CN110006218A - A kind of blue carbon drying device - Google Patents
A kind of blue carbon drying device Download PDFInfo
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/122—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
- F26B21/30—Controlling, e.g. regulating, parameters of gas supply
- F26B21/35—Temperature; Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
- F26B21/50—Ducting arrangements from the source of air or other gases to the materials or objects being dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
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Abstract
本发明涉及兰炭干燥技术领域，具体是一种兰炭干燥装置，具有一个外壳，外壳顶部设有进料口，外壳底部设有出料口，外壳内部设有若干个相互独立的干燥腔，每个干燥腔周边设有通风道，所述通风道内从上至下依次设有上进风道、中回风道、下进风道，所述上进风道、中回风道、下进风道与每个干燥腔接触的一面均设有分风孔，干燥腔通过所述分风孔与通风道相通；外壳内位于干燥腔上方设有出风口；每个干燥腔底部装有一个出料控料器，外壳底部位于出料控料器下方装有一个排料斗，排料斗底部装有一个生产排料管和一个故障排料管，生产排料管和故障排料管上均设有切换阀；本发明干燥效率高，生产安全性好，适用于对现有兰炭干燥装置的改进。
The invention relates to the technical field of blue charcoal drying, in particular to a blue charcoal drying device. A ventilation duct is arranged around each drying chamber, and an upper air inlet duct, a middle return air duct, and a lower air inlet duct are arranged in the ventilation duct from top to bottom. The upper air inlet duct, the middle return air duct, and the lower air inlet duct The side in contact with each drying cavity is provided with an air distribution hole, and the drying cavity is communicated with the ventilation channel through the air distribution hole; an air outlet is arranged in the shell above the drying cavity; a discharge control is installed at the bottom of each drying cavity. The bottom of the shell is located under the discharge controller. A discharge hopper is installed. The bottom of the discharge hopper is equipped with a production discharge pipe and a fault discharge pipe. There are switching valves on both the production discharge pipe and the fault discharge pipe. The invention has high drying efficiency and good production safety, and is suitable for improving the existing blue carbon drying device.
Description
技术领域technical field
本发明涉及兰炭干燥技术领域，具体是一种兰炭干燥装置。The invention relates to the technical field of blue carbon drying, in particular to a blue carbon drying device.
背景技术Background technique
兰炭广泛应用于矿热炉做还原剂，如电石、铁合金、硅铁等。在使用中要求其保持一定的粒度，以利于还原后生成的CO气体逸出而不在物料中聚焦；同时作为还原剂的兰炭要有低的水份含量，避免或减少水份在矿热炉中大量电解出H2和O2。(水份在矿热炉中分解属于副反应，既大量增加了电耗，又有大量的O2气生成易使还原产生的气体达到爆炸极限。以电石生产为例 ：电石的主要原料为CaO和兰炭，在电石炉里，发生如下主还原反应：CaO+C→ CaC2+CO，如料层没有一定的透气性，会使大量的CO聚焦在物料里，达到一定的压力后，CO气体会剧烈喷出，将料层喷开大量聚焦气体一次性逸出，形成爆炸，(此即俗称“塌料”)，这是生产运行中十分危险的事故，因此，进料的颗粒要求十分严格，不得带入粉末状原料。因此，进入矿热炉内的原料，要求其含水率极低，同时还需要保持颗粒状原料Blue carbon is widely used in submerged arc furnace as reducing agent, such as calcium carbide, ferroalloy, ferrosilicon, etc. It is required to maintain a certain particle size in use, so as to facilitate the escape of CO gas generated after reduction and not focus in the material; at the same time, blue carbon as a reducing agent should have a low moisture content to avoid or reduce moisture in the submerged arc furnace. A large amount of H2 and O2 are produced by electrolysis. (The decomposition of water in the submerged arc furnace is a side reaction, which not only greatly increases the power consumption, but also generates a large amount of O2 gas, which is easy to make the gas produced by the reduction reach the explosion limit. Take calcium carbide production as an example: the main raw materials of calcium carbide are CaO and Blue carbon, in the calcium carbide furnace, the following main reduction reaction occurs: CaO+C→CaC2+CO, if the material layer does not have a certain air permeability, a large amount of CO will be concentrated in the material. After reaching a certain pressure, the CO gas will Violent ejection, the material layer is ejected and a large amount of focusing gas escapes at one time, forming an explosion (this is commonly known as "collapse material"), which is a very dangerous accident in production and operation. No powdery raw materials are allowed to be brought in. Therefore, the raw materials entering the submerged arc furnace are required to have a very low moisture content, and at the same time, the granular raw materials need to be kept.
