CN210374620U

CN210374620U - High-temperature-resistant long-service-life small furnace cover

Info

Publication number: CN210374620U
Application number: CN201920071094.XU
Authority: CN
Inventors: 张红哲; 闫建敏; 陈俊峰; 任洪庆; 周新套; 黄国民; 孙庚辰
Original assignee: Henan Ruitake Industrial Co ltd
Current assignee: Henan Ruitaike Industrial Group Co ltd
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-04-21
Anticipated expiration: 2029-01-16

Abstract

The utility model belongs to the technical field of metallurgical machinery, it relates to a bury high temperature resistant long life little bell of electric stove underground specifically to say so. The furnace cover in the prior art generally adopts a traditional structure, when the pressure below the furnace cover is too high, gas can be discharged through the exhaust pipe, so that the environment is polluted, the atmosphere in the furnace cannot be stably regulated, and the requirement on long service life cannot be met. To the defect that bell exists among the prior art, the utility model provides a pair of little bell of high temperature resistant long life includes lid, intake pipe and blast pipe, and the foundation ring external diameter of lid is the same with the fire door internal diameter of furnace body, and intake pipe and blast pipe all are located inside the lid, pass from the internal portion of lid, and the two forms gas passage through the trachea switch-on, and the top cap of lid is flat top cap, has rings above the top cap, is equipped with the tamping layer in the top cap, is equipped with stainless steel spring in the tamping layer. The utility model discloses rational in infrastructure, it is energy-conserving high-efficient, can effectively solve under the current bell structure, the problem that bell life is short, economy and social are showing.

Description

High-temperature-resistant long-service-life small furnace cover

Technical Field

The utility model belongs to the technical field of metallurgical machinery, it relates to a bury high temperature resistant long life little bell of electric stove underground specifically to say so.

Background

The furnace cover is acted by high temperature and often by rapid cooling and rapid heating, and has higher requirements on refractory materials. The refractory material used for the furnace cover of the electric furnace in China is prepared from a large block of specially-shaped silicon combined brick which is originally adopted to an unburned high-alumina brick which is prepared by adding various bonding agents (water glass, phosphoric acid, aluminum dihydrogen phosphate and the like), or sillimanite mineral raw materials are introduced into ingredients, and micro powder, spinel, silicon carbide and the like are added. The refractory used for the furnace lid of the electric furnace is as follows. (1) The local wrong brick furnace cover is rich in high-alumina bauxite resources and complete in variety in China, and provides favorable conditions for developing high-grade high-alumina refractory materials. The sintered high-alumina brick with corundum as main crystal phase may be used in the cover of superhigh power electric furnace and has service life of about 150. The key to delay the damage of the firebrick is to prevent the spalling and improve the erosion resistant piece. (2) The furnace cover brick containing "three stones" includes sillimanite, kyanite and andalusite, belongs to sillimanite group minerals, and is an allotrope. The theoretical composition is A120353.1% and Si0236.9%. The three mineral raw materials are high-aluminum minerals and have the performance of the high-aluminum minerals. The "trisilicite" is heated to a certain temperature and irreversibly transformed into mullite crystal (short column-shaped and needle-shaped network structure). The expansion rate of 'three stones' is related to the purity, the granularity, the impurity composition and the content of the respective minerals. The andalusite and sillimanite have small volume expansion and good volume stability when being converted into mullite, and can be directly used for making bricks or partially introduced for use without presintering. The large volume expansion of kyanite can be used as an expanding agent of unshaped refractory material or partially introduced into brick making. (3) The unburned furnace cover brick is a new variety developed in recent years, and has the advantages of simplified production process, energy conservation, better thermal shock resistance and erosion resistance, slightly poor structural strength and larger influence of a packaging method and environment on performance and storage period. The effective measure for improving the high-temperature performance of the furnace cover brick is to adopt additives such as SiC, MgO, A1203, C and the like to the high-aluminum unburned brick or to carry out light-burned oil immersion treatment. The chemical bonding brick added with SiC has good thermal shock resistance and erosion resistance. (4) The integral pouring furnace cover uses fire-resistant precast blocks in the triangular area of the electric furnace cover, and the main materials of the fire-resistant precast blocks comprise corundum, chromium corundum, high-aluminum, mullite and the like. The refractory precast block has better integrity and erosion resistance, simple and convenient masonry construction and relatively guaranteed construction quality, so that the integral quality of the electric furnace cover is greatly improved. The common triangular area of the ultra-high power electric furnace cover adopts corundum (chrome corundum) prefabricated parts. The high-aluminum and mullite prefabricated blocks are widely used in the high-power electric furnace cover triangular area.

The service life of the furnace cover is a main factor directly influencing the whole service life of the melting furnace and the working efficiency of the melting furnace. The furnace cover has various structural types and various building materials. The building material of bell among the prior art can satisfy current user demand, but structurally generally adopts traditional structure, when bell below pressure was too big, will have gas to pass through the blast pipe and discharge, not only polluted environment, still makes the atmosphere in the stove can not stably be adjusted, and the use of bell has the defect that the life is short, can't satisfy the demand to long life. Therefore, it is an urgent problem to develop a furnace cover that can be used for a longer time. The furnace cover has long service life, improves the working efficiency, reduces the cost and can effectively solve the problem of short service life of the furnace cover caused by unreasonable design in the existing furnace cover structure.

SUMMERY OF THE UTILITY MODEL

To the above situation, for solving prior art's defect, the utility model aims at providing a high temperature resistant long life little bell, can effectively solve under the current bell structure, the problem that bell life is short.

The utility model provides a technical scheme be, a high temperature resistant long life little bell includes cylindrical lid, intake pipe and blast pipe, the foundation ring external diameter of cylindrical lid is the same with the internal diameter of the fire door of furnace body, the smelting pot is in the course of the work, can not have a large amount of heats to scatter from the fire door and fall, intake pipe and blast pipe all are located the inside of lid, pass from the internal portion of lid, the two forms gas channel through the trachea switch-on, the top cap of cylindrical lid is flat top cap, there is rings above the top cap, be used for removing the bell, be equipped with the tamping layer in the top cap, be equipped with the stainless steel spring in the tamping layer, guarantee that the bell removes the in-process and. The utility model discloses novel structure, simple and practical when guaranteeing to smelt safety, has also reduced environmental pollution, has increased the life of bell, has wide development prospect in smelting the cause, and economy and social are showing. Solves the problem of short service life of the furnace cover caused by unstable air pressure in the furnace in the prior art,

the utility model discloses a structural design has fully adopted the knowledge of heat transfer science, engineering thermodynamics, aerodynamic, synthesizes multiple factor and considers, designs to reach the purpose that increases bell life in hope. The beneficial effects of the utility model reside in that, under the condition of intake pipe and blast pipe combined action, guaranteed the atmosphere in the stove, increased the security of smelting pot, can effectively stop because the danger that the atmospheric pressure sharply changes and arouse in the stove, increased the life of bell, improved production efficiency, practiced thrift manufacturing cost. The furnace cover is safe and convenient to build, and is an innovation in the furnace cover technology.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a front view of the structure of the present invention.

Fig. 3 is the structural schematic diagram of the hanging ring of the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Given by fig. 1-3, the utility model discloses a lid 1, intake pipe 2 and blast pipe 3, the foundation ring external diameter of lid 1 is the same with the internal diameter of the fire door of furnace body, intake pipe 2 and blast pipe 3 all are located the inside of lid 1, pass from the inside of lid 1, and the two forms gas channel through the switch-on of trachea 4, and the top cap of lid 1 is flat top cap, has rings 5 above the top cap for remove the bell, and the inside tamping layer 6 that is equipped with of top cap, the inside of tamping layer 6 is equipped with stainless steel spring 7.

In order to ensure the use effect and the convenient installation and use,

the cover body 1 is circular, and the shape of the cover body 1 is similar to that of the furnace mouth, so that the cover body and the furnace mouth are in close contact.

The outer diameter of the bottom ring of the cover body 1 is the same as the inner diameter of the furnace opening of the furnace body.

The air inlet pipe 2 and the exhaust pipe 3 are both arranged in the cover body 1 and penetrate through the cover body 1, and the air inlet pipe 2 and the exhaust pipe are communicated through the air pipe 4 to form a gas channel, so that the atmosphere in the furnace is ensured.

The top cap of lid 1 be flat top cap, there is rings 5 on the top cap for remove the bell, and be equipped with tamping layer 6 in the top cap, tamping layer 6's inside is equipped with stainless steel spring 7, ensures that the bell removes the in-process and does not receive violent vibrations.

However, the applicant should note that the above-mentioned structure is only used as an implementation for explaining the specific embodiments of the present invention, and not for limiting the present invention, and any equivalent substitution and modification made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Compared with the prior art, the utility model has the following outstanding advantage: the utility model discloses in the aspect of structural design, fully adopted the knowledge of heat transfer science, engineering thermodynamics, aerodynamic, synthesized multiple factor and considered, structural design is reasonable, and job stabilization has both increased thermal cyclic utilization, has improved heat availability factor, has practiced thrift the energy, has reached the purpose that increases bell life again. The furnace cover is safe and practical, is an innovation on the technology of the high-temperature-resistant long-service-life small furnace cover, and has good economic and ecological benefits.

Claims

1. The utility model provides a high temperature resistant long life small furnace lid, includes lid (1), intake pipe (2) and blast pipe (3), its characterized in that: the inner diameter of the base ring external diameter of lid (1) and the fire door of furnace body is the same, intake pipe (2) and blast pipe (3) all be located the inside of lid (1), pass from the inside of lid (1), the two forms gas passage through trachea (4) switch-on, the top cap of lid (1) be flat top cap, have rings (5) above the top cap for remove the bell, be equipped with in the top cap and smash layer (6), the inside of tamping layer (6) is equipped with stainless steel spring (7).

2. The high temperature resistant long life small furnace lid of claim 1, wherein: the shape of the cover body (1) is circular, and the shape of the cover body (1) is similar to that of the furnace mouth, so that the cover body and the furnace mouth are in close contact.

3. The high temperature resistant long life small furnace lid of claim 1, wherein: the outer diameter of the bottom ring of the cover body (1) is the same as the inner diameter of the furnace opening of the furnace body, so that the cover body (1) is in close contact with the furnace opening to seal the furnace opening.