WO2015180264A1 - 一种封闭式节能隧道窑炉 - Google Patents

一种封闭式节能隧道窑炉 Download PDF

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Publication number
WO2015180264A1
WO2015180264A1 PCT/CN2014/084080 CN2014084080W WO2015180264A1 WO 2015180264 A1 WO2015180264 A1 WO 2015180264A1 CN 2014084080 W CN2014084080 W CN 2014084080W WO 2015180264 A1 WO2015180264 A1 WO 2015180264A1
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Prior art keywords
tunnel kiln
kiln
sliding block
saving
sealing
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PCT/CN2014/084080
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English (en)
French (fr)
Inventor
林文智
连文盼
黄桂明
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福建冠福现代家用股份有限公司
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Publication of WO2015180264A1 publication Critical patent/WO2015180264A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Definitions

  • the invention relates to an energy-saving and emission-reducing improvement technology for a ceramic kiln, and particularly relates to a closed energy-saving tunnel kiln.
  • the existing tunnel kiln is installed in the ceramic body through the kiln car, and then the kiln car with the product is pushed into the kiln for firing.
  • the traditional kiln car is a train-type track in the tunnel kiln.
  • the low temperature zone in the tunnel kiln is negative pressure
  • the high temperature zone is positive pressure
  • the kiln car runs. When the low temperature zone is reached, the cold wind under the car will enter the tunnel kiln to affect the product quality.
  • the gas will flow downward, causing the kiln car to be damaged by high temperature.
  • the authorization bulletin number is CN202522059U, which discloses a tunnel kiln sealing structure, wherein the tunnel kiln body and the refractory masonry body arranged on the kiln car frame are in a sliding contact state, which is characterized by An elastic refractory layer is provided in the gap.
  • the tunnel kiln sealing structure is sealed by providing an elastic refractory layer between the tunnel kiln and the kiln car, but the tunnel kiln has a certain expansion coefficient in the high temperature zone of the kiln, so when the kiln firing temperature is changed, the elastic sealing is fireproof. The layer needs to be changed. Otherwise, if the gap between the kiln car and the kiln is too large, the kiln car will be unstable in the tunnel kiln and the blank will fall. If the gap between the kiln car and the kiln is too small, it will lead to The kiln car jam and the kiln block the tunnel. The sealing structure of the tunnel kiln is complicated.
  • the contact between the kiln car and the kiln is tight during operation, which may easily lead to the danger of the kaya kiln and the kiln.
  • the elastic refractory layer made of any material is used. There is always a gap between the tunnel kiln and it cannot be completely sealed.
  • the present invention provides a closed energy-saving tunnel kiln with good sealing performance and stable operation of the kiln car.
  • a closed energy-saving tunnel kiln which comprises: a kiln car, a tunnel kiln body, a sealing layer and an elastic refractory layer, and the left and right sides of the kiln car are respectively formed.
  • a sliding block is formed in the tunnel kiln body with a limiting passage for the sliding block to pass through, and a gap is left between the limiting passage and the sliding block
  • the sealing layer is disposed in the tunnel kiln body and arranged at the limit Below the channel
  • the elastic refractory layer is disposed on the top surface of the sealing layer and closes the gap between the sliding block and the bottom of the limiting channel.
  • a concave-convex fitting sealing structure is formed between the sliding block and the limiting passage.
  • the gap between the sliding block and the limiting channel is 4-8 mm.
  • sealing layer is laid of lightweight refractory bricks.
  • the elastic refractory layer is a refractory fiber.
  • the closed energy-saving tunnel kiln provided by the present invention
  • the kiln car passes through the low temperature zone, the high temperature zone, the quench zone and the cooling zone in the tunnel kiln. Since the proper gap is always left between the sliding block and the limiting channel, the temperature variation and walking stability of different regions in the tunnel kiln can be adapted, and the gap between the sliding block and the bottom of the limiting channel is closed by the sealing layer and the elastic refractory layer. Complete sealing between the kiln car and the tunnel kiln body.
  • FIG. 1 is a schematic structural view of a closed type energy-saving tunnel kiln according to the present invention.
  • Figure 2 is an enlarged view of M in Figure 1.
  • a closed energy-saving tunnel kiln includes a kiln car 1, a tunnel kiln body 2, a sealing layer 3 and an elastic refractory layer 4;
  • the kiln car 1 includes a frame 11, a heat preservation table 12, a sliding block 13, an insulation layer 14, and a pillar 15.
  • the heat preservation table 12 includes a heat insulating brick wall disposed on the frame 11, and two sides of the heat preservation table 12 are respectively constructed.
  • the sliding block 13 arranged in parallel, the heat insulating layer 14 is a heat insulating cotton laid on the heat insulating table 12, and the pillar 14 is a multi-layer structure disposed on the heat insulating layer 12;
  • a limiting passage 21 through which the sliding block 13 passes is formed in the tunnel kiln body 2, and a gap of 4-8 mm is left between the limiting passage 21 and the sliding block 13 for the sliding block to pass, and the limiting passage and the sliding block and the sliding block Forming a concave-convex fitting sealing structure;
  • the sealing layer 3 is disposed in the tunnel kiln 2 and disposed under the limiting passage 21, and the sealing layer 3 is a lightweight refractory brick built on the inner wall of the tunnel kiln 2;
  • the elastic refractory layer 4 is disposed on the top surface of the sealing layer 3 and closes the gap between the sliding block 13 and the bottom of the limiting passage 21, and the elastic refractory layer 4 is made of refractory fiber.
  • the kiln car 1 sequentially passes through the low temperature zone, the high temperature zone, the quench zone and the cooling zone in the tunnel kiln 2, and the sliding block 13 and the limiting channel are adopted.
  • the sealing layer 3 and the elastic refractory layer 4 close the gap between the sliding block 13 and the bottom of the limiting channel 21 to realize the kiln car. 1 Completely sealed from the tunnel kiln body 2.
  • the invention closes the gap between the sliding block and the bottom of the limiting passage through the sealing layer and the elastic refractory layer, thereby achieving complete sealing between the kiln car and the tunnel kiln body.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Material Composition (AREA)
  • Tunnel Furnaces (AREA)

