Furnace flue sealing mechanism

Abstract

The utility model relates to the field of kilns, and discloses a kiln flue sealing mechanism which comprises a steel flue, a heat preservation ceramic module is arranged in the steel flue, an aluminum foil plate is arranged between the heat preservation ceramic module and the steel flue, and a conveying pipe is fixedly communicated with the rear side of the outer wall of the steel flue. According to the utility model, the originally adopted refractory brick structure is upgraded and reformed into the steel flue, all welding beads of the steel flue are fully welded, the leakproofness is ensured, the lined aluminum foil plate and the heat-insulating ceramic module play an effective heat-insulating role, the surface temperature loss is reduced, the waste heat of the furnace kiln is fully reused, the production cost is reduced, and the energy-saving and environment-friendly effects are realized. And the gas consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of furnaces, in particular to a closed mechanism for a furnace flue. Background Technique

[0002] A furnace is a type of kiln, which can be divided into a flame kiln and an electric heating kiln according to the heat source. According to the condition of the heat source facing the green body, it can be divided into an open flame kiln, a muffle kiln and a semi-muffle kiln. The flue of the round tube galvanizing furnace is a structure built with heat-insulating refractory bricks, and the outer layer of part of the flue in the furnace pit is secondarily enclosed with iron plates.

[0003] At present, most of the furnace flues are made of refractory bricks, with poor airtightness and heat preservation effect, serious heat source loss, and cold air will enter, affecting the stability of the internal temperature and negative pressure of the furnace. Therefore, there are the following disadvantages: it is necessary to use a hot blast stove or a steam heating furnace for supplementation, resulting in high natural gas consumption and high production costs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a closed mechanism for a furnace flue to solve the problem of high natural gas consumption and high production costs caused by the need to use a hot blast stove or a steam heating furnace for supplementation.

[0005] To achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions: a closed mechanism for a furnace flue, including a steel flue, a heat-insulating ceramic module is arranged inside the steel flue, an aluminum foil board is arranged between the heat-insulating ceramic module and the steel flue, and a conveying pipe is fixedly connected and communicated with the rear side of the outer wall of the steel flue.

[0006] Preferably, the thickness of the heat-insulating ceramic module is 300 mm.

[0007] Preferably, an installation hole is opened on the top surface of the conveying pipe, an installation plate is detachably arranged on the top surface of the conveying pipe, a fixing hole is opened on the top surface of the installation plate, a temperature sensor is fixed inside the fixing hole, and the temperature sensor is slidably inserted into the installation hole.

[0008] Preferably, two threaded grooves are opened on the top surface of the conveying pipe, two threaded holes are opened on the top surface of the installation plate, bolts are respectively threadedly connected inside the two threaded holes, and the threaded ends of the two bolts are respectively threadedly connected with the inside of the two threaded grooves.

[0009] Preferably, two positioning grooves are opened on the right side of the installation plate, two positioning columns are fixed on the top surface of the conveying pipe, and the two positioning columns respectively position the two positioning grooves.

[0010] Preferably, a sealing gasket is fixed on the bottom surface of the installation plate.

[0011] Compared with the prior art, a closed mechanism for a furnace flue adopting the above technical solution has the following beneficial effects:

[0012] First, during use, the original refractory brick structure is upgraded and transformed into a steel flue. All welds of the steel flue are fully welded to ensure airtightness. The inner lining of aluminum foil board and thermal insulation ceramic module play an effective role in heat preservation, reducing surface temperature loss, enabling full reuse of the waste heat of the furnace, reducing production costs, and reducing gas consumption.

[0013] Second, during use, by increasing the thickness of the thermal insulation ceramic module to 300 mm, its heat insulation effect can be significantly improved, and the stability of the internal temperature of the furnace can be better maintained. Through the temperature sensor, it is conducive to real-time detection of the temperature change of the flue gas inside the conveying pipe, which is beneficial to better control and adjust the working state of the furnace.

[0014] Third, during use, bolts facilitate the disassembly and assembly of the mounting plate and temperature sensor by the staff, thus facilitating the maintenance or replacement of the mounting plate and temperature sensor by the staff. Through the positioning groove and positioning post, it is conducive to the staff to perform auxiliary positioning during the installation of the mounting plate, facilitating the alignment of the threaded hole with the threaded groove, preventing inaccuracy or deviation during installation, and thus improving the convenience of installing the mounting plate. Through the sealing gasket, it is conducive to sealing between the mounting plate and the conveying pipe, preventing flue gas from leaking from the mounting hole, and thus improving the sealing performance between the mounting plate and the conveying pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the embodiment.

[0016] Figure 2 It is an exploded schematic diagram of the embodiment.

[0017] Figure 3 It is a sectional schematic diagram of the steel flue in the embodiment.

[0018] Figure 4 It is an exploded schematic diagram of the conveying pipe and the mounting plate in the embodiment.

[0019] In the figure: 1, steel flue; 2, thermal insulation ceramic module; 3, aluminum foil board; 4, conveying pipe; 5, mounting hole; 6, mounting plate; 7, fixing hole; 8, temperature sensor; 9, threaded groove; 10, threaded hole; 11, bolt; 12, positioning groove; 13, positioning post; 14, sealing gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will describe in detail the preferred embodiments of the present invention with reference to the accompanying drawings.

[0021] Such as Figures 1 - 4As shown in the figure, a closed mechanism for a furnace flue includes a steel flue 1. Inside the steel flue 1, there is a heat-insulating ceramic module 2. Between the heat-insulating ceramic module 2 and the steel flue 1, there is an aluminum foil board 3. At the rear side of the outer wall of the steel flue 1, a conveying pipe 4 is connected and fixed.

[0022] During use, the staff first connects the conveying pipe 4 to the waste heat evaporator, upgrades and transforms the original refractory brick structure into the steel flue 1, and fully welds all the weld seams of the steel flue 1 to ensure airtightness. The inner-lined aluminum foil board 3 and the heat-insulating ceramic module 2 play an effective heat-insulating role, reducing the loss of surface temperature, enabling the waste heat of the furnace to be fully reused, reducing production costs, and reducing gas consumption.

[0023] As Figures 1 - 3 shown, the thickness of the heat-insulating ceramic module 2 is 300 mm.

[0024] During use, by increasing the thickness of the heat-insulating ceramic module 2 to 300 mm, its heat-insulating effect can be significantly improved, and the stability of the temperature inside the furnace can be better maintained.

[0025] As Figure 1 、 Figure 2 and Figure 4 shown, an installation hole 5 is opened on the top surface of the conveying pipe 4. An installation plate 6 is detachably arranged on the top surface of the conveying pipe 4. A fixing hole 7 is opened on the top surface of the installation plate 6. Inside the fixing hole 7, a temperature sensor 8 is fixed. The temperature sensor 8 is slidably inserted into the installation hole 5. Two threaded grooves 9 are opened on the top surface of the conveying pipe 4. Two threaded holes 10 are opened on the top surface of the installation plate 6. Two bolts 11 are respectively threadedly connected inside the two threaded holes 10. The threaded ends of the two bolts 11 are respectively threadedly connected to the inside of the two threaded grooves 9.

[0026] During use, through the temperature sensor 8, it is beneficial to detect the temperature change of the flue gas inside the conveying pipe 4 in real time, which is conducive to better controlling and adjusting the working state of the furnace. Through the bolts 11, it is beneficial for the staff to disassemble and assemble the installation plate 6 and the temperature sensor 8, so as to facilitate the staff to maintain or replace the installation plate 6 and the temperature sensor 8.

[0027] As Figure 1 、 Figure 2 and Figure 4 shown, two positioning grooves 12 are opened on the right side of the installation plate 6. Two positioning columns 13 are fixed on the top surface of the conveying pipe 4. The two positioning columns 13 respectively position the two positioning grooves 12. A sealing gasket 14 is fixed on the bottom surface of the installation plate 6.

[0028] In use, the positioning groove 12 and the positioning post 13 facilitate the auxiliary positioning of the staff during the installation of the mounting plate 6, making it easy to align the threaded hole 10 with the threaded groove 9, preventing inaccuracy or deviation during installation, and thus improving the convenience of installing the mounting plate 6. The sealing gasket 14 facilitates the sealing between the mounting plate 6 and the conveying pipe 4, and can prevent the leakage of flue gas from the mounting hole 5, thereby improving the sealing performance between the mounting plate 6 and the conveying pipe 4.

[0029] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, making equivalent replacements or changes, should be covered within the protection scope of the present invention.

Claims

1. A furnace flue sealing mechanism, comprising a steel flue (1), characterized in that: A thermal insulation ceramic module (2) is provided inside the steel flue (1), an aluminum foil plate (3) is provided between the thermal insulation ceramic module (2) and the steel flue (1), and a delivery pipe (4) is connected and fixed to the rear side of the outer wall of the steel flue (1).

2. A furnace flue sealing mechanism according to claim 1, characterized in that: The thickness of the thermal insulation ceramic module (2) is 300 mm.

3. A furnace flue sealing mechanism according to claim 2, characterized in that: The top surface of the delivery pipe (4) is provided with a mounting hole (5), the top surface of the delivery pipe (4) is detachably provided with a mounting plate (6), the top surface of the mounting plate (6) is provided with a fixing hole (7), a temperature sensor (8) is fixed inside the fixing hole (7), and the temperature sensor (8) is slidably inserted into the mounting hole (5).

4. A furnace flue sealing mechanism according to claim 3, characterized in that: The top surface of the delivery pipe (4) is provided with two threaded grooves (9), and the top surface of the mounting plate (6) is provided with two threaded holes (10). Bolts (11) are respectively threadedly connected in the two threaded holes (10), and the threaded ends of the two bolts (11) are respectively threadedly connected to the inner threads of the two threaded grooves (9).

5. The furnace flue sealing mechanism according to claim 3, characterized in that: Two positioning grooves (12) are provided on the right side of the mounting plate (6), and two positioning columns (13) are fixed on the top surface of the delivery pipe (4), wherein the two positioning columns (13) respectively position the two positioning grooves (12).

6. A furnace flue sealing mechanism according to claim 3, characterized in that: A sealing gasket (14) is fixed to the bottom surface of the mounting plate (6).

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