CN218646036U

CN218646036U - Gas sintering furnace body for manganese-zinc ferrite

Info

Publication number: CN218646036U
Application number: CN202222988696.6U
Authority: CN
Inventors: 颜林波; 王世刚; 段红松; 王翼伦; 陈彭
Original assignee: Hunan Shuoke Thermal Intelligent Equipment Co ltd
Current assignee: Hunan Shuoke Thermal Intelligent Equipment Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-17
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a gas sintering furnace body for manganese zinc ferrite, including furnace and transport mechanism, furnace falls into heating chamber and heating chamber down through holding the fever baffle, transport mechanism locates down and heats the intracavity, and heating chamber all is equipped with the radiant tube combustor with heating intracavity down, and transport mechanism's below is located to the radiant tube combustor of heating intracavity down, and the radiant tube combustor includes nozzle and radiant tube, and the burner tip is worn to establish on the furnace lateral wall, and radiant tube one end is connected with the burner tip, and the other end is unsettled in furnace or wears to establish on the lateral wall of furnace opposite side. The utility model discloses a radiant tube combustor carries out indirect heating to the product, can not exert an influence to the atmosphere in the furnace, avoids the disturbance of atmosphere in the furnace, has guaranteed the stability of atmosphere in the kiln, has realized replacing electricity with gas, reaches the energy saving, adopts the radiant tube combustor, and life is longer than the electric heat components and parts, and the maintenance cost is lower, has reduced the cost, is applicable to the sintering of manganese zinc ferrite.

Description

Gas sintering furnace body for manganese-zinc ferrite

Technical Field

The utility model relates to a manganese zinc ferrite sintering equipment especially relates to a gas sintering furnace body for manganese zinc ferrite.

Background

At present, the manganese-zinc ferrite is sintered by mostly adopting a nitrogen atmosphere to protect an electric heating push plate furnace, heating components are a silicon-carbon rod and a silicon-molybdenum rod, a resistance wire is sometimes used in a low-temperature region, the electrochemical reaction of the components is small, and the interference to the atmosphere in the furnace is small, so that the manganese-zinc ferrite is always the most common sintering equipment at present, and the production cost of nitrogen is high relative to that of a gas kiln. The gas kiln is generally applied to sintering of other ceramic materials with low requirements on air atmosphere or kiln internal atmosphere, such as sintering of products of nickel zinc, electronic ceramics and the like, and has not been practically applied to equipment for sintering manganese zinc ferrite by replacing electric energy with gas.

From a thermal balance point of view, gas kilns consume much more energy than electric kilns, i.e. are much less thermally efficient, due to the large losses caused by the flue gases from gas kilns. However, in terms of energy price, the electricity cost is much higher than the gas cost, because the conversion efficiency from coal to electricity to heat is lower than 30% as a secondary energy, and the conversion cost is also higher. The cost of the natural gas and the liquefied petroleum gas is much lower than the electricity consumption.

Most of push plate furnaces in the manganese-zinc ferrite industry use electricity as energy, in many areas, industrial electricity is expensive, and the cost of enterprises is high, mainly because the kiln consumes more electricity. In order to save energy cost, a scheme of replacing electricity with gas is provided in many industries, and after an electric kiln is changed into a gas kiln, the firing cost of a product can be reduced by 1/2-1/3. However, most of burners and combustion systems adopt a flame direct heating mode, i.e. direct ignition combustion is performed in a kiln, so that certain stability of the atmosphere in the kiln is difficult to ensure; the manganese zinc ferrite sintering process is special, and has strict requirements on temperature and atmosphere, so that the manganese zinc ferrite sintering equipment cannot be applied by adopting a nozzle flame heating mode.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a gas sintering furnace body for manganese zinc ferrite of having guaranteed the stability of the interior atmosphere of kiln, having reduced the cost.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a gas sintering furnace body for manganese zinc ferrite, includes furnace and transport mechanism, furnace falls into heating chamber and lower heating chamber through holding the fever baffle, transport mechanism locates down and heats the intracavity, it all is equipped with the radiant tube combustor with lower heating intracavity to go up the heating chamber, transport mechanism's below is located to the radiant tube combustor of heating intracavity down, the radiant tube combustor includes nozzle and radiant tube, the burner tip is worn to establish on the furnace lateral wall, radiant tube one end is connected with the burner tip, and the other end is unsettled in furnace or wears to establish on the lateral wall of furnace opposite side.

As a further improvement of the above technical solution: the radiant tube burner further comprises a heat exchanger, and the heat exchanger is located in the radiant tube.

As a further improvement of the technical scheme: the radiant tube burner in the upper heating cavity is opposite to the radiant tube burner in the lower heating cavity.

As a further improvement of the above technical solution: the radiant tube combustor is provided with a gas inlet pipe, an air inlet pipe and a smoke exhaust pipe which are respectively connected with the burner tips, and the gas inlet pipe, the air inlet pipe and the smoke exhaust pipe are all arranged outside the hearth.

As a further improvement of the above technical solution: the side wall of the upper heating cavity is provided with a thermocouple in a penetrating mode, and the thermocouple extends into the upper heating cavity.

As a further improvement of the above technical solution: one end of the radiant tube, which is far away from the burner tip, is suspended in the hearth, and the thermocouple in the upper heating cavity is arranged at the opposite side of the radiant tube and points to the radiant tube.

As a further improvement of the technical scheme: and a thermocouple is arranged on the side wall of the lower heating cavity in a penetrating manner and extends into the lower heating cavity.

As a further improvement of the above technical solution: and thermocouples are arranged on the side wall of the upper end and the side wall of the lower end of the lower heating cavity, and the thermocouples at the lower end are arranged on the opposite side of the radiant tube and point to the radiant tube.

As a further improvement of the technical scheme: the burning bearing partition plate is a silicon carbide plate.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a gas sintering furnace body for manganese zinc ferrite carries out indirect heating to the product through the radiant tube combustor, can not exert an influence to the atmosphere in the furnace, avoids the disturbance of atmosphere in the furnace, has guaranteed the stability of atmosphere in the kiln to realized replacing electricity with gas, reached energy saving, adopt the radiant tube combustor, life is longer than electric heating components and parts, and the maintenance cost is lower, has reduced the cost of enterprise, is applicable to the sintering of manganese zinc ferrite. In addition, go up and carry out the separation through holding between the radiant tube combustor in the heating chamber and the product, prevent that the radiant tube from damaging on dropping the product of heating intracavity down with the piece, in addition, through the setting of last heating chamber, can separate outside air when changing the radiant tube, avoid the air directly to get into down the heating chamber, heat the product of intracavity under the oxidation.

Drawings

FIG. 1 is a sectional view of the gas sintering furnace of the present invention.

FIG. 2 is a side view of the gas sintering furnace of the present invention.

Fig. 3 is an end view of the gas sintering furnace body of the present invention.

The reference numerals in the figures denote:

1. a hearth; 11. an upper heating cavity; 12. a lower heating cavity; 2. a transfer mechanism; 3. firing the partition plate; 4. a radiant tube burner; 41. a burner tip; 42. a radiant tube; 43. a heat exchanger; 44. a gas inlet pipe; 45. an air inlet pipe; 46. a smoke exhaust pipe; 6. And a thermocouple.

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

As shown in fig. 1 to 3, the gas sintering furnace body for manganese zinc ferrite of the present embodiment includes a furnace 1 and a conveying mechanism 2, the furnace 1 is divided into an upper heating chamber 11 and a lower heating chamber 12 by a burning partition plate 3, the burning partition plate 3 has thermal conductivity, the conveying mechanism 2 is disposed in the lower heating chamber 12, the upper heating chamber 11 and the lower heating chamber 12 are both provided with radiant tube burners 4, the radiant tube burners 4 in the lower heating chamber 12 are disposed below the conveying mechanism 2, the sintered product is disposed on the conveying mechanism 2, and the radiant tube burners 4 located below can heat the sintered product above. The radiant tube burner 4 comprises a burner 41 and a radiant tube 42, the burner 41 is arranged on the side wall of the hearth 1 in a penetrating manner, one end of the radiant tube 42 is connected with the burner 41, and the other end of the radiant tube is suspended in the hearth 1.

Through the ignition burning after letting in combustion gas to nozzle 41, flame spouts into in the radiant tube 42, and the radiant tube 42 of top gives off the heat to in the heating chamber 11 to reach down heating chamber 12 with the heat through holding in the fever baffle 3, the radiant tube 42 heat of below gives off to in the heating chamber 12 simultaneously, promotes the temperature of furnace 1 and heats the sintering to the product. This gas sintering furnace body carries out indirect heating to the product through radiant tube combustor 4, can not exert an influence to the atmosphere in furnace 1, avoids the disturbance of atmosphere in furnace 1, has guaranteed the stability of atmosphere in the kiln to realized replacing electricity with gas, reached the energy saving, adopt radiant tube combustor 4, life is longer than electric heating components and parts, and the maintenance cost is lower, has reduced the cost of enterprise, is applicable to the sintering of manganese zinc ferrite.

Wherein, separate through holding burning baffle 3 between radiant tube combustor 4 in the upper heating chamber 11 and the product, prevent that radiant tube 42 from damaging on dropping the product of piece in the lower heating chamber 12, in addition, through the setting of upper heating chamber 11, can separate outside air when changing radiant tube 42, avoid the air directly to get into lower heating chamber 12, the product in the oxidation lower heating chamber 12.

In addition to this embodiment, the other end of the radiant tube 42 may be inserted into the side wall of the furnace 1 opposite to the furnace.

In this embodiment, the burning partition board 3 is a silicon carbide board, is made of silicon carbide, has a high heat conductivity coefficient, has a far infrared radiation effect, and can absorb heat more easily by a product, thereby increasing the energy-saving effect.

