Monomer bell-type furnace for premixed natural gas oriented silicon steel

Abstract

The premixed natural gas oriented silicon steel single bell-type furnace comprises a supporting frame and a furnace body arranged on the supporting frame, a heat exchange box is arranged on the furnace body, a gas inlet pipe is arranged on one side of the heat exchange box, a preheating pipe is arranged on the other side of the heat exchange box, and the gas inlet pipe is communicated with the preheating pipe through a bent pipe. A gas pipe is arranged at the lower end of the preheating pipe, a plurality of gas branches are arranged on the gas pipe and inserted into the preheating pipe in a penetrating mode, a plurality of cover plates are hinged to the outer side faces of the gas branches, driving assemblies used for driving the cover plates to be opened and closed are arranged in the gas branches, power assemblies are connected to the driving assemblies, and guide plates are arranged in the preheating pipe. Fuel gas is preheated and mixed with air in the preheating pipe through opening and closing of the cover plate; the original heat treatment mode is changed, electric energy heating is converted into fuel gas heating, and mixed gas of air and fuel gas is preheated, so that the energy consumption is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment of metal materials, in particular to a premixed natural gas oriented silicon steel single body bell furnace. Background Art

[0002] In recent years, with the increasing market demand for oriented silicon steel, the bell-type furnace for producing oriented silicon steel has been continuously improved. At present, the heating method of the single bell-type furnace for oriented silicon steel used in the market has been changed from electric heating to gas heating, which can save its power resources and energy consumption.

[0003] In a Chinese invention patent with publication number CN105018715A, a comparative document of a horizontal bell-type furnace is proposed, which specifically proposes "including a fixed outer cover, one end of which is closed and the other end is open, and the opening direction is horizontal, the two ends of the steel coil support sleeve are open, and the inner ring forms a material cavity for accommodating the steel coil; a translation mechanism is used to move the steel coil support sleeve horizontally to the outside of the furnace for loading and unloading or to the furnace; an air inlet and an exhaust port are used to adjust the atmosphere in the furnace or cool the furnace; a heating mechanism is provided on the end of the fixed outer cover and / or the movable end cover close to the corresponding end face of the steel coil support sleeve."

[0004] In a Chinese invention patent with publication number CN117501060A, a comparative document of a method for heating a furnace is proposed, which specifically proposes "comprising an inner chamber and an outer chamber. Process gas is introduced into the inner chamber. Fuel and oxidant are burned to generate combustion gases in the combustion chamber. The combustion gases pass through the outer chamber and are recycled to the combustion chamber. The process gas is preheated by indirect heat exchange with the combustion gases."

[0005] The above-mentioned comparative documents also have the following defects: the device described in comparative document 1 requires a resistance belt to generate heat to heat-treat the material during use. Heating by electric energy not only consumes a large amount of electricity, but also has a long heating storage time, which wastes manpower and material resources; the heat in comparative document 2 is burned in the combustion chamber and then transported to the inner chamber through a pipeline, which will reduce the thermal energy to a certain extent and cause resource loss; for this reason, we proposed a gas-fired high-temperature single-body bell-type furnace for oriented silicon steel. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies of the prior art. The present invention provides a heat exchange box on the furnace body, the upper end of the heat exchange box is communicated with the hot gas pipe, the other end of the hot gas pipe is communicated with the furnace body, the lower end of the heat exchange box is provided with an exhaust pipe, one side of the heat exchange box is provided with an air intake pipe, the other side of the heat exchange box is provided with a preheating pipe, the air intake pipe and the preheating pipe are communicated through a bent pipe, the lower end of the preheating pipe is provided with a gas pipe, the gas pipe is provided with a plurality of gas branches inserted inside the preheating pipe, a plurality of cover plates are hinged on the outer side of the gas branch, a driving assembly for driving the cover plate to open and close is provided inside the gas branch, and a drive assembly is connected to the driving assembly. There is a power component, and a guide plate is arranged inside the preheating tube. The gas is opened and closed through the cover plate to be preheated and mixed with the air in the preheating tube. The present invention changes the original heat treatment method from electric energy heating to gas heating, thereby reducing the loss of resources and achieving energy saving. A preheating box is added in the process of exhaust gas discharge outside the furnace body to preheat the air in the preheating tube to achieve the purpose of temperature increase, shorten the preheating time and improve work efficiency. A gas pipe is inserted into the preheating box, and with the cooperation of the driving component and the power component, the gas can be mixed with the air more evenly, so that the gas burns more fully.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A premixed natural gas oriented silicon steel single bell-type furnace, comprising a support frame and a furnace body arranged on the support frame, a heat exchange box is arranged on the furnace body, an upper end of the heat exchange box is communicated with a hot gas pipe, the other end of the hot gas pipe is communicated with the furnace body, an exhaust pipe is arranged at the lower end of the heat exchange box, an air intake pipe is arranged on one side of the heat exchange box, a preheating pipe is arranged on the other side of the heat exchange box, the air intake pipe and the preheating pipe are communicated with each other through a bent pipe, a gas pipe is arranged at the lower end of the preheating pipe, a plurality of gas branches are arranged on the gas pipe and are inserted into the preheating pipe, a plurality of cover plates are hinged on the outer side surface of the gas branch, a driving assembly for driving the cover plate to open and close is arranged inside the gas branch, a power assembly is connected to the driving assembly, a guide plate is arranged inside the preheating pipe, and the gas is preheated and mixed with the air in the preheating pipe through the opening and closing of the cover plate.

[0009] Preferably, the power assembly includes a fixed frame fixed in the gas branch, a fan blade rotatably arranged on the fixed frame, a support rod fixedly arranged on the front end surface of the fan blade, an annular frame fixed in the gas branch, a rectangular block arranged at one end of the annular frame, a rectangular groove arranged at the other end of the annular frame, a rotating rod rotatably arranged on the rectangular block, a column arranged at the end of the rotating rod, and an arc rod arranged in the rectangular groove.

[0010] As a preference, a corresponding arc-shaped groove is provided in the middle of the arc-shaped rod, and the column is slidably arranged in the arc-shaped groove.

[0011] Preferably, the driving assembly comprises an articulated seat a arranged on the inner side of the cover plate, an articulated seat b symmetrically arranged at the rear end of the arc-shaped rod, and an articulated rod arranged between the articulated seat a and the articulated seat b.

[0012] Preferably, the gas branch comprises a passage a arranged on the gas pipe in a vertical direction and a passage b arranged at the center of the preheating tube and communicating with the passage a.

[0013] Preferably, a combustion aid is provided on one side of the gas branch, and a branch pipe communicating with a preheating pipe is provided at an upper end of the combustion aid.

[0014] As a preference, the guide plates are concentratedly distributed on the peripheral side of the passage b, and the guide plates are all inclined toward the rear end of the passage b.

[0015] As another preferred embodiment, the cover plates are hinged on the outside of passage b, and the opening direction of the cover plates is opposite to the direction of the air in the preheating tube.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention changes the original heat treatment method from electric energy heating to gas heating, thereby reducing the loss of resources and achieving the purpose of energy saving.

[0018] 2. The present invention discharges the heat energy generated by combustion in the furnace into the preheating box through the hot air pipe, and heats the air in the preheating pipe, thereby shortening the preheating time and improving its working efficiency.

[0019] 3. The present invention inserts the gas pipeline into the preheating tube, and through the cooperation of the power component and the drive component, mixes the gas with the air in proportion, and through the setting of the guide plate, the air and the gas are brought closer to the outer wall of the gas branch, driving them to mix more evenly and making the gas burn more fully. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the axonometric structure of a premixed natural gas oriented silicon steel single bell-type furnace.

[0022] Figure 2 This is a schematic diagram of the front view of a premixed natural gas oriented silicon steel single bell-type furnace.

[0023] Figure 3 A schematic diagram of the structure of the drive component.

[0024] Figure 4 This is a schematic diagram of the structure of the power component.

[0025] Figure 5 This is a schematic diagram of the structure of the gas branch.

[0026] Figure 6 This is a working state diagram of a premixed natural gas oriented silicon steel single bell furnace.

[0027] Figure 7 This is a working state diagram of a premixed natural gas oriented silicon steel single bell furnace.

[0028] In the figure: 1-support frame; 2-furnace body; 3-heat exchange box; 4-hot gas pipe; 5-exhaust pipe; 6-intake pipe; 7-preheating pipe; 8-bending pipe; 9-gas pipe; 10-gas branch; 11-cover plate; 12-drive assembly; 13-power assembly; 14-guide plate; 15-combustion aid; 71-branch pipe; 101-passage a; 102-passage b; 121-hinge seat a; 122-hinge seat b; 123-hinge rod; 131-fixed frame; 132-fan blades; 133-support rod; 134-ring frame; 135-rectangular block; 136-rectangular groove; 137-rotating rod; 138-column; 139-arc rod; 1391-arc groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1

[0031] Reference Figure 1-7A premixed natural gas oriented silicon steel single bell-type furnace, comprising a support frame 1 and a furnace body 2 arranged on the support frame 1, a heat exchange box 3 is arranged on the furnace body 2, the upper end of the heat exchange box 3 is communicated with a hot gas pipe 4, the other end of the hot gas pipe 4 is communicated with the furnace body 2, the lower end of the heat exchange box 3 is provided with an exhaust pipe 5, one side of the heat exchange box 3 is provided with an air intake pipe 6, the other side of the heat exchange box 3 is provided with a preheating pipe 7, the air intake pipe 6 and the preheating pipe 7 are communicated through a bending pipe 8, A gas pipe 9 is provided at the lower end of the preheating tube 7. The gas pipe 9 is provided with a plurality of gas branches 10 which are inserted into the preheating tube 7. A plurality of cover plates 11 are hinged on the outer surface of the gas branch 10. A driving assembly 12 for driving the cover plate to open and close is provided inside the gas branch 10. A power assembly 13 is connected to the driving assembly 12. A guide plate 14 is provided inside the preheating tube 7. The gas is preheated and mixed with the air in the preheating tube 7 through the opening and closing of the cover plate 11.

[0032] Reference Figure 3-4 The power assembly 13 includes a fixed frame 131 fixedly arranged in the gas branch 10, a fan blade 132 rotatably arranged on the fixed frame 131, a support rod 133 fixedly arranged on the front end surface of the fan blade 132, an annular frame 134 fixedly arranged in the gas branch 10, a rectangular block 135 arranged at one end of the annular frame 134, a rectangular groove 136 arranged at the other end of the annular frame 134, a rotating rod 137 rotatably arranged on the rectangular block 135, a column 138 arranged at the end of the rotating rod 137, and an arc rod 139 arranged in the rectangular groove 136.

[0033] Reference Figure 3-4 A corresponding arc groove 1391 is provided in the middle of the arc rod 139 , and the column 138 is slidably disposed in the arc groove 1391 .

[0034] It is worth mentioning here that the circulation of air in the preheating tube 7 drives the fan blades 132 to rotate, thereby providing power for the subsequent driving assembly 12.

[0035] Reference Figure 3 The driving assembly 12 includes an articulated seat a121 arranged on the inner side of the cover plate 11, an articulated seat b122 symmetrically arranged at the rear end of the arc rod 139, and an articulated rod 123 arranged between the articulated seat a121 and the articulated seat b122.

[0036] In this embodiment, the driving assembly 12 is driven by the power assembly 13 to work, pushing the cover plates 11 on both sides to open the doors alternately.

[0037] Reference Figure 5The gas branch 10 includes a passage a101 vertically arranged on the gas pipe 9 and a passage b102 arranged at the center of the preheating tube 7 and communicating with the passage a101.

[0038] It is worth mentioning that the gas pipe 9 is introduced into the air pipe for mixing in proportion, so that the mixing is more uniform.

[0039] Reference Figure 2 A combustion aid 15 is provided on one side of the gas branch 10 , and a branch pipe 71 communicating with the preheating pipe 7 is provided at the upper end of the combustion aid 15 .

[0040] In this embodiment, the uniformly mixed gas is delivered to the branch pipe 71, and an automatic ignition device is provided inside the combustion aid 15, so that the gas can be fully burned in the furnace body.

[0041] Reference Figure 5 The guide plates 14 are concentrated on the peripheral side of the passage b102, and the guide plates 14 are all inclined toward the rear end of the passage b102.

[0042] It is worth mentioning here that the gas overflows forward through the outlet of the cover 11 at an angle. After the cover 11 is closed, the air in the preheating tube 7 pushes the gas to move backward. Through the inclined setting of the guide plate 14, the air and gas are concentrated along the side of the passage b102 and move backward, so that the air and gas can be better mixed.

[0043] Reference Figure 5 The cover plates 11 are hinged on the outside of the passage b102 , and the opening direction of the cover plates 11 is opposite to the direction of the air in the preheating tube 7 .

[0044] In this embodiment, the other end of the passage b102 is closed, and the gas is continuously transported into the passage b102. The gas pressure in the passage b102 is greater than the gas pressure in the preheating tube 7, and the gas can be smoothly filled into the preheating tube 7.

