CN107879028A - An integrated device for airtight screening and conveying of high-temperature materials - Google Patents
An integrated device for airtight screening and conveying of high-temperature materials Download PDFInfo
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- CN107879028A CN107879028A CN201711258957.6A CN201711258957A CN107879028A CN 107879028 A CN107879028 A CN 107879028A CN 201711258957 A CN201711258957 A CN 201711258957A CN 107879028 A CN107879028 A CN 107879028A
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- 239000000463 material Substances 0.000 title claims abstract description 74
- 238000012216 screening Methods 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 16
- 239000000112 cooling gas Substances 0.000 claims abstract description 7
- 239000011261 inert gas Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 230000000704 physical effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003245 coal Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 239000010410 layer Substances 0.000 description 9
- 239000000428 dust Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000004880 explosion Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000002356 single layer Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G27/00—Jigging conveyors
- B65G27/04—Load carriers other than helical or spiral channels or conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/02—Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/40—Safety features of loads, equipment or persons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
技术领域technical field
本发明涉及物料输送技术领域，尤其涉及一种高温物料密闭筛分输送一体化装置。The invention relates to the technical field of material transportation, in particular to an integrated device for sealing, screening and conveying high-temperature materials.
背景技术Background technique
振动输送机是一种无牵引构件的连续输送机械。它是利用机械共振原理来对松散颗粒物料进行中、短距离输送的输送机械，振动输送机具有产量高、能耗低、工作可靠、结构简单、外形尺寸小、便于维修等优点。当其机槽制成封闭结构时，可防止粉尘外泄，从而改善工作环境。其工作原理是通过激振器产生的激振力作用于机槽上，机槽在主振弹簧的约束下做定向强迫振动，当机槽向前振动时，依靠物料与机槽间的摩擦力把运动能量传递给物料，使物料加速运动，此时物料的运动方向与机槽的振动方向相同；当机槽向后振动时，物料因受惯性作用，仍将继续向前运动，机槽则从物料下面向后运动，由于运动中阻力作用，物料超过一段机槽后又落回到机槽上；当机槽再次向前振动时，物料又因受到加速而被向前输送；如此重复循环，实现物料的输送。The vibrating conveyor is a continuous conveying machine without traction components. It is a conveying machine that uses the principle of mechanical resonance to convey loose granular materials in short and medium distances. The vibrating conveyor has the advantages of high output, low energy consumption, reliable operation, simple structure, small size, and easy maintenance. When the machine slot is made into a closed structure, it can prevent dust from leaking out, thereby improving the working environment. Its working principle is that the exciting force generated by the exciter acts on the machine tank, and the machine tank performs directional forced vibration under the constraint of the main vibration spring. When the machine tank vibrates forward, it depends on the friction between the material and the machine tank. The motion energy is transferred to the material to accelerate the material movement. At this time, the movement direction of the material is the same as the vibration direction of the machine tank; when the machine tank vibrates backward, the material will continue to move forward due to inertia, and the machine tank will continue to move forward. Moving backward from the bottom of the material, due to the resistance during the movement, the material falls back to the machine trough after passing a section of the machine trough; when the machine trough vibrates forward again, the material is accelerated and transported forward; so repeat the cycle , to realize the transportation of materials.
振动输送机适合输送块状、料状或粉状物料，而在输送高温物料的过程中，由于物料性质的原因，有的物料在密闭环境下存在粉尘爆炸的风险，需要采取保护措施；而有的物料需要降温后再进入后续设备中，有的物料需要输送到筛分设备中进行筛分；如果将这些功能整合在振动输送机上，则会实现工艺设备的精减，进一步提高生产效率。Vibrating conveyors are suitable for conveying bulk, material or powder materials, and in the process of conveying high-temperature materials, due to the nature of the materials, some materials have the risk of dust explosion in a closed environment, and protective measures need to be taken; while some Some materials need to cool down before entering the follow-up equipment, and some materials need to be transported to the screening equipment for screening; if these functions are integrated on the vibrating conveyor, the process equipment will be reduced and the production efficiency will be further improved.
