Oxidation-reduction protection equipment of stainless steel seamless steel pipe heat treatment furnace

Abstract

The utility model provides oxidation-reduction protection equipment of a stainless steel seamless steel pipe heat treatment furnace, which comprises a furnace body, a pretreatment cavity, a heat treatment cavity and a cooling cavity are uniformly distributed in the furnace body, the heat treatment cavity is positioned between the pretreatment cavity and the cooling cavity, and a pipeline feeding hole is formed from one end to the other end of the furnace body in a penetrating manner; the pipeline feeding hole is communicated with the pretreatment cavity, the heat treatment cavity and the cooling cavity; when heat treatment is carried out on the stainless steel seamless steel pipe, oxygen can be prevented from entering the heat treatment cavity, oxidation-reduction protection is carried out on the stainless steel seamless steel pipe, and the heat treatment quality of the stainless steel seamless steel pipe is improved; meanwhile, in the process of taking and placing the stainless steel seamless steel pipe, normal operation of the heat treatment cavity is not affected, and therefore the whole device is more convenient, flexible and efficient.

Description

Technical Field

[0001] The utility model relates to the field of stainless steel seamless steel pipe processing, in particular to an oxidation-reduction protection device for a stainless steel seamless steel pipe heat treatment furnace. Background Art

[0002] The redox protection equipment for stainless steel seamless pipe heat treatment furnace is a system specially designed to protect steel pipes from oxidation and reduction reactions during heat treatment. This equipment is essential to ensure the quality and performance of steel pipes, especially when treated at high temperatures.

[0003] However, in the existing stainless steel seamless steel pipe heat treatment furnace, when the stainless steel seamless steel pipe is heat treated, the oxygen container enters into the interior of the heat treatment furnace during the process of opening and closing the furnace door, thereby affecting the quality of the heat treatment of the stainless steel seamless steel pipe.

[0004] Therefore, it is very necessary to invent a redox protection device for a stainless steel seamless steel pipe heat treatment furnace. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a technical solution adopted by a redox protection device for a stainless steel seamless steel pipe heat treatment furnace: a redox protection device for a stainless steel seamless steel pipe heat treatment furnace, comprising a furnace body, wherein: a pretreatment chamber, a heat treatment chamber and a cooling chamber are evenly distributed inside the furnace body, and the heat treatment chamber is located between the pretreatment chamber and the cooling chamber, and a pipeline feed opening is opened from one end to the other end of the furnace body; the pipeline feed opening is connected with the pretreatment chamber, the heat treatment chamber and the cooling chamber;

[0006] Preferably, four door cavities are evenly distributed on the furnace body, and the door cavities are connected with the pipeline material outlet; the pretreatment chamber, the heat treatment chamber and the cooling chamber are respectively located between two adjacent door cavities; and a sealing door is slidably installed inside each of the door cavities through an electric drive mechanism;

[0007] Preferably, an atmosphere control box and a vacuum control box are fixedly installed on both sides of one end of the furnace body, and an electric control box is fixedly installed on one side of the furnace body close to the atmosphere control box;

[0008] Preferably, air holes are provided on both sides of the furnace body, and the air holes are located in the corresponding pretreatment chamber, heat treatment chamber and cooling chamber;

[0009] Preferably, the vacuum pump exhaust end of the vacuum control box is fixedly connected to the air holes on one side of the pretreatment chamber, the heat treatment chamber and the cooling chamber through a pipeline;

[0010] Preferably, two electric conveying rollers and an annular nozzle are evenly and fixedly installed inside the pipeline feeding port, the door cavity and the sealing door, and the annular nozzle is located between the two electric conveying rollers, and the annular nozzle is coaxial with the pipeline feeding port; the rotating roller of the electric conveying roller is located in the middle and lower part of the annular nozzle; the annular nozzle is fixedly connected to the gas tank inside the atmosphere control box through pipeline 2;

[0011] Preferably, the controller inside the electric control box is electrically connected to the electric drive mechanism, the vacuum pump, the electric conveying roller and the gas tank.

[0012] Preferably, the pretreatment chamber, heat treatment chamber and cooling chamber of the furnace body are each provided with a cover plate matching therewith, and the cover plate is sealed with the corresponding pretreatment chamber, heat treatment chamber and cooling chamber.

[0013] Preferably, the pipeline 2 includes a main pipe, and branch pipes corresponding to the annular nozzles are evenly distributed on the main pipe, one end of the main pipe is fixedly connected to the gas tank; the branch pipes pass through corresponding air holes and are fixedly connected to corresponding annular nozzles; the main pipe and the branch pipes are connected to the gas tank and the annular nozzles.