现有的兰碳干燥机有两种形式，一种是卧式回转干燥机，由可旋转的回转式圆筒为主要结构，兰炭与烟气由回转干燥筒同一侧送入，兰炭通过干燥筒内的扬料操板反复扬起在筒内形成均匀的料幕，再与烟气进行充分的换热干燥，这种形式的干燥机存在问题是，兰炭停留时间短，产能较低，同时因为兰炭需要反复扬起形成均匀料幕，其破损率较大。另一种形式是立式干燥机，为一圆筒形结构，内部包括布料、预热、干燥、冷却等几部份组成，湿兰炭由布料器送入干燥腔后，在重力的作用下缓慢向下移动，外部通入热风与湿兰炭接触带走水分实现干燥，这种的干燥机在使用中存在以下问题：1、该干燥机无法大型化，圆筒结构无法无限提升高度，同时直径的加大使得物料的分布存在问题；2、物料堆积在干燥腔内，中下部的物料受到的压力较大，易被压碎，影响颗粒大小；3、如果对进入干燥腔内的干燥介质不进行调质处理，则会加大干燥腔内的物料的着火风险，而现有的圆筒形式立式干燥机一但着火，则会形成烟囱效应，使得火势无法控制，从而产生无法挽回的后果，同时该干燥系统设计上无法做到完善的着火预防和处置措施；4、冷却腔内的物料采用堆积冷却，干燥后的高温物料与高氧的自然风接触，极易产生燃烧，产生着火风险；5、热风在圆筒内由截面周进行分布，筒体的上、中、下的温度不易控制，烟气只穿过兰炭层一次就由引风管道外排到大气外，干燥效率与综合能耗均较高。There are two types of existing blue carbon dryers, one is a horizontal rotary dryer, which is mainly composed of a rotatable rotary cylinder. The lifting control panel in the drying cylinder is repeatedly raised to form a uniform material curtain in the cylinder, and then it is fully heat-exchanged and dried with the flue gas. The problem with this type of dryer is that the blue carbon stays for a short time and the production capacity is low. At the same time, because the blue carbon needs to be repeatedly raised to form a uniform material curtain, the damage rate is relatively large. Another form is a vertical dryer, which is a cylindrical structure, and the interior includes several parts such as distribution, preheating, drying, and cooling. Slowly moving downward, the external hot air is brought into contact with the wet blue charcoal to take away the moisture to achieve drying. This kind of dryer has the following problems in use: 1. The dryer cannot be enlarged, the cylindrical structure cannot be infinitely increased in height, and at the same time The increase of the diameter makes the distribution of the material problematic; 2. The material is accumulated in the drying chamber, and the material in the middle and lower parts is subjected to a large pressure, which is easily crushed and affects the particle size; 3. If the drying medium enters the drying chamber If the quenching and tempering treatment is not carried out, the fire risk of the materials in the drying chamber will be increased, and once the existing cylindrical vertical dryer catches fire, a chimney effect will be formed, making the fire uncontrollable, resulting in irreversible damage. At the same time, the design of the drying system cannot achieve perfect fire prevention and disposal measures; 4. The materials in the cooling chamber are cooled by accumulation, and the dried high-temperature materials are in contact with the high-oxygen natural wind, which is very easy to burn and cause fire. Risk; 5. The hot air is distributed in the cylinder from the circumference of the section. The temperature of the upper, middle and lower parts of the cylinder is not easy to control. The flue gas only passes through the blue carbon layer once and is discharged to the atmosphere from the air duct. The drying efficiency is and comprehensive energy consumption are higher.
发明内容SUMMARY OF THE INVENTION
本发明的目的就是为了解决现有干燥机存在的上述几个问题，提供一种兰炭干燥装置。The purpose of the present invention is to provide a blue charcoal drying device in order to solve the above-mentioned problems existing in the existing dryer.
本发明的具体方案是：一种兰炭干燥装置，具有一个外壳，外壳顶部设有进料口，外壳底部设有出料口，外壳内部设有若干个相互独立的干燥腔，每个干燥腔周边设有通风道，所述通风道内从上至下依次设有上进风道、中回风道、下进风道，所述上进风道、中回风道、下进风道与每个干燥腔接触的一面均设有分风孔，干燥腔通过所述分风孔与通风道相通；外壳内位于干燥腔上方设有出风口；每个干燥腔底部装有一个出料控料器，外壳底部位于出料控料器下方装有一个排料斗，排料斗底部装有一个生产排料管和一个故障排料管，生产排料管和故障排料管上均设有切换阀。The specific scheme of the present invention is as follows: a blue carbon drying device has a shell, the top of the shell is provided with a feeding port, the bottom of the shell is provided with a discharge port, and a number of mutually independent drying chambers are arranged inside the shell, each drying chamber There are ventilation ducts in the periphery, and there are upper air inlet ducts, middle return air ducts, and lower air inlet ducts in sequence from top to bottom in the ventilation ducts. There are air distribution holes on the contact side of the cavity, and the drying cavity is communicated with the ventilation channel through the air distribution holes; the outer shell is provided with an air outlet above the drying cavity; A discharge hopper is installed at the bottom under the discharge controller, and a production discharge pipe and a fault discharge pipe are installed at the bottom of the discharge hopper, and switching valves are provided on both the production discharge pipe and the fault discharge pipe.