[0045] The working process is as follows

[0046] The heat energy generated after combustion in the furnace body 2 is charged into the heat exchange box 3 through the hot gas pipe 4, and then passed into the ground through the exhaust pipe 5 for subsequent treatment;

[0047] The air inlet pipe 6 inputs air into the bent pipe 8, and the bent pipe 8 preheats the air in the heat exchange box 3, and then transports it to the preheating pipe 7; the gas in the gas branch 10 enters the passage b102 through the passage a101, and the gas flowing inside drives the fan blade 132 to rotate, and then drives the rotating rod 137 to rotate, and the column 138 on the rotating rod 137 drives the arc rod 139 to move left and right, and then drives the hinged rod 123 hinged at the tail end of the arc rod 139 to extend and retract left and right in the gas branch 10, driving the cover plates 11 on both sides to open and close;

[0048] The gas in the gas branch 10 is discharged into the preheating tube 7 by the pressure difference. After the cover plate 11 is closed, the air in the preheating tube 7 pushes the gas to move backward. The guide plate 14 guides the air and gas to the left and right, and the air and gas are concentrated along the periphery of the passage b102 and move backward and mix.

[0049] The mixed gas is discharged into the combustion aid 15 through the branch pipe 71 , and the automatic ignition device in the combustion aid 15 can fully burn the fuel gas in the furnace body 2 .

[0050] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A premixed natural gas oriented silicon steel single bell-type furnace, comprising a support frame (1) and a furnace body (2) arranged on the support frame (1), characterized in that: A heat exchange box (3) is provided on the furnace body (2); the upper end of the heat exchange box (3) is in communication with a hot air pipe (4); the other end of the hot air pipe (4) is in communication with the furnace body (2); the lower end of the heat exchange box (3) is provided with an exhaust pipe (5); one side of the heat exchange box (3) is provided with an air intake pipe (6); the other side of the heat exchange box (3) is provided with a preheating pipe (7); the air intake pipe (6) and the preheating pipe (7) are in communication with each other via a bent pipe (8); the lower end of the preheating pipe (7) is provided with a gas pipe (9). The gas pipe (9) is provided with a plurality of gas branches (10) which are inserted into the preheating tube (7); a plurality of cover plates (11) are hingedly connected to the outer surface of the gas branch (10); a driving assembly (12) for driving the cover plates to open and close is provided inside the gas branch (10); a power assembly (13) is connected to the driving assembly (12); a guide plate (14) is provided inside the preheating tube (7); the gas is preheated and mixed with the air in the preheating tube (7) by opening and closing the cover plates (11).

2. The premixed natural gas oriented silicon steel single bell-type furnace according to claim 1, characterized in that: The power assembly (13) comprises a fixed frame (131) fixedly arranged in the gas branch (10), a fan blade (132) rotatably arranged on the fixed frame (131), a support rod (133) fixedly arranged on the front end surface of the fan blade (132), an annular frame (134) fixedly arranged in the gas branch (10), a rectangular block (135) arranged at one end of the annular frame (134), a rectangular groove (136) arranged at the other end of the annular frame (134), a rotating rod (137) rotatably arranged on the rectangular block (135), a column (138) arranged at the end of the rotating rod (137), and an arc rod (139) arranged in the rectangular groove (136).

3. The premixed natural gas oriented silicon steel single bell-type furnace according to claim 2, characterized in that: A corresponding arc-shaped groove (1391) is arranged in the middle of the arc-shaped rod (139), and the upright column (138) is slidably arranged in the arc-shaped groove (1391).

4. The premixed natural gas oriented silicon steel single bell-type furnace according to claim 1, characterized in that: The driving assembly (12) comprises an articulated seat a (121) arranged on the inner side of the cover plate (11), an articulated seat b (122) symmetrically arranged at the rear end of the arc-shaped rod (139), and an articulated rod (123) arranged between the articulated seat a (121) and the articulated seat b (122).

5. The premixed natural gas oriented silicon steel single bell-type furnace according to claim 1, characterized in that: The gas branch (10) comprises a passage a (101) arranged on the gas pipe (9) in the vertical direction, and a passage b (102) arranged at the center of the preheating pipe (7) and communicating with the passage a (101).

6. The premixed natural gas oriented silicon steel single bell-type furnace according to claim 1, characterized in that: A combustion aid (15) is provided on one side of the gas branch line (10), and a branch pipe (71) communicating with the preheating pipe (7) is provided at the upper end of the combustion aid (15).

7. The premixed natural gas oriented silicon steel single bell-type furnace according to claim 1, characterized in that: The guide plates (14) are concentratedly distributed on the peripheral side of the passage b (102), and the guide plates (14) are all inclined toward the rear end of the passage b (102).

8. The premixed natural gas oriented silicon steel single bell-type furnace according to claim 1, characterized in that: The cover plates (11) are hinged on the outside of the passage b (102), and the opening direction of the cover plates (11) is opposite to the direction of the air flow in the preheating tube (7).

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