[0014] Preferably, the electric drive mechanism includes an electric push rod, and the electric push rod is fixedly installed on both sides of the door cavity, and a support arm is fixedly installed on the output end of the electric push rod; a connecting column is fixedly installed on one end of the support arm, and the bottom end of the connecting column is fixedly connected to the sealing door.

[0015] Preferably, an electric heating mechanism for heat treating the stainless steel seamless steel pipe is provided inside the heat treatment chamber, and a temperature sensor is provided inside the heat treatment chamber, and the electric heating mechanism and the temperature sensor are electrically connected to communicate with the controller.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The overall arrangement of the utility model can prevent oxygen from entering the heat treatment chamber when the stainless steel seamless steel pipe is heat treated, and perform oxidation-reduction protection on the stainless steel seamless steel pipe, thereby improving the quality of the heat treatment of the stainless steel seamless steel pipe; at the same time, in the process of taking and placing the stainless steel seamless steel pipe, the normal operation of the heat treatment chamber will not be affected, thereby making the whole more convenient, flexible and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the furnace body of the utility model.

[0019] Figure 2 It is a partial enlarged structural schematic diagram of point A of the utility model.

[0020] Figure 3It is a schematic diagram of the overall structure of the utility model.

[0021] In the figure:

[0022] Furnace body 1, pretreatment chamber 2, heat treatment chamber 3, cooling chamber 4, electric conveying roller 5, annular nozzle 6, branch pipe 7, main pipe 8, atmosphere control box 9, air hole 10, vacuum control box 11, electric control box 12, pipeline feeding port 13, door chamber 14, sealing door 15, electric push rod 16, support arm 17, connecting column 18, cover plate 19. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0024] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] Embodiment 1

[0027] Reference Figure 1-3, a redox protection device for a heat treatment furnace for stainless steel seamless steel pipes, comprising a furnace body 1, wherein: a pretreatment chamber 2, a heat treatment chamber 3 and a cooling chamber 4 are uniformly arranged inside the furnace body 1, and through the arrangement of the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4, during the process of treating the stainless steel seamless steel pipes in the heat treatment chamber 3, the next batch of stainless steel seamless steel pipes to be treated can be placed in the pretreatment chamber 2 in advance, so that when the stainless steel seamless steel pipes in the heat treatment chamber 3 are treated and transported to the cooling chamber 4, the stainless steel seamless steel pipes in the pretreatment chamber 2 can be quickly transported to the heat treatment chamber 3, thereby improving the treatment efficiency, and the heat treatment chamber 3 is between the pretreatment chamber 2 and the cooling chamber 4, and a pipeline feed port 13 is opened from one end to the other end of the furnace body 1, so that the stainless steel seamless steel pipes can enter the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4 in turn for heat treatment and then be discharged; the pipeline feed port 13 is connected with the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4;

[0028] Four door cavities 14 are evenly distributed on the furnace body 1. Through the setting of the door cavities 14, the sealing door 15 can be supported and limited, and the sealing between the pipeline feeding port 13 and the sealing door 15 can be ensured, and the door cavity 14 is connected with the pipeline feeding port 13; the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4 are respectively located between two adjacent door cavities 14; the inside of each door cavity 14 is slidably installed with a sealing door 15 through an electric drive mechanism, and the sealing door 15 and the door cavity 14 are sealed. Through the setting of the sealing door 15, the switch of the pipeline feeding port 13 can be controlled;

[0029] An atmosphere control box 9 and a vacuum control box 11 are fixedly installed on both sides of one end of the furnace body 1, and an electric control box 12 is fixedly installed on one side of the furnace body 1 close to the atmosphere control box 9;

[0030] Air holes 10 are provided on both sides of the furnace body 1 so that the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4 are connected with the vacuum pump and the gas tank inside the atmosphere control box 9 and the vacuum control box 11, and the air holes 10 are located in the corresponding pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4;

[0031] The exhaust end of the vacuum pump inside the vacuum control box 11 is fixedly connected to the air hole 10 on one side of the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4 through a pipeline and an electromagnetic valve. The air hole 10 and the pipeline are sealed. Through the setting of the vacuum pump, oxygen in the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4 can be extracted;

[0032] Two electric conveying rollers 5 and an annular nozzle 6 are evenly and fixedly installed inside the pipeline feeding port 13, the door cavity 14 and the sealing door 15. The electric conveying rollers 5 are arranged so as to transport the stainless steel seamless steel pipe to move between the pretreatment chamber 2, the heat treatment chamber 3 and the cooling chamber 4, and the annular nozzle 6 is located between the two electric conveying rollers 5. The annular nozzle 6 is arranged so that the stainless steel seamless steel pipe can fully contact with the protective gas from the annular nozzle 6 during the passing process. The annular nozzle 6 is coaxial with the pipeline feeding port 13; the rotating roller of the electric conveying roller 5 is located in the middle and lower part of the annular nozzle 6; the annular nozzle 6 is fixedly connected with the gas tank inside the atmosphere control box 9 through the pipeline 2;

[0033] The controller inside the electric control box 12 is electrically connected to the electric drive mechanism, the vacuum pump, the electric conveying roller 5 and the gas tank; the controller adopts existing technology, such as PLC in the existing technology, so it will not be described in detail here.