本发明所述每个干燥腔内设有螺旋导料板。According to the present invention, each drying chamber is provided with a spiral guide plate.
本发明所述中回风道的出风口处装有用于检测CO浓度的CO检测装置和温度检测装置，CO检测装置和温度检测装置将检测值发送到主控系统。The air outlet of the middle return air duct of the present invention is equipped with a CO detection device and a temperature detection device for detecting CO concentration, and the CO detection device and the temperature detection device send the detection value to the main control system.
本发明所述外壳内位于出风口与干燥腔之间装有布风器，布风器包括若干纵横交错布置的布风板，其中一布风板上装有与出风口连通的出气管，所述布风板是横截面为“人”字形的长条形板。According to the present invention, an air distribution device is installed in the casing between the air outlet and the drying chamber. The air distribution device includes a plurality of air distribution plates arranged in a crisscross pattern. The air distribution board is a long strip board with a "herringbone" shape in cross section.
本发明所述排料斗一侧设有与引风机连接的冷却风管。The side of the discharging hopper of the present invention is provided with a cooling air duct connected with the induced draft fan.
本发明所述故障排料管的出料口处设有用于应急的自动灭火装置。The discharge port of the fault discharge pipe of the present invention is provided with an automatic fire extinguishing device for emergency.
本发明所述外壳两侧均设有进风口，两侧的进风口布置在外壳的对角侧。In the present invention, both sides of the casing are provided with air inlets, and the air inlets on both sides are arranged on the diagonal sides of the casing.
本发明的工作原理如下：兰炭由兰炭堆场通过给料机送入本发明顶部的进料口内，兰炭均匀的分布到各个干燥腔内，待物料布满整个干燥腔后由底部出料控料器控制排料速度，排料时兰炭在重力的作用下缓慢向下移动，通过风机将调质好的高温烟气同时送入上进风道和下进风道内，烟气通过分风孔进入各个干燥腔；上进风道与下进风道烟气温度和流量均可进行调节，通过调节烟气的温度和流量使干燥腔内的物料分为快速干燥和慢速干燥两个过程：其中上进风道以上的部分为快速干燥过程，此处的烟气流向是从上进风道进入干燥腔后向上流动，最后烟气通过出风口排出；下进风道与上进风道之间的部分为慢速干燥过程，此处的烟气流向是从下进风道进入干燥腔后向上流动，然后通过中回风道排出后经过配风供热系统处理再次用作干燥烟气进入上下进风道；经过干燥腔完成干燥后的兰炭经出料控料器排放到排料斗内被引风机形成的自然冷风冷却，最后经过生产排料管排出；The working principle of the present invention is as follows: the blue charcoal is fed into the feed port at the top of the present invention from the blue charcoal storage yard through the feeder, the blue charcoal is evenly distributed into each drying cavity, and when the material fills the entire drying cavity, it is discharged from the bottom. The material controller controls the discharge speed. During the discharge, the charcoal slowly moves downward under the action of gravity, and the quenched and tempered high-temperature flue gas is simultaneously sent into the upper air inlet duct and the lower air inlet duct through the fan, and the flue gas passes through the separator. The air holes enter into each drying cavity; the flue gas temperature and flow of the upper air duct and the lower air duct can be adjusted. By adjusting the temperature and flow of the flue gas, the materials in the drying cavity can be divided into two processes: fast drying and slow drying. : The part above the upper air inlet duct is the rapid drying process, the flow direction of the flue gas here is from the upper air inlet duct into the drying chamber and then flows upward, and finally the flue gas is discharged through the air outlet; between the lower air inlet duct and the upper air duct Part of it is a slow drying process, where the flue gas flows from the lower air inlet duct into the drying chamber and flows upwards, and then is discharged through the middle return air duct and then processed by the air distribution heating system to be used as drying flue gas into the upper and lower air inlets. Air duct; the blue charcoal after drying in the drying chamber is discharged into the discharge hopper through the discharge controller, and is cooled by the natural cold air formed by the induced draft fan, and finally discharged through the production discharge pipe;
