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WO2018028286A1 - 一种烧结炉 - Google Patents

一种烧结炉 Download PDF

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Publication number
WO2018028286A1
WO2018028286A1 PCT/CN2017/087301 CN2017087301W WO2018028286A1 WO 2018028286 A1 WO2018028286 A1 WO 2018028286A1 CN 2017087301 W CN2017087301 W CN 2017087301W WO 2018028286 A1 WO2018028286 A1 WO 2018028286A1
Authority
WO
WIPO (PCT)
Prior art keywords
furnace
sintering
sintering furnace
lifting platform
end portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/087301
Other languages
English (en)
French (fr)
Inventor
何玲玲
夏婉婷
郭颖
白莹莹
韩成玮
袁大鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIAONING UPCERA CO Ltd
Original Assignee
LIAONING UPCERA CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LIAONING UPCERA CO Ltd filed Critical LIAONING UPCERA CO Ltd
Priority to US16/324,547 priority Critical patent/US10995992B2/en
Priority to KR1020197005034A priority patent/KR102123193B1/ko
Priority to EP17838418.6A priority patent/EP3499163A4/en
Publication of WO2018028286A1 publication Critical patent/WO2018028286A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/0016—Chamber type furnaces
    • 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
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • 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
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/0016—Chamber type furnaces
    • F27B17/0033—Chamber type furnaces the floor of the furnaces consisting of the support carrying the charge, e.g. car type furnaces
    • 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
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/02—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 specially designed for laboratory use
    • 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
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/02—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 specially designed for laboratory use
    • F27B17/025—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 specially designed for laboratory use for dental workpieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0085—Movement of the container or support of the charge in the furnace or in the charging facilities
    • F27D2003/0086—Up or down
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals
    • F27D2099/0078—Means to minimize the leakage of the furnace atmosphere during charging or discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2003/00—Type of treatment of the charge
    • F27M2003/04—Sintering

Definitions

  • the present application relates to the field of sintering equipment, and in particular to a sintering furnace.
  • Zirconium oxide ceramics have high strength and a certain light transmittance, and have been widely used for zirconia restorations used in dental restoration treatment. When making a zirconia restoration, it is necessary to sinter the zirconia restoration.
  • the existing ceramic sintering equipment generally comprises a furnace body and a lifting device, wherein the furnace body comprises a furnace, a heating body and a furnace mouth, and the heating body is located in the furnace for heating the furnace, and the furnace is connected with the furnace mouth.
  • the lifting device is detached from the furnace body, facilitating loading and unloading of the sintered sample.
  • the lifting device is raised to the sintering position, and the sintered sample is sent into the furnace through the furnace port for sintering.
  • the furnace In order to speed up the sintering speed and reduce the sintering time, the furnace is generally heated to a preset temperature, and the lifting device is quickly lowered to the loading position, and the zirconia restoration to be sintered is placed on the lifting device, and then the lifting device is raised. Sintering is carried out in the furnace, and after the sintering is completed, the lifting device is lowered to the discharge position, and the sintered sample is cooled.
  • the lifting device When the lifting device is lowered to the discharge position, the lifting device is completely separated from the furnace mouth, the furnace is opened, the temperature is drastically lowered, and the furnace refractory material and the heating element are greatly damaged, and the service life is reduced. At the same time, because the furnace temperature drops sharply, it takes a long time for the furnace to heat up again to the temperature required for sintering the zirconia restoration, so that the entire sintering process generally takes 6-10 hours, and the rapid sintering of the entire sintering process less than 20 minutes cannot be achieved. .
  • the purpose of the embodiment of the present application is to provide a sintering furnace for solving the problems of short service life and long sintering time of the existing ceramic sintering equipment.
  • the technical solutions are as follows:
  • a sintering furnace comprising a furnace body and a lifting device, the furnace body comprising a furnace and a furnace mouth, the furnace The crucible is connected to the furnace mouth; the sintering furnace further comprises a blocking member, the blocking member is disposed on the lifting device; the sintering furnace is in a loading or unloading condition, and the sealing member is blocked The furnace mouth.
  • the blocking member includes a plug and at least two support rods, and a lower end portion of each of the support rods is fixedly connected to the lifting device, and an upper end portion is fixed to the plug Connected, the blocking member blocks the furnace mouth through the plug.
  • the support rod is specifically a ceramic support rod.
  • the plug is specifically an alumina ceramic fiber plug or a polycrystalline mullite fiber plug.