[0034] The pretreatment chamber 2, heat treatment chamber 3 and cooling chamber 4 of the furnace body 1 are each provided with a cover plate 19 matching them, so as to facilitate the later maintenance of the components inside the pretreatment chamber 2, heat treatment chamber 3 and cooling chamber 4, and the cover plate 19 is sealed with the corresponding pretreatment chamber 2, heat treatment chamber 3 and cooling chamber 4.

[0035] Pipeline 2 includes a main pipe 8, and branch pipes 7 corresponding to the annular nozzles 6 are evenly distributed on the main pipe 8, one end of the main pipe 8 is fixedly connected to the gas tank; the branch pipes 7 pass through the corresponding air holes 10 and are fixedly connected to the corresponding annular nozzles 6, and the air holes 10 and the branch pipes 7 are sealed; the main pipe 8 and the branch pipes 7 are connected to the gas tank and the annular nozzles 6; through the arrangement of the main pipe 8 and the branch pipes 7, the protective gas in the gas tank can be transported to the corresponding annular nozzles 6.

[0036] The electric drive mechanism includes an electric push rod 16. Through the setting of the electric push rod 16, the sealing door 15 can be driven to move up and down in the door cavity 14, thereby realizing the opening and closing of the pipeline feed port 13. The electric push rod 16 is fixedly installed on both sides of the door cavity 14, and a support arm 17 is fixedly installed on the output end of the electric push rod 16; a connecting column 18 is fixedly installed on one end of the support arm 17, and the bottom end of the connecting column 18 is fixedly connected to the sealing door 15.

[0037] An electric heating mechanism for heat treatment of stainless steel seamless steel pipes is arranged inside the heat treatment chamber 3. The electric heating mechanism adopts existing technology, such as electric heating wire heating or electric heating tube heating in the existing technology. Since it is a very mature technology, it will not be described in detail here. A temperature sensor is arranged inside the heat treatment chamber 3. The electric heating mechanism and the temperature sensor are electrically connected to communicate with the controller.

[0038] In this embodiment, when in use, the sealing door 15 outside the pretreatment chamber 2 is opened by the electric push rod 16, and the other sealing doors 15 are still in a closed state, and the stainless steel seamless steel pipe is transported to the electric conveying roller 5 in the pretreatment chamber 2 through the opened pipeline feeding port 13, and then the sealing door 15 is closed, and the electromagnetic valve between the vacuum pump and the pretreatment chamber 2 is started, and the oxygen entering the pretreatment chamber 2 is extracted by the vacuum pump;

[0039] After the oxygen in the pretreatment chamber 2 is completely extracted, the sealing door 15 between the pretreatment chamber 2 and the heat treatment chamber 3 is opened, and the stainless steel seamless steel pipe is transported to the heat treatment chamber 3 through the electric conveying roller 5 inside the pretreatment chamber 2. During the transportation process, the protective gas is provided to the annular nozzles 6 in the pretreatment chamber 2 and the heat treatment chamber 3 through the gas tank; in this way, when the stainless steel seamless steel pipe passes through the annular nozzle 6, it will be fully in contact with the protective gas until the stainless steel seamless steel pipe enters the electric conveying roller 5 in the heat treatment chamber 3, and then the sealing door 15 between the pretreatment chamber 2 and the heat treatment chamber 3 is closed, and the stainless steel seamless steel pipe can be heat-treated;

[0040] During the heat treatment process, protective gas is provided through the annular nozzle 6; during the heat treatment chamber 3 treating the stainless steel seamless steel pipe, the sealing door 15 outside the pretreatment chamber 2 is opened again in the above manner, and the next batch of stainless steel seamless steel pipes to be heat treated are placed on the electric conveyor roller 5 in the pretreatment chamber 2, and the oxygen inside is extracted;

[0041] In this way, when the stainless steel seamless steel pipe inside the heat treatment chamber 3 is processed, the sealing door 15 between the heat treatment chamber 3 and the cooling chamber 4 and the sealing door 15 between the heat treatment chamber 3 and the pretreatment chamber 2 are opened; then the processed stainless steel seamless steel pipe is transported to the electric conveying roller 5 in the cooling chamber 4 by the electric conveying roller 5 inside the heat treatment chamber 3, and at the same time, the stainless steel seamless steel pipe inside the pretreatment chamber 2 is transported to the heat treatment chamber 3 by the electric conveying roller 5 inside the pretreatment chamber 2, and then the sealing door 15 between the heat treatment chamber 3 and the cooling chamber 4 and the sealing door 15 between the heat treatment chamber 3 and the pretreatment chamber 2 can be closed;