Abstract

本发明涉及陶瓷窑炉的节能改进，具体的涉及封闭式节能隧道窑炉。该封闭式节能隧道窑，包括窑车、隧道窑窑体、密封层和弹性耐火层，所述窑车左、右两侧各形成有一滑动块，所述隧道窑窑体内形成有供滑动块通过的限位通道、且该限位通道与滑动块之间留有间隙，所述密封层设置于隧道窑窑体内且布置于限位通道下方，所述弹性耐火层设置于密封层顶面上并将滑动块与限位通道底部的缝隙封闭。上述封闭式节能隧道窑炉，能适应隧道窑内不同区域温度的变化、行走稳定，通过密封层和弹性耐火层将滑动块与限位通道底部的缝隙封闭，实现窑车与隧道窑体间的完全密封。

Description

一种封闭式节能隧道窑炉 技术领域
本发明涉及陶瓷窑炉的节能减排改进技术，具体的涉及封闭式节能隧道窑炉。
背景技术
在陶瓷生产中大量使用隧道窑进行烧制，现有的隧道窑通过窑车装在陶瓷坯体，再将装有产品的窑车推进窑炉内进行烧成。传统的窑车在隧道窑中为火车式轨道，为了保证窑车的前进则窑车与隧道窑间始终需留有间隙，隧道窑中低温区为负压、高温区为正压，窑车运行到低温区时车下的冷风会进入隧道窑内影响产品质量，窑车运行到高温区时气体向下流动，导致窑车遇高温损坏。
为解决上述问题，授权公告号为CN202522059U公开了一种隧道窑密封结构，所述隧道窑窑体与设于窑车车架上的耐火砌体之间呈间隙滑动接触状态，其特点在于所述间隙内设有弹性耐火层。
该种隧道窑密封结构通过在隧道窑与窑车之间设置了弹性耐火层进行密封，但是隧道窑在窑炉高温区有一定的膨胀系数，因此在改变窑炉烧成温度时，弹性密封耐火层需要变换，否则如果窑车与窑炉间的缝隙过大，就会造成窑车在隧道窑内运行不稳定、坯体掉落，如果窑车与窑炉间的缝隙太小，就会导致窑车卡壳、窑炉堵死该种隧道窑密封结构复杂、运行时候窑车与窑炉之间接触紧密，容易导致卡窑、倒窑的危险；另外无论采用哪种材料制成的弹性耐火层，始终与隧道窑之间存在间隙，不能完全密封。
发明内容
为克服现有技术中的不足，本发明提供一种密封性能好、窑车运行稳定的封闭式节能隧道窑炉。
为实现上述目的，本发明采用的技术方案如下：封闭式节能隧道窑，其特征在于：包括窑车、隧道窑窑体、密封层和弹性耐火层，所述窑车左、右两侧各形成有一滑动块，所述隧道窑窑体内形成有供滑动块通过的限位通道、且该限位通道与滑动块之间留有间隙，所述密封层设置于隧道窑窑体内且布置于限位通道下方，所述弹性耐火层设置于密封层顶面上并将滑动块与限位通道底部的缝隙封闭。
进一步的，滑动块与限位通道间形成凹凸嵌合密封结构。
进一步的，滑动块与限位通道之间的间隙为4-8mm。
进一步的，密封层为轻质耐火砖铺设而成。
进一步的，弹性耐火层为耐火纤维。
由上述对本发明的描述可知，与现有技术相比，本发明提供的封闭式节能隧道窑炉，在使用时，窑车在隧道窑内依次通过低温区、高温区、急冷区和冷却区，由于滑动块与限位通道之间始终留有合适的间隙，能适应隧道窑内不同区域温度的变化、行走稳定，通过密封层和弹性耐火层将滑动块与限位通道底部的缝隙封闭，实现窑车与隧道窑体间的完全密封。
附图说明
图1 为本发明封闭式节能隧道窑炉的结构示意图。