  • the blocking member and the lifting device are integrally formed and provided with a sample space for placing a sintered sample.
  • the sample space is specifically a through hole extending in a horizontal direction.
  • the blocking member is specifically an alumina ceramic fiber blocking member or a polycrystalline mullite fiber sealing member.
  • the lifting device comprises an lifting platform and a driving component, and the driving component is configured to drive the lifting platform to rise or fall,
  • the lifting platform is specifically a stepped lifting platform that is large and small, and the blocking member is disposed at an upper end portion of the lifting platform; the sintering furnace is located in a sintering condition, and the upper end portion of the lifting platform is inserted into the
  • the furnace mouth has a stepped surface at a lower end portion that abuts against an outer surface of the furnace body.
  • the lifting platform is specifically a heat preservation lifting platform.
  • the lifting device further includes a cooling fan, and the cooling fan is evenly distributed on an outer peripheral wall of the lower end portion of the lifting platform.
  • the embodiment of the present application provides a sintering furnace, comprising a furnace body and a lifting device.
  • the furnace body includes a furnace and a furnace mouth, and the furnace is connected with the furnace mouth.
  • the sintering furnace further includes a sealing member, and the sealing member is disposed on the lifting device.
  • the device is located at the loading or unloading position, and the sealing member blocks the furnace mouth. It can be seen that when the sintering furnace is in the unloading condition, the sealing member can block the furnace mouth, the furnace is not in direct contact with the outside, the temperature in the furnace does not drop sharply, and the service life of the sintering furnace is increased. At the same time, it is also possible to rapidly raise the temperature to the temperature required for sintering the zirconia restoration, which greatly shortens the sintering time.
  • FIG. 1 is a schematic structural view of a specific embodiment of a sintering furnace provided by the present application.
  • Figure 2 is a schematic view showing the structure of the sintering furnace shown in Figure 1 in a sintering condition
  • FIG. 3 is another schematic structural view of a sintering furnace provided by the present application.
  • loading or unloading conditions refers to the working condition of the sintering furnace when the lifting device of the sintering furnace is lowered to the loading or unloading position; "refers to the working condition of the sintering furnace when the lifting device of the sintering furnace is raised to the sintering position.
  • FIG. 1 is a schematic structural view of a specific embodiment of a sintering furnace provided in the present application
  • FIG. 2 is a structural schematic view of the sintering furnace shown in FIG. 1 in a sintering condition.
  • the sintering furnace includes a furnace 10 and a furnace opening 20, and the furnace 10 is connected to the furnace opening 20.
  • the sintering furnace further includes a sealing member 30, and the sealing member 30 is disposed on the lifting device.
  • the sintering furnace is located in the loading or unloading condition, and the sealing member 30 blocks the furnace opening 20.
  • the sealing member can block the furnace mouth, the furnace is not in direct contact with the outside, the temperature in the furnace does not drop sharply, and the service life of the sintering furnace is increased. At the same time, it is also possible to rapidly raise the temperature to the temperature required for sintering the zirconia restoration, which greatly shortens the sintering time.
  • the blocking member 30 includes a plug 301 and at least two support rods 302.
  • the lower end of each support rod 302 is fixedly connected with the lifting device, and the upper end portion is fixedly connected with the plug 301.
  • the sintering furnace is charged or unloaded.
  • the blocking member 30 can block the furnace opening 20 through the plug 301.
  • the support rod 302 can be a ceramic support rod, and of course, other high temperature resistant support rods, which are not specifically limited herein.
  • the plug 301 may be a plug made of a high temperature resistant material such as an alumina ceramic fiber plug or a polycrystalline mullite fiber plug, which is not specifically limited herein.
  • the plug 301 is fixed to the upper end of the lifting device by the support rod 302, and the plug 301 forms a certain space with the upper end surface of the lifting device, which can facilitate the loading and removal of the sample. It can be understood that the size of the plug 301 is the same as the size of the mouth of the furnace mouth 20. After the sintering is finished, the lifting device is lowered to the discharging position, and the plug 301 can block the furnace mouth 20 to reduce the heat exchange between the furnace and the outside. .
  • the sintering furnace further includes a furnace body 40 and a heating element 50, wherein the furnace body 40 can be composed of a jacket 401 and a heat insulating layer 402, which can reduce heat exchange between the furnace 10 and the outside during sintering of the sample, and ensure the inside of the furnace 10. temperature.
