Device for adding fuel into sintering surface layer material

Abstract

The utility model discloses a device for adding fuel into a sintering surface layer material. The device comprises a fuel feeding mechanism, a fuel distributing mechanism and a material mixing mechanism, and the discharging end of the fuel feeding mechanism is communicated with the feeding end of the fuel distributing mechanism. And the mixing mechanism is arranged on the downstream side of the fuel distributing mechanism in the moving direction of the sintered material. The material mixing mechanism comprises a supporting frame and a material mixing part. The mixing part is arranged on the downstream side of the fuel distributing mechanism through a supporting frame, and the lower end of the mixing part extends downwards into the sintering surface layer material. According to the utility model, the fuel feeding mechanism, the fuel distributing mechanism and the mixing mechanism are connected in series and matched, so that fuel is uniformly and stably added into a sintering surface material, secondary mixing of newly distributed solid fuel and the sintering surface material can be realized, the mixing thickness and proportion are adjustable, the sintering quality is improved, and the production cost is reduced. The solid fuel consumption is reduced and the yield is improved.

Description

Technical Field

[0001] This utility model relates to a feeding and mixing device, specifically a device for adding fuel to sintered surface material, belonging to the field of material mixing technology. Background Technology

[0002] Iron ore sintering is a crucial step in steelmaking, and its product, sintered ore, is the main raw material for blast furnace ironmaking. Iron ore sintering involves mixing iron ore, solid fuel, flux, and other materials in a specific ratio, placing the mixture on a sintering trolley, and then igniting and sintering it to obtain sintered ore. Solid fuel is typically powdered granules such as coke powder or anthracite.

[0003] Iron ore sintering employs a draft sintering process, where the surface mixture is ignited by a furnace, and the sintering process proceeds from top to bottom while a trolley carrying the mixture moves horizontally. The upper combustion zone preheats and stores heat for the sintered ore below. During production, a solid fuel segregation ratio is required, gradually decreasing from top to bottom to achieve energy conservation and efficiency improvement.

[0004] The main methods for adding solid fuel to the mixture are internal mixing and external rolling. Internal mixing involves mixing solid fuel, iron ore, flux, etc., using a mixer, which also has a granulation effect and can be considered as uniform mixing. External rolling involves adding solid fuel after the initial granulation by internal mixing for enhanced granulation, while simultaneously adhering solid fuel to the surface, ultimately forming uniformly mixed mineral particles of varying sizes with a higher surface solid fuel content. The final mixture has an average solid fuel content of approximately 4.5%, which is then arranged on a sintering trolley through segregation distribution. The above methods of adding solid fuel can achieve limited fuel segregation, from approximately 5.1% at the surface to approximately 3.8% at the bottom.

[0005] When sinter is ignited on the surface, a higher content of solid fuel (over 10%) makes it easier to ignite, saving ignition energy and resulting in higher ignition quality. High ignition quality of surface sinter leads to high sinter quality and provides sufficient heat for subsequent duct sintering; it also ensures sintering quality while reducing the overall proportion of solid fuel in the sinter.

[0006] Existing methods for adding solid fuel and segregation distribution cannot solve the problem of high solid fuel content in surface sinter. If it were possible to uniformly add and mix some solid fuel again in a 20-50mm thick layer on the surface of the mixture using equipment or technology, a mixed ore with high solid fuel content could be obtained. This would improve sintering quality, reduce solid fuel consumption, and increase yield.

[0007] In current engineering applications, the conveying and uniform distribution of powdery particles generally employs methods such as screw conveyors, roller conveyors, multi-roller conveyors, and material distribution mechanisms, or combinations thereof. For example, a screw conveyor (CN215930518U) for a rotary hearth furnace uses a conveying mechanism equipped with a unidirectional screw to transport materials from one end to the other. An opening in the lower part of the casing allows material to enter a material distribution mechanism, where rotation achieves uniform distribution on the furnace bed. A uniform distribution device (CN213568533U) uses a screw conveyor mechanism with coaxial bidirectional spiral blades to transport materials from the center to both sides. A partition plate is installed at the lower part of the casing, and a distributor and grid assembly further ensure uniform material distribution on the conveying device. A sintered coke powder distribution device (CN117029497A) uses a ribbon conveyor mechanism composed of coaxial forward and reverse spiral ribbons to transport materials from one end to the other. An opening in the lower part allows material to be uniformly distributed on the material surface through the rotation of a material distribution roller equipped with a rake. However, the aforementioned existing technologies cannot achieve effective mixing of the material with the lower material after uniform distribution, nor can they achieve smoothing of the material surface after uniform distribution. Utility Model Content

[0008] To address the problems of poor mixing and smoothness of the upper sintering material surface after secondary feeding in existing technologies, this invention proposes a device for adding fuel to the sintering surface material. By setting up a fuel feeding mechanism, a fuel spreading mechanism, and a mixing mechanism connected in series, it achieves the purpose of adding some solid fuel again to the surface area of ​​the sintered ore mixture, while also achieving secondary mixing and secondary smoothing. This results in a uniformly mixed ore with a high solid fuel content on the surface, which helps to improve product quality, reduce solid fuel consumption, and increase the yield.