CO检测装置实时检测干燥腔内的CO浓度，温度检测装置检测干燥腔内的温度，腔内若发生着火可分为以下三种情况：1、轻度着火即腔内局部着火，表现为CO浓度升高，温度不变或升高很小，此时主控系统通入氮气降氧、降温直到CO浓度开始下降到正常数值；2、中度着火即部分兰炭着火，表现为CO浓度高，温度升高但在安全温度范围内，此时主控系统控制停止进料、停止出料、关闭进风阀门和引风阀门、通入氮气降氧、降温直到CO浓度和温度降低到安全范围，将料排入安全处理系统；3、重度着火即腔内物料发生大面积着火时，表现为：检测装置检测到CO浓度升高到预设范围值，温度超过预设值，此时主控系统控制停止进料，关闭进风道的进风阀门和引风阀门，通入氮气降氧、降温，同时使出料控料器快速排料将干燥机内的兰炭快速排出，同时主控系统控制自动灭火装置对排出的兰炭进行灭火，排出的兰炭最后通过输送机送入后续安全处置系统。The CO detection device detects the CO concentration in the drying chamber in real time, and the temperature detection device detects the temperature in the drying chamber. If a fire occurs in the chamber, it can be divided into the following three situations: 1. Mild ignition, that is, local fire in the chamber, manifested as CO concentration When the temperature rises, the temperature does not change or rises very little. At this time, the main control system is fed with nitrogen to reduce oxygen and cool down until the CO concentration begins to drop to the normal value; 2. Moderate ignition means that some of the blue carbon ignites, which is characterized by high CO concentration. The temperature rises but is within the safe temperature range. At this time, the main control system controls to stop feeding, stop discharging, close the air inlet valve and the air inlet valve, introduce nitrogen to reduce oxygen, and cool down until the CO concentration and temperature are reduced to a safe range. Discharge the material into the safety processing system; 3. Severe ignition, that is, when the material in the cavity ignites in a large area, the performance is as follows: the detection device detects that the CO concentration has risen to the preset range value, and the temperature exceeds the preset value. At this time, the main control system Control to stop feeding, close the air inlet valve and induced air valve of the air inlet duct, introduce nitrogen to reduce oxygen and cool down, and at the same time make the discharge material controller quickly discharge material to quickly discharge the blue carbon in the dryer, and at the same time the main control system Control the automatic fire extinguishing device to extinguish the discharged blue charcoal, and the discharged blue charcoal is finally sent to the subsequent safe disposal system through the conveyor.
本发明具有以下有益效果：1、出料控料器将干燥腔与冷却腔分离，冷却强内不会堆积物料，大大降低了冷却腔内物料着火的风险；2通过在中回风道出口设置CO检测装置和温度检测装置，实时监测干燥腔内的CO浓度和干燥过程的温度，系统可以通过CO的浓度和烟气的温度两个参数对干燥过程进行有效的监控，以实现对着火前、中、后的预防与处置；3、通过设置螺旋导料板减轻最底层物料受到的压力，降低了物料破碎率；4、内设布风器，使各个干燥腔的热风均衡，不会出现“偏风”现象，提高了干燥效率及干燥效果；5、设置生产排料管和故障排料管及对应的与主控系统连接的切换阀，通过两台输送机分别输送正常生产的合格物料和故障排出的不合格物料，利于分开进行处理。The invention has the following beneficial effects: 1. The material discharge controller separates the drying cavity from the cooling cavity, so that no material will accumulate in the cooling chamber, which greatly reduces the risk of ignition of the material in the cooling cavity; 2. By setting the outlet of the middle return air duct The CO detection device and temperature detection device can monitor the CO concentration in the drying chamber and the temperature of the drying process in real time. Prevention and disposal during and after; 3. The pressure on the bottom material is reduced by setting the spiral guide plate, and the material crushing rate is reduced; 5. Set up the production discharge pipe and the fault discharge pipe and the corresponding switching valve connected with the main control system, and transport the qualified materials in normal production and The unqualified materials discharged by the fault can be processed separately.
