Stainless steel tube annealing furnace with antioxidant coating

Abstract

This utility model discloses a stainless steel tube annealing furnace with an anti-oxidation coating, including a furnace body. Openings are provided on both the front and rear sides near the bottom of the furnace body. The furnace body has an inner cavity with a movably extending support box at the bottom of the inner cavity. An opening is movably extending through the front of the support box. A partition is fixedly connected to the inner cavity of the support box, and a fixing plate is fixedly connected to the front side of the support box near the bottom. This stainless steel tube annealing furnace with an anti-oxidation coating, through the setting of a first movable cover plate and a second movable cover plate, allows the outer part of the support box to be covered in time when the support box is moved, preventing heat from the furnace body from flowing out through the partition from the front of the support box, thus avoiding high-temperature burns and preventing heat loss and resource waste.

Description

Technical Field

[0001] This utility model relates to the field of annealing furnace technology, and in particular to a stainless steel tube annealing furnace with an anti-oxidation coating. Background Technology

[0002] Stainless steel pipe is a hollow, long, round steel material, widely used in industrial pipelines for petroleum, chemical, medical, food, light industry, and machinery, as well as in mechanical structural components. Annealing of steel pipes involves heating the steel to a certain temperature and holding it at that temperature for a period of time, then allowing it to cool slowly. Annealing is a heat treatment method that involves heating the steel pipe to a temperature that causes a phase transformation or partial phase transformation, holding it at that temperature, and then slowly cooling it. The purpose of annealing is to eliminate structural defects, improve the microstructure, homogenize the composition, refine the grains, improve the mechanical properties of the steel, and reduce residual stress.

[0003] For example, Chinese Patent No. CN215440599U discloses an adjustable high-efficiency steel pipe annealing furnace, including a stable base. A first bolt is detachably installed on one side of the top of the stable base, and an adjustment device is fixedly installed on the other side of the top of the stable base. The annealing furnace body is detachably installed on the top of the adjustment device. A first collecting pipe is connected to the bottom of the annealing furnace body. A first connecting flange is connected to one side of the first collecting pipe. A filter screen is detachably installed on one side inside the first collecting pipe. A second connecting flange is connected to the right side of the first collecting pipe through the first connecting flange, and a second bolt is detachably installed on one side of the second connecting flange. In the above solution, the annealing furnace utilizes the cooperation between the lifting rod and the lifting plate to ensure the adaptability of the device. This avoids the problem that if the annealing furnace itself does not have a height adjustment function, it will be unable to work once the annealing furnace needs to be raised to a certain height, thus reducing the working efficiency of the device.

[0004] However, the aforementioned adjustable high-efficiency steel pipe annealing furnace cannot operate when placing pipes into it. It can only operate after the operator has placed the stainless steel pipes. Similarly, it cannot operate when removing stainless steel pipes from the furnace. The operator must remove the stainless steel pipes from the furnace and then place new ones in before it can operate again. As a result, the process of removing and placing stainless steel pipes not only consumes a lot of time but also causes heat loss inside the furnace. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a stainless steel tube annealing furnace with an anti-oxidation coating.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] An annealing furnace for stainless steel tubes with an anti-oxidation coating includes a furnace body. Openings are provided on both the front and rear sides near the bottom of the furnace body. A cavity is provided inside the furnace body, and a support box is movably inserted through the bottom of the cavity. An opening is movably inserted through the front side of the support box. A partition is fixedly connected to the inner cavity of the support box. A fixing plate is fixedly connected to the front side of the support box near the bottom. A groove is provided at the bottom of the furnace body, and a second hydraulic rod is fixedly connected to the inner cavity of the groove. The front end of the second hydraulic rod is fixedly connected to the fixing plate. A first movable cover plate and a second movable cover plate are movably connected to the front and rear sides of the furnace body, respectively.

[0008] Furthermore, the outer side of the furnace body is provided with an anti-oxidation coating, the right side of the furnace body is provided with a controller, the inner cavity of the cavity is provided with a horizontal plate, the top of the horizontal plate is fixedly connected with a connecting frame, the top of the connecting frame is fixedly connected with a first hydraulic rod, the first hydraulic rod is fixedly connected to the top of the inner cavity of the cavity, and the bottom of the horizontal plate is fixedly installed with a number of water spray heads and gas flame heads in an array.

[0009] Furthermore, both the first and second movable cover plates are provided with two hinges at their tops. The first and second movable cover plates are movably connected to the furnace body via the hinges, and both the first and second movable cover plates are matched with the opening.

