A heat treatment device for the production of stainless steel welded pipes

Abstract

The present invention relates to the technical field of metal processing, and specifically relates to a heat treatment device for the production of stainless steel welded pipes, including a base; a power assembly, the power assembly includes two support seats, one side of one of the support seats is fixedly connected with a motor, and the output shaft end of the motor is fixedly connected with a rotating shaft; a rotating assembly, the rotating assembly includes a cross runner, and four ends of the cross runner are fixedly connected with fixing disks, and a plurality of activity grooves that completely penetrate the fixing disks are opened inside the fixing disks; a support assembly, the support assembly includes a plurality of support rods. For this heat treatment device for the production of stainless steel welded pipes, the inner wall of the pipe is supported by a plurality of support rods and cushion strips made of ceramic materials, so that when the strength of the pipe itself decreases due to heat, the pipe is supported by the support rods surrounding in a circle to prevent its deformation, and by rotating the internal thread ring, the diameter of the circle formed by the support rods is changed, so as to adapt to pipes of different diameters, thereby improving the scope of application.

Description

Technical Field

[0001] The present invention relates to the technical field of metal processing, and particularly to a heat treatment device for the production of stainless steel welded pipes. Background Art

[0002] Stainless steel welded pipes are used in a wide range of applications, such as in municipal engineering, the transportation of gases or liquids, and the protection of pipelines. The heat treatment of stainless steel pipes is to change their physical and mechanical properties and internal stresses, so as to obtain better performance in use.

[0003] When heat-treating thin-walled pipes with a relatively long depth, since the strength of the pipes themselves is weakened during the heat treatment process, the traditional horizontal heating furnace will cause local deformation of the pipes when taking the pipes out of the furnace, and then the pipes need to be corrected, thus increasing the processing flow. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat treatment device for the production of stainless steel welded pipes, so as to solve the problem that the traditional horizontal heating furnace will cause local deformation of the pipes when taking the pipes out of the furnace, and then the pipes need to be corrected, thus increasing the processing flow as mentioned in the above background art. To achieve the above purpose, the present invention provides the following technical solution: A heat treatment device for the production of stainless steel welded pipes, including a base;

[0005] A power assembly, the power assembly includes two support seats, one side of one of the support seats is fixedly connected with a motor, and the output shaft end of the motor is fixedly connected with a rotating shaft;

[0006] A rotating assembly, the rotating assembly includes a cross-shaped rotating wheel, and four ends of the cross-shaped rotating wheel are fixedly connected with fixed disks, and a plurality of activity slots that completely penetrate the fixed disks are opened inside the fixed disks;

[0007] A support assembly, the support assembly includes a plurality of support rods, two connecting rods are respectively hinged to one side of each support rod, and stop rods are fixedly connected to opposite sides of the support rods;

[0008] An adjusting assembly, the adjusting assembly includes an adjusting shaft, a first connecting ring is fixedly sleeved on the side surface of the adjusting shaft, a second connecting ring is slidably sleeved on the side surface of the adjusting shaft, and an internally threaded ring is movably connected through threads on a threaded section of the adjusting shaft, and one side of the internally threaded ring is fixedly connected with a sleeve and the other end of the sleeve abuts against the second connecting ring;

[0009] Connecting component, the connecting component includes an electromagnetic induction coil, both ends of the electromagnetic induction coil are respectively lapped with electric pieces, a fixing rod is movably sleeved inside the electric piece, a retaining piece is fixedly sleeved on the side surface of the fixing rod, a first retaining column is fixedly connected to one side of the retaining piece close to the electric piece, a second retaining column is fixedly connected to one side of the electric piece close to the retaining piece, and a snap spring is sleeved on the side surface of the fixing rod.

[0010] Further preferably, the bottom of the support base is fixedly connected to both sides of the top of the support base, and the rotating shaft completely penetrates through the two support bases and is rotatably connected.

[0011] Further preferably, the inside of the cross-shaped runner is fixedly sleeved on the side surface of the rotating shaft, and the plurality of moving grooves are distributed in an annular array.

[0012] Further preferably, the plurality of support rods respectively penetrate through the moving grooves and are movably connected, the side surface of the retaining rod abuts against one side of the fixed disk, and a cushion strip is fixedly connected to one side of the support rod away from the connecting rod.

[0013] Further preferably, two grips for rotating the internal thread ring are fixedly connected to the side surface of the internal thread ring, the aperture of the sleeve is larger than the diameter of the adjusting shaft, hinge shafts are respectively fixedly connected to a plurality of grooves on the side surface of the first connecting ring and the hinge shafts are hinged to the connecting rod, there are the same hinge shafts on the side surface of the second connecting ring as those on the first connecting ring, a limiting block is fixedly connected to the annular inner wall of the second connecting ring, a spring is movably connected between the opposite sides of the first connecting ring and the second connecting ring and the spring is sleeved on the adjusting shaft, and a limiting groove for limiting the second connecting ring is formed on the side surface of the adjusting shaft and the limiting block is slidably connected in the limiting groove.

