distribution mechanism in one embodiment of the present invention;

[0043] Fig.15 for Figure 2 B view in the figure;

[0044] Fig.16 It is a schematic structural diagram of a flat material device in one embodiment of the present invention.

[0045] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

[0046] Description of Figure Numbers:

[0047] 10. Feeding device; 110. Feeding bin; 111. Feeding front section; 1111. Fuel inlet; 112. Distribution middle section; 1121. First upper bin body; 1122. First lower bin body; 1123. Regulating valve plate; 113. First buffer tail section; 1131. Second upper bin body; 1132. Second lower bin body; 114. Second buffer tail section; 1141. Third upper bin body; 1142. Third lower bin body; 1143. Tail plate; 120. Feeding mechanism; 121. First driving mechanism; 122. Screw conveying mechanism; 130. Distribution mechanism; 131. Third driving mechanism; 132. Distribution roller; 133. First baffle plate; 134. Second baffle plate; 20. Material flow distance measuring device;

[0048] 30. Mixing device; 310. Frame; 3110. First frame assembly; 3111. First bracket; 3112. First height adjustment assembly; 3113. First bearing seat; 3120. Second frame assembly; 3121. Second bracket; 3122. Second height adjustment assembly; 3123. Second bearing seat; 320. Second driving mechanism; 330. Rotating shaft; 340. Mounting plate; 3410. First end surface; 3420. Second end surface; 350. Blade assembly; 3510. Blade; 3511. First side connecting section; 35111. First connecting hole; 3512. Middle stirring section; 35121. Inclined surface; 3513. Second side connecting section; 35131. Third connecting hole;

[0049] 40. Flat material device; 410. Third bracket; 420. Flat material plate; 430. Steel wire rope; 431. First end; 432. Second end; 440. Wear-resistant plate; 60. Sintering machine frame; 710. Mixture distribution device; 20. Ignition device; 810. Mixture; 820. Fuel; 90. Sintering machine trolley. DETAILED DESCRIPTION

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as described in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] Please see attached Figures 1 to 16 A sintering fuel adding device in one embodiment of the present invention comprises a feeding device 10, wherein the feeding device 10 comprises a feeding bin 110, a feeding mechanism 120 and a distribution mechanism 130; wherein the feeding bin 110 is arranged transversely of a sintering machine trolley 90, the feeding bin 110 comprises a feeding front section 111 and a distribution section (not shown) connected in sequence along its own extension direction, the feeding front section 111 is provided with a fuel inlet 1111, the distribution section is arranged directly above the sintering machine trolley 90, and the length of the distribution section matches the width of the sintering machine trolley 90, and the feeding mechanism 120 is used to transport the fuel 820 from the fuel inlet 1111 toward the tail end of the distribution section;

[0055] The distribution mechanism 130 is arranged at the bottom of the feeding bin 110, and the distribution length of the distribution mechanism 130 matches the width of the sintering machine trolley 90. The distribution mechanism 130 has a static state and a rotating state. When in the static state, the fuel 820 in the feeding bin 110 stays in the feeding bin 110. When in the rotating state, the fuel 820 in the feeding bin 110 falls to the top of the mixture 810 of the sintering machine trolley 90.

[0056] Specifically, Figure 3As shown, the feed bin 110 is arranged transversely along the sintering machine trolley 90 and is located above the sintering machine trolley 90; the feed front section 111 is provided with a fuel inlet 1111 for receiving the fuel 820; the distribution section is located directly above the sintering machine trolley 90, and its length matches the width of the sintering machine trolley 90, so that the fuel 820 can be evenly distributed on the sintering machine trolley 90; the feeding mechanism 120 is used to transport the fuel 820 from the fuel inlet 1111 toward the tail end of the distribution section. By reasonably controlling the feeding mechanism 120, the distribution of the fuel 820 in the feed bin 110 can be controlled to match the width of the sintering machine trolley 90; the distribution mechanism 130 is located at the bottom of the feed bin 110, and its distribution length also matches the width of the sintering machine trolley 90, so as to ensure that the sintering machine trolley 90 can be evenly distributed in the width direction. The distribution mechanism 130 has two states: a stationary state and a rotating state. When the distribution mechanism 130 is in a stationary state, the fuel 820 in the feeding bin 110 stays in the feeding bin 110 and does not fall onto the sintering machine trolley 90. When the distribution mechanism 130 is in a rotating state, the fuel 820 in the feeding bin 110 falls onto the top of the mixed material 810 of the sintering machine trolley 90 through the action of the distribution mechanism 130.