[0010] Furthermore, the top of the furnace body is provided with two movable frames, which are respectively close to the front and rear sides of the furnace body. The inner cavity of each movable frame is provided with a limiting frame, which is fixedly connected to the top of the furnace body. Each of the two movable frames is fixedly connected with a baffle on the side that is far apart from each other. The baffle is matched with the first movable cover plate and the second movable cover plate respectively.

[0011] Furthermore, the top of the horizontal plate is provided with a first connecting pipe and a second connecting pipe. The first connecting pipe is connected to several water spray heads, and the second connecting pipe is connected to several gas burner heads. The top of the first connecting pipe and the second connecting pipe are respectively fixedly inserted with a water inlet pipe and an air inlet pipe. The top of the water inlet pipe and the air inlet pipe movably penetrates the top of the cavity. An exhaust pipe is fixedly inserted into the top of the furnace body near the rear side.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model provides a stainless steel tube annealing furnace with an anti-oxidation coating, which avoids the trouble of repeatedly opening and closing the door, and also avoids the trouble of waiting for operators to take out and put in stainless steel, making the whole furnace more efficient and flexible.

[0014] 2. This utility model discloses a stainless steel tube annealing furnace with an anti-oxidation coating. The device, through the setting of a first movable cover plate and a second movable cover plate, allows the first movable cover plate and the second movable cover plate to cover the outer part of the carrier box in time when the carrier box is moved, so as to prevent the heat inside the furnace body from passing through the partition and flowing out from the front side of the carrier box, thereby avoiding high temperature burns and also avoiding heat loss and resource waste. Attached Figure Description

[0015] Figure 1 This is a frontal perspective view of the present invention;

[0016] Figure 2 This is a bottom-view perspective view of the present invention;

[0017] Figure 3 This is a rear-view perspective view of the present invention;

[0018] Figure 4 This is a front perspective view of the opening of the component of this utility model;

[0019] Figure 5 This is a front perspective view of the groove in the component of this utility model;

[0020] Figure 6 This is a frontal sectional perspective view of the furnace body of this utility model component;

[0021] Figure 7 This is a front perspective view of the horizontal plate of the component of this utility model;

[0022] Figure 8 This is a rear perspective view of the horizontal plate of the component of this utility model;

[0023] Figure 9 This is a bottom perspective view of the horizontal plate of the component of this utility model;

[0024] Figure 10 This is a front perspective view of the baffle plate of this utility model;

[0025] Figure 11 This is a front perspective view of the component carrier box of this utility model;

[0026] Figure 12 This is a bottom perspective view of the component carrier box of this utility model.

[0027] The following are the labels in the diagram: 1. Furnace body; 2. Controller; 3. Opening; 4. Cavity; 5. Horizontal plate; 6. Connecting frame; 7. First hydraulic rod; 8. Water spray head; 9. Gas burner head; 10. First connecting pipe; 11. Water inlet pipe; 12. Second connecting pipe; 13. Air inlet pipe; 14. Exhaust pipe; 15. Carrier box; 16. Partition plate; 17. Fixing plate; 18. Second hydraulic rod; 19. Groove; 20. First movable cover plate; 21. Second movable cover plate; 22. Hinge; 23. Limiting frame; 24. Movable frame; 25. Baffle. Detailed Implementation

[0028] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-12 This utility model provides a technical solution: a stainless steel tube annealing furnace with an anti-oxidation coating, comprising a furnace body 1, with openings 3 on both the front and rear sides near the bottom of the furnace body 1, an anti-oxidation coating on the outer side of the furnace body 1, a controller 2 on the right side of the furnace body 1, a horizontal plate 5 in the inner cavity of a cavity 4, a connecting frame 6 fixedly connected to the top of the horizontal plate 5, a first hydraulic rod 7 fixedly connected to the top of the connecting frame 6, the first hydraulic rod 7 fixedly connected to the top of the inner cavity of the cavity 4, and the bottom of the horizontal plate 5 arranged in an array. Several water spray heads 8 and gas burner heads 9 are fixedly installed. The top of the horizontal plate 5 is provided with a first connecting pipe 10 and a second connecting pipe 12. The first connecting pipe 10 is connected to several water spray heads 8, and the second connecting pipe 12 is connected to several gas burner heads 9. The top of the first connecting pipe 10 and the second connecting pipe 12 are respectively fixedly inserted with a water inlet pipe 11 and an air inlet pipe 13. The top of the water inlet pipe 11 and the air inlet pipe 13 can move through the top of the cavity 4. The top of the furnace body 1 is fixedly inserted with an exhaust pipe 14 near the rear side.

[0030] The furnace body 1 has an inner cavity 4, through which a support box 15 is movably connected. An opening 3 is movably connected to the front of the support box 15. A partition 16 is fixedly connected to the inner cavity of the support box 15. A fixing plate 17 is fixedly connected to the front of the support box 15 near its bottom. A groove 19 is formed at the bottom of the furnace body 1. A second hydraulic rod 18 is fixedly connected to the inner cavity of the groove 19. The front end of the second hydraulic rod 18 is fixedly connected to the fixing plate 17. A first movable cover plate 20 and a second movable cover plate 21 are movably connected to the front and rear sides of the furnace body 1, respectively. The tops of the first movable cover plate 20 and the second movable cover plate 21 are... Two hinges 22 are provided. The first movable cover plate 20 and the second movable cover plate 21 are movably connected to the furnace body 1 through the hinges 22. The first movable cover plate 20 and the second movable cover plate 21 are matched with the opening 3. The top of the furnace body 1 is provided with two movable frames 24. The two movable frames 24 are respectively close to the front and rear sides of the furnace body 1. The inner cavity of the movable frame 24 is movably connected with a limiting frame 23. The limiting frame 23 is fixedly connected to the top of the furnace body 1. The two movable frames 24 are fixedly connected with baffles 25 on the side that is far away from each other. The baffles 25 are matched with the first movable cover plate 20 and the second movable cover plate 21 respectively.

[0031] Working Principle: This utility model discloses an annealing furnace for stainless steel tubes with an anti-oxidation coating. During use, when annealing the stainless steel tubes, the front movable frame 24 is first moved horizontally to the right. The movable frame 24 moves the baffle 25. The movable frame 24 moves to the outer edge of the limiting frame 23. When the movable frame 24 moves to the right side of the limiting frame 23, the first movable cover 20 is flipped upward. The first movable cover 20 flips upward with the hinge 22 as the center. The first movable cover 20 flips until it is in contact with the front side of the furnace body 1. Then, the front movable frame 24 is moved to the left. The movable frame 24 moves the baffle 25 to the front side of the first movable cover 20, thereby fixing the first movable cover 20. At this time, the front part of the inner cavity of the bearing box 15 is opened. Then, the stainless steel tube is placed in the front side of the inner cavity of the bearing box 15, that is, in front of the partition 16. After the stainless steel tube is placed, the front movable frame 24 is moved, and the baffle 25 is moved away from the first movable cover 20. A movable cover plate 20 is used to release the fixation of the first movable cover plate 20. Then, the first movable cover plate 20 is flipped downwards, covering the front part of the top of the carrier box 15. Then, the carrier box 15 with stainless steel pipe is driven to move to the right rear side and enter the cavity 4 through the second hydraulic rod 18. When the front part of the inner cavity of the carrier box 15 moves into the cavity 4, the first movable cover plate 20 naturally flips down under the action of gravity, blocking the front opening 3. The rear side of the carrier box 15 pushes up the second movable cover plate 21, and the second movable cover plate 21 flips upwards, covering the rear part of the top of the carrier box 15. The setting of the second movable cover plate 21 prevents the heat inside the furnace body 1 from flowing out from the rear side of the carrier box 15 through the partition 16 when the carrier box 15 moves to the right into the cavity 4, thereby avoiding high temperature burns and preventing heat loss and resource waste.

[0032] Once the chamber containing the stainless steel tube enters the cavity 4, the stainless steel tube can be annealed and heated by the gas burner head 9.

[0033] At this point, the rear part of the inner cavity of the carrier box 15 is located outside the furnace body 1. Then, the second movable cover plate 21 is flipped upwards, and the second movable cover plate 21 is fixed by moving the rear baffle 25. Then, a stainless steel tube is installed in the rear part of the inner cavity of the carrier box 15, and the second movable cover plate 21 is closed. After the furnace body 1 has finished annealing the stainless steel in the front part of the inner cavity of the carrier box 15, the carrier box 15 is driven to move forward by the second hydraulic rod 18. When the rear part of the inner cavity of the carrier box 15 moves into the cavity 4, the second movable cover plate 21 is closed. Under the action of gravity, plate 21 naturally flips down, the second movable cover plate 21 blocks the rear opening 3, the front side of the carrier box 15 lifts the first movable cover plate 20, the first movable cover plate 20 flips upward, and the second movable cover plate 21 covers the rear part of the top of the carrier box 15. The setting of the second movable cover plate 21 prevents the heat inside the furnace body 1 from flowing out from the front side of the carrier box 15 through the partition plate 16 when the carrier box 15 moves forward into the cavity 4, thereby avoiding high temperature burns and also avoiding heat loss and resource waste.