发明内容Contents of the invention
本发明提供了一种高温物料密闭筛分输送一体化装置，用于输送两种以上物理性质差别较大的物料(如铁和煤)，并在输送过程中实现物料筛分过程，同时还具备保护或冷却功能，且输送过程防尘效果好，安全性能高；有利于缩短工艺路线，提高生产效率。The invention provides an integrated device for airtight screening and conveying of high-temperature materials, which is used for conveying more than two kinds of materials (such as iron and coal) with large differences in physical properties, and realizes the material screening process during the conveying process, and also has Protection or cooling function, and the dust-proof effect in the conveying process is good, and the safety performance is high; it is beneficial to shorten the process route and improve production efficiency.
为了达到上述目的，本发明采用以下技术方案实现：In order to achieve the above object, the present invention adopts the following technical solutions to realize:
一种高温物料密闭筛分输送一体化装置，包括惯性振动输送机；所述惯性振动输送机的机槽顶部设盖板封闭，机槽内设1至多层冲孔筛板，将机槽沿高向分隔为2至多层；惯性振动输送机接料端的机槽顶部设接料口，接料口与上方卸料设备的出料口通过膨胀节软连接；惯性振动输送机出料端的各层机槽均设对应的出料口，且出料口与下方的接料设备的入料口通过膨胀节软连接；机槽上设保护气体引入口或冷却气体引入口与外部气体输送管道连接，且靠近保护气体引入口或惰性气体引入口的气体输送管道上设电磁阀，机槽内设温度检测装置，电磁阀及温度检测装置分别连接控制系统。An integrated device for airtight screening and conveying of high-temperature materials, including an inertial vibrating conveyor; the top of the machine tank of the inertial vibrating conveyor is closed with a cover plate, and one to multi-layer punching sieve plates are arranged in the machine tank, and the machine tank is arranged along the high The direction is divided into 2 to multi-layer; the top of the machine tank at the feeding end of the inertial vibrating conveyor is provided with a feeding port, and the feeding port is softly connected with the discharge port of the upper unloading device through an expansion joint; each layer of the inertial vibration conveyor at the discharging end The slots are equipped with corresponding outlets, and the outlets are softly connected with the inlets of the receiving equipment below through expansion joints; the slots are equipped with protective gas inlets or cooling gas inlets connected to external gas pipelines, and A solenoid valve is installed on the gas delivery pipeline close to the inlet of the protective gas or the inlet of the inert gas, and a temperature detection device is installed in the machine tank, and the solenoid valve and the temperature detection device are respectively connected to the control system.
所述机槽、冲孔筛板采用耐高温、耐冲击及耐磨损的材料制成。The machine groove and the punching sieve plate are made of high-temperature-resistant, impact-resistant and wear-resistant materials.
所述机槽内设支撑框架，冲孔筛板可拆卸地与支撑框架固定连接；沿机槽纵向在冲孔筛板底部设加劲肋，加劲肋由支撑件固定支撑。A support frame is provided inside the machine tank, and the punched sieve plate is detachably fixedly connected to the support frame; along the longitudinal direction of the machine tank, stiffening ribs are provided at the bottom of the punched sieve plate, and the stiffeners are fixedly supported by the support members.
所述保护气体引入口用于向机槽内引入惰性保护气体，所述冷却气体引入口用于向机槽内引入冷空气。The protective gas inlet is used to introduce inert protective gas into the machine tank, and the cooling gas inlet is used to introduce cold air into the machine tank.