[0057] Preferably, if Fig.14 As shown, the material distribution mechanism 130 includes a third driving mechanism 131, a material distribution roller 132, and a first baffle 133 and a second baffle 134 connected to both ends of the material distribution roller 132, wherein the first baffle 133 and the second baffle 134 are both connected to the outer peripheral wall of the material distribution roller 132, and the distance between the first baffle 133 and the second baffle 134 is the material distribution length of the material distribution mechanism 130. The third driving mechanism 131 is installed on the sintering machine frame 60, and the third driving mechanism 131 drives the material distribution roller 132 to rotate, so as to evenly distribute the fuel 820 to the top of the sintering mixture 810 of the sintering machine trolley 90, and the material flow is loose and uniform.

[0058] The present application scheme can independently add a certain proportion of fuel 820 to the surface of the sintering mixture 810 layer and evenly distribute it along the width direction of the sintering trolley, which can optimize the heat distribution of the sintering material layer, improve the quality of the surface sintered ore, and reduce energy consumption.

[0059] Furthermore, the feeding mechanism 120 includes a first driving mechanism 121 and a screw conveying mechanism 122, and the first driving mechanism 121 drives the screw conveying mechanism 122 to rotate in the feeding bin 110 to convey the fuel 820 from the fuel inlet 1111 toward the rear end of the material distribution section.

[0060] Specifically, the first driving mechanism 121 drives the screw conveying mechanism 122 to rotate in the feed bin 110, and the fuel 820 is continuously and stably conveyed from the fuel inlet 1111 to the tail end of the distribution section. This conveying method avoids the accumulation and blockage of the fuel 820 during the conveying process, and improves the efficiency of the conveying of the fuel 820. During the rotation process, the screw conveying mechanism 122 will evenly distribute the fuel 820 along the length direction of the feed bin 110. When the distribution roller 132 rotates, the fuel 820 falls from the distribution section and can be more evenly covered on the top of the mixed material 810 of the sintering machine trolley 90, which is conducive to the subsequent sintering process. In addition, the screw conveying mechanism 122 occupies a small space and can be suitable for the modification of limited space in the sintering machine.

[0061] As a preferred embodiment, the cloth section includes a cloth middle section 112, a first buffer tail section 113 and a second buffer tail section 114 which are connected in sequence along its own extension direction, wherein the cloth middle section 112 includes a first upper bin body 1121 and a first lower bin body 1122, the top of the first lower bin body 1122 is connected to the first upper bin body 1121, the width of the first bin body is set to be equal in diameter along its own extension direction, the width of the first lower bin body 1122 gradually decreases from top to bottom, and the spiral conveying mechanism 122 is arranged in the first upper bin body 1121;

[0062] The first buffer tail section 113 includes a second upper bin body 1131 and a second lower bin body 1132. The top of the second lower bin body 1132 is connected to the second upper bin body 1131. The widths of the second upper bin body 1131 and the second lower bin body 1132 gradually increase from the middle section 112 of the fabric to the second buffer tail section 114. The width of the second upper bin body 1131 is arranged with equal diameter from top to bottom, and the width of the second lower bin body 1132 gradually decreases from top to bottom. The tail end surface of the first lower bin body 1122 is arranged obliquely downward toward the first buffer tail section 113.