附图说明Description of drawings
图1是本发明主视图；Fig. 1 is the front view of the present invention;
图2是本发明风道结构的俯视图；Fig. 2 is the top view of the air duct structure of the present invention;
图中：1-外壳，2-出风口，3-出气管，4-布风板，5-干燥腔，6-上进风道，7-中回风道，8-下进风道，9-出料控料器，10-排料斗，11-生产排料管，12-故障排料管，13-冷却风管，14-进风口，15-通风道，16-螺旋导料板，17-切换阀。In the picture: 1- shell, 2- air outlet, 3- air outlet, 4- air distribution board, 5- drying chamber, 6- upper air inlet duct, 7- middle return air duct, 8- lower air inlet duct, 9- Discharge controller, 10-discharge hopper, 11-production discharge pipe, 12-fault discharge pipe, 13-cooling air pipe, 14-air inlet, 15-ventilation duct, 16-spiral guide plate, 17- switch valve.
具体实施方式Detailed ways
参见图1-2，本实施例是一种兰炭干燥装置，具有一个外壳1，外壳1顶部设有进料口，外壳1底部设有出料口，外壳1内部设有若干个相互独立的干燥腔5，每个干燥腔5四周均设有通风道15，所述通风道15内从上至下依次设有上进风道6、中回风道7、下进风道8，所述上进风道6、中回风道7、下进风道8与每个干燥腔5接触的一面均设有分风孔，干燥腔5通过所述分风孔与通风道15相通；外壳1内位于干燥腔5上方设有出风口2；每个干燥腔5底部装有一个出料控料器9，外壳1底部位于出料控料器9下方装有一个排料斗10，排料斗10底部装有一个生产排料管11和一个故障排料管12，生产排料管11和故障排料管12上均设有切换阀17。Referring to Figures 1-2, this embodiment is a blue charcoal drying device, which has a shell 1, the top of the shell 1 is provided with a feeding port, the bottom of the shell 1 is provided with a discharge port, and the interior of the shell 1 is provided with several independent Drying cavity 5, each drying cavity 5 is provided with ventilation ducts 15 around, and the ventilation ducts 15 are sequentially provided with an upper air inlet duct 6, a middle return air duct 7, and a lower air inlet duct 8 from top to bottom. The air duct 6, the middle return air duct 7, and the lower air inlet duct 8 are provided with air distribution holes on the side in contact with each drying cavity 5, and the drying cavity 5 communicates with the ventilation duct 15 through the air distribution holes; There is an air outlet 2 above the drying chamber 5; a discharge controller 9 is installed at the bottom of each drying chamber 5, and a discharge hopper 10 is installed at the bottom of the shell 1 under the discharge controller 9, and the bottom of the discharge hopper 10 is equipped with A production discharge pipe 11 and a fault discharge pipe 12 are provided with switching valves 17 on both the production discharge pipe 11 and the fault discharge pipe 12 .
本实施例所述每个干燥腔5内设有螺旋导料板16。In this embodiment, each drying chamber 5 is provided with a spiral guide plate 16 .
本实施例所述中回风道7的出风口处装有用于检测CO浓度的CO检测装置和温度检测装置，CO检测装置和温度检测装置将检测值发送到主控系统。The air outlet of the middle return air duct 7 in this embodiment is equipped with a CO detection device and a temperature detection device for detecting CO concentration, and the CO detection device and the temperature detection device send the detection value to the main control system.
本实施例所述外壳1内位于出风口2与干燥腔5之间装有布风器，布风器包括若干纵横交错布置的布风板4，其中一布风板4上装有与出风口2连通的出气管3，所述布风板4是横截面为“人”字形的长条形板。In the present embodiment, an air distributor is installed in the casing 1 between the air outlet 2 and the drying chamber 5. The air distributor includes a plurality of air distribution plates 4 arranged in a crisscross pattern. For the connected air outlet pipe 3, the air distribution plate 4 is a long strip-shaped plate with a "herringbone" shape in cross section.
本实施例所述排料斗10一侧设有与引风机连接的冷却风管13。In this embodiment, a cooling air duct 13 connected to the induced draft fan is provided on one side of the discharge hopper 10 .
本实施例所述故障排料管12的出料口处设有用于应急的自动灭火装置，自动灭火装置由主控系统控制，发生着火时，主控系统切换故障排料管12的切换阀17开启，故障排料管12排出的不合格物料由灭火装置灭火。In this embodiment, an automatic fire extinguishing device for emergency is provided at the discharge port of the fault discharge pipe 12. The automatic fire extinguishing device is controlled by the main control system. When a fire occurs, the main control system switches the switching valve 17 of the fault discharge pipe 12. Open, the unqualified material discharged from the fault discharge pipe 12 will be extinguished by the fire extinguishing device.
本实施例所述外壳1两侧均设有进风口14，两侧的进风口14布置在外壳1的对角侧。In this embodiment, both sides of the casing 1 are provided with air inlets 14 , and the air inlets 14 on both sides are arranged on the diagonal sides of the casing 1 .
Claims (7)
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