[0014] Further preferably, a plurality of reinforcing ribs are fixedly connected to one side of the fixed disk and the reinforcing ribs are fixedly connected to the electromagnetic induction coil, an electromagnetic induction heater main body is fixedly connected to one side of the top of the base, the two electric pieces are respectively electrically connected to both ends of the electromagnetic induction coil, the two electric pieces are also electrically connected to the two electrodes of the electromagnetic induction heater main body, the snap spring is located between the retaining piece and the electric piece and the two pins of the snap spring respectively abut against the first retaining column and the second retaining column, under the action of the snap spring, the two electric pieces deflect with the fixing rod fixed on the electromagnetic induction heater main body as the center, and their bottoms approach each other and do not touch, making it in a V shape. When both ends of the electromagnetic induction coil are in contact with the two electric pieces, under the action of the snap spring, the two electric pieces are in close contact with both ends of the electromagnetic induction coil under the action of the snap spring, ensuring the connection of the circuit.

[0015] Further preferably, a pipe is provided inside the electromagnetic induction coil, and the inner wall of the pipe abuts against a plurality of pad strips that are arranged in a circular shape. A plurality of exhaust grooves for ventilation are formed inside the base, and a fan group for air-cooling the pipe is sleeved inside the exhaust grooves. One side of the top of the base is fixedly connected with a main control box for controlling the electromagnetic induction heater main body and the motor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] In the present invention, the inner wall of the pipe is supported by a plurality of ceramic support rods and pad strips, so that when the strength of the pipe itself decreases due to heat, the pipe is supported by the circularly arranged support rods to prevent deformation. Moreover, by rotating the internal thread ring, the diameter of the circle formed by the support rods is changed, so as to adapt to pipes of different diameters, thereby improving the scope of application.

[0018] In the present invention, the cross-shaped runner is driven by the motor to rotate, so that the pipe enters the cooling pool formed inside the base after heating and is cooled by the fan group. The pipe originally located at the top is rotated to a horizontal position, so that the electromagnetic induction coil is electrically connected to the two electric plates and heats the pipe. And the operator can replace the pipe moving upward from the cooling pool, so that heating, cooling and the loading and unloading of the pipe are carried out synchronously, thereby improving the working efficiency.

[0019] In the present invention, by placing the entire pipe within the range of the electromagnetic induction coil, the entire pipe is heated simultaneously, and when it enters the cooling pool, it is cooled synchronously, so that the whole pipe is uniformly heated and cooled, ensuring synchronous thermal expansion or cooling contraction of the whole pipe, improving the effect of heat treatment and reducing the possibility of local deformation, reducing the concentricity deviation, and improving the finished product quality of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is an exploded structural schematic diagram of the present invention;

[0022] Figure 3 is a three-dimensional structural schematic diagram of the electromagnetic induction coil and the reinforcing ribs of the present invention;

[0023] Figure 4 is an exploded structural schematic diagram of the support assembly and the adjustment assembly of the present invention;

[0024] Figure 5 is an enlarged structural schematic diagram of the support assembly and the adjustment assembly of the present invention;

[0025] Figure 6 is a structural schematic diagram of the rotation assembly and the power assembly of the present invention;

[0026] Figure 7 Schematic cross-sectional structure diagram of the present invention;

[0027] Figure 8 Schematic enlarged structure diagram of a partial cross-section of the present invention;

[0028] Figure 9 Schematic top view structure diagram of a part of the present invention.

[0029] In the figure: 1, base; 2, power assembly; 3, rotating assembly; 4, supporting assembly; 5, adjusting assembly; 6, connecting assembly; 7, main control box; 8, exhaust slot; 9, fan group; 10, pipe; 201, support seat; 202, rotating shaft; 203, motor; 301, cross-shaped runner; 302, fixed disk; 303, movable slot; 401, support rod; 402, connecting rod; 403, blocking rod; 404, cushion strip; 501, first connecting ring; 502, hinge shaft; 503, second connecting ring; 504, limiting block; 505, spring; 506, sleeve; 507, internal thread ring; 508, grip; 509, adjusting shaft; 510, limiting slot; 601, reinforcing rib; 602, electromagnetic induction coil; 603, fixing rod; 604, blocking piece; 605, first blocking post; 606, snap ring; 607, second blocking post; 608, electric piece; 609, electromagnetic induction heater body. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-9 , the present invention provides a technical solution: a heat treatment device for stainless steel welded pipe production, including a base 1;