所述温度检测装置为红外温度检测装置，设置在靠近接料口的机槽内。The temperature detection device is an infrared temperature detection device, which is arranged in a machine tank close to the material receiving port.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
1)解决了常规的惯性振动输送机只设单层机槽，当输送物理性质(堆密度和粒径)差别较大的混合物料时存在的物料前进速度不一致、相互干扰的问题；1) It solves the problem that the conventional inertia vibrating conveyor only has a single-layer machine trough, and when conveying mixed materials with large differences in physical properties (bulk density and particle size), the problems of inconsistent material forward speed and mutual interference;
2)在输送混合物料的同时还实现了混合物料的筛分，省去了将物料送至筛分站利用筛分设备进行筛分的工艺流程，节省了占地面积及工程成本；2) While conveying the mixed material, it also realizes the screening of the mixed material, which saves the process of sending the material to the screening station and using the screening equipment for screening, saving the floor area and engineering cost;
3)机槽具有全封闭结构，锁风效果良好，有效避免混合物料输送过程中大量粉尘溢散，污染周围环境的问题；3) The machine tank has a fully enclosed structure, which has a good air lock effect, effectively avoiding the problem of a large amount of dust spilling and polluting the surrounding environment during the conveying process of the mixed material;
4)可以向机槽内通入惰性保护气体，消除粉尘爆炸风险；4) Inert protective gas can be introduced into the machine tank to eliminate the risk of dust explosion;
5)可以向机槽内通入冷空气对物料进行冷却，满足下道工序设备的进料要求。5) The cold air can be passed into the machine tank to cool the material to meet the feeding requirements of the next process equipment.
附图说明Description of drawings
图1是本发明所述一种高温物料密闭筛分输送一体化装置的结构示意图。Fig. 1 is a schematic structural view of an integrated device for airtight screening and conveying of high-temperature materials according to the present invention.
图2是本发明所述机槽的横截面结构图。Fig. 2 is a cross-sectional structure diagram of the machine tank of the present invention.
图3是本发明所述机槽的俯视图。Fig. 3 is a top view of the machine tank of the present invention.
图中：1.惯性振动输送机2.机槽3.盖板4.冲孔筛板5.支撑框架6.连接螺栓7.接料口8.出料口9.膨胀节10.温度检测装置11.气体输送管道12.电磁阀13.加劲肋14.支撑件In the figure: 1. Inertial vibrating conveyor 2. Machine trough 3. Cover plate 4. Punching sieve plate 5. Support frame 6. Connecting bolt 7. Material inlet 8. Material outlet 9. Expansion joint 10. Temperature detection device 11. Gas delivery pipe 12. Solenoid valve 13. Stiffener 14. Support
具体实施方式Detailed ways
下面结合附图对本发明的具体实施方式作进一步说明：The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
如图1所示，本发明所述一种高温物料密闭筛分输送一体化装置，包括惯性振动输送机1；所述惯性振动输送机1的机槽2顶部设盖板3封闭，机槽2内设1至多层冲孔筛板4，将机槽2沿高向分隔为2至多层；惯性振动输送机1接料端的机槽2顶部设接料口7，接料口7与上方卸料设备的出料口通过膨胀节9软连接；惯性振动输送机1出料端的各层机槽2均设对应的出料口8，且出料口8与下方的接料设备的入料口通过膨胀节9软连接；机槽2上设保护气体引入口或冷却气体引入口与外部气体输送管道11连接，且靠近保护气体引入口或惰性气体引入口的气体输送管道11上设电磁阀12，机槽2内设温度检测装置10，电磁阀12及温度检测装置10分别连接控制系统。As shown in Figure 1, a kind of high-temperature material airtight screening conveying integrated device of the present invention comprises inertial vibrating conveyor 1; There are 1 to multi-layer punching sieve plates 4 inside, which divide the machine tank 2 into 2 to multi-layers along the height direction; the top of the machine tank 2 at the material receiving end of the inertial vibrating conveyor 1 is provided with a material receiving port 7, and the material receiving port 7 is connected to the upper discharge The discharge port of the equipment is softly connected through the expansion joint 9; each layer of the machine tank 2 at the discharge end of the inertial vibrating conveyor 1 is provided with a corresponding discharge port 8, and the discharge port 8 and the feed port of the receiving equipment below pass through The expansion joint 9 is softly connected; the machine tank 2 is provided with a protective gas inlet or a cooling gas inlet to connect with the external gas delivery pipeline 11, and a solenoid valve 12 is provided on the gas delivery pipeline 11 close to the protective gas inlet or the inert gas inlet. The machine tank 2 is provided with a temperature detection device 10, and the electromagnetic valve 12 and the temperature detection device 10 are respectively connected to the control system.