图2 为图1中M的放大图。
具体实施方式
以下通过具体实施方式对本发明作进一步的描述。
参照图1至图2所示，封闭式节能隧道窑，包括窑车1、隧道窑窑体2、密封层3和弹性耐火层4；
窑车1包括车架11、保温台12、滑动块13、保温层14、支柱15，所述保温台12包括设置于车架11上的保温砖墙，保温台12左右两侧各砌出两条平行布置的滑动块13，保温层14为铺设置于保温台12上的保温棉，支柱14为设置于保温层12上的多层结构；
隧道窑窑体2内形成有供滑动块13通过的限位通道21，该限位通道21与滑动块13之间留有4-8mm间隙供滑动块通过，该限位通道与滑动块与间形成凹凸嵌合密封结构；
密封层3设置于隧道窑2窑体内且布置于限位通道21下方，该密封层3为砌于隧道窑2内壁上的轻质耐火砖；
弹性耐火层4设置于密封层3顶面上并将滑动块13与限位通道21底部的缝隙封闭，该弹性耐火层4采用耐火纤维制成。
参照图1、图2所示，上述封闭式节能隧道窑炉在使用时，窑车1在隧道窑2内依次通过低温区、高温区、急冷区和冷却区，由滑动块13与限位通道21之间始终留有合适的间隙，能适应隧道窑内不同区域温度的变化、行走稳定，通过密封层3和弹性耐火层4将滑动块13与限位通道21底部的缝隙封闭，实现窑车1与隧道窑体2间的完全密封。
上述仅为本发明的若干具体实施方式，但本发明的设计构思并不局限于此，凡利用此构思对本发明进行非实质性的改动，均应属于侵犯本发明保护范围的行为。
工业实用性
本发明通过密封层和弹性耐火层将滑动块与限位通道底部的缝隙封闭，实现窑车与隧道窑体间的完全密封。

Claims (5)

  1. 一种封闭式节能隧道窑，其特征在于：包括窑车、隧道窑窑体、密封层和弹性耐火层，所述窑车左、右两侧各形成有一滑动块，所述隧道窑窑体内形成有供滑动块通过的限位通道、且该限位通道与滑动块之间留有间隙，所述密封层设置于隧道窑窑体内且布置于限位通道下方，所述弹性耐火层设置于密封层顶面上并将滑动块与限位通道底部的缝隙封闭。
  2. 根据权利要求1所述的封闭式节能隧道窑炉，其特征在于：所述滑动块与限位通道间形成凹凸嵌合密封结构。
  3. 根据权利要求1或2所述的封闭式节能隧道窑炉，其特征在于：所述所述滑动块与限位通道之间的间隙为4-8mm。
  4. 根据权利要求1所述的封闭式节能隧道窑炉，其特征在于：所述密封层为轻质耐火砖铺设而成。
  5. 根据权利要求1所述的封闭式节能隧道窑炉，其特征在于：所述弹性耐火层为耐火纤维。
PCT/CN2014/084080 2014-05-30 2014-08-11 一种封闭式节能隧道窑炉 WO2015180264A1 (zh)

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CN117053550B (zh) * 2023-10-11 2023-12-15 福建省德化意达陶瓷有限公司 高效节能的陶瓷窑炉

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