  • the outer casing 401 and the thermal insulation layer 402 may be made of a jacket and an insulating layer made of a high-temperature resistant lightweight refractory material.
  • the outer casing 401 may be an outer casing made of an alumina ceramic fiber refractory material, and the thermal insulation layer 402 may be used in multiple layers.
  • the insulating layer made of the mullite fiber refractory material is not specifically limited herein.
  • the lifting device may include a lifting table 60 and a driving member (not shown) for driving the lifting table 60 to rise or fall.
  • the driving member may be a conventional driving device, for example, a mechanical arm driving device, a hydraulic driving device, or the like, and the lifting platform 60 may be driven to rise or fall, which is not specifically limited herein.
  • the lifting platform 60 may specifically be a stepped lifting platform that is large and small, and the blocking member 30 is disposed at an upper end portion of the lifting platform 60.
  • the upper stepped portion 601 of the lifting platform 60 is smaller than the lower end portion 602.
  • the size of the upper end portion 601 of the lifting platform 60 and the mouth 20 are The caliber is the same size, and the lower end portion 602 is larger than the caliber of the furnace mouth 20.
  • the upper end portion 601 of the lifting table 60 When the sintering furnace is in a sintering condition, the upper end portion 601 of the lifting table 60 is inserted into the furnace opening 20, and the stepped surface of the lower end portion 602 is opposed to the outer surface of the furnace body 40.
  • the upper end portion 601 of the lifting table 60 is inserted into the furnace opening 20 to feed the sample into the furnace 10 for sintering.
  • the upper end portion 601 of the lifting table 60 blocks the furnace opening 20, which can reduce the furnace during the sintering process.
  • the heat exchange with the outside, the step surface of the lower end portion 602 abuts against the outer surface of the furnace body 40, which can further close the furnace, reduce heat loss, and accelerate the sintering speed.
  • the lifting platform 60 is a lifting platform made of a high temperature resistant insulating material.
  • it may be an alumina ceramic fiber refractory material or a polycrystalline mullite fiber refractory material, This is not specifically limited.
  • the upper end portion 601 of the lifting platform 60 may include two portions, an upper portion 6011 and a lower portion 6012.
  • the lower end portion of the support rod 302 may be fixedly coupled to the upper portion 6011 of the upper end portion 601 of the lift table 60.
  • the lower end portion 602 of the lifting platform 60 may also include two portions of an upper portion 6021 and a lower portion 6022.
  • the sintering furnace is in a sintering condition, and the stepped surface of the upper portion 6021 of the lower end portion 602 abuts against the outer surface of the furnace body 40.
  • the lifting device may further include a cooling fan 70.
  • the cooling fan 70 may be evenly distributed on the outer peripheral wall of the lower end portion 602 of the lifting platform 60 for cooling the lifting platform 60 when the sintering furnace is in the unloading condition. Further, the sintered sample is cooled. When the temperature of the sample drops to a certain temperature, the sample can be directly placed on the cooling fan 70 to rapidly cool the sample. Specifically, the cooling fan 70 can be evenly distributed on the outer peripheral wall of the lower portion 6022 of the lower end portion 602 of the lifting platform 60. This prevents the cooling fan 70 from directly contacting the furnace body 40 when the sample is sintered, and prevents the cooling fan 70 from being damaged at a high temperature. .
  • cooling fan 70 can adopt any existing cooling fan, and can achieve the purpose of cooling, and is not specifically limited herein.
  • the present application is not specifically limited herein, and those skilled in the art can determine according to factors such as the type of the sample and the temperature drop requirement.
  • the closure member 30 and the lifting device are integrally formed and provided with a sample space 303 for placing a sintered sample.
  • the sample space 303 is a through hole extending in the horizontal direction, and the sintered sample can be placed and taken out, and the shape and size thereof are not specifically limited herein.
  • the blocking member 30 may be an alumina ceramic fiber sealing member or a polycrystalline mullite fiber sealing member, or may be a sealing member made of other high temperature resistant materials, which is not specifically limited herein.
  • the size of the blocking member 30 is the same as the size of the mouth of the furnace mouth 20. After the sintering is finished, the lifting device is lowered to the discharging position, and the sealing member 30 can block the furnace mouth 20 to reduce the furnace and the furnace. External heat exchange.
  • the structure of the furnace body and the lifting device of the sintering furnace and FIG. 1 The structure of the furnace body and the lifting device of the sintering furnace shown in FIG. 2 is the same, and those skilled in the art can undoubtedly describe the structure of the furnace body and the lifting device of the sintering furnace shown in FIG. 1 and FIG. 2 herein.