[0063] The second buffer tail section 114 includes a third upper bin body 1141 and a third lower bin body 1142, the top of the third lower bin body 1142 is connected to the third upper bin body 1141, the widths of the third upper bin body 1141 and the third lower bin body 1142 are arranged with equal diameter along their own extension direction, the width of the third lower bin body 1142 gradually decreases from top to bottom, and the tail end plate 1143 of the third lower bin body 1142 is arranged obliquely downward toward the second lower bin body 1132; the cloth mechanism 130 is arranged at the bottom of the first lower bin body 1122 and the second lower bin body 1132.

[0064] Specifically, the width of the first lower bin body 1122 gradually decreases from top to bottom, and the fuel 820 is gradually shrunk and evenly distributed under the push of gravity and the screw conveying mechanism 122. After the distribution roller 132 rotates, the fuel 820 smoothly falls on the top of the mixture 810 of the sintering machine trolley 90. The widths of the second upper bin body 1131 and the second lower bin body 1132 gradually increase from the distribution middle section 112 to the second buffer tail section 114. The first buffer tail section 113 and the second buffer tail section 114 are provided to buffer the fuel 820. The volume of the first buffer tail section 113 and the second buffer tail section 114 is larger than that of the distribution middle section 112. Therefore, the fuel 820 is further dispersed and buffered when entering the first buffer tail section 113 and the second buffer tail section 114, especially when the incoming material is uneven, buffering can be achieved to avoid uneven distribution in the end area of ​​the sintering machine trolley 90.

[0065] Furthermore, the inclination angle of the tail end plate 1143 of the third lower silo 1142 is greater than the natural repose angle of the fuel 820. When the inclination angle of the tail end plate 1143 of the third lower silo 1142 is greater than the natural repose angle of the fuel 820, the fuel 820 can slide more smoothly from the tail of the silo under the action of gravity, avoiding the problem of fuel 820 accumulation caused by the repose angle, keeping the first buffer tail section 113 and the second buffer tail section 114 unobstructed, and preventing the production from being affected by the blockage of the fuel 820.

[0066] The material distribution mechanism 130 is disposed at the bottom of the first lower bin 1122 and the second lower bin 1132. When the material distribution mechanism 130 is in a rotating state, the fuel 820 evenly falls from the bottom of the two bins to the top of the mixed material 810 of the sintering machine trolley 90. The material distribution mechanism 130 can ensure that the fuel 820 is evenly distributed on the mixed material 810.

[0067] Furthermore, if Figure 6 As shown, the first lower bin 1122 is also provided with an adjusting valve plate 1123 for adjusting the discharge amount of the material distribution mechanism 130. The gap between the valve plate 1123 and the material distribution roller 132 can be manually adjusted as needed to achieve the purpose of adjustment. Secondly, the central axis of the material distribution middle section 112 and the central axis of the roller type material distribution device are staggered by a certain distance S' along the running direction of the sintering machine trolley 90, which is conducive to preventing the fuel 820 from naturally flowing out from the roller gap when the material distribution mechanism 130 is stopped.

[0068] As a preferred embodiment, the third upper silo 1141 is provided with a flow distance measuring device 20 on the inner wall surface away from the cloth middle section 112, and the flow distance measuring device 20 is used to measure the shortest distance S between the fuel 820 flows from the third upper silo 1141, and the distance between the flow distance measuring device 20 and the tail end surface of the third upper silo 1141 is 0, wherein, in normal operating conditions:

[0069] If S>S1, it is determined that the current working condition has not reached the lowest material level line, and the speed of the feeding mechanism 120 is increased until S1≥S>S2; wherein>S1;

[0070] If S1≥S>S2, it is determined that the feed bin 110 is in a normal state under the current working condition, and the current state is maintained to continue production;

[0071] If S2≥S>S3, it is determined that the feed bin 110 is in the excess range of the fuel 820, and the rotation speed of the feed mechanism 120 is reduced until S1≥S>S2;

[0072] If S3 ≥ S, it is determined that the feeding bin 110 is in an over-limit range, and the feeding mechanism 120 is controlled to shut down.