所述机槽2、冲孔筛板4采用耐高温、耐冲击及耐磨损的材料制成。The machine tank 2 and the perforated sieve plate 4 are made of materials with high temperature resistance, impact resistance and wear resistance.
所述机槽2内设支撑框架5，冲孔筛板4可拆卸地与支撑框架5固定连接；沿机槽2纵向在冲孔筛板4底部设加劲肋13，加劲肋13由支撑件14固定支撑。A supporting frame 5 is provided in the machine tank 2, and the punching sieve plate 4 is detachably fixedly connected with the supporting frame 5; a stiffening rib 13 is provided at the bottom of the punching sieve plate 4 along the longitudinal direction of the machine tank 2, and the stiffening rib 13 is supported by a support member 14 Fixed support.
所述保护气体引入口用于向机槽2内引入惰性保护气体，所述冷却气体引入口用于向机槽2内引入冷空气。The protective gas inlet is used to introduce an inert protective gas into the machine tank 2 , and the cooling gas inlet is used to introduce cold air into the machine tank 2 .
所述温度检测装置10为红外温度检测装置，设置在靠近接料口7的机槽2内。The temperature detection device 10 is an infrared temperature detection device, which is arranged in the machine tank 2 close to the material receiving port 7 .
以下实施例在以本发明技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。下述实施例中所用方法如无特别说明均为常规方法。The following examples are carried out on the premise of the technical solutions of the present invention, and detailed implementation methods and specific operation processes are provided, but the protection scope of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.
【实施例】【Example】
本实施例中，采用本发明所述一种高温物料密闭筛分输送一体化装置，输送煤基直立炉生产直接还原铁工艺中反应后还原铁与残炭的混合物料，混合物料中还原铁与残炭物理性质差别很大：还原铁绝大部分粒径较大(大于8mm)，堆密度为1.7t/m3,而残炭绝大部分粒径较小(小于1mm)，堆密度为0.515t/m3。In this embodiment, a high-temperature material airtight screening and conveying integrated device according to the present invention is used to transport the mixed material of reduced iron and residual carbon after the reaction in the process of producing direct reduced iron in a coal-based vertical furnace. In the mixed material, reduced iron and The physical properties of residual carbon vary greatly: most of the particle size of reduced iron is large (greater than 8mm), and the bulk density is 1.7t/m 3 , while most of the particle size of residual carbon is small (less than 1mm), and the bulk density is 0.515 t/m 3 .
采用常规工艺时，混合物料需经惯性振动输送机送往筛分站。利用筛分设备进行筛分分离，在输送和筛分过程中，由于设备密封性差，且混合物料中残炭的粒径小、水分低等特性，导致有大量粉尘产生，污染周围环境。大量粉尘的存在还容易产生粉尘爆炸等环境风险。When using the conventional process, the mixed material needs to be sent to the screening station through the inertia vibrating conveyor. Screening equipment is used for screening and separation. During the transportation and screening process, due to the poor sealing of the equipment, and the small particle size and low moisture content of the residual carbon in the mixed material, a large amount of dust is generated and pollutes the surrounding environment. The presence of a large amount of dust is also prone to environmental risks such as dust explosions.
在事故状态下，直立炉炉底排出的混合物料中，还原铁仍具有较高的温度，在此温度下，还原铁容易与空气中的水分、氧气发生氧化反应，释放出大量的热量，增加了还原铁处理工段的火灾、爆炸等环境风险。In the accident state, the reduced iron still has a relatively high temperature in the mixed material discharged from the bottom of the vertical furnace. Environmental risks such as fire and explosion in the reduced iron processing section have been reduced.
采用常规惯性振动输送机(单层机槽)输送混合物料时，由于单层机槽中混合物料的物理性质差别很大，存在两种物料的前进速度不一致，易产生相互干扰等问题。When the conventional inertia vibrating conveyor (single-layer machine trough) is used to convey the mixed material, due to the great difference in the physical properties of the mixed material in the single-layer machine trough, there are problems such as inconsistent advancing speeds of the two materials, which are prone to mutual interference.