[0042] In this way, the heat treatment chamber 3 continues to treat the stainless steel seamless steel pipe, and the pretreatment chamber 2 continues to place the stainless steel seamless steel pipe to be treated;

[0043] After the stainless steel seamless steel pipe in the cooling chamber 4 is cooled, the sealing door 15 outside the cooling chamber 4 is opened to take out the stainless steel seamless steel pipe; then the sealing door 15 is closed, and the oxygen inside the cooling chamber 4 is extracted by a vacuum pump; finally, the cycle is repeated.

[0044] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A redox protection device for a stainless steel seamless steel pipe heat treatment furnace, characterized in that: The invention comprises a furnace body (1), wherein: a pretreatment chamber (2), a heat treatment chamber (3) and a cooling chamber (4) are evenly distributed inside the furnace body (1), and the heat treatment chamber (3) is located between the pretreatment chamber (2) and the cooling chamber (4); a pipeline material outlet (13) is provided from one end to the other end of the furnace body (1); and the pipeline material outlet (13) is communicated with the pretreatment chamber (2), the heat treatment chamber (3) and the cooling chamber (4); The furnace body (1) is evenly provided with four door cavities (14), and the door cavities (14) are in communication with the pipeline material outlet (13); the pretreatment chamber (2), the heat treatment chamber (3) and the cooling chamber (4) are respectively located between two adjacent door cavities (14); and a sealing door (15) is slidably installed inside each of the door cavities (14) through an electric drive mechanism; An atmosphere control box (9) and a vacuum control box (11) are fixedly installed on both sides of one end of the outside of the furnace body (1), and an electric control box (12) is fixedly installed on one side of the furnace body (1) close to the atmosphere control box (9); The furnace body (1) is provided with air holes (10) on both sides, and the air holes (10) are located in the corresponding pretreatment chamber (2), heat treatment chamber (3) and cooling chamber (4); The vacuum pump exhaust end of the vacuum control box (11) is fixedly connected to the air hole (10) on one side of the pretreatment chamber (2), the heat treatment chamber (3) and the cooling chamber (4) through a pipeline; Two electric conveying rollers (5) and an annular spray head (6) are evenly and fixedly installed inside the pipeline material outlet (13), the door cavity (14) and the sealing door (15), and the annular spray head (6) is located between the two electric conveying rollers (5); the rotating roller of the electric conveying roller (5) is located in the middle and lower part of the annular spray head (6); the annular spray head (6) is fixedly connected to the gas tank inside the atmosphere control box (9) through pipeline 2; The controller inside the electric control box (12) is electrically connected to the electric drive mechanism, the vacuum pump, the electric conveying roller (5) and the gas tank.

2. The oxidation-reduction protection device for a heat treatment furnace for a stainless steel seamless steel pipe according to claim 1, characterized in that: The pretreatment chamber (2), the heat treatment chamber (3) and the cooling chamber (4) of the furnace body (1) are each provided with a cover plate (19) matching therewith, and a sealing treatment is performed between the cover plate (19) and the corresponding pretreatment chamber (2), the heat treatment chamber (3) and the cooling chamber (4).

3. The oxidation-reduction protection device for a stainless steel seamless steel pipe heat treatment furnace according to claim 1, characterized in that: The pipeline 2 comprises a main pipe (8), and branch pipes (7) corresponding to the annular spray heads (6) are evenly arranged on the main pipe (8); one end of the main pipe (8) is fixedly connected to the gas tank; the branch pipes (7) pass through corresponding air holes (10) and are fixedly connected to the corresponding annular spray heads (6); the main pipe (8) and the branch pipes (7) are in communication with the gas tank and the annular spray heads (6).

4. The oxidation-reduction protection device for a stainless steel seamless steel pipe heat treatment furnace according to claim 1, characterized in that: The electric drive mechanism comprises an electric push rod (16), and the electric push rod (16) is fixedly mounted on both sides of the door cavity (14), and a support arm (17) is fixedly mounted on the output end of the electric push rod (16); a connecting column (18) is fixedly mounted on one end of the support arm (17), and the bottom end of the connecting column (18) is fixedly connected to the sealing door (15).

5. The oxidation-reduction protection device for a heat treatment furnace for a stainless steel seamless steel pipe according to claim 1, characterized in that: The heat treatment chamber (3) is provided with an electric heating mechanism for heat treatment of the stainless steel seamless steel pipe, and the heat treatment chamber (3) is provided with a temperature sensor. The electric heating mechanism and the temperature sensor are electrically connected to communicate with the controller.

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