[0073] Specifically, Figure 4 As shown, the material flow distance measuring device 20 is installed on the inner wall surface of the third upper warehouse body 1141 away from the cloth middle section 112, and is used to measure in real time the shortest distance S between the fuel 820 material flows from the third upper warehouse body 1141. The distance between the material flow distance measuring device 20 and the rear end surface of the third upper warehouse body 1141 is 0 to ensure the accuracy of the measurement.

[0074] According to the preset thresholds S1, S2 and S3 (where S1>S2>S3), the distance S measured by the material flow distance measuring device 20 is judged, such as Figure 4 As shown, three material flow lines a, b, and c are set between the first buffer tail section 113 and the second buffer tail section 114, where a is the lowest material flow line, b is the alarm material level line, and c is the limit material level line.

[0075] If S>S1, it means that the current working condition has not reached the lowest material level line, and the amount of fuel 820 is insufficient. At this time, the speed of the feeding mechanism 120 is increased to increase the input amount of fuel 820 until S1≥S>S2;

[0076] If S1≥S>S2, it means that the feed bin 110 is in a normal state under the current working condition, and the amount of fuel 820 is moderate. At this time, the current state is maintained to continue production;

[0077] If S2≥S>S3, it means that the feed bin 110 is in the excess range of fuel 820 and there is too much fuel 820. At this time, the rotation speed of the feeding mechanism 120 is reduced to reduce the input amount of fuel 820 until S1≥S>S2;

[0078] If S3≥S, it means that the feed bin 110 is in an over-limit range and the fuel 820 is seriously excessive. At this time, the feed mechanism 120 is controlled to stop to prevent the fuel 820 from piling up and blocking.

[0079] The material flow distance measuring device 20 preferably adopts a radar level meter. Through real-time monitoring of the material flow distance measuring device 20, changes in the amount of fuel 820 in the feed bin 110 can be detected in time, and automatic adjustments can be made to ensure that the fuel 820 is maintained within an appropriate range, thereby achieving uniform distribution of the sintering machine trolley 90 in the width direction.

[0080] It is worth noting that S1≥S>S2 is the normal state, S1 is the lower limit value of the normal state, and S2 is the upper limit value of the normal state. Both take into account the problems of fuel 820 fluctuation and uneven incoming materials. In other words, if S1≥S>S2, it means that under the current working conditions, regardless of whether the incoming materials fluctuate or not, it can ensure that the fuel 820 can be evenly distributed in the width direction of the sintering machine trolley 90, and at the same time ensure that the fuel 820 in the spiral conveying mechanism 122 is in a reasonable range, and there will be no problem of excessive fuel 820 causing blockage.

[0081] According to the formula Q=60*2πrntlρ (Q represents output, t represents opening, l represents cloth width, n represents rotation speed, r represents radius of cloth roller 132, ρ represents material density), wherein 2πr is circumference, multiplied by t opening is area, multiplied by rotation speed n and cloth width l is volume. Therefore, precise control of cloth amount can be achieved by controlling rotation speed n, thereby avoiding uneven cloth in width direction due to insufficient fuel 820 (for example, insufficient fuel 820 on one side of sintering machine trolley 90) or excessive blockage of screw conveying mechanism 122, thereby effectively avoiding the occurrence of faults such as accumulation and blockage of fuel 820 and extending the service life of the equipment.

[0082] This embodiment solves the problem of uniform distribution of a small amount of sintering fuel 820 in the width direction of the trolley, and at the same time realizes accurate quantitative feeding of the fuel 820 through adjustment and control, and can make corresponding adjustments when the output of the sintering machine changes.

[0083] As another preferred embodiment, it also includes a mixing device 30 disposed between the ignition mechanism and the feeding device 10, the mixing device 30 includes a frame 310, a second driving mechanism 320, a rotating shaft 330, a mounting plate 340, and a plurality of blade assemblies 350 arranged at intervals along the circumference of the mounting plate 340; wherein,

[0084] The second driving mechanism 320 is installed on the frame 310, the rotating shaft 330 is rotatably installed on the frame 310, the rotating shaft 330 is arranged above the sintering machine trolley 90, the mounting plate 340 is connected to the outer peripheral wall of the rotating shaft 330 and moves synchronously with the rotating shaft 330, the blade assembly 350 is installed on the outer peripheral wall of the mounting plate 340 and moves synchronously with the mounting plate 340, the second driving mechanism 320 drives the rotating shaft 330 to rotate and drives the blade assembly 350 to mix the top mixture 810 and the fuel 820 of the sintering machine trolley 90.

