Hearth heating device of sintering furnace

Abstract

The utility model discloses a hearth heating device of a sintering furnace, which relates to the field of sintering furnaces, solves the problem that the existing built-in fixed electric heating component has a poor heating effect on non-circulating airflow, and adopts the following scheme that the hearth heating device comprises a sintering hearth body, an air exhaust seat and an air guide seat are assembled on the sintering hearth body; a fan seat is fixedly mounted on the air exhaust seat; the sintering furnace hearth body comprises an outer furnace layer and an inner furnace layer which are sleeved with each other, a spiral air groove is formed in the side wall of the outer furnace layer, and a spiral electric heating wire is installed in the air groove; according to the hearth heating device of the sintering furnace, through the arrangement of the air exhaust base at the right end of the sintering hearth body, air on the inner side of the sintering hearth body can be extracted from the sintering hearth body into the air groove and makes contact with the electric heating wire to achieve rapid temperature rise, and then heated high-temperature air is exhausted to the inner side of the sintering hearth body from the tail end through the air guide groove in the air guide base; and therefore, the effect of efficient heat circulation of all gas on the inner side of the sintering hearth body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, in particular to a furnace heating device for a sintering furnace. Background Art

[0002] During the sintering process, in order to ensure the smooth transformation of the powder compact's structure, the sintering temperature, compact conveying method, heating and cooling speed, etc. need to be precisely controlled during sintering;

[0003] After searching, the application with patent application number 202221125571.4 discloses a furnace heating device for a sintering furnace, which relates to the field of sintering furnace structure, including a horizontal furnace body with narrowed ends, an electric heating group arranged around the inner wall of the furnace body, a heat-scaling fan arranged on the top of the furnace body, and an exhaust pipe installed at the bottom of the furnace body, wherein the heat-scaling fan is installed in a sealed box, an air intake valve is installed on the sealed box, and an electric control valve is installed on the exhaust pipe; the electric heating group includes an electric heating rod arranged in a bent shape and a heat-scaling plate wound around the outer periphery of the electric heating rod in a spiral sheet shape. The utility model can effectively increase the sintering space in the furnace body by narrowing the furnace body at both ends, while reducing heat loss during the feeding and unloading process of the conveyor belt; heating by an electric heating rod equipped with a heat-scaling plate can greatly improve the heating and sintering efficiency; by providing a heat-scaling fan, the uniformity of temperature distribution during the sintering process can be improved, thereby improving the quality of the sintered product;

[0004] The above application document heats the gas in the furnace through an electric heating component and achieves uniformity through a fan. However, the setting of the built-in electric heating component firstly occupies the space inside the furnace, and secondly, the airflow circulation effect on the surrounding side is poor, and the gas on the middle side is less affected, which may lead to uneven heating and poor heating effect.

[0005] Therefore, we propose a furnace heating device for a sintering furnace. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a furnace heating device for a sintering furnace, which solves the problem that the existing built-in fixed electric heating components have poor heating effect on non-circulating airflow.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: A furnace heating device for a sintering furnace, comprising a sintering furnace body, both ends of the sintering furnace body are respectively equipped with an exhaust seat and an air guide seat, a fan seat is fixedly installed on the exhaust seat, and a furnace cover is clamped on the air guide seat;

[0008] The sintering furnace body comprises an outer furnace layer and an inner furnace layer which are set together, a spiral gas groove is opened in the side wall of the outer furnace layer, a spiral electric heating wire is installed in the gas groove, and an electric heating seat with an output end of the electric heating wire is fixedly installed on the outer wall of the sintering furnace body;

[0009] The exhaust seat comprises an outer exhaust shell and an inner exhaust shell inside thereof, an air inlet pipe connected to the inner cavity of the sintering furnace body is fixedly installed at the center of the inner exhaust shell, and an exhaust cavity is arranged between the outer exhaust shell and the inner exhaust shell;

[0010] The air guide seat comprises an outer air guide shell and an inner air guide shell, an air guide groove is arranged between the outer air guide shell and the inner air guide shell, and a furnace cover is mounted on the outer end of the outer air guide shell.

[0011] Preferably, the inner furnace layer is a ceramic fiber insulation layer;

[0012] Among them, the setting of the inner furnace layer material can ensure the thermal insulation of the inner cavity of the sintering furnace.

[0013] Preferably, the outer furnace layer is composed of a refractory concrete layer, an insulating concrete layer, a refractory brick layer and a refractory fiber felt layer from the inside to the outside;

[0014] The material setting of the outer furnace layer can ensure the heat preservation of the heated gas flowing in the gas tank.

[0015] Preferably, the exhaust cavity in the exhaust seat is connected to the right end of the gas groove in the sintering furnace body, and the air guide groove is connected to the left end of the gas groove;

[0016] Among them, the setting of the exhaust chamber can input the gas extracted by the fan base into the gas groove for electric heating, and re-input the heated gas into the inner cavity of the sintering furnace body from the left end through the air guide groove, thereby achieving the effect of rapidly heating the inner cavity of the sintering furnace body.

[0017] Preferably, the exhaust cavity is the output end of the fan seat installed on the exhaust seat, and the air inlet pipe is the input end of the fan seat;

[0018] The fan base can utilize the air inlet pipe to extract the gas in the inner cavity of the sintering furnace body into the exhaust cavity, and then transport it to the gas groove to achieve the effect of air flow conduction.

[0019] Preferably, the exhaust seat and the air guide seat are both made of ceramic fiber insulation material;

[0020] Among them, the materials of the exhaust seat and the air guide seat can effectively insulate the airflow when converting it, avoiding the occurrence of low thermal efficiency due to heat loss.

[0021] The utility model provides a furnace heating device for a sintering furnace, which has the following beneficial effects:

[0022] 1. The furnace heating device of the sintering furnace can extract the inner gas from the sintering furnace body into the gas groove through the arrangement of the exhaust seat at the right end of the sintering furnace body, and make it contact with the electric heating wire to achieve rapid temperature rise, and then the air guide groove in the air guide seat discharges the heated high-temperature gas from the tail end to the inner side of the sintering furnace body, thereby achieving the effect of efficient heat circulation of all the gas inside the sintering furnace body, and simultaneously ensuring its heating efficiency, solving the problem that the existing built-in fixed electric heating component has poor heating effect on non-circulating airflow;

[0023] 2. The furnace heating device of the sintering furnace can ensure the heat preservation effect by using the material setting through the setting of the sintering furnace body. At the same time, the electric heating wire installed on the inside and the setting of the air groove can not occupy any sintering space in the inner cavity of the sintering furnace body, so as to sinter a sufficient amount of material at high temperature, and the temperature can be continuously increased during the sintering process to ensure practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the sintering furnace body of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the vacuum seat of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the air guide seat of the utility model.

[0028] In the figure: 1. sintering furnace body; 11. outer furnace layer; 12. inner furnace layer; 13. air trough; 14. electric heating wire; 2. exhaust seat; 21. outer exhaust shell; 22. inner exhaust shell; 23. air inlet pipe; 24. exhaust cavity; 3. air guide seat; 31. outer air guide shell; 32. inner air guide shell; 33. air guide trough; 4. fan seat; 5. furnace cover. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-4The embodiment of the utility model provides a technical solution: a furnace heating device for a sintering furnace, comprising a sintering furnace body 1, wherein an exhaust seat 2 and an air guide seat 3 are respectively mounted at both ends of the sintering furnace body 1, a fan seat 4 is fixedly mounted on the exhaust seat 2, and a furnace cover 5 is clamped on the air guide seat 3; the sintering furnace body 1 comprises an outer furnace layer 11 and an inner furnace layer 12 which are set together, a spiral gas groove 13 is opened in the side wall of the outer furnace layer 11, and an electric heating wire 14 which is also spiral is installed in the gas groove 13, and the sintering furnace body 1 An electric heating seat with an output end of an electric heating wire 14 is fixedly installed on the outer wall; the exhaust seat 2 includes an outer exhaust shell 21 and an inner exhaust shell 22 inside thereof, an air inlet pipe 23 connected to the inner cavity of the sintering furnace body 1 is fixedly installed at the center of the inner exhaust shell 22, and an exhaust cavity 24 is arranged between the outer exhaust shell 21 and the inner exhaust shell 22; the air guide seat 3 includes an outer air guide shell 31 and an inner air guide shell 32, an air guide groove 33 is arranged between the outer air guide shell 31 and the inner air guide shell 32, and a furnace cover 5 is assembled at the outer end of the outer air guide shell 31;

[0031] Among them, the furnace heating device of the sintering furnace, through the setting of the exhaust seat 2 at the right end of the sintering furnace body 1, can extract the inner gas from the sintering furnace body 1 into the gas groove 13, and contact with the electric heating wire 14 to achieve rapid heating, and then the air guide groove 33 in the air guide seat 3 discharges the heated high-temperature gas from the tail end to the inside of the sintering furnace body 1, thereby achieving the effect of efficient heat circulation of all the gases inside the sintering furnace body 1, and simultaneously ensuring its heating efficiency, solving the problem that the existing built-in fixed electric heating component has poor heating effect for non-circulating airflow.

[0032] Embodiment 2:

[0033] The inner furnace layer 12 is a ceramic fiber insulation layer; wherein, the material setting of the inner furnace layer 12 can ensure the thermal insulation of the inner cavity of the sintering furnace body 1 .

[0034] The outer furnace layer 11 is composed of a refractory concrete layer, an insulating concrete layer, a refractory brick layer and a refractory fiber felt layer from the inside to the outside. The material setting of the outer furnace layer 11 can ensure the thermal insulation of the heated gas flowing in the gas groove 13.

[0035] The exhaust chamber 24 in the exhaust seat 2 is connected to the right end of the gas groove 13 in the sintering furnace body 1, and the air guide groove 33 is connected to the left end of the gas groove 13; wherein, the setting of the exhaust chamber 24 can input the gas extracted by the fan seat 4 into the gas groove 13 for electric heating, and the heated gas is re-input into the inner cavity of the sintering furnace body 1 from the left end by the air guide groove 33, thereby achieving the effect of rapidly heating the inner cavity of the sintering furnace body 1.

[0036] The exhaust chamber 24 is the output end of the fan base 4 installed on the exhaust base 2, and the air inlet pipe 23 is the input end of the fan base 4; wherein, the fan base 4 can use the air inlet pipe 23 to extract the gas in the inner cavity of the sintering furnace body 1 into the exhaust chamber 24, and transport it to the air groove 13 to achieve the effect of air flow conduction.

[0037] The exhaust seat 2 and the air guide seat 3 are both made of ceramic fiber insulation material; wherein, the materials of the exhaust seat 2 and the air guide seat 3 can effectively insulate the airflow when converting the airflow, thereby avoiding the occurrence of low thermal efficiency due to heat loss.

[0038] In addition, the furnace heating device of the sintering furnace can ensure its thermal insulation effect by utilizing the material setting of the sintering furnace body 1. At the same time, the electric heating wire 14 installed on the inside and the air groove 13 provided can not occupy any sintering space in the inner cavity of the sintering furnace body 1, so that a sufficient amount of material can be sintered at high temperature, and the temperature can be continuously increased during the sintering process to ensure practicality.

[0039] The working principle and use process of the utility model are as follows: when the device is needed to work, turn on the electric heating wire 14 and the fan seat 4 installed on the exhaust seat 2, and the fan seat 4 draws the airflow in the inner cavity of the sintering furnace body 1 into the exhaust cavity 24 through the air inlet pipe 23, and simultaneously transports it to the air groove 13 to contact with the electric heating wire 14, thereby achieving the effect of efficiently heating the passing airflow, and the heated airflow is transported from the tail end of the air groove 13 to the air guide groove 33, and then re-input into the inner cavity of the sintering furnace body 1 from the tail end of the sintering furnace body 1, thereby achieving the effect of flowing and efficiently heating the gas in the inner cavity of the sintering furnace body 1.

[0040] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A furnace heating device for a sintering furnace, characterized in that: It comprises a sintering furnace body (1), wherein two ends of the sintering furnace body (1) are respectively equipped with an exhaust seat (2) and an air guide seat (3), a fan seat (4) is fixedly mounted on the exhaust seat (2), and a furnace cover (5) is clamped on the air guide seat (3); The sintering furnace body (1) comprises an outer furnace layer (11) and an inner furnace layer (12) which are mounted together, a spiral gas groove (13) is provided in the side wall of the outer furnace layer (11), a spiral electric heating wire (14) is installed in the gas groove (13), and an electric heating seat with an output end of the electric heating wire (14) is fixedly installed on the outer wall of the sintering furnace body (1); The exhaust seat (2) comprises an outer exhaust shell (21) and an inner exhaust shell (22) inside thereof, an air inlet pipe (23) connected to the inner cavity of the sintering furnace body (1) is fixedly installed at the center of the inner exhaust shell (22), and an exhaust cavity (24) is provided between the outer exhaust shell (21) and the inner exhaust shell (22); The air guide seat (3) comprises an outer air guide shell (31) and an inner air guide shell (32), an air guide groove (33) is provided between the outer air guide shell (31) and the inner air guide shell (32), and a furnace cover (5) is mounted on the outer end of the outer air guide shell (31).

2. The furnace heating device of a sintering furnace according to claim 1, characterized in that: The inner furnace layer (12) is a ceramic fiber heat insulation layer.

3. The furnace heating device of a sintering furnace according to claim 2, characterized in that: The outer furnace layer (11) comprises, from the inside to the outside, a refractory concrete layer, an insulating concrete layer, a refractory brick layer and a refractory fiber felt layer.

4. The furnace heating device of a sintering furnace according to claim 1, characterized in that: The exhaust cavity (24) in the exhaust seat (2) is connected to the right end of the gas groove (13) in the sintering furnace body (1), and the air guide groove (33) is connected to the left end of the gas groove (13).

5. The furnace heating device of a sintering furnace according to claim 1, characterized in that: The exhaust cavity (24) is the output end of the fan base (4) installed on the exhaust base (2), and the air inlet pipe (23) is the input end of the fan base (4).

6. The furnace heating device of a sintering furnace according to claim 1, characterized in that: The air extraction seat (2) and the air guide seat (3) are both made of ceramic fiber heat insulation material.

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