[0009] According to an embodiment of the present invention, an apparatus for adding fuel to sintered surface material is provided.

[0010] An apparatus for adding fuel to a sintered surface material, the apparatus comprising a fuel feeding mechanism, a fuel distributing mechanism, and a mixing mechanism. The discharge end of the fuel feeding mechanism is connected to the feed end of the fuel distributing mechanism. The mixing mechanism is located downstream of the fuel distributing mechanism, along the direction of the sintered material.

[0011] It should be noted that, unless otherwise specified, in this utility model, for the convenience of describing the solution of this utility model, "upstream" generally refers to the direction of the sintering material source, and conversely, "downstream" generally refers to the direction of the sintering material flow.

[0012] The mixing mechanism includes a support frame and a mixing section. The mixing section is located downstream of the fuel distribution mechanism via the support frame, and its lower end extends downward into the sintering surface material.

[0013] Preferably, the upper end of the support frame is connected to the outer wall of the fuel distribution mechanism, and the mixing section is located at the lower end of the support frame.

[0014] Preferably, the mixing unit includes a mixing mounting platform and a mixing shovel. The mixing mounting platform is located at the lower end of the support frame, the upper end of the mixing shovel is connected to the mixing mounting platform, and the lower end of the mixing shovel extends downward into the sintering surface material.

[0015] Preferably, the mixing shovel includes an upper mixing shovel and a lower mixing shovel. Vertically, the lower end of the upper mixing shovel extends into the sintered surface material to a lesser depth than the lower end of the lower mixing shovel. In the width direction of the sintered material, multiple upper and lower mixing shovels are alternately arranged on the mixing mounting platform. Preferably, in the width direction of the sintered material, the ends of the upper and lower mixing shovels near the source of the sintered material are not aligned (i.e., in the sintering direction, the upper and lower mixing shovels are arranged in a front-to-back arrangement).

[0016] Preferably, the mixing mechanism further includes a flat plate, which is disposed at the lower end of the support frame and downstream of the mixing section (downstream refers to downstream of the sintering material's running direction). Preferably, the flat plate is connected to the lower end of the support frame via a flat plate mounting platform. Preferably, the flat plate and the flat plate mounting platform are rotatably connected. Preferably, the flat plate and the flat plate mounting platform are connected via any one of a rotating eye bolt, bearing, or hinge.

[0017] Preferably, baffles are provided on both sides of the flat plate in the width direction of the sintering material.

[0018] Preferably, the support frame includes a support and an adjusting bracket. The upper end of the adjusting bracket is connected to the outer wall of the fuel distribution mechanism via the support, and the lower end of the adjusting bracket is connected to the mixing mechanism. The adjusting bracket is a structure whose height is adjustable in the vertical direction. Preferably, the adjusting bracket is a telescopic rod (which can be a folding telescopic, socketing telescopic, or snap-on telescopic structure capable of telescopic function; all of these structures are existing technologies).

[0019] Preferably, the fuel dispensing mechanism includes a housing, a partition, a material pusher, an overflow return device, and a dispensing roller. The housing has a recessed inner cavity. The partition is vertically disposed inside the housing and extends axially, dividing the recessed inner cavity into a pushing chamber and a returning chamber. A front material inlet and a rear material inlet are respectively provided at both axial ends of the partition. The front material inlet connects the front end of the pushing chamber to the front end of the returning chamber, and the rear material inlet connects the rear end of the pushing chamber to the rear end of the returning chamber. The material pusher is disposed within the pushing chamber, and the overflow return device is disposed within the returning chamber.

[0020] The upper part of the front end of the pushing chamber is provided with a material inlet connected to the fuel feeding mechanism, and the bottom of the pushing chamber is provided with a strip-shaped material outlet. The material distribution roller is located below the strip-shaped material outlet. Preferably, both the material pusher and the overflow return device are spiral feeding structures, and the rotation directions of the material pusher and the overflow return device are opposite.

[0021] Preferably, the fuel distribution mechanism further includes a material distribution funnel. The top inlet of the material distribution funnel is connected to the strip material outlet, and the distribution roller is disposed at the bottom outlet of the material distribution funnel.

[0022] Preferably, a first material level detector is also provided in the push chamber and / or return chamber.

[0023] Preferably, a guide plate is also provided at the rear feed port and / or the front feed port.

[0024] Preferably, the material pusher, the cloth roller, and the overflow return device are all independently connected to a drive motor.

[0025] Preferably, the surfaces of the material feeder, the cloth roller, and the overflow return device are all coated with a wear-resistant layer.

[0026] Preferably, the fuel feeding mechanism includes a receiving buffer tank, a weighing conveyor, and a feeding chute. The receiving buffer tank has a feed inlet at its top, and its bottom outlet is connected to the feed inlet of the feeding chute via the weighing conveyor. The discharge outlet of the feeding chute is connected to the material inlet of the fuel distribution mechanism.