[0032] A power assembly 2, the power assembly 2 includes two support seats 201, one side of one of the support seats 201 is fixedly connected with a motor 203, and the output shaft end of the motor 203 is fixedly connected with a rotating shaft 202;

[0033] A rotating assembly 3, the rotating assembly 3 includes a cross-shaped runner 301, four ends of the cross-shaped runner 301 are fixedly connected with fixed disks 302, and a plurality of movable slots 303 that completely penetrate the fixed disks 302 are opened inside the fixed disks 302;

[0034] Support component 4, the support component 4 includes a plurality of support rods 401, two connecting rods 402 are respectively hinged to one side of the support rods 401, and stop rods 403 are fixedly connected to both opposite sides of the support rods 401;

[0035] Adjusting component 5, the adjusting component 5 includes an adjusting shaft 509, a first connecting ring 501 is fixedly sleeved on the side surface of the adjusting shaft 509, a second connecting ring 503 is slidably sleeved on the side surface of the adjusting shaft 509, and an internally threaded ring 507 is movably connected by threads on a threaded section of the adjusting shaft 509. One side of the internally threaded ring 507 is fixedly connected with a sleeve 506 and the other end of the sleeve 506 abuts against the second connecting ring 503;

[0036] Connecting component 6, the connecting component 6 includes an electromagnetic induction coil 602, electric pieces 608 are respectively lapped at both ends of the electromagnetic induction coil 602, a fixing rod 603 is movably sleeved inside the electric piece 608, a stop piece 604 is fixedly sleeved on the side surface of the fixing rod 603, a first stop post 605 is fixedly connected to one side of the stop piece 604 close to the electric piece 608, a second stop post 607 is fixedly connected to one side of the electric piece 608 close to the stop piece 604, and a snap ring 606 is sleeved on the side surface of the fixing rod 603.

[0037] In this embodiment, as Figure 1 、 Figure 2 and Figure 7 shown, the bottom of the support base 201 is fixedly connected to both sides of the top of the support base 201, and the rotating shaft 202 completely penetrates through the two support bases 201 and is rotatably connected.

[0038] In this embodiment, as Figure 2 、 Figure 6 and Figure 7 shown, the inside of the cross runner 301 is fixedly sleeved on the side surface of the rotating shaft 202, and a plurality of moving grooves 303 are distributed in a circular array.

[0039] In this embodiment, as Figure 4 、 Figure 5 and Figure 8 shown, a plurality of support rods 401 respectively penetrate through the moving grooves 303 and are movably connected, the side surface of the stop rod 403 abuts against one side of the fixed disk 302, and a cushion strip 404 is fixedly connected to the side of the support rod 401 away from the connecting rod 402.

[0040] In this embodiment, as Figure 4 、 Figure 5 and Figure 8As shown, two grips 508 for rotating the internal thread ring 507 are fixedly connected to the side surface of the internal thread ring 507. The aperture of the sleeve 506 is larger than the diameter of the adjusting shaft 509. Hinge shafts 502 are respectively fixedly connected to multiple grooves on the side surface of the first connecting ring 501, and the hinge shafts 502 are hinged to the connecting rods 402. There are the same hinge shafts 502 on the side surface of the second connecting ring 503 as those on the first connecting ring 501. A limiting block 504 is fixedly connected to the inner circumferential wall of the second connecting ring 503. A spring 505 is movably connected to the opposite side of the first connecting ring 501 and the second connecting ring 503, and the spring 505 is sleeved on the adjusting shaft 509. A limiting groove 510 for limiting the second connecting ring 503 is formed on the side surface of the adjusting shaft 509, and the limiting block 504 is slidably connected in the limiting groove 510.

[0041] In this embodiment, as Figure 9As shown, multiple reinforcing ribs 601 are fixedly connected to one side of the fixed disk 302, and the reinforcing ribs 601 are fixedly connected to the electromagnetic induction coil 602. One side of the top of the base 1 is fixedly connected with the electromagnetic induction heater main body 609. Two electric plates 608 are respectively electrically connected to the two ends of the electromagnetic induction coil 602, and the two electric plates 608 are also electrically connected to the two electrodes of the electromagnetic induction heater main body 609. The snap spring 606 is located between the retaining piece 604 and the electric plate 608, and the two pins of the snap spring 606 are respectively abutted against the first retaining post 605 and the second retaining post 607. Under the action of the snap spring 606, the two electric plates 608 deflect with the fixed rod 603 fixed on the electromagnetic induction heater main body 609 as the center, and their bottoms approach each other without contact, making them in a V shape. When the two ends of the electