阅读说明：本技术 一种电阻式加热竖炉 (Resistance type heating shaft furnace ) 是由 陈漪恺 陈来祥 于 2020-08-24 设计创作，主要内容包括：本发明涉及一种电阻式加热竖炉。所述电阻式加热竖炉包括进料模块、竖炉炉体、加热模块、电源模块以及出料模块；所述竖炉炉体分别与所述进料模块以及所述出料模块匹配设置,形成封闭的空间；所述封闭的空间为竖炉炉腔；所述加热模块设置在竖炉炉体内,所述加热模块用于加热所述竖炉炉体；所述电源模块与所述加热模块电连接,所述电源模块用于对所述加热模块进行供电。本发明所提供的一种电阻式加热竖炉,改善加热环境,提高热效率。(The invention relates to a resistance heating shaft furnace. The resistance type heating shaft furnace comprises a feeding module, a shaft furnace body, a heating module, a power supply module and a discharging module; the shaft furnace body is respectively matched with the feeding module and the discharging module to form a closed space; the closed space is a shaft furnace chamber; the heating module is arranged in the shaft furnace body and is used for heating the shaft furnace body; the power module is electrically connected with the heating module and is used for supplying power to the heating module. The resistance-type heating shaft furnace provided by the invention has the advantages that the heating environment is improved, and the heat efficiency is improved.)

1. An electrical resistance heating shaft furnace, comprising: the device comprises a feeding module, a shaft furnace body, a heating module, a power supply module and a discharging module;

the shaft furnace body is respectively matched with the feeding module and the discharging module to form a closed space; the closed space is a shaft furnace chamber;

the heating module is arranged in the shaft furnace body and is used for heating the shaft furnace body;

the power module is electrically connected with the heating module and is used for supplying power to the heating module.

2. The resistance heating shaft furnace of claim 1, wherein the shaft furnace body comprises a furnace body shell, a furnace body thermal insulation layer, a hearth high-temperature thermal insulation layer and a hearth high-temperature resistant refractory layer;

the furnace body shell, the furnace body heat preservation and insulation layer, the hearth high-temperature insulation layer and the hearth high-temperature resistant fire-resistant layer are sequentially arranged from the outside to the shaft furnace chamber.

3. The electrical resistance heating shaft furnace of claim 2, wherein the heating module comprises: the device comprises a resistance heating element, a refractory material bracket and a partition board;

the resistance heating element is arranged on the refractory material bracket and is electrically connected with the power supply module; the refractory material bracket is arranged on the partition plate; the baffle is arranged on the high-temperature resistant refractory layer of the hearth.

4. The resistance heating shaft furnace of claim 3, wherein said resistance heating element is a plurality of;

the plurality of resistance heating elements are uniformly arranged on the refractory material bracket.

5. The resistance heating shaft furnace of claim 1, wherein the power module comprises: the power supply comprises a power supply conduit, a power supply anode and a power supply cathode;

and the power supply anode and the power supply cathode both penetrate through the power supply conduit to be connected with the heating module.

6. The resistance heating shaft furnace of claim 1, wherein the feed module comprises: a conveyor belt, a hopper and a bell;

the first conveyor belt, the hopper and the bell are arranged in sequence.

7. The resistance heating shaft furnace of claim 1, wherein the outfeed module comprises: the gate plate, the ejector pin, the hydraulic device and the second conveying belt;

the second conveying belt, the gate plate, the ejector pins and the hydraulic device are sequentially arranged.

8. The resistance heating shaft furnace of claim 1, further comprising: the temperature measuring module and the control module;

the temperature measuring module penetrates through the shaft furnace body of the shaft furnace and is in contact with the furnace chamber of the shaft furnace; the temperature measuring module is used for acquiring a temperature signal of the furnace chamber of the shaft furnace;

the control module is respectively connected with the temperature measuring module and the power supply module; the control module is used for controlling the power module to be turned on or turned off according to the temperature signal.

9. The resistance heating shaft furnace of claim 1, wherein the thermometry module comprises: a thermocouple and a signal transmitter;

the thermocouple is in contact with the furnace chamber of the shaft furnace and is used for acquiring a temperature signal of the furnace chamber of the shaft furnace;

the signal transmitter is respectively connected with the thermocouple and the control module; the signal transmitter is used for transmitting the temperature signal to the controller module.

Technical Field

The invention relates to the field of electric heating furnaces, in particular to a resistance type heating shaft furnace.

Background

The shaft furnace (kiln) is one of the furnaces for heating materials in the industries of metallurgy, chemical industry, building and the like, and the heating mode of the shaft furnace (kiln) is divided into external heating and internal heating according to the heating position of a heat source. The external heating shaft kiln is characterized in that a furnace body of the external heating shaft kiln is generally made of metal materials so as to facilitate heat transfer, but the metal materials are easily oxidized and damaged after being heated and heat transfer for a long time; the heating temperature of the external heating mode is limited by the metal material of the furnace body, and the maximum use temperature is generally lower (generally lower than 950 ℃); meanwhile, the heat is transferred through the furnace body, and the heat efficiency is low; so that the shaft furnace of the external heating type is hardly adopted. The internal heating shaft furnace is generally heated by adopting gas, fuel oil and coal or coal gasification, and simultaneously air or oxygen is introduced, so that the heated materials have certain oxidation resistance and low requirements on pollution caused by fuels, such as a lime shaft kiln and a cement clinker shaft kiln. If the material to be heated is a material which is easy to oxidize, such as alloy and the like, metal materials and the like, other heating methods such as electric heating are needed, and the electric heating is not adopted in the current internal heating type shaft furnace.

In summary, the existing shaft furnaces are all in an internal heating mode, and the heat sources mainly used are gas, fuel oil, coal or coal gasification and the like. Such shaft furnaces have limited use in heating oxidisable materials and under conditions requiring a vacuum or reducing atmosphere in the furnace.

Disclosure of Invention

The invention aims to provide a resistance type heating shaft furnace, which improves the heating environment and the heat efficiency.

In order to achieve the purpose, the invention provides the following scheme:

a resistance heating shaft furnace comprising: the device comprises a feeding module, a shaft furnace body, a heating module, a power supply module and a discharging module;

the shaft furnace body is respectively matched with the feeding module and the discharging module to form a closed space; the closed space is a shaft furnace chamber;

the heating module is arranged in the shaft furnace body and is used for heating the shaft furnace body;

the power module is electrically connected with the heating module and is used for supplying power to the heating module.

Optionally, the shaft furnace body comprises a furnace body shell, a furnace body heat-insulating layer, a hearth high-temperature heat-insulating layer and a hearth high-temperature-resistant fire-resistant layer;

the furnace body shell, the furnace body heat preservation and insulation layer, the hearth high-temperature insulation layer and the hearth high-temperature resistant fire-resistant layer are sequentially arranged from the outside to the shaft furnace chamber.

Optionally, the heating module includes: the device comprises a resistance heating element, a refractory material bracket and a partition board;

the resistance heating element is arranged on the refractory material bracket and is electrically connected with the power supply module; the refractory material bracket is arranged on the partition plate; the baffle is arranged on the high-temperature resistant refractory layer of the hearth.

Optionally, the number of the resistance heating elements is multiple;

the plurality of resistance heating elements are uniformly arranged on the refractory material bracket.

Optionally, the power module includes: the power supply comprises a power supply conduit, a power supply anode and a power supply cathode;

and the power supply anode and the power supply cathode both penetrate through the power supply conduit to be connected with the heating module.

Optionally, the feeding module comprises: a first conveyor, a hopper and a bell;

the first conveyor belt, the hopper and the bell are arranged in sequence.

Optionally, the discharging module includes: the gate plate, the ejector pin, the hydraulic device and the second conveying belt;

the gate plate, the ejector pin, the hydraulic device and the second conveying belt.

Optionally, the resistance heating shaft furnace further comprises: the temperature measuring module and the control module;

the temperature measuring module penetrates through the shaft furnace body of the shaft furnace and is in contact with the furnace chamber of the shaft furnace; the temperature measuring module is used for acquiring a temperature signal of the furnace chamber of the shaft furnace;

the control module is respectively connected with the temperature measuring module and the power supply module; the control module is used for controlling the power module to be turned on or turned off according to the temperature signal.

Optionally, the temperature measuring module includes: a thermocouple and a signal transmitter;

the thermocouple is in contact with the furnace chamber of the shaft furnace and is used for acquiring a temperature signal of the furnace chamber of the shaft furnace;

the signal transmitter is respectively connected with the thermocouple and the control module; the signal transmitter is used for transmitting the temperature signal to the controller module.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

according to the resistance type heating shaft furnace provided by the invention, the heating module is arranged in the shaft furnace body of the shaft furnace, so that the material in the cavity of the shaft furnace is heated. The defects that materials are heated by fuel gas, fuel oil, coal or coal gasification and the like in the conventional shaft furnace and oxygen is required to be supplied, namely the materials are heated in an aerobic atmosphere to limit the materials which are easy to oxidize and the materials need to be heated in a reducing atmosphere or under a vacuum condition, a large amount of smoke is generated by heating the fuel gas and the like to take away a large amount of heat, the heat efficiency is low, the generated smoke pollutes the heated materials and pollutes the environment, and the problems that the combustion mechanism introduced by fuel combustion is complex, the cost is increased, the air permeability between the heated materials is strict and the like are solved. The invention improves the heating environment, improves the heat efficiency, can effectively control the furnace atmosphere, can adjust the heating temperature in a wide range, widens the types of the heated materials, and has wider applicability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of a resistance heating shaft furnace according to the present invention;

FIG. 2 is a top view of a resistance heating shaft furnace having a differently shaped furnace chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a resistance type heating shaft furnace, which improves the heating environment and the heat efficiency.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Fig. 1 is a schematic structural view of a resistance heating shaft furnace provided by the present invention, and as shown in fig. 1, the resistance heating shaft furnace provided by the present invention comprises: the device comprises a feeding module 1, a shaft furnace body, a heating module, a power supply module and a discharging module 12.

The shaft furnace body is respectively matched with the feeding module 1 and the discharging module 12 to form a closed space; the closed space is a furnace chamber of the shaft furnace.

The heating module is arranged in the shaft furnace body and used for heating the shaft furnace body.

The power module is electrically connected with the heating module and is used for supplying power to the heating module.

The voltage of the power supply module is different according to different types of heated materials and different atmospheres in a furnace cavity of the shaft furnace. Namely, the temperature in the cavity of the shaft furnace is controlled by the electric heating power output by the power module. The temperature in the furnace chamber of the shaft furnace can be adjusted in a wide range (room temperature-1700 ℃), and the method is suitable for the requirements of various materials on the heating temperature.

The shaft furnace body comprises a furnace body shell 2, a furnace body heat-insulating layer 3, a hearth high-temperature heat-insulating layer 4 and a hearth high-temperature-resistant fire-resistant layer 5.

The furnace body shell 2, the furnace body heat preservation and insulation layer 3, the hearth high-temperature insulation layer 4 and the hearth high-temperature resistant fire-resistant layer 5 are sequentially arranged from outside to the shaft furnace chamber.

The heating module includes: resistance heating element 8, refractory support and partition 11.

The resistance heating element 8 is arranged on the refractory material bracket, and the resistance heating element 8 is electrically connected with the power supply module; the refractory material bracket is arranged on the partition plate 11; the partition plate 11 is arranged on the high-temperature-resistant refractory layer 5 of the hearth.

The material of the partition plate 11 has high temperature resistance, wear resistance and good heat conductivity.

The material in the furnace is directly heated by heating through the resistance heating element 8, and the whole heating process is not influenced by the type, shape and fluidity of the material.

The resistance heating element 8 is made of silicon carbon, silicon molybdenum, metal molybdenum, iron chromium aluminum and the like; the resistance heating element 8 is in the shape of a filament, a plate or a rod. The resistance heating element 8 may be disposed horizontally or vertically, but is not limited thereto.

In order to improve the heating efficiency, the resistance heating element 8 is provided in plurality.

The plurality of resistance heating elements 8 are uniformly arranged on the refractory material support.

The power module includes: a power supply conduit 6, a power supply anode 7 and a power supply cathode 10; in order to ensure the safety of the power supply, the power supply conduit 6 is made of heat-resistant and insulating materials, such as a corundum tube, a graphite tube and the like.

The power supply anode 7 and the power supply cathode 10 both penetrate through the power supply conduit 6 to be connected with the heating module.

During heating, the positive power supply 7, the resistance heating element 8, and the negative power supply 10 form a power supply circuit.

The feed module 1 comprises: conveyer belt, hopper and bell.

The first conveyor belt, the hopper and the bell are arranged in sequence.

The outfeed module 12 comprises: flashboard, thimble and hydraulic means, second conveyer belt.

The gate plate, the ejector pin, the hydraulic device and the second conveying belt.

Said shaft furnace further comprising: temperature measurement module 9 and control module.

The temperature measuring module 9 penetrates through the shaft furnace body of the shaft furnace and is in contact with the furnace chamber of the shaft furnace; the temperature measuring module 9 is used for acquiring a temperature signal of the furnace chamber of the shaft furnace.

The control module is respectively connected with the temperature measuring module 9 and the power supply module; the control module is used for controlling the power module to be turned on or turned off according to the temperature signal.

The temperature measuring module 9 includes: a thermocouple and a signal transmitter.

The thermocouple is in contact with the furnace chamber of the shaft furnace and is used for acquiring a temperature signal of the furnace chamber of the shaft furnace.

The thermocouple is a platinum-platinum rhodium thermocouple.

The signal transmitter is respectively connected with the thermocouple and the control module; the signal transmitter is used for transmitting the temperature signal to the controller module.

Fig. 2 is a top view of a resistance heating shaft furnace having different shapes, such as a square shape in a portion a of fig. 2, a rectangular shape in a portion b of fig. 2, and a circular shape in a portion c of fig. 2.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, the contents of the embodiments in the present specification should not be construed as limiting the present invention.