In this embodiment, the radiant tube burner 4 further comprises a heat exchanger 43, the heat exchanger 43 being located inside the radiant tube 42. The heat exchanger 43 can enhance the heat exchange. The radiant tube burner 4 is provided with a gas inlet pipe 44, an air inlet pipe 45 and a smoke exhaust pipe 46 which are respectively connected with the burner tip 41, and the gas inlet pipe 44, the air inlet pipe 45 and the smoke exhaust pipe 46 are all arranged outside the hearth 1. Gas and air respectively enter the burner 41 through the automatic proportion regulating valve, flame is sprayed into the heat exchanger in the radiation pipe 42 after ignition, after heat is exchanged through the hearth 1, flue gas reversely flows to the interface smoke exhaust pipe 46 of the burner 41 to be discharged out of the hearth 1, and then heating of one temperature zone of the kiln is completed.

In this embodiment, the radiant tube burners 4 in the upper heating chamber 11 and the lower heating chamber 12 are oppositely arranged, so that the radiant tube burners 4 are overlapped in the transverse direction of the hearth 1, and the heating in the hearth 1 is uniform.

In this embodiment, a thermocouple 6 is disposed on a side wall of the upper heating chamber 11, and the thermocouple 6 extends into the upper heating chamber 11. The thermocouple 6 in the upper heating chamber 11 is disposed at the opposite side of the radiant tube 42 and directed toward the radiant tube 42.

Similarly, a thermocouple 6 is arranged on the side wall of the lower heating cavity 12 in a penetrating manner, and the thermocouple 6 extends into the lower heating cavity 12. It should be noted that thermocouples 6 are arranged on the upper end side wall and the lower end side wall of the lower heating chamber 12, and the thermocouple 6 at the lower end is arranged at the opposite side of the radiant tube 42 and points to the radiant tube 42. The temperature in the hearth 1 is accurately detected by arranging the thermocouples 6 at the upper, middle and lower parts.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. A gas sintering furnace body for manganese zinc ferrite is characterized in that: including furnace (1) and transport mechanism (2), furnace (1) falls into heating chamber (11) and heating chamber (12) down through holding fever baffle (3), transport mechanism (2) are located in heating chamber (12) down, all be equipped with radiant tube combustor (4) in heating chamber (11) and the heating chamber (12) down, the below of transport mechanism (2) is located in radiant tube combustor (4) in heating chamber (12) down, radiant tube combustor (4) are including burner tip (41) and radiant tube (42), burner tip (41) are worn to establish on furnace (1) lateral wall, radiant tube (42) one end is connected with burner tip (41), and the other end is unsettled in furnace (1) or wears to establish on the lateral wall of furnace (1) opposite side.

2. The gas sintering furnace for manganese zinc ferrite of claim 1, characterized in that: the radiant tube burner (4) further comprises a heat exchanger (43), the heat exchanger (43) being located inside the radiant tube (42).

3. The gas sintering furnace for manganese zinc ferrite of claim 1, characterized in that: the radiant tube burner (4) in the upper heating cavity (11) is arranged opposite to the radiant tube burner (4) in the lower heating cavity (12).

4. The gas sintering furnace for manganese-zinc-ferrite according to any one of claims 1 to 3, characterized in that: the radiant tube combustor (4) is provided with a gas inlet pipe (44), an air inlet pipe (45) and a smoke exhaust pipe (46) which are respectively connected with a burner tip (41), and the gas inlet pipe (44), the air inlet pipe (45) and the smoke exhaust pipe (46) are all arranged on the outer side of the hearth (1).

5. The gas sintering furnace for manganese-zinc-ferrite according to any one of claims 1 to 3, characterized in that: the side wall of the upper heating cavity (11) is provided with a thermocouple (6) in a penetrating mode, and the thermocouple (6) extends into the upper heating cavity (11).

6. The gas sintering furnace for manganese-zinc-ferrite of claim 5, characterized in that: one end of the radiant tube (42) far away from the burner tip (41) is suspended in the hearth (1), and the thermocouple (6) in the upper heating cavity (11) is arranged at the opposite side of the radiant tube (42) and points to the radiant tube (42).

7. The gas sintering furnace for manganese-zinc-ferrite according to any one of claims 1 to 3, characterized in that: a thermocouple (6) penetrates through the side wall of the lower heating cavity (12), and the thermocouple (6) extends into the lower heating cavity (12).

8. The gas sintering furnace for manganese zinc ferrite of claim 7, characterized in that: thermocouples (6) are arranged on the side wall of the upper end and the side wall of the lower end of the lower heating cavity (12), and the thermocouples (6) of the lower end are arranged on the opposite side of the radiant tube (42) and point to the radiant tube (42).

9. The gas sintering furnace for manganese-zinc-ferrite according to any one of claims 1 to 3, characterized in that: the burning bearing partition plate (3) is a silicon carbide plate.