[0027] Preferably, the weighing conveyor is a variable frequency weighing conveyor belt. Preferably, a sealing cover is also provided on the variable frequency weighing conveyor belt.

[0028] Preferably, the inner walls of the receiving buffer tank and the feed chute are coated with a wear-resistant layer.

[0029] Preferably, a second material level detector is also provided in the receiving buffer tank.

[0030] Preferably, the receiving buffer tank and the feed chute are both connected to an anti-static grounding device.

[0031] Preferably, the device further includes a dust removal mechanism. The dust removal mechanism includes an atomizing pipe and a flow control valve. The atomizing pipe is connected to an atomizing medium source, and the flow control valve is mounted on the atomizing pipe. The atomizing pipe is positioned below the fuel distribution mechanism and near its material outlet. Multiple steam nozzles are provided on the atomizing pipe. Preferably, the atomizing pipe is positioned between the material outlet of the fuel distribution mechanism and the mixing mechanism.

[0032] This invention includes a fuel feeding mechanism, a fuel distributing mechanism, and a mixing mechanism. When solid fuel needs to be added to the surface area of ​​the sintered ore mixture, fuel is added to the surface of the sintered ore mixture through the fuel feeding mechanism and the fuel distributing mechanism. Then, the mixing mechanism mixes the fuel with the original sintered ore mixture to achieve uniform fuel distribution. By blending the newly distributed solid fuel with the sintered ore mixture, and with adjustable blending thickness and ratio, thorough mixing and uniform combustion are achieved in the surface area of ​​the sintered ore mixture, thereby increasing output, reducing solid fuel consumption, and improving yield.

[0033] In this invention, the mixing mechanism is further configured as a mixing shovel. The structure of the shovel allows its lower end to extend into the sintered surface material to stir and mix the fuel and the original sintered ore mixture. Preferably, the mixing shovels are configured as alternating upper and lower mixing shovels. In the width direction of the sintered material, the ends of the upper and lower mixing shovels near the source of the sintered material are not aligned. This front-to-back cross-distribution of the upper and lower mixing shovels further improves the mixing uniformity of the material surface area. Furthermore, the mixing thickness is adjustable via a variable-length adjustable bracket in the support mechanism, allowing for height adjustment during implementation.

[0034] In this invention, a leveling mechanism is preferably provided. After the material is distributed and uniformly mixed, the sintering trolley continues to move downstream. At this time, the leveling mechanism levels the surface of the new sintering mixture, facilitating the subsequent ignition process and avoiding uneven sintering progress or temperature due to inconsistent material surface height. Furthermore, the leveling plate and the leveling mounting part are rotatably connected, allowing for angle adjustment based on the surface condition of the sintering mixture during actual application. The leveling plate and the leveling mounting part can be connected via rotating eye bolts, or via bearings or hinges.

[0035] In this invention, a partition is used to divide the interior of the fuel distribution mechanism into a pushing chamber and a return chamber. In practical application, solid fuel is first fed into the pushing chamber and conveyed forward by a material pusher. During the pushing process, the fuel is discharged through the material outlet at the bottom of the pushing chamber, and the material is distributed by the distribution roller. If there is too much material, the excess material is sent into the return chamber through the rear feed port at the end of the pushing chamber. Then, the overflow return device sends it into the front feed port at the front of the return chamber and back into the pushing chamber for distribution. Due to the buffering effect of the return chamber, blockage and jamming of the fuel distribution mechanism can be avoided to a certain extent. Furthermore, by setting a material equalization funnel trough below the pushing chamber, uniform and efficient distribution is achieved. Additionally, automatic adjustment of the material feeding speed can be achieved by installing a first material level detector in the feeding chamber and / or return chamber. Specifically: when the material level in the feeding chamber is detected to be at the median value, it indicates that the feeding roller can be started to begin uniform material feeding; if the material level is detected to be lower than the median value during the feeding process, the feeding amount is reduced by controlling the drive motor of the feeding roller; if the material level is detected to be higher than the median value, the feeding amount is increased by the feeding roller, thereby achieving automatic adjustment; if the material level approaches the high-level alarm value, the feeding roller speed is increased, the feeding amount is increased, and the overflow return device is activated. Excess material enters the return chamber under the action of the material pusher, and the overflow return device sends the material back into the feeding chamber through the front feed port; if the material level is higher than the high-level alarm value, it indicates a system malfunction, and the machine automatically stops to avoid system damage. The values ​​of the median value and the high-level alarm value are adjusted according to the specific circumstances of the actual application.

[0036] In this invention, a receiving buffer trough, a weighing conveyor, and a feed chute are provided in the fuel feeding mechanism. The weighing conveyor can adjust the material output in a timely manner according to process settings and changes. Preferably, a sealing cover is used to seal the above equipment to prevent dust generation.

[0037] In this invention, since dust is generated during the application of solid fuel, a dust removal mechanism is installed to suppress dust through spraying. Furthermore, the outlet of the atomizing pipe of the dust removal mechanism is located between the discharge port of the fabric application mechanism and the mixing mechanism to achieve immediate dust suppression.