  • the working principle of the sintering furnace in this embodiment, as well as the structure of the furnace body and the lifting device, are not specifically described herein.
  • the blocking member 30 may be integrally formed with the upper portion of the upper end portion of the lifting platform for ease of installation and processing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Details (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

一种烧结炉，包括炉体和升降装置，炉体包括炉膛（10）和炉口（20），炉膛（10）和炉口（20）连通，烧结炉还包括封堵件（30），封堵件（30）设置于升降装置，烧结炉处于装料或卸料工况，封堵件（30）封堵所述炉口（20）。当烧结炉位于卸料工况时，封堵件（30）可以将炉口（20）封堵，炉膛（10）不与外界直接接触，炉膛（10）内温度不会急剧下降，增加了烧结炉的使用寿命。

Description

一种烧结炉
本申请要求于2016年8月10日提交中国专利局、申请号为201620858554.X、发明名称为“一种烧结炉”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及烧结设备领域，特别涉及一种烧结炉。
背景技术
氧化锆陶瓷具有高强度和一定的透光性，已经广泛用于牙科修复治疗时所使用的氧化锆修复体。制作氧化锆修复体时，需要对氧化锆修复体进行烧结。
现有陶瓷烧结设备一般包括炉体和升降装置，其中，炉体包括炉膛、发热体和炉口，发热体位于炉膛内，用于对炉膛进行加热，炉膛与炉口连通。在装料和卸料时，升降装置与炉体脱离，便于装载和取出烧结样品。烧结时，升降装置上升至烧结位置，将烧结样品通过炉口送入炉膛内进行烧结。
为了加快烧结速度，减少烧结时间，一般采用将炉膛预先加热到预设温度后，把升降装置快速下降到装料位置，放置待烧结的氧化锆修复体在升降装置上后，再把升降装置上升至炉膛内进行烧结，烧结结束后，将升降装置下降至卸料位置，对烧结后的样品进行降温处理。
当升降装置下降到卸料位置时，升降装置完全脱离炉口，炉膛敞开，温度急剧下降，对炉膛耐火材料和发热体产生极大损害，降低使用寿命。同时，由于炉膛温度急剧下降，炉膛再次升温至烧结氧化锆修复体所需温度需要的时间较长，使整个烧结过程一般需要6-10小时，无法实现整个烧结过程少于二十分钟的快速烧结。
实用新型内容
本申请实施例的目的在于提供一种烧结炉，用于解决现有陶瓷烧结设备使用寿命短及烧结时间长的问题。技术方案如下：
一种烧结炉，包括炉体和升降装置，所述炉体包括炉膛和炉口，所述炉 膛和所述炉口连通；所述烧结炉还包括封堵件，所述封堵件设置于所述升降装置；所述烧结炉处于装料或卸料工况，所述封堵件封堵所述炉口。
在本申请的一种优选实施方式中，所述封堵件包括堵头和至少两个支撑杆，各所述支撑杆的下端部与所述升降装置固定连接，上端部与所述堵头固定连接，所述封堵件通过所述堵头封堵所述炉口。
可选的，所述支撑杆具体为陶瓷支撑杆。
可选的，所述堵头具体为氧化铝陶瓷纤维堵头或多晶莫来石纤维堵头。
在本申请的一种优选实施方式中，所述封堵件和所述升降装置一体成型并设有样品空间，所述样品空间用于放置烧结样品。
可选的，所述样品空间具体为沿水平方向延伸的贯穿孔。
可选的，所述封堵件具体为氧化铝陶瓷纤维封堵件或多晶莫来石纤维封堵件。
可选的，所述升降装置包括升降台和驱动件，所述驱动件用于驱动所述升降台上升或下降，
所述升降台具体为上小下大的阶梯形升降台，所述封堵件设置于所述升降台的上端部；所述烧结炉位于烧结工况，所述升降台的上端部插入所述炉口，下端部的台阶面与所述炉体的外表面相抵。
可选的，所述升降台具体为保温升降台。