[0085] Please see attached Figures 8 to 13 Specifically, the second driving mechanism 320 is mounted on the frame 310 and is the power source of the entire device; the rotating shaft 330 is rotatably mounted on the frame 310 and is connected to the mounting plate 340. When the rotating shaft 330 rotates, the mounting plate 340 moves synchronously with the rotating shaft 330. When the mounting plate 340 rotates, the blade assembly 350 also moves synchronously. The design of the blade assembly 350 enables it to effectively stir and mix the mixture 810 and the fuel 820 on the top of the sintering machine trolley 90, thereby achieving the purpose of mixing. The movement form of the blade assembly 350 of the present application is a rotary movement, which realizes the continuous and stable mixing of the mixture 810 and the fuel 820 on the top of the sintering machine trolley 90, and the mixing efficiency is relatively high. The mixed fuel 820 and the mixture 810 can optimize the heat distribution of the sintering material layer, improve the quality of the surface sintered ore, and reduce energy consumption.

[0086] As a preferred example, there are multiple mounting plates 340 , and the multiple mounting plates 340 are evenly spaced and arranged along the extending direction of the rotating shaft 330 .

[0087] As a preferred embodiment, each of the blade assemblies 350 includes a plurality of blades 3510 arranged along the extension direction of the rotating shaft 330, each of the blades 3510 is in a concave shape with its opening facing the rotating shaft 330, and the blade 3510 includes a first side connecting section 3511, a middle stirring section 3512 and a second side connecting section 3513 which are sequentially connected along its own extension direction, and each of the mounting plates 340 has a first end face 3410 and a second end face 3420 which are relatively arranged in its own thickness direction, wherein the first side connecting section 3511 of the i-th blade 3510 is connected to the first end face 3410 of the i-th mounting plate 340, the second side connecting section 3513 of the i-th blade 3510 is connected to the second end face 3420 of the i+th mounting plate 340, and the first side connecting section 3511 of the i+th blade 3510 is connected to the first end face 3410 of the i+th mounting plate 340.

[0088] Specifically, through the rotation of the second driving mechanism 320, the blade assembly 350 brings up the fuel 820 and the mixture 810 to mix them evenly, the principle of which is similar to that of an egg beater, such as Fig. 9 As shown, the blades 3510 are arranged in an interlaced manner. This cross-connected arrangement enables the blades 3510 to span multiple mounting plates 340 to form a continuous stirring network, thereby improving the stirring efficiency and reducing the gaps between the blades 3510 to ensure that the material surface can be mixed evenly. The variable i is introduced to illustrate the positional connection relationship between two adjacent blades 3510 and between the blades 3510 and the mounting plate 340. The blades 3510 include a first side connecting section 3511, a middle stirring section 3512, and a second side connecting section 3513, forming a U-shaped or concave structure. This structure not only enhances the strength of the blades 3510 themselves, but also enables the blades 3510 to better adapt to the connection between the mounting plates 340, thereby improving the structural stability of the entire device.

[0089] As a preferred example, the end surface of the middle stirring section 3512 away from the rotating shaft 330 is a slope 35121, and the inclination angle of the slope 35121 is set between 30° and 60°. Fig.11 As shown, preferably, the inclination direction of the inclined surface 35121 matches the rotation direction of the rotation axis 330, for example Fig.11 When the rotation direction of the middle rotating shaft 330 is counterclockwise, the inclination direction of the inclined surface 35121 is the same as Fig.11 As shown, this design can lift the material to a certain extent and achieve a better mixing effect.