[0038] In this invention, room temperature water mist or water vapor is sprayed through an atomizing pipe, thereby improving the dust removal effect of the dust removal mechanism.

[0039] In this invention, an antistatic device can be used to ground the device to prevent static sparks from causing an explosion.

[0040] In this invention, the solid fuel is generally coke powder, anthracite, etc., which are powdery particles.

[0041] It should be noted that the application scope of this device is not limited to sintering process, but can also be used in other primary or secondary fabrication processes.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. This utility model provides a device for adding fuel to the surface material of sintering. Through a fuel feeding mechanism, a fuel distribution mechanism and a mixing mechanism, the device achieves uniform fuel distribution, mixes newly distributed solid fuel with sintering mixed ore, and the thickness and ratio of the mixture are adjustable, thereby improving sintering quality, reducing solid fuel consumption and increasing yield.

[0044] 2. The present invention provides a device for adding fuel to the surface material of sintering, which integrates uniform material distribution, mixing and leveling, avoiding uneven sintering process or sintering temperature caused by inconsistent material surface height, and reducing the footprint of the device while achieving accurate and safe material supply.

[0045] 3. The present invention provides a device for adding fuel to the sintering surface material. By setting up a pushing chamber and a return chamber, the blockage and jamming of the material distribution mechanism can be avoided to a certain extent. The material level detector enables automatic adjustment of the material distribution device in complex environments. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of a device for adding fuel to sintered surface material, provided by this utility model.

[0047] Figure 2 This invention provides a schematic diagram of the fuel feeding mechanism in a device for adding fuel to sintered surface material.

[0048] Figure 3 A cross-sectional view of the fuel distribution mechanism in a device for adding fuel to sintered surface material, provided by this utility model.

[0049] Figure 4 This is a perspective view of the fuel distribution mechanism in a device for adding fuel to sintered surface material, which is provided by this utility model.

[0050] Figure 5 A side view of the fuel distribution mechanism in a device for adding fuel to sintered surface material, provided by this utility model.

[0051] Figure 6 This is a schematic diagram of the mixing mechanism in a device for adding fuel to sintered surface material, which is provided by this utility model.

[0052] Figure 7 for Figure 6 Side view of the mixing mechanism from direction A.

[0053] Reference numerals: 1: Fuel feeding mechanism; 101: Receiving buffer trough; 102: Weighing conveyor; 103: Feed chute; 104: Sealing cover; 105: Second material level detector; 106: Antistatic device; 2: Fuel distributing mechanism; 201: Housing; 202: Baffle plate; 203: Material pusher; 204: Overflow return device; 205: Distributing roller; 206: Pushing chamber; 207: Return chamber; 208: Rear material outlet; 209: 210: Front feed inlet; 211: Material equalization funnel trough; 212: First material level detector; 213: Guide plate; 3: Mixing mechanism; 301: Support frame; 3011: Support; 3012: Adjustment bracket; 302: Mixing section; 3021: Mixing mounting platform; 3022: Mixing shovel; 30221: Upper mixing shovel; 30222: Lower mixing shovel; 303: Flat plate; 304: Flat mounting platform; 305: Baffle plate; 4: Dust removal mechanism. Detailed Implementation

[0054] The technical solution of this utility model is illustrated below. The scope of protection of this utility model includes, but is not limited to, the following embodiments.

[0055] According to an embodiment of the present invention, an apparatus for adding fuel to sintered surface material is provided.

[0056] An apparatus for adding fuel to a sintered surface material includes a fuel feeding mechanism 1, a fuel distributing mechanism 2, and a mixing mechanism 3. The discharge end of the fuel feeding mechanism 1 is connected to the feed end of the fuel distributing mechanism 2. The mixing mechanism 3 is located downstream of the fuel distributing mechanism 2, along the direction of the sintered material.

[0057] The mixing mechanism 3 includes a support frame 301 and a mixing section 302. The mixing section 302 is disposed on the downstream side of the fuel distribution mechanism 2 via the support frame 301, and the lower end of the mixing section 302 extends downward into the sintering surface material.

[0058] Preferably, the upper end of the support frame 301 is connected to the outer wall of the fuel distribution mechanism 2, and the mixing part 302 is disposed at the lower end of the support frame 301.

[0059] Preferably, the mixing unit 302 includes a mixing mounting platform 3021 and a mixing shovel 3022. The mixing mounting platform 3021 is disposed at the lower end of the support frame 301, the upper end of the mixing shovel 3022 is connected to the mixing mounting platform 3021, and the lower end of the mixing shovel 3022 extends downward into the sintering surface material.