本实施例中，所述惯性振动输送机1的机槽2顶部设盖板3封闭，机槽2内设1层冲孔筛板4，将机槽2沿高向分隔为2层；惯性振动输送机1接料端的机槽2顶部设接料口7，接料口7与上方直立炉的出料口通过膨胀节9软连接；惯性振动输送机1出料端的上、下2层机槽2均设对应的出料口8，且出料口8与下方的转运皮带机的入料口通过膨胀节9软连接；机槽2上设氮气引入口与外部氮气输送管道连接，且靠近氮气引入口的氮气输送管道上设电磁阀12，机槽2内设红外温度检测装置，电磁阀12及红外温度检测装置分别连接PLC控制系统。In this embodiment, the top of the machine tank 2 of the inertial vibrating conveyor 1 is closed with a cover plate 3, and a layer of perforated sieve plate 4 is arranged inside the machine tank 2, and the machine tank 2 is divided into two layers along the height direction; the inertial vibration The top of the machine trough 2 at the material receiving end of the conveyor 1 is provided with a material receiving port 7, and the material receiving port 7 is softly connected with the discharge port of the vertical furnace above through the expansion joint 9; the upper and lower layers of the machine trough at the discharge end of the conveyor 1 are inertially vibrating 2 are equipped with a corresponding discharge port 8, and the discharge port 8 is softly connected with the feed port of the transfer belt conveyor below through the expansion joint 9; the nitrogen inlet port on the machine tank 2 is connected to the external nitrogen delivery pipeline, and is close to the nitrogen gas An electromagnetic valve 12 is arranged on the nitrogen delivery pipeline at the inlet, and an infrared temperature detection device is arranged in the machine tank 2, and the electromagnetic valve 12 and the infrared temperature detection device are respectively connected to the PLC control system.
所述机槽2、冲孔筛板4采用304不锈钢材料制成，冲孔筛板4在机槽2中的安装高度由物料的体积比决定；支撑框架5由角钢制成，为了防止冲孔筛板4受物料冲击力而变形，在冲孔筛板4底部设置加劲肋13及其支撑件14。The machine tank 2 and the punching screen plate 4 are made of 304 stainless steel, and the installation height of the punching screen plate 4 in the machine tank 2 is determined by the volume ratio of the material; the support frame 5 is made of angle steel, in order to prevent punching The sieve plate 4 is deformed by the impact force of the material, and a stiffening rib 13 and its support 14 are arranged at the bottom of the punched sieve plate 4 .
本实施例中，混合物料进入机槽2后，在振动及筛分作用下，粒径大的还原铁在冲孔筛板4上向出料端前行，粒径较小的残炭落入冲孔筛板4下方的机槽2内并向出料端前行，分离后的还原铁和残炭分别在对应的出料口8落入下方的转运皮带机上。In this embodiment, after the mixed material enters the machine tank 2, under the action of vibration and screening, the reduced iron with large particle size moves forward on the punching sieve plate 4 to the discharge end, and the residual carbon with small particle size falls into the In the slot 2 below the punching sieve plate 4 and advance toward the discharge end, the separated reduced iron and carbon residue fall into the transfer belt conveyor below at the corresponding discharge port 8 respectively.
事故状态下混合物料的温度过高，输送过程中通过红外温度检测装置实时测温，当机槽2内的混合物料温度高于上临界温度时，控制系统开启电磁阀12向机槽2内通入氮气，氮气能够对高温的混合物料起到降温及保护作用，防止出现粉尘爆炸现象；当混合物料的温度低于下临界温度时，由控制系统关闭电磁阀12停止通入氮气。In the accident state, the temperature of the mixed material is too high, and the infrared temperature detection device is used to measure the temperature in real time during the conveying process. When the temperature of the mixed material in the machine tank 2 is higher than the upper critical temperature, the control system opens the solenoid valve 12 to the machine tank 2. Nitrogen can be used to cool down and protect the high-temperature mixed material to prevent dust explosion; when the temperature of the mixed material is lower than the lower critical temperature, the control system closes the solenoid valve 12 to stop feeding nitrogen.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
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