[0090] Further, the first side connection section 3511 is provided with a first connection hole 35111 for bolts to penetrate, the mounting plate 340 is provided with a second connection hole (not shown) corresponding to the first connection hole 35111, the second side connection section 3513 is provided with a third connection hole 35131 for bolts to penetrate, the mounting plate 340 is provided with a fourth connection hole (not shown) corresponding to the third connection hole 35131, the first side connection section 3511 is connected to the mounting plate 340 by bolts penetrating the first connection hole 35111 and the second connection hole, and the second side connection section 3513 is connected to the mounting plate 340 by bolts penetrating the third connection hole 35131 and the fourth connection hole. The first side connection section 3511 and the second side connection section 3513 are respectively fixed to the mounting plate 340 by bolts, forming a firm mechanical connection, ensuring the stability and durability of the overall structure, and the bolt connection facilitates assembly and disassembly.

[0091] As a preferred embodiment, the frame 310 includes a first frame assembly 3110 and a second frame assembly 3120 which are relatively arranged on both sides of the sintering machine trolley 90, wherein the first frame assembly 3110 includes a first bracket 3111, a first height adjustment assembly 3112 and a first bearing seat 3113, and the first height adjustment assembly 3112 is connected to the first bracket 3111 to adjust the installation height of the first bearing seat 3113;

[0092] The second frame assembly 3120 includes a second bracket 3121, a second height adjustment assembly 3122 and a second bearing seat 3123. The second height adjustment assembly 3122 is connected to the second bracket 3121 for adjusting the installation height of the second bearing seat 3123. One end of the rotating shaft 330 is connected to the first bearing seat 3113, and the other end of the rotating shaft 330 is connected to the second bearing seat 3123.

[0093] Furthermore, the first height adjustment assembly 3112 includes a plurality of first adjustment gaskets (not shown) stacked in sequence vertically, the bottom first adjustment gasket is arranged on the top of the first bracket 3111, and the first bearing seat 3113 is installed on the top of the top first adjustment gasket;

[0094] The second height adjustment assembly 3122 includes a plurality of second adjustment gaskets (not shown) stacked vertically in sequence, the bottom second adjustment gasket is arranged on the top of the second bracket 3121, and the second bearing seat 3123 is installed on the top of the top second adjustment gasket.

[0095] Specifically, the first height adjustment component 3112 is composed of a plurality of first adjustment gaskets stacked in sequence vertically, and these gaskets can be increased or decreased as needed to adjust the installation height of the first bearing seat 3113. The second height adjustment component 3122 is composed of a plurality of second adjustment gaskets stacked in sequence vertically, and the first height adjustment component 3112 and the second height adjustment component 3122 are adapted in the height direction, preferably with the rotating shaft 330 in a horizontal state.

[0096] The installation height of the first bearing seat 3113 and the second bearing seat 3123 can be easily adjusted through the adjustment gaskets in the first height adjustment component 3112 and the second height adjustment component 3122, which has the characteristics of simple structure, convenient maintenance, adjustable mixing depth of fuel 820 and mixture 810, and low cost.

[0097] Furthermore, the plurality of blade assemblies 350 are evenly spaced and arranged along the circumference of the mounting plate 340 .

[0098] As a preferred example, the thickness of each of the first adjustment pad and the second adjustment pad is set to 0.1-0.1mm. In other embodiments, those skilled in the art can also set the thickness to other values ​​as needed.

[0099] Furthermore, the inner circumferential wall of the mounting plate 340 and the outer circumferential wall of the rotating shaft 330 are welded.

[0100] As another preferred embodiment, it also includes a flattening device 40 arranged between the mixing device 30 and the ignition mechanism, the flattening device 40 includes a third bracket 410, a flattening plate 420 and a steel wire rope 430, wherein the third bracket 410 is connected to the sintering machine skeleton 60, the flattening plate 420 is hinged to the third bracket 410, and the steel wire rope 430 includes a first end 431 and a second end 432 arranged opposite to each other along its own extension direction, the first end 431 is connected to the sintering machine skeleton 60, and the second end 432 is connected to the flattening plate 420.