[0034] Then, in the same manner as above, it immediately enters the interior of the furnace body 1 for annealing. Then, the first movable cover plate 20 is flipped upward and fixed by moving the front baffle 25. The stainless steel tube that has been annealed on the front side of the partition 16 is taken out and a new stainless steel tube is put in. This process is repeated in an alternating cycle. In this way, not only is the trouble of opening and closing the door repeatedly avoided, but the trouble of waiting for the operator to take out and put in the stainless steel is also avoided, making the whole process more efficient and flexible.

[0035] The device, through the arrangement of the first movable cover plate 20 and the second movable cover plate 21, allows the first movable cover plate 20 and the second movable cover plate 21 to cover the outer part of the carrier box 15 in time when the carrier box 15 is moved, so as to prevent the heat inside the furnace body 1 from flowing out from the front side of the carrier box 15 through the partition plate 16, thereby avoiding high temperature burns and also avoiding heat loss and resource waste.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element 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.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A stainless steel tube annealing furnace with an antioxidant coating, comprising a furnace body (1), characterized in that: The furnace body (1) has openings (3) on both the front and rear sides near the bottom. The furnace body (1) has a cavity (4) inside. A support box (15) is movably connected through the bottom of the cavity (4). The front side of the support box (15) is movably connected through the opening (3). A partition (16) is fixedly connected to the inner cavity of the support box (15). A fixing plate (17) is fixedly connected to the front side of the support box (15) near the bottom. The bottom of the furnace body (1) has a groove (19). A second hydraulic rod (18) is fixedly connected to the inner cavity of the groove (19). The front end of the second hydraulic rod (18) is fixedly connected to the fixing plate (17). A first movable cover plate (20) and a second movable cover plate (21) are movably connected to the front and rear sides of the furnace body (1), respectively.

2. The annealing furnace for stainless steel tubes with an anti-oxidation coating according to claim 1, characterized in that: The furnace body (1) is provided with an anti-oxidation coating on the outside. The furnace body (1) is provided with a controller (2) on the right side. The cavity (4) is provided with a horizontal plate (5). A connecting frame (6) is fixedly connected to the top of the horizontal plate (5). A first hydraulic rod (7) is fixedly connected to the top of the connecting frame (6). The first hydraulic rod (7) is fixedly connected to the top of the cavity (4). Several water spray heads (8) and gas flame heads (9) are fixedly installed in an array at the bottom of the horizontal plate (5).

3. The stainless steel tube annealing furnace with an anti-oxidation coating as described in claim 1, characterized in that: The first movable cover plate (20) and the second movable cover plate (21) are each provided with two hinges (22) at the top. The first movable cover plate (20) and the second movable cover plate (21) are movably connected to the furnace body (1) through the hinges (22). The first movable cover plate (20) and the second movable cover plate (21) are matched with the opening (3).

4. The stainless steel tube annealing furnace with an anti-oxidation coating as described in claim 1, characterized in that: The top of the furnace body (1) is provided with two movable frames (24). The two movable frames (24) are respectively close to the front and rear sides of the furnace body (1). The inner cavity of the movable frame (24) is provided with a limiting frame (23). The limiting frame (23) is fixedly connected to the top of the furnace body (1). The two movable frames (24) are fixedly connected with baffles (25) on the opposite sides. The baffles (25) are respectively matched with the first movable cover plate (20) and the second movable cover plate (21).

5. The stainless steel tube annealing furnace with an anti-oxidation coating as described in claim 2, characterized in that: The top of the horizontal plate (5) is provided with a first connecting pipe (10) and a second connecting pipe (12). The first connecting pipe (10) is connected to a number of water spray heads (8), and the second connecting pipe (12) is connected to a number of gas burner heads (9). The top of the first connecting pipe (10) and the second connecting pipe (12) are respectively fixedly inserted with a water inlet pipe (11) and an air inlet pipe (13). The top of the water inlet pipe (11) and the air inlet pipe (13) can move through the top of the cavity (4). The top of the furnace body (1) is fixedly inserted with an exhaust pipe (14) near the rear side.

Images