[0060] Preferably, the mixing shovel 3022 includes an upper mixing shovel 30221 and a lower mixing shovel 30222. Vertically, the lower end of the upper mixing shovel 30221 extends into the sintered surface material to a lesser depth than the lower end of the lower mixing shovel 30222. In the width direction of the sintered material, multiple upper mixing shovels 30221 and multiple lower mixing shovels 30222 are alternately arranged sequentially on the mixing mounting platform 3021. Preferably, in the width direction of the sintered material, the end of the upper mixing shovel 30221 near the source of the sintered material is not flush with the end of the lower mixing shovel 30222 near the source of the sintered material.

[0061] Preferably, the mixing mechanism 3 further includes a flat plate 303, which is disposed at the lower end of the support frame 301 and located downstream of the mixing section 302. Preferably, the flat plate 303 is connected to the lower end of the support frame 301 via a flat mounting platform 304. Preferably, the flat plate 303 and the flat mounting platform 304 are rotatably connected. Preferably, the flat plate 303 and the flat mounting platform 304 are connected via any one of a rotating eye bolt, a bearing, or a hinge.

[0062] Preferably, baffle plates 305 are provided on both sides of the flat plate 303 in the width direction of the sintering material.

[0063] Preferably, the support frame 301 includes a support 3011 and an adjusting bracket 3012. The upper end of the adjusting bracket 3012 is connected to the outer wall of the fuel distribution mechanism 2 via the support 3011, and the lower end of the adjusting bracket 3012 is connected to the mixing mechanism 3. The adjusting bracket 3012 is a structure whose height is adjustable in the vertical direction. Preferably, the adjusting bracket 3012 is a telescopic rod.

[0064] Preferably, the fuel distribution mechanism 2 includes a housing 201, a partition 202, a material pusher 203, an overflow return device 204, and a distribution roller 205. The housing 201 has a recessed inner cavity. The partition 202 is vertically disposed inside the housing 201 and extends axially along the housing 201, dividing the recessed inner cavity into a pushing chamber 206 and a return chamber 207. A front material inlet 209 and a rear material inlet 208 are respectively provided at both axial ends of the partition 202. The front material inlet 209 connects the front end of the pushing chamber 206 to the front end of the return chamber 207, and the rear material inlet 208 connects the rear end of the pushing chamber 206 to the rear end of the return chamber 207. The material pusher 203 is disposed within the pushing chamber 206, and the overflow return device 204 is disposed within the return chamber 207.

[0065] The upper part of the front end of the feeding chamber 206 is provided with a material inlet that communicates with the fuel feeding mechanism 1, and the bottom of the feeding chamber 206 is provided with a strip-shaped material outlet. The material distribution roller 205 is located below the strip-shaped material outlet. Preferably, the material pusher 203 and the overflow return device 204 are both spiral feeding structures, and the rotation directions of the material pusher 203 and the overflow return device 204 are opposite.

[0066] Preferably, the fuel distribution mechanism 2 further includes a material distribution funnel 210. The top inlet of the material distribution funnel 210 is connected to the strip material outlet, and the material distribution roller 205 is disposed at the bottom outlet of the material distribution funnel 210.

[0067] Preferably, a first material level detector 211 is also provided in the push chamber 206 and / or the return chamber 207.

[0068] Preferably, a guide plate 212 is also provided at the rear feed port 208 and / or the front feed port 209.

[0069] Preferably, the material pusher 203, the cloth roller 205, and the overflow return device 204 are all independently connected to a drive motor.

[0070] Preferably, the surfaces of the material feeder 203, the cloth roller 205, and the overflow return device 204 are all coated with a wear-resistant layer.

[0071] Preferably, the fuel feeding mechanism 1 includes a receiving buffer tank 101, a weighing conveyor 102, and a feed chute 103. The receiving buffer tank 101 has a feed inlet at its top, and the bottom outlet of the receiving buffer tank 101 is connected to the feed inlet of the feed chute 103 via the weighing conveyor 102. The discharge outlet of the feed chute 103 is connected to the material inlet of the fuel distribution mechanism 2.

[0072] Preferably, the weighing conveyor 102 is a variable frequency weighing conveyor belt. Preferably, a sealing cover 104 is also provided on the variable frequency weighing conveyor belt.

[0073] Preferably, a wear-resistant layer is coated on the inner sidewalls of the receiving buffer tank 101 and the feed chute 103.

[0074] Preferably, a second material level detector 105 is also provided in the receiving buffer tank 101.

[0075] Preferably, the receiving buffer tank 101 and the feed chute 103 are both connected to the anti-static grounding device 106.

[0076] Preferably, the device further includes a dust removal mechanism 4. The dust removal mechanism 4 includes an atomizing pipe and a flow control valve. The atomizing pipe is connected to an atomizing medium source, and the flow control valve is mounted on the atomizing pipe. The atomizing pipe is positioned below the fuel distribution mechanism 2 and near its material outlet. Multiple steam nozzles are provided on the atomizing pipe. Preferably, the atomizing pipe is positioned between the material outlet of the fuel distribution mechanism 2 and the mixing mechanism 3.