可选的，所述升降装置还包括降温风扇，所述降温风扇均布于所述升降台的下端部的外周壁。
本申请实施例提供了一种烧结炉，包括炉体和升降装置，炉体包括炉膛和炉口，炉膛和炉口连通，该烧结炉还包括封堵件，封堵件设置于升降装置，升降装置位于装料或卸料位置，封堵件封堵炉口。可见，本方案中烧结炉位于卸料工况时，封堵件可以将炉口封堵，炉膛不与外界直接接触，炉膛内温度不会急剧下降，增加了烧结炉的使用寿命。同时，还可以快速升温至烧结氧化锆修复体所需温度，大大缩短了烧结时间。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请所提供烧结炉的一种具体实施例的结构示意图；
图2为图1中所示烧结炉处于烧结工况时的结构示意图；
图3为本申请所提供烧结炉的另一种结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，本文中所说的“装料或卸料工况”指的是烧结炉的升降装置下降到装料或卸料位置时，烧结炉的工作状况；所说的“烧结工况”指的是烧结炉的升降装置上升到烧结位置时，烧结炉的工作状况。
参照图1和图2所示，其中，图1为本申请所提供烧结炉的一种具体实施例的结构示意图，图2为图1中所示烧结炉处于烧结工况时的结构示意图。
本具体实施例中，如图1所示，烧结炉包括炉膛10和炉口20，炉膛10和炉口20连通，该烧结炉还包括封堵件30，封堵件30设置于升降装置，该烧结炉位于装料或卸料工况，封堵件30封堵炉口20。
可见，这种烧结炉位于卸料工况时，封堵件可以将炉口封堵，炉膛不与外界直接接触，炉膛内温度不会急剧下降，增加了烧结炉的使用寿命。同时，还可以快速升温至烧结氧化锆修复体所需温度，大大缩短了烧结时间。
具体地，封堵件30包括堵头301和至少两个支撑杆302，各支撑杆302的下端部与升降装置固定连接，上端部与堵头301固定连接，该烧结炉处于装料或卸料工况时，封堵件30可以通过堵头301封堵炉口20。其中，支撑杆 302可以为陶瓷支撑杆，当然也可以为其他耐高温的支撑杆，在此不做具体限定。堵头301可以为氧化铝陶瓷纤维堵头或多晶莫来石纤维堵头等耐高温材料制成的堵头，在此不做具体限定。
实际应用中，堵头301通过支撑杆302被固定在升降装置上端，堵头301与升降装置上端面形成一定空间，可以方便样品的装载和取出。可以理解的是，堵头301的大小与炉口20口径大小一致，在烧结结束后，升降装置下降至卸料位置，堵头301便可以将炉口20封堵，减少炉膛与外界的热交换。
当然，该烧结炉还包括炉体40和发热体50，其中，炉体40可以由外套401和保温层402组成，这样可以减少在烧结样品时炉膛10与外界的热交换，保证炉膛10内的温度。具体的，外套401和保温层402可以采用由耐高温的轻质耐火材料制成的外套和保温层，例如，外套401可以采用氧化铝陶瓷纤维耐火材料制成的外套，保温层402可以采用多晶莫来石纤维耐火材料制成的保温层，在此不做具体限定。
如图2所示，在本具体实施例中，升降装置可以包括升降台60和驱动件(图中未示出)，该驱动件用于驱动升降台60上升或下降。该驱动件可以采用现有驱动装置，例如机械臂驱动装置、液压驱动装置等，可以驱动升降台60上升或下降即可，在此不做具体限定。升降台60具体可以为上小下大的阶梯形升降台，封堵件30设置于升降台60的上端部。本实施例中所说的“上小下大的阶梯形升降台”即为升降台60的上端部601比下端部602小，具体的，升降台60的上端部601的大小与炉口20的口径大小一致，下端部602则大于炉口20的口径。
该烧结炉处于烧结工况时，升降台60的上端部601插入炉口20，下端部602的台阶面与炉体40的外表面相抵。一方面，升降台60的上端部601插入炉口20可以将样品送入炉膛10内进行烧结，另一方面，升降台60的上端部601将炉口20封堵，可以在烧结过程中减少炉膛与外界的热交换，下端部602的台阶面与炉体40的外表面相抵，可以进一步封闭炉膛，降低热量的损失，加快烧结速度。
需要说明的是，升降台60为由耐高温的保温材料制成的升降台。例如可以是氧化铝陶瓷纤维耐火材料或多晶莫来石纤维耐火材料制成的升降台，在 此不做具体限定。
为方便安装和拆卸，升降台60的上端部601可以包括上部6011和下部6012两部分。支撑杆302的下端部可以与升降台60的上端部601的上部6011固定连接。
