CN217403160U

CN217403160U - Degreasing furnace with air inlet preheating function

Info

Publication number: CN217403160U
Application number: CN202221213168.7U
Authority: CN
Inventors: 曹伟; 钱啸枫
Original assignee: Xinyang Zhongyi High Temperature Materials Co ltd
Current assignee: Xinyang Zhongyi High Temperature Materials Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-09
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a degreasing furnace with air inlet preheating function, which comprises a shell, wherein a supporting layer is arranged on the bottom plate of the shell, a first heat preservation layer and a second heat preservation layer are respectively arranged on the side wall and the top wall of the shell, and the supporting layer, the first heat preservation layer and the second heat preservation layer enclose a degreasing chamber positioned in the middle of the shell; a through hole is formed in the middle of the bottom of the supporting layer, a supporting plate covers the through hole, a heat insulation plate used for plugging the through hole is arranged at the bottom of the through hole, and a preheating chamber is formed among the heat insulation plate, the supporting plate and the fireproof supporting layer; a first heating body is arranged on the upper surface of the heat insulation plate; the bottom of the shell is provided with an air inlet pipe penetrating through the heat insulation plate, and the air inlet pipe extends into the preheating cavity; a plurality of communicating pipes are arranged in the supporting layer, one end of each communicating pipe is communicated with the preheating chamber, and the other end of each communicating pipe is communicated with the degreasing chamber; a heating element II is arranged on the surface of the heat-insulating layer I; and the second heat-insulating layer and the shell are provided with air outlet pipes in a penetrating manner, the lower ends of the air outlet pipes are communicated with the degreasing chamber, and the upper ends of the air outlet pipes are communicated with the outside of the shell.

Description

Degreasing furnace with inlet gas preheating function

Technical Field

The utility model relates to a heat treatment furnace technical field, concretely relates to degrease stove with preheat function admits air.

Background

The degreasing furnace is a heat treatment furnace that volatilizes or burns grease on the surface of a workpiece by a heating method to remove the grease. Present sintering degrease stove needs the inside organic flue gas of discharge furnace body in the degrease process, so need let in gas and exhaust in this time, but some products meet the cold air entering back, because the difference in temperature is too big can cause because the rapid cooling is sharp hot and leads to product fracture or deformation, the utility model provides a degrease stove with inlet preheating function to solve the inlet temperature and hang down the sintering quality hidden danger that leads to the fact excessively.

SUMMERY OF THE UTILITY MODEL

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

a degreasing furnace with an air inlet preheating function comprises a shell, wherein a fire-resistant supporting layer is arranged on a bottom plate of the shell, a first heat insulation layer and a second heat insulation layer are respectively arranged on a side wall and a top wall of the shell, and the fire-resistant supporting layer, the first heat insulation layer and the second heat insulation layer enclose a degreasing chamber located in the middle of the shell; a through hole is formed in the middle of the bottom of the fireproof support layer, a support plate covers the through hole, a heat insulation plate used for plugging the through hole is arranged at the bottom of the through hole, and a preheating chamber is formed among the heat insulation plate, the support plate and the fireproof support layer; a first heating body is arranged on the upper surface of the heat insulation plate; an air inlet pipe penetrating through the heat insulation plate is arranged at the bottom of the shell and extends into the preheating chamber; the preheating chamber is communicated with the degreasing chamber through a plurality of communicating pipes; a heating element II is arranged on the surface of the heat-insulating layer I; and the second heat insulation layer and the shell are provided with air outlet pipes in a penetrating manner, the lower ends of the air outlet pipes are communicated with the inside of the degreasing cavity, and the upper ends of the air outlet pipes are communicated with the outside of the shell.

Further, the refractory support layer is composed of multiple layers of light refractory bricks.

Furthermore, the communicating pipe penetrates through the fireproof supporting layer and is L-shaped; the horizontal section of the communicating pipe is communicated with the preheating chamber, and the vertical section of the communicating pipe is communicated with the degreasing chamber.

Furthermore, the first heating body is a plurality of electric heating wires embedded on the upper surface of the heat preservation plate; and the second heating bodies are a plurality of resistance band heating bodies fixed on the first heat-insulating layer through screws.

Further, the first heat insulation layer and the heat insulation board are both made of porous ceramic fiber materials; the first heat insulation layer is fixed on the inner wall of the shell through a stainless steel anchor.

Further, the heat-insulating layer II comprises a ceramic fiber module layer and a ceramic fiber blanket layer; wherein, a stainless steel supporting rod is arranged on the ceramic fiber module layer in a penetrating way, and two ends of the stainless steel supporting rod are connected with the side wall of the shell; and ceramic fiber fillers are filled between the ceramic fiber module layer and the shell.

Furthermore, an alumina fiber blanket layer is arranged on one surface of the first heat-insulating layer and one surface of the second heat-insulating layer, which are close to the degreasing chamber.

Furthermore, a protection tube is sleeved outside the air outlet tube and is made of alumina.

Furthermore, the supporting plate is made of corundum.

Furthermore, temperature thermocouples are arranged in the preheating chamber and the degreasing chamber; and the temperature thermocouple in the degreasing chamber is used for testing the gas temperature at the outlet of the gas inlet pipe, and the temperature measuring end of the temperature thermocouple is positioned above the gas inlet pipe.

The utility model has the advantages that: the utility model discloses be provided with and preheat the cavity, after gaseous entering preheats the cavity, the heat-generating body preheats in a pair of gaseous entering that preheats the cavity, and the gas after preheating gets into the degrease cavity through communicating pipe in, has consequently effectively avoided the lower gaseous direct entering degrease cavity of temperature in and causes the product to warp or the fracture. The utility model discloses a preheat the cavity setting in the casing, utilize heated board, backup pad to separate one in fire-resistant supporting layer and preheat the cavity, consequently this equipment does not lead to area and increase in cost because of the cavity is preheated in the increase.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

reference numerals: 1. a first heat insulation layer; 2. a refractory support layer; 3. a communicating pipe; 4. a resistance band heating element; 5. preheating a chamber; 6. a housing; 7. a support plate; 8. a heat-insulating board; 9. a temperature thermocouple; 10. protecting the tube; 11. an air inlet pipe; 12. a degreasing chamber; 13. a ceramic fiber module layer; 14. a ceramic fiber filler; 15. a ceramic fiber blanket layer; 16. a stainless steel support rod; 17. an alumina fiber blanket layer; 18. a stainless steel anchor; 19. an electric heating wire; 20. and an air outlet pipe.

Detailed Description

The technical solution of the present invention will be further described with reference to fig. 1 and the embodiment, so that those skilled in the art can more clearly understand the content of the technical solution.

The utility model discloses a degrease stove with inlet air preheats function, including casing 6, the casing adopts the Q235 material. A fire-resistant supporting layer 2 is arranged on a bottom plate of the shell 6, a first heat-insulating layer 1 and a second heat-insulating layer are respectively arranged on the side wall and the top wall of the shell 6, and the fire-resistant supporting layer 2, the first heat-insulating layer 1 and the second heat-insulating layer enclose a degreasing chamber 12 located in the middle of the shell 6.

The refractory support layer 2 is composed of multiple layers of light refractory bricks. The first heat-insulating layer 1 is made of porous ceramic fiber materials; the first insulating layer 1 is fixed on the inner wall of the shell 6 through stainless steel anchors 18. The second heat-insulating layer comprises a ceramic fiber module layer 13 and a ceramic fiber blanket layer 15; the ceramic fiber module layer 13 and the ceramic fiber blanket layer 15 are both made of aluminum silicate fibers, zirconium-containing aluminum silicate fibers, polycrystalline mullite fibers and the like, and the temperature resistance of the ceramic fiber module layer and the ceramic fiber blanket layer meets the requirement of maximum 1200 ℃ during the high-temperature high-temperature-pressure high-temperature-pressure high-temperature-pressure high-temperature high-pressure high.

Wherein, a stainless steel support rod 16 is arranged on the ceramic fiber module layer 13 in a penetrating way, and the stainless steel support rod 16 can select S304 or S310 material according to the temperature. The two ends of the stainless steel support rod 16 are connected with the side wall of the shell 6; ceramic fiber fillers 14 are filled between the ceramic fiber module layer 13 and the shell 6. And alumina fiber blanket layers 17 are arranged on one surfaces of the first heat-insulating layer and the second heat-insulating layer, which are close to the degreasing chamber 12. The alumina fiber blanket layer is arranged to improve the anti-slag falling performance in the degreasing chamber.

A through hole is formed in the middle of the bottom of the fireproof support layer 2, a support plate 7 covers the through hole, a heat insulation plate 8 used for plugging the through hole is arranged at the bottom of the through hole, and a preheating chamber 5 is formed among the heat insulation plate 8, the support plate 7 and the fireproof support layer 2; the supporting plate 7 is made of corundum. The heat insulation plate 8 is made of a porous ceramic fiber material, can be made of different raw materials according to different temperatures, is made of alumina silicate fibers, alumina silicate fibers containing zirconium, polycrystalline mullite fibers and the like, can resist temperature up to 1200 ℃, and has a density of 300kg/m for harvesting.

A first heating body is arranged on the upper surface of the heat insulation plate 8; an air inlet pipe 11 penetrating through the heat insulation plate 8 is arranged at the bottom of the shell 6, and the air inlet pipe 11 extends into the preheating chamber 5; a plurality of communicating pipes 3 are arranged in the fireproof supporting layer 2, the communicating pipes 3 are L-shaped, the horizontal section of the communicating pipes 3 is communicated with the preheating chamber 5, and the vertical section of the communicating pipes 3 is communicated with the degreasing chamber 12. The communication pipe 3 is formed in an L shape to increase the residence time of the air flow in the preheating chamber, thereby effectively preheating the air flow. A second heating element is arranged on the surface of the first heat-insulating layer 1; and the second heat-insulating layer and the shell 6 are provided with an air outlet pipe 20 in a penetrating manner, the lower end of the air outlet pipe 20 is communicated with the inside of the degreasing chamber 12, and the upper end of the air outlet pipe is communicated with the outside of the shell 6. The first heating element is a plurality of electric heating wires 19 embedded on the upper surface of the heat preservation plate 8; the second heating bodies are a plurality of resistance band heating bodies 4 fixed on the first heat-insulating layer 1 through 95 ceramic screws.

The outer portion of the outlet pipe 20 is sleeved with a protection pipe 10, and the protection pipe 10 is made of alumina.

Temperature thermocouples 9 are arranged in the preheating chamber 5 and the degreasing chamber 12; and the temperature thermocouple 9 in the degreasing chamber 12 is used for testing the gas temperature at the outlet of the gas inlet pipe 11, and the temperature measuring end of the temperature thermocouple is positioned above the gas inlet pipe 11.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a degrease stove with inlet air preheats function which characterized in that: the degreasing device comprises a shell (6), wherein a fire-resistant supporting layer (2) is arranged on a bottom plate of the shell (6), a first heat-insulating layer (1) and a second heat-insulating layer are respectively arranged on the side wall and the top wall of the shell (6), and the fire-resistant supporting layer (2), the first heat-insulating layer (1) and the second heat-insulating layer enclose a degreasing chamber (12) located in the middle of the shell (6); a through hole is formed in the middle of the bottom of the fireproof supporting layer (2), a supporting plate (7) covers the through hole, a heat insulation plate (8) used for plugging the through hole is arranged at the bottom of the through hole, and a preheating chamber (5) is formed among the heat insulation plate (8), the supporting plate (7) and the fireproof supporting layer (2); a first heating body is arranged on the upper surface of the heat insulation plate (8); an air inlet pipe (11) penetrating through the heat insulation plate (8) is arranged at the bottom of the shell (6), and the air inlet pipe (11) extends into the preheating chamber (5); the preheating chamber (5) is communicated with the degreasing chamber (12) through a plurality of communicating pipes (3); a second heating element is arranged on the surface of the first heat-insulating layer (1); and the second heat-insulating layer and the shell (6) are provided with an air outlet pipe (20) in a penetrating manner, the lower end of the air outlet pipe (20) is communicated with the inside of the degreasing chamber (12), and the upper end of the air outlet pipe is communicated with the outside of the shell (6).

2. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: the refractory support layer (2) is composed of multiple layers of light refractory bricks.

3. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: the communicating pipe (3) penetrates through the fireproof supporting layer (2) and is L-shaped; the horizontal section of the communicating pipe (3) is communicated with the preheating chamber (5), and the vertical section of the communicating pipe (3) is communicated with the degreasing chamber (12).

4. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: the first heating body is a plurality of electric heating wires (19) embedded on the upper surface of the heat-insulating plate (8); the second heating elements are a plurality of resistance band heating elements (4) fixed on the first heat-insulating layer (1) through screws.

5. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: the first heat-insulation layer (1) and the heat-insulation plate (8) are both made of porous ceramic fiber materials; the first heat-insulating layer (1) is fixed on the inner wall of the shell (6) through a stainless steel anchor (18).

6. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: the second heat-insulating layer comprises a ceramic fiber module layer (13) and a ceramic fiber blanket layer (15); wherein a stainless steel support rod (16) penetrates through the ceramic fiber module layer (13), and two ends of the stainless steel support rod (16) are connected with the side wall of the shell (6); ceramic fiber filler (14) is filled between the ceramic fiber module layer (13) and the shell (6).

7. The degreasing furnace with the function of preheating the inlet gas as claimed in claim 1, wherein: and alumina fiber blanket layers (17) are arranged on one surfaces of the first heat-insulating layer and the second heat-insulating layer, which are close to the degreasing chamber (12).

8. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: a protective tube (10) is sleeved outside the air outlet tube (20), and the protective tube (10) is made of alumina.

9. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: the supporting plate (7) is made of corundum.

10. The degreasing furnace with the function of preheating the inlet air as claimed in claim 1, wherein: temperature thermocouples (9) are arranged in the preheating chamber (5) and the degreasing chamber (12); and a temperature thermocouple (9) in the degreasing chamber (12) is used for testing the gas temperature at the outlet of the gas inlet pipe (11), and the temperature measuring end of the temperature thermocouple is positioned above the gas inlet pipe (11).