[0077] Example 1

[0078] like Figure 1-6 As shown, an apparatus for adding fuel to sintered surface material includes a fuel feeding mechanism 1, a fuel distributing mechanism 2, and a mixing mechanism 3. The discharge end of the fuel feeding mechanism 1 is connected to the feed end of the fuel distributing mechanism 2. The mixing mechanism 3 is located downstream of the fuel distributing mechanism 2, along the direction of the sintered material.

[0079] The mixing mechanism 3 includes a support frame 301 and a mixing section 302. The mixing section 302 is disposed on the downstream side of the fuel distribution mechanism 2 via the support frame 301, and the lower end of the mixing section 302 extends downward into the sintering surface material.

[0080] Example 2

[0081] The embodiment 1 is repeated, except that the upper end of the support frame 301 is connected to the outer wall of the fuel distribution mechanism 2, and the mixing part 302 is located at the lower end of the support frame 301.

[0082] Example 3

[0083] The same as Embodiment 2 is repeated, except that the mixing unit 302 includes a mixing mounting platform 3021 and a mixing shovel 3022. The mixing mounting platform 3021 is located at the lower end of the support frame 301, the upper end of the mixing shovel 3022 is connected to the mixing mounting platform 3021, and the lower end of the mixing shovel 3022 extends downward into the sintering surface material.

[0084] Example 4

[0085] Example 3 is repeated, except that the mixing shovel 3022 includes an upper mixing shovel 30221 and a lower mixing shovel 30222. Vertically, the lower end of the upper mixing shovel 30221 extends into the sintered surface material to a lesser depth than the lower end of the lower mixing shovel 30222. In the width direction of the sintered material, three upper mixing shovels 30221 and two lower mixing shovels 30222 are alternately arranged on the mixing mounting platform 3021. In the width direction of the sintered material, the ends of the upper mixing shovels 30221 near the source of the sintered material are not flush with the ends of the lower mixing shovels 30222 near the source of the sintered material.

[0086] Example 5

[0087] The process repeats Embodiment 4, except that the mixing mechanism 3 further includes a flat plate 303, which is disposed at the lower end of the support frame 301 and located downstream of the mixing section 302. The flat plate 303 is connected to the lower end of the support frame 301 via a flat mounting platform 304. The flat plate 303 and the flat mounting platform 304 are rotatably connected. The flat plate 303 and the flat mounting platform 304 are connected by rotating eye bolts.

[0088] In the width direction of the sintering material, baffles 305 are also provided on both sides of the flat plate 303.

[0089] Example 6

[0090] The embodiment 5 is repeated, except that the support frame 301 includes a support 3011 and an adjusting bracket 3012. The upper end of the adjusting bracket 3012 is connected to the outer wall of the fuel distribution mechanism 2 via the support 3011, and the lower end of the adjusting bracket 3012 is connected to the mixing mechanism 3. The adjusting bracket 3012 is a vertically adjustable structure and is a telescopic rod with a connecting sleeve.

[0091] Example 7

[0092] The embodiment 6 is repeated, except that the fuel distribution mechanism 2 includes a housing 201, a partition 202, a material pusher 203, an overflow return device 204, and a distribution roller 205. The housing 201 has a recessed inner cavity. The partition 202 is vertically disposed inside the housing 201 and extends axially along the housing 201, dividing the recessed inner cavity into a pushing chamber 206 and a returning chamber 207. A front material inlet 209 and a rear material inlet 208 are respectively provided at both axial ends of the partition 202. The front material inlet 209 connects the front end of the pushing chamber 206 to the front end of the returning chamber 207, and the rear material inlet 208 connects the rear end of the pushing chamber 206 to the rear end of the returning chamber 207. The material pusher 203 is disposed within the pushing chamber 206, and the overflow return device 204 is disposed within the returning chamber 207.

[0093] The upper part of the front end of the pushing chamber 206 is provided with a material inlet that communicates with the fuel feeding mechanism 1, and the bottom of the pushing chamber 206 is provided with a strip-shaped material outlet. The material distribution roller 205 is located below the strip-shaped material outlet. The material pusher 203 and the overflow return device 204 are both spiral feeding structures, and the rotation directions of the material pusher 203 and the overflow return device 204 are opposite.

[0094] Example 8

[0095] The embodiment 7 is repeated, except that the fuel distribution mechanism 2 also includes a material distribution funnel 210. The top inlet of the material distribution funnel 210 is connected to the strip material outlet, and the distribution roller 205 is disposed at the bottom outlet of the material distribution funnel 210.

[0096] Example 9

[0097] The embodiment 8 is repeated, except that a first material level detector 211 is also provided in the push chamber 206 and the return chamber 207.

[0098] A guide plate 212 is also provided at the rear feed port 208 and the front feed port 209.

[0099] The material pusher 203, the cloth roller 205, and the overflow return device 204 are all independently connected to a drive motor.

[0100] The surfaces of the material feeder 203, the cloth roller 205, and the overflow return device 204 are all coated with a wear-resistant layer.

[0101] Example 10

[0102] The embodiment 9 is repeated, except that the fuel feeding mechanism 1 includes a receiving buffer tank 101, a weighing conveyor 102, and a feeding chute 103. The receiving buffer tank 101 has a feed inlet at its top, and the bottom outlet of the receiving buffer tank 101 is connected to the feed inlet of the feeding chute 103 via the weighing conveyor 102. The discharge outlet of the feeding chute 103 is connected to the material inlet of the fuel distribution mechanism 2.

[0103] Example 11

[0104] The embodiment 10 is repeated, except that the weighing conveyor 102 is a variable frequency weighing conveyor belt. A sealing cover 104 is also provided on the variable frequency weighing conveyor belt.

[0105] Wear-resistant layers are coated on the inner walls of the receiving buffer tank 101 and the feed chute 103.

[0106] A second material level detector 105 is also installed in the receiving buffer tank 101.

[0107] The receiving buffer tank 101 and the feed chute 103 are both connected to the anti-static grounding device 106.

[0108] Example 12

[0109] The same method as Embodiment 11 is used, except that the device also includes a dust removal mechanism 4. The dust removal mechanism 4 includes an atomizing pipe and a flow control valve. The atomizing pipe is connected to an atomizing medium source, and the flow control valve is mounted on the atomizing pipe. The atomizing pipe is located below the fuel distribution mechanism 2 and near its material outlet. Five steam nozzles are provided on the atomizing pipe. The atomizing pipe is positioned between the material outlet of the fuel distribution mechanism 2 and the mixing mechanism 3.

[0110] The fuel addition process using the device for adding fuel to sintered surface material as described in Embodiment 12 of this utility model is as follows: Fuel enters the receiving buffer trough 101 of the fuel feeding mechanism 1 from above, is conveyed to the feed chute 103 by the weighing conveyor 102, and then sent to the fuel distribution device 2. After entering the fuel distribution device 2, the fuel is first pushed forward in the pushing chamber 206 by the material pusher 203, and discharged from the strip-shaped material outlet at the bottom of the pushing chamber 206, entering the equalization funnel trough 210, and then sent to the distribution roller 205 for distribution. If there is too much fuel in the fuel distribution device 2, it enters the return chamber 207 through the rear material outlet 208 at the tail end of the pushing chamber 206, and then the overflow return device 204 pushes the fuel to the front material outlet 209, and sends it back to the pushing chamber 206 for distribution. After the fuel is applied, it is mixed by the mixing shovel 3022. After being mixed evenly, the material surface is leveled by the leveling plate 303. At the same time, the height of the mixing shovel 3022 can be adjusted by changing the vertical length of the adjusting bracket 3012. In addition, during the fuel addition process, steam is sprayed onto the surface of the material layer through the atomizing pipe of the dust removal mechanism 4, and the steam flow is controlled by a flow control valve to avoid dust generation.

Claims

1. An apparatus for adding fuel to sintered surface material, characterized in that: The device includes a fuel feeding mechanism (1), a fuel spreading mechanism (2), and a mixing mechanism (3); the discharge end of the fuel feeding mechanism (1) is connected to the feeding end of the fuel spreading mechanism (2); along the direction of the sintered material, the mixing mechanism (3) is located downstream of the fuel spreading mechanism (2); The mixing mechanism (3) includes a support frame (301) and a mixing part (302); the mixing part (302) is disposed on the downstream side of the fuel distribution mechanism (2) via the support frame (301), and the lower end of the mixing part (302) extends downward into the sintering surface material.

2. The apparatus according to claim 1, characterized in that: The upper end of the support frame (301) is connected to the outer wall of the fuel distribution mechanism (2), and the mixing part (302) is located at the lower end of the support frame (301).

3. The apparatus according to claim 1, characterized in that: The mixing unit (302) includes a mixing mounting platform (3021) and a mixing shovel (3022); the mixing mounting platform (3021) is located at the lower end of the support frame (301), the upper end of the mixing shovel (3022) is connected to the mixing mounting platform (3021), and the lower end of the mixing shovel (3022) extends downward into the sintered surface material.

4. The apparatus according to claim 3, characterized in that: The mixing shovel (3022) includes an upper mixing shovel (30221) and a lower mixing shovel (30222). In the vertical direction, the lower end of the upper mixing shovel (30221) extends into the sintered surface material to a depth lower than the lower end of the lower mixing shovel (30222) extends into the sintered surface material. In the width direction of the sintered material, multiple upper mixing shovels (30221) and multiple lower mixing shovels (30222) are alternately arranged on the mixing mounting platform (3021).

5. The apparatus according to claim 4, characterized in that: In the width direction of the sinter, the end of the upper mixing shovel (30221) near the source of the sinter is not flush with the end of the lower mixing shovel (30222) near the source of the sinter.

6. The apparatus according to any one of claims 1-5, characterized in that: The mixing mechanism (3) also includes a flat plate (303), which is located at the lower end of the support frame (301) and downstream of the mixing section (302).

7. The apparatus according to claim 6, characterized in that: The flat plate (303) is connected to the lower end of the support frame (301) via the flat plate mounting platform (304).

8. The apparatus according to claim 7, characterized in that: The flat plate (303) is rotatably connected to the flat mounting platform (304).

9. The apparatus according to claim 8, characterized in that: The flat plate (303) and the flat mounting platform (304) are connected by any one of the following: rotating eye bolts, bearings, and hinges.

10. The apparatus according to claim 6, characterized in that: In the width direction of the sintering material, baffles (305) are also provided on both sides of the flat plate (303).

11. The apparatus according to any one of claims 1-5 and 7-10, characterized in that: The support frame (301) includes a support (3011) and an adjusting bracket (3012); the upper end of the adjusting bracket (3012) is connected to the outer wall of the fuel distribution mechanism (2) through the support (3011), and the lower end of the adjusting bracket (3012) is connected to the mixing mechanism (3); wherein, the adjusting bracket (3012) is a structure whose height is adjustable in the vertical direction.

12. The apparatus according to claim 11, characterized in that: The adjustment bracket (3012) is a telescopic rod.

13. The apparatus according to any one of claims 1-5, 7-10, and 12, characterized in that: The fuel distribution mechanism (2) includes a housing (201), a partition (202), a material pusher (203), an overflow return device (204), and a distribution roller (205); the housing (201) forms a groove-shaped inner cavity, and the partition (202) is vertically arranged inside the housing (201) and extends along the axial direction of the housing (201), thereby dividing the groove-shaped inner cavity of the housing (201) into a pushing chamber (206) and a returning chamber (207), and in the partition... The plate (202) has a front material inlet (209) and a rear material inlet (208) at its two axial ends. The front material inlet (209) is used to connect the front end of the push chamber (206) and the front end of the return chamber (207). The rear material inlet (208) is used to connect the rear end of the push chamber (206) and the rear end of the return chamber (207). The material pusher (203) is installed in the push chamber (206), and the overflow return device (204) is installed in the return chamber (207). The upper part of the front end of the pusher chamber (206) is provided with a material inlet that is connected to the fuel feeding mechanism (1), and the bottom of the pusher chamber (206) is provided with a strip material outlet. The cloth roller (205) is located below the strip material outlet.

14. The apparatus according to claim 13, characterized in that: The material pusher (203) and the overflow return device (204) are both spiral feeding structures, and the material pusher (203) and the overflow return device (204) rotate in opposite directions.

15. The apparatus according to claim 13, characterized in that: The fuel distribution mechanism (2) also includes a material distribution funnel (210); the top inlet of the material distribution funnel (210) is connected to the strip material outlet, and the material distribution roller (205) is set at the bottom outlet of the material distribution funnel (210).

16. The apparatus according to claim 13, characterized in that: A first level detector (211) is also provided in the push chamber (206) and / or return chamber (207).

17. The apparatus according to claim 13, characterized in that: A guide plate (212) is also provided at the rear feed port (208) and / or the front feed port (209).

18. The apparatus according to claim 13, characterized in that: The material pusher (203), the cloth roller (205), and the overflow return device (204) are all independently connected to a drive motor.

19. The apparatus according to claim 13, characterized in that: The surfaces of the material feeder (203), the cloth roller (205), and the overflow return device (204) are all coated with a wear-resistant layer.

20. The apparatus according to any one of claims 1-5, 7-10, 12, 14-19, characterized in that: The fuel feeding mechanism (1) includes a receiving buffer tank (101), a weighing conveyor (102), and a feeding chute (103). The receiving buffer tank (101) has a feeding port at the top, and the bottom discharge port of the receiving buffer tank (101) is connected to the feeding port of the feeding chute (103) through the weighing conveyor (102). The discharge port of the feeding chute (103) is connected to the material inlet of the fuel distribution mechanism (2).

21. The apparatus according to claim 20, characterized in that: The weighing conveyor (102) is a variable frequency weighing and metering conveyor belt.

22. The apparatus according to claim 20, characterized in that: A sealing cover (104) is also provided on the variable frequency weighing conveyor belt.

23. The apparatus according to claim 20, characterized in that: Wear-resistant layers are coated on the inner walls of the receiving buffer tank (101) and the feed chute (103).

24. The apparatus according to claim 20, characterized in that: A second material level detector (105) is also installed in the receiving buffer tank (101).

25. The apparatus according to claim 20, characterized in that: The receiving buffer tank (101) and the feed chute (103) are both connected to the anti-static grounding device (106).

26. The apparatus according to any one of claims 1-5, 7-10, 12, 14-19, 21-25, characterized in that: The device also includes a dust removal mechanism (4); the dust removal mechanism (4) includes an atomizing pipe and a flow control valve. The atomizing pipe is connected to the atomizing medium source. The flow control valve is installed on the atomizing pipe. The atomizing pipe is installed below the fuel distribution mechanism (2) and close to the material outlet of the fuel distribution mechanism (2). Multiple steam nozzles are provided on the atomizing pipe.

27. The apparatus according to claim 26, characterized in that: The atomizing pipe is located between the material outlet of the fuel distribution mechanism (2) and the mixing mechanism (3).

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