进一步的，升降台60的下端部602也可以包括上部6021和下部6022两部分。该烧结炉位于烧结工况，下端部602的上部6021的台阶面与炉体40的外表面相抵。
进一步的，升降装置还可以包括降温风扇70，降温风扇70可以均布于升降台60的下端部602的外周壁上，用于在该烧结炉处于卸料工况时，给升降台60降温，进而给烧结后的样品降温，当样品的温度下降到一定温度后，可以将样品直接放置于降温风扇70处，给样品进行快速降温。具体的，降温风扇70可以均布于升降台60的下端部602的下部6022的外周壁上，这样可以避免烧结样品时降温风扇70直接与炉体40接触，防止降温风扇70在高温下被损坏。
需要说明的是，降温风扇70可以采用现有的任意降温风扇，可以达到降温目的即可，在此不进行具体限定。对于降温风扇70的数量，本申请在此也不做具体限定，本领域技术人员可以根据样品种类及降温需要等因素进行确定。
在本申请的另一具体实施例中，如图3所示，封堵件30和升降装置一体成型并设有样品空间303，样品空间303用于放置烧结样品。具体的，样品空间303为沿水平方向延伸的贯穿孔，可以将烧结样品放入和取出即可，对其形状及大小在此不做具体限定。该封堵件30可以为氧化铝陶瓷纤维封堵件或多晶莫来石纤维封堵件，也可以为其他耐高温材料制成的封堵件，在此不做具体限定。
可以理解的是，该封堵件30的大小与炉口20口径大小一致，在烧结结束后，升降装置下降至卸料位置，该封堵件30便可以将炉口20封堵，减少炉膛与外界的热交换。
需要说明的是，在该实施例中，烧结炉的炉体及升降装置的结构与图1 和图2所示的烧结炉的炉体及升降装置的结构相同，本领域技术人员可以根据本文中对图1和图2中所示烧结炉的炉体及升降装置的结构的描述，毫无疑义地推知该实施例中烧结炉的工作原理，以及炉体及升降装置的结构，在此不再赘述。
进一步的，在该实施例中，为方便安装和加工，该封堵件30可以与升降台上端部的上部一体成型。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本说明书中的各个实施例均采用相关的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。
以上所述仅为本申请的较佳实施例而已，并非用于限定本申请的保护范围。凡在本申请的精神和原则之内所作的任何修改、等同替换、改进等，均包含在本申请的保护范围内。

Claims (10)

  1. 一种烧结炉，包括炉体和升降装置，所述炉体包括炉膛和炉口，所述炉膛和所述炉口连通；其特征在于，所述烧结炉还包括封堵件，所述封堵件设置于所述升降装置；所述烧结炉处于装料或卸料工况，所述封堵件封堵所述炉口。
  2. 如权利要求1所述的烧结炉，其特征在于，所述封堵件包括堵头和至少两个支撑杆，各所述支撑杆的下端部与所述升降装置固定连接，上端部与所述堵头固定连接，所述封堵件通过所述堵头封堵所述炉口。
  3. 如权利要求2所述的烧结炉，其特征在于，所述支撑杆具体为陶瓷支撑杆。
  4. 如权利要求2所述的烧结炉，其特征在于，所述堵头具体为氧化铝陶瓷纤维堵头或多晶莫来石纤维堵头。
  5. 如权利要求1所述的烧结炉，其特征在于，所述封堵件和所述升降装置一体成型并设有样品空间，所述样品空间用于放置烧结样品。
  6. 如权利要求5所述的烧结炉，其特征在于，所述样品空间具体为沿水平方向延伸的贯穿孔。
  7. 如权利要求5所述的烧结炉，其特征在于，所述封堵件具体为氧化铝陶瓷纤维封堵件或多晶莫来石纤维封堵件。
  8. 如权利要求1-7任一项所述的烧结炉，其特征在于，所述升降装置包括升降台和驱动件，所述驱动件用于驱动所述升降台上升或下降，
    所述升降台具体为上小下大的阶梯形升降台，所述封堵件设置于所述升降台的上端部；所述烧结炉位于烧结工况，所述升降台的上端部插入所述炉口，下端部的台阶面与所述炉体的外表面相抵。
  9. 如权利要求8所述的烧结炉，其特征在于，所述升降台具体为保温升降台。
  10. 如权利要求8所述的烧结炉，其特征在于，所述升降装置还包括降温风扇，所述降温风扇均布于所述升降台的下端部的外周壁。
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