Efficient energy-saving annealing furnace for stainless steel pipe

Abstract

The utility model provides an efficient energy-saving annealing furnace for a stainless steel pipe, which comprises a workbench, a conveying mechanism, a sealing shell, a preheating cavity, a heating cavity, a heat preservation cavity, a steel pipe heating furnace, a fan and an air pump, and the conveying mechanism and the sealing shell are fixed on the upper side surface of the workbench; a preheating cavity, a heating cavity and a heat preservation cavity are formed in the sealing shell, and a steel pipe heating furnace is arranged in the heating cavity. The input end of the air pump communicates with the interior of the heat preservation cavity through an air conveying pipe, and the output end of the air pump communicates with the interior of the preheating cavity through an air conveying pipe. An air inlet is formed in the portion, on the lower side of the heat preservation cavity, of the workbench in a penetrating mode, and a fan is fixed into the air inlet. Through the arrangement of the air pump, preheating of the stainless steel pipe can be recycled, then the stainless steel pipe is preheated through preheating, heat shock caused by the fact that the stainless steel pipe directly enters a high-temperature area is reduced, and through the arrangement of the conveying mechanism, the stainless steel pipe can be prevented from rolling.

Description

Technical Field

[0001] This utility model belongs to the technical field of stainless steel pipe production equipment, and in particular relates to a high-efficiency and energy-saving annealing furnace for stainless steel pipes. Background Technology

[0002] Stainless steel pipes, with their excellent corrosion resistance and good mechanical properties, play an indispensable role in many fields such as industry, construction, and automobile manufacturing. Their performance and quality directly affect the reliability, durability, and safety of the final product. Annealing, as a core process in the stainless steel pipe production process, plays a crucial role in optimizing the internal structure of the material, eliminating residual stress, and improving mechanical properties.

[0003] Currently, most mainstream stainless steel pipe annealing equipment on the market adopts box-type or continuous annealing furnace design. These devices are usually divided into heating zone, heat preservation zone and cooling zone. By precisely controlling the temperature of different zones, the stainless steel pipe can be heated, heat preserved and cooled to meet the requirements of the annealing process.

[0004] However, the stainless steel pipe annealing equipment currently on the market has the following problems in actual use:

[0005] First, annealing equipment on the market wastes a lot of energy during the heating and holding processes, especially the residual heat in the holding zone is not effectively utilized. Second, annealing equipment on the market directly heats stainless steel pipes at high temperatures without an effective preheating process. This sudden temperature change causes a significant thermal shock to the stainless steel pipes, affecting their material properties and annealing effect, and may even lead to defects such as cracks or deformation. In addition, annealing equipment on the market lacks a limiting mechanism for the stainless steel pipes, which can cause the stainless steel pipes to roll during movement, resulting in collisions.

[0006] Therefore, it is essential to invent a high-efficiency and energy-saving annealing furnace for stainless steel pipes. Utility Model Content

[0007] The purpose of this invention is to provide a high-efficiency and energy-saving annealing furnace for stainless steel pipes, thereby solving the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model relates to a high-efficiency and energy-saving annealing furnace for stainless steel pipes, comprising a workbench, a conveying mechanism, a sealing shell, a preheating chamber, a heating chamber, a heat preservation chamber, a steel pipe heating furnace, a fan, and an air pump. The conveying mechanism and the sealing shell are fixed to the upper side of the workbench, with the sealing shell positioned outside a portion of the conveying mechanism. The sealing shell contains the preheating chamber, heating chamber, and heat preservation chamber, all of which are interconnected. The heating chamber contains a series of steel pipe heating furnaces arranged in a straight line, each fixed to the workbench with bolts, and each furnace contains an electromagnetic heating mechanism. An air pump is fixed to the upper side of the sealing shell with bolts, its input end connected to the heat preservation chamber via a gas supply pipe, and its output end connected to the preheating chamber via a gas supply pipe. An air inlet is provided through the workbench below the heat preservation chamber, with a fan fixed to the inside of the inlet with bolts.

[0010] Furthermore, the conveying mechanism includes a first motor, a drive shaft, and conveying rollers. The base of the first motor is fixed to the worktable by bolts, and the output end of the worktable is fixed with a drive shaft, wherein the drive shaft is rotatably connected to the worktable through a support bearing. The outer side of the drive shaft is connected to several conveying rollers by bevel gear meshing, wherein the conveying rollers are rotatably connected to the worktable through a support bearing, and some of the conveying rollers are provided with a sealed shell inside. This arrangement enables the stainless steel pipe to move.

[0011] Furthermore, the conveying roller includes a roller body, a rotating column, a second motor, and limiting plates. Both outer sides of the roller body are rotatably connected to the worktable via support bearings, and one end of the roller body is connected to the transmission shaft via a bevel gear. The rotating column is rotatably mounted inside the roller body via support bearings, and one end of the rotating column is fixed to the output end of the second motor, which is fixed inside the roller body by bolts. Two limiting plates are mounted on the outer side of the rotating column via two external threads with opposite directions. The limiting plates are slidably connected to the roller body, and the outermost edge of each limiting plate has a groove adapted to the stainless steel tube. This arrangement can prevent the stainless steel tube from rolling when it is moved.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, through the installation of a fan and an air pump, allows the air pump to extract high-temperature gas from inside the insulation cavity and transport it to the preheating cavity to preheat the stainless steel pipe. This design makes full use of the residual heat inside the insulation cavity, reduces energy waste, and reduces the thermal shock of directly entering the high-temperature zone. Secondly, the introduction of the fan accelerates the air exchange inside and outside the insulation cavity, allowing external cold air to quickly enter the insulation cavity, which helps to cool the stainless steel pipe quickly. This design shortens the cooling time and further improves production efficiency.

[0014] 2. The conveying mechanism of this utility model can prevent the stainless steel pipe from rolling when it is moved by the limiting plate. Secondly, according to the diameter of the stainless steel pipe, the second motor drives the rotating column to rotate accordingly, so that the distance between the limiting plates is adapted to the stainless steel pipe. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the conveying mechanism of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the conveyor roller of this utility model.

[0020] Figure 5 This is a structural schematic diagram of the rotating column and limiting plate of this utility model.

[0021] In the picture:

[0022] 1-Workbench, 2-Conveying mechanism, 21-First motor, 22-Drive shaft, 23-Conveying roller, 231-Roller body, 232-Rotating column, 233-Second motor, 234-Limiting plate, 3-Sealing shell, 4-Preheating chamber, 5-Heating chamber, 6-Insulation chamber, 7-Steel pipe heating furnace, 8-Fan, 9-Air pump. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Please see Figures 1 to 5 As shown, this utility model is a high-efficiency and energy-saving annealing furnace for stainless steel pipes, including a workbench 1, a conveying mechanism 2, a sealing shell 3, a preheating chamber 4, a heating chamber 5, a heat preservation chamber 6, a steel pipe heating furnace 7, a fan 8, and an air pump 9. The conveying mechanism 2 and the sealing shell 3 are fixed on the upper side of the workbench 1, with the sealing shell 3 located on the outer side of part of the conveying mechanism 2. The preheating chamber 4, the heating chamber 5, and the heat preservation chamber 6 are respectively opened inside the sealing shell 3, and the preheating chamber 4, the heating chamber 5, and the heat preservation chamber 6 are all interconnected. The heating chamber 5... Inside, there are several steel pipe heating furnaces 7 arranged in a straight line. Each steel pipe heating furnace 7 is fixed to the workbench 1 by bolts, and each steel pipe heating furnace 7 has an electromagnetic heating mechanism fixed inside. An air pump 9 is fixed to the upper side of the sealing shell 3 by bolts. The input end of the air pump 9 is connected to the inside of the heat preservation cavity 6 through an air supply pipe, and the output end of the air pump 9 is connected to the inside of the preheating cavity 4 through an air supply pipe. An air inlet is opened through the workbench 1 on the lower side of the heat preservation cavity 6, and a fan 8 is fixed inside the air inlet by bolts.

[0026] Specifically, the conveying mechanism 2 includes a first motor 21, a drive shaft 22, and conveying rollers 23. The base of the first motor 21 is fixed to the workbench 1 by bolts, and the output end of the workbench 1 is fixed with the drive shaft 22, wherein the drive shaft 22 is rotatably connected to the workbench 1 through a support bearing. Several conveying rollers 23 are connected to the outer side of the drive shaft 22 through bevel gear meshing, wherein the conveying rollers 23 are rotatably connected to the workbench 1 through the support bearing, and some of the conveying rollers 23 are provided inside the sealing shell 3. When in use, the first motor 21 can drive the conveying rollers 23 to rotate through the drive shaft 22, and then drive the stainless steel pipe to move through the rotation of the conveying rollers 23.

[0027] Specifically, the conveying roller 23 includes a roller body 231, a rotating column 232, a second motor 233, and a limiting plate 234. Both outer surfaces of the roller body 231 are rotatably connected to the worktable 1 via support bearings, and one end of the roller body 231 is connected to the transmission shaft 22 via a bevel gear. The rotating column 232 is rotatably mounted inside the roller body 231 via support bearings, with one end of the rotating column 232 fixed to the output end of the second motor 233, which is bolted to the inside of the roller body 231. Two limiting plates 234 are installed on the outer side through two external threads with opposite directions. The limiting plates 234 are slidably connected to the roller body 231, and the outermost edge of the limiting plates 234 is provided with grooves that are adapted to the stainless steel tube. During use, the limiting plates 234 can prevent the stainless steel tube from rolling when it is moved. Secondly, according to the diameter of the stainless steel tube, the second motor 233 can drive the rotating column 232 to rotate accordingly, so that the distance between the limiting plates 234 is adapted to the stainless steel tube.

[0028] Please see Figure 1-5 As shown, this utility model is a high-efficiency and energy-saving annealing furnace for stainless steel pipes. Its working principle is as follows: During use, the stainless steel pipe passes through the preheating chamber 4, heating chamber 5, and insulation chamber 6 via the conveying mechanism 2. When the stainless steel pipe is in the preheating chamber 4, it can be preheated by the hot air recovered inside the insulation chamber 6 under the action of the air pump 9, reducing the thermal shock of directly entering the high-temperature zone. When the stainless steel pipe is in the heating chamber 5, the electromagnetic heating mechanism inside the steel pipe heating furnace 7 heats the stainless steel pipe efficiently. Then, when the stainless steel pipe is in the insulation chamber 6, the fan 8 promotes the air circulation inside the insulation chamber 6 to cool the stainless steel pipe. The air pump 9 sends the hot air back to the preheating chamber 4, realizing the recycling of heat.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency energy-saving annealing furnace for stainless steel pipes, comprising a workbench (1), a conveying mechanism (2), a sealed shell (3), a preheating chamber (4), a heating chamber (5), a heat preservation chamber (6), a steel pipe heating furnace (7), a fan (8) and an air pump (9), characterized in that: The upper side of the workbench (1) is fixed with conveying mechanism (2) and sealed shell (3), wherein sealed shell (3) is arranged outside part conveying mechanism (2); The inside of the sealed shell (3) is respectively provided with preheating cavity (4), heating cavity (5) and heat preservation cavity (6), wherein preheating cavity (4), heating cavity (5) and heat preservation cavity (6) are all communicated; The inside of the heating cavity (5) is linear array with several steel tube heating furnace (7), wherein steel tube heating furnace (7) is fixed with workbench (1), and the inside of steel tube heating furnace (7) is fixed with electromagnetic heating mechanism; The upper side of the sealed shell (3) is fixed with air pump (9), wherein the input end of air pump (9) is communicated with the inside of heat preservation cavity (6) through gas pipe, and the output end of air pump (9) is communicated with the inside of preheating cavity (4) through gas pipe; The workbench (1) of the lower side of the heat preservation cavity (6) is provided with air inlet, wherein the inside of the air inlet is fixed with fan (8) by bolt.

2. The high-efficiency energy-saving annealing furnace for stainless steel pipes according to claim 1, characterized in that: The conveying mechanism (2) comprises a first motor (21), a transmission shaft (22) and a conveying roller (23), the base of the first motor (21) is fixed with the workbench (1) by bolt, and the output end of the workbench (1) is fixed with the transmission shaft (22), wherein the transmission shaft (22) is rotatably connected with the workbench (1) through the support bearing; The outer side of the transmission shaft (22) is connected with a plurality of conveying rollers (23) through bevel gears, wherein the conveying roller (23) is rotatably connected with the workbench (1), and part of the conveying roller (23) is arranged in the sealed shell (3).

3. The high-efficiency energy-saving annealing furnace for stainless steel pipes according to claim 2, characterized in that: The conveying roller (23) comprises a roller body (231), a rotating column (232), a second motor (233) and a limiting plate (234), the outer side of both ends of the roller body (231) is rotatably connected with the workbench (1) through the support bearing, and one end of the roller body (231) is connected with the transmission shaft (22) through the bevel gear; The inside of the roller body (231) is rotatably installed with a rotating column (232), wherein one end of the rotating column (232) is fixed with the output end of the second motor (233), and the second motor (233) is fixed in the roller body (231); The outer side of the rotating column (232) is installed with two limiting plates (234) through two sections of external threads with opposite rotation directions, wherein The limiting plate (234) is slidably connected with the roller body (231), and the outermost edge of the limiting plate (234) is provided with a groove adapted to the stainless steel pipe.

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