[0101] Specifically, the flat plate 420 is connected to the sintering machine frame 60 through a steel wire rope 430, and can perform a certain degree of hinged movement on the third bracket 410, such as Fig.16 As shown, the sintering machine trolley 90 moves from left to right. Through the leveling effect of the flattening plate 420, it can ensure that the material and fuel 820 on the top of the sintering machine trolley 90 are evenly distributed in the height direction, avoiding local accumulation or depression, improving the stability and continuity of the sintering process, and then improving the quality and output of the sintered products; the flattening device 40 is connected to the sintering machine frame 60 through a steel wire rope 430. This connection method has a certain elasticity and can buffer the impact force of the material and fuel 820 on the flattening plate 420 to a certain extent.

[0102] In this embodiment, the mixed material is flattened, and the height of the flattening plate 420 can be automatically adjusted to suit the height of the material, is not limited by the height of the material, and has a simple structure.

[0103] Furthermore, the flat plate 420 is provided with a wear plate 440 on the wall surface close to the sintering machine trolley 90. Preferably, the wear plate 440 is shorter than the flat plate 420 and is arranged at a position where it mainly contacts the sintering mixture 810 to improve the service life. The wear plate 440 is detachably connected to the flat plate 420 for easy installation and replacement.

[0104] The present invention also provides a sintering machine, including a sintering machine frame 60, a mixture distribution device 710, an ignition device 20 and multiple sintering machine trolleys 90, the ignition mechanism is arranged in front of the running direction of the sintering machine, and includes a sintering fuel distribution device as mentioned above, the sintering fuel distribution device is arranged between the mixture distribution device 710 and the ignition device 20, the feeding bin 110 of the sintering fuel distribution device is connected to the sintering machine frame 60, and the sintering fuel distribution device is arranged above the sintering machine trolley 90, and is used to add fuel 820 to the top of the mixture 810 of the sintering machine trolley 90.

[0105] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sintering fuel adding device, characterized in that: It includes a feeding device, which includes a feeding bin, a feeding mechanism and a material distribution mechanism; wherein, The feed bin is arranged transversely of the sintering machine trolley, and comprises a feed front section and a distribution section which are connected in sequence along its own extension direction, the feed front section is provided with a fuel inlet, the distribution section is arranged just above the sintering machine trolley, and the length of the distribution section matches the width of the sintering machine trolley, and the feeding mechanism is used to transport the fuel from the fuel inlet toward the tail end of the distribution section; The distribution mechanism is arranged at the bottom of the feeding bin, and the distribution length of the distribution mechanism matches the width of the sintering machine trolley. The distribution mechanism has a static state and a rotating state. When in the static state, the fuel in the feeding bin stays in the feeding bin. When in the rotating state, the fuel in the feeding bin falls to the top of the mixture of the sintering machine trolley.

2. The sintering fuel adding device according to claim 1, characterized in that: The feeding mechanism comprises a first driving mechanism and a screw conveying mechanism, wherein the first driving mechanism drives the screw conveying mechanism to rotate in the feeding bin to convey the fuel from the fuel inlet toward the rear end of the material distribution section.

3. The sintering fuel adding device according to claim 2, characterized in that: The cloth section includes a cloth middle section, a first buffer tail section and a second buffer tail section which are connected in sequence along its own extension direction, wherein the cloth middle section includes a first upper bin and a first lower bin, the top of the first lower bin is connected to the first upper bin, the width of the first bin is set to be equal in diameter along its own extension direction, the width of the first lower bin gradually decreases from top to bottom, and the spiral conveying mechanism is arranged in the first upper bin; The first buffer tail section includes a second upper bin body and a second lower bin body, the top of the second lower bin body is connected to the second upper bin body, the widths of the second upper bin body and the second lower bin body gradually increase from the middle section of the fabric to the second buffer tail section, the width of the second upper bin body is arranged with equal diameter from top to bottom, the width of the second lower bin body gradually decreases from top to bottom, and the tail end surface of the first lower bin body is arranged obliquely downward toward the first buffer tail section; The second buffer tail section includes a third upper bin and a third lower bin. The top of the third lower bin is connected to the third upper bin. The widths of the third upper bin and the third lower bin are arranged with equal diameters along their own extension directions. The width of the third lower bin gradually decreases from top to bottom. The tail end plate of the third lower bin is arranged obliquely downward toward the second lower bin. The material distribution mechanism is arranged at the bottom of the first lower bin and the second lower bin.

4. The sintering fuel addition device according to claim 3, characterized in that: The third upper bin body is provided with a flow distance measuring device on the inner wall surface away from the middle section of the cloth, and the flow distance measuring device is used to measure the shortest distance S between the fuel flows from the third upper bin body, and the distance between the flow distance measuring device and the tail end surface of the third upper bin body is S0, wherein, in normal operating conditions: If S>S1, it is determined that the current working condition has not reached the lowest material level line, and the speed of the feeding mechanism is increased until S1≥S>S2; wherein S0>S1; If S1≥S>S2, it is determined that the feed bin is in a normal state under the current working condition, and the current state is maintained to continue production; If S2≥S>S3, it is determined that the feed bin is in the fuel excess range, and the speed of the feed mechanism is reduced until S1≥S>S2; If S3≥S, it is determined that the feeding bin is in the over-limit range and the feeding mechanism is controlled to shut down.

5. The sintering fuel adding device according to claim 3, characterized in that: The inclination angle of the tail end plate of the third lower storage body is greater than the natural repose angle of the fuel.

6. The sintering fuel adding device according to claim 1, characterized in that: It also includes a mixing device disposed between the ignition mechanism and the feeding device, the mixing device including a frame, a second driving mechanism, a rotating shaft, a mounting plate, and a plurality of blade assemblies spaced apart along the circumference of the mounting plate; wherein, The second driving mechanism is installed on the frame, the rotating shaft is rotatably installed on the frame, the rotating shaft is arranged above the sintering machine trolley, the mounting disk is connected to the outer peripheral wall of the rotating shaft and moves synchronously with the rotating shaft, the blade assembly is installed on the outer peripheral wall of the mounting disk and moves synchronously with the mounting disk, and the second driving mechanism drives the rotating shaft to rotate and drives the blade assembly to mix the top mixture and fuel of the sintering machine trolley.

7. The sintering fuel adding device according to claim 6, characterized in that: It also includes a flat material device arranged between the mixing device and the ignition mechanism, the flat material device includes a third bracket, a flat material plate and a steel wire rope, wherein the third bracket is connected to the sintering machine skeleton, the flat material plate is hinged to the third bracket, and the steel wire rope includes a first end and a second end arranged opposite to each other along its own extension direction, the first end is connected to the sintering machine skeleton, and the second end is connected to the flat material plate.

8. The sintering fuel adding device according to claim 7, characterized in that: The flat plate is provided with a wear-resistant plate on the wall surface close to the sintering machine trolley.

9. The sintering fuel addition device according to any one of claims 1 to 8, characterized in that: The cloth mechanism includes a third driving mechanism, a cloth roller, and a first baffle and a second baffle relatively connected to the two ends of the cloth roller, the first baffle and the second baffle are both connected to the outer peripheral wall of the cloth roller, and the distance between the first baffle and the second baffle is the cloth length of the cloth mechanism.

10. A sintering machine, comprising a sintering machine frame, a mixed material distribution device, an ignition device and a plurality of sintering machine trolleys, wherein the ignition mechanism is arranged in front of the sintering machine in the running direction, and characterized in that: It comprises a sintering fuel distribution device as described in any one of claims 1 to 9, wherein the sintering fuel distribution device is arranged between the mixture distribution device and the ignition device, the feeding bin of the sintering fuel distribution device is connected to the sintering machine frame, and the sintering fuel distribution device is arranged above the sintering machine trolley to add fuel to the top of the mixture on the sintering machine trolley.

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