Protective gas furnace with sufficient combustion

Abstract

The utility model relates to the technical field of stainless steel hollow pipe production, and discloses a protective gas furnace with sufficient combustion, which comprises a furnace body, a hot air pipe is arranged around the outer side of the furnace body, a plurality of adapter pipes are communicated on the hot air pipe, a plurality of tuyeres are uniformly arranged at the bosh of the furnace body along the circumferential direction, and the adapter pipes are correspondingly connected with the tuyeres. According to the device, the problems that the air flow at the inner wall of the furnace body is small, and combustion is insufficient are solved, the blowing direction of hot air is continuously changed through the movable air scattering mechanism, convection in the furnace body is enhanced, and the combustion effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel hollow pipe production, and more specifically, to a protective gas furnace with sufficient combustion. Background Art

[0002] Carbon is one of the important elements that affect the performance of stainless steel. An appropriate amount of carbon can enhance the hardness and strength of stainless steel, improve its wear resistance and cutting performance. However, excessive carbon will make stainless steel brittle and reduce its corrosion resistance and weldability. Therefore, it is necessary to control the range of carbon content in the production of stainless steel hollow tubes. Ensuring the full combustion of coal gas and coke during the smelting process is an important means to control the carbon content.

[0003] The Chinese invention patent with application number 202311279463.1 discloses a low-carbon blast furnace and a reducing gas injection method thereof, in which reducing gas is injected from the furnace belly to ensure the reduction height. At the same time, the process parameters of the tuyere are optimized to increase the diameter of the vortex zone, so that the reducing gas generated in the vortex zone flows to the middle of the blast furnace, expanding the volume of the vortex zone, thereby improving the combustion efficiency. However, the tuyere is arranged on the furnace wall, and the hot air flows of each tuyere interact with each other to produce vortexes and pass upward through the activated coke zone. The air flow rate at the furnace wall without tuyere is limited, which can easily cause incomplete combustion and affect the quality of the finished product. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a protective gas furnace with sufficient combustion.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A protective gas furnace with sufficient combustion comprises a furnace body, a hot air pipe is arranged around the outer side of the furnace body, a plurality of transfer pipes are connected to the hot air pipe, a plurality of air ports are evenly opened along the circumferential direction at the belly of the furnace body, a plurality of the transfer pipes are correspondingly connected to the air ports, and a wind dispersion mechanism is installed on the side of the air ports facing the furnace body.

[0007] The utility model is further configured as follows: the wind dissipation mechanism includes a plurality of wind guide plates 2, and the plurality of wind guide plates 2 are arranged at intervals in the vertical direction; the wind guide plates 2 are connected with a rotating shaft on one side in the air outlet; the rotating shaft is rotatably connected to the furnace body; a slide groove is provided on the plate surface of the wind guide plates 2, and the slide groove is arranged along the direction toward the center of the furnace body; a push rod is slidably connected to the furnace body, and the push rod passes through all the slide grooves and extends to the outside of the furnace body; a plurality of end columns are provided on the push rod, and the end columns are slidably connected to the slide groove.

[0008] The utility model is further configured as follows: a driving mechanism is connected to one end of the push rod outside the furnace body, the driving mechanism includes a motor, a turntable is connected to the output shaft of the motor, the axis of the turntable and the axis of the push rod are perpendicular to each other and in the same plane, the edge of the turntable is rotatably connected to a transfer rod, and the other end of the transfer rod is rotatably connected to the push rod.

[0009] The utility model is further configured as follows: an end of the transfer tube away from the hot air tube is configured as an inner shrinkage opening, the inner shrinkage opening is sealed and connected to the air outlet, a flange is provided on the transfer tube, and the flange is connected to the furnace body.

[0010] The utility model is further configured as follows: the wind dispersing mechanism includes a plurality of wind guide plates, the wind guide plates are fixed in the air outlet, and the height of the wind guide plates facing the furnace body is not lower than the height of the same wind guide plates facing away from the furnace body.

[0011] The advantages of the utility model are:

[0012] A wind dispersion mechanism is installed at one end of the tuyere in the furnace body, and a plurality of wind guide plates 2 of the wind dispersion mechanism are arranged in a vertical direction, and are rotatably connected to the furnace body through a rotating shaft at one end in the tuyere. A push rod is connected to the plate surface of the wind guide plate 2, which extends out of the furnace body and is connected to the driving mechanism. The driving mechanism pushes the push rod to perform reciprocating motion, and the push rod drives the wind guide plate 2 to fan around the rotating shaft through the end column, so that the hot air is regularly dispersed along the circumference of the furnace body, thereby strengthening the convection in the furnace body, expanding the volume of the vortex zone, and enhancing the combustion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0014] Figure 2 For along Figure 1 The AA line section is shown;

[0015] Figure 3 For along Figure 1 The BB line cross section is shown;

[0016] Figure 4 for Figure 2 An enlarged view of part D is shown;

[0017] Figure 5 for Figure 3 An enlarged view of part E is shown;

[0018] Figure 6 for Figure 1 An enlarged view of section C is shown;

[0019] In the figure: 1. furnace body; 2. hot air pipe; 3. adapter tube; 31. flange; 32. inner shrinkage; 4. wind dispersion mechanism; 41. air guide plate 1; 42. air guide plate 2; 421. slide groove; 43. rotating shaft; 44. push rod; 441. end column; 5. driving mechanism; 51. motor; 52. turntable; 53. adapter rod. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0022] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0023] See also Figure 1-6 , the utility model provides the following technical solutions:

[0024] A protective gas furnace with sufficient combustion comprises a furnace body 1. A hot air pipe 2 is arranged around the outer side of the furnace body 1. The air inlet of the hot air pipe 2 is connected to an external hot air blower. A plurality of adapter pipes 3 are connected to the hot air pipe 2. Hot air is blown into the furnace body 1 through the adapter pipes 3. A plurality of air ports are evenly opened along the circumferential direction at the belly of the furnace body 1. The plurality of adapter pipes 3 are correspondingly connected to the air ports. An air dispersion mechanism 4 is installed on the side of the air port facing the furnace body 1. The air dispersion mechanism 4 can change the direction of the hot air entering the furnace body 1 from the air port. The hot air from all the air ports swings regularly along the circumferential direction of the furnace body 1, thereby enhancing the convection in the furnace body 1, expanding the volume of the whirlpool zone, and enhancing the combustion effect.

[0025] The wind dissipation mechanism 4 includes a plurality of wind guide plates 42, which are arranged at intervals in the vertical direction. A rotating shaft 43 is connected to one side of the wind guide plate 42 in the air outlet. The rotating shaft 43 is rotatably connected to the furnace body 1. The wind guide plate 42 can swing around the rotating shaft 43, thereby changing the wind direction of the hot air after passing through the wind guide plate 42. A slide groove 421 is provided on the plate surface of the wind guide plate 42, and the slide groove 421 is arranged along the direction toward the center of the furnace body 1. A push rod 44 is slidably connected to the furnace body 1. The push rod 44 passes through all the slide grooves 421 and extends to the outside of the furnace body 1. A plurality of end columns 441 are arranged on the push rod 44, and the end columns 441 are slidably connected to the slide grooves 421. When the push rod 44 is pushed and pulled, the end columns 441 slide in the slide grooves 421, thereby driving the wind guide plate 42 to swing around the rotating shaft 43.

[0026] One end of the push rod 44 outside the furnace body is connected to a driving mechanism 5, and the driving mechanism 5 includes a motor 51. A turntable 52 is connected to the output shaft of the motor 51. The axis of the turntable 52 and the axis of the push rod 44 are perpendicular to each other and in the same plane. The edge of the turntable 52 is rotatably connected to a transfer rod 53, and the other end of the transfer rod 53 is rotatably connected to the push rod 44. The driving mechanism 5 is configured as a crank slider mechanism. When the motor 51 rotates, the turntable 52 rotates synchronously, and the turntable 52 drives the transfer rod 53 to move, thereby driving the push rod 44 to reciprocate along its own axial direction, and finally realizing the repeated fanning of the air guide plate 42.

[0027] One end of the adapter tube 3 facing away from the hot air pipe 2 is set as an inner contraction 32, and the inner contraction 32 is sealed with the air outlet. A flange 31 is set on the adapter tube 3, and the flange 31 is connected to the furnace body 1. The sealing performance of the interface is enhanced by the inner contraction 32, and at the same time the flow area is reduced, the initial wind speed of the hot air entering the furnace body 1 is increased, and convection is strengthened.

[0028] The wind dissipation mechanism 4 includes a plurality of wind guide plates 41, which are fixed in the air outlet. The height of the wind guide plates 41 facing the furnace body 1 is not lower than the height of the same wind guide plates 41 away from the furnace body 1. The hot air entering the furnace body 1 flows in a horizontal or inclined upward direction after passing through the wind guide plates 41, thereby improving the hot air circulation efficiency.

[0029] Specifically, a wind dispersing mechanism 4 is installed at one end of the tuyere in the furnace body 1, and a plurality of wind guide plates 42 of the wind dispersing mechanism 4 are arranged in a vertical direction, and are rotatably connected to the furnace body 1 through a rotating shaft 43 at one end in the tuyere, and a push rod 44 is connected to the plate surface of the wind guide plate 42, and the push rod 44 extends out of the furnace body 1 and is connected to the driving mechanism 5. The motor 51 of the driving mechanism 5 drives the turntable 52 to rotate, and the turntable 52 drives the push rod 44 to reciprocate along the axial direction of the push rod 44 through the transfer rod 53, and the push rod 44 drives the wind guide plate 42 to fan around the rotating shaft 43 through the end column 441, so that the hot air is regularly distributed along the circumference of the furnace body 1, thereby strengthening the convection in the furnace body 1, expanding the volume of the vortex zone, and enhancing the combustion effect.

[0030] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar opposites, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0033] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protective gas furnace with sufficient combustion, comprising a furnace body (1), characterized in that: A hot air pipe (2) is arranged around the outer side of the furnace body (1), and a plurality of transfer pipes (3) are connected to the hot air pipe (2). A plurality of air ports are evenly arranged along the circumference of the furnace belly of the furnace body (1), and a plurality of the transfer pipes (3) are connected to the air ports accordingly. A wind dispersion mechanism (4) is installed on the side of the air ports facing the furnace body (1).

2. A protective gas furnace with sufficient combustion according to claim 1, characterized in that: The wind dissipation mechanism (4) comprises a plurality of wind guide plates (42), wherein the plurality of wind guide plates (42) are arranged at intervals in the vertical direction, wherein one side of the wind guide plates (42) in the air outlet is connected with a rotating shaft (43), wherein the rotating shaft (43) is rotatably connected with the furnace body (1), and a slide groove (421) is provided on the plate surface of the wind guide plates (42), wherein the slide groove (421) is arranged along a direction toward the center of the furnace body (1), and a push rod (44) is slidably connected to the furnace body (1), wherein the push rod (44) passes through all the slide grooves (421) and extends to the outside of the furnace body (1), and wherein a plurality of end columns (441) are provided on the push rod (44), wherein the end columns (441) are slidably connected with the slide groove (421).

3. A protective gas furnace with sufficient combustion according to claim 2, characterized in that: The push rod (44) is connected to a driving mechanism (5) at one end outside the furnace body, and the driving mechanism (5) includes a motor (51). A turntable (52) is connected to the output shaft of the motor (51). The axis of the turntable (52) and the axis of the push rod (44) are perpendicular to each other and are in the same plane. The edge of the turntable (52) is rotatably connected to a transfer rod (53), and the other end of the transfer rod (53) is rotatably connected to the push rod (44).

4. A protective gas furnace with sufficient combustion according to claim 1, characterized in that: One end of the transfer tube (3) facing away from the hot air tube (2) is provided with an inner contraction (32), and the inner contraction (32) is sealedly connected to the air outlet. A flange (31) is provided on the transfer tube (3), and the flange (31) is connected to the furnace body (1).

5. The protective gas furnace with sufficient combustion according to claim 1, characterized in that: The wind dissipation mechanism (4) comprises a plurality of wind guide plates (41), wherein the wind guide plates (41) are fixed in the air outlet, and the height of the wind guide plates (41) facing the furnace body (1) is not lower than the height of the same wind guide plates (41) facing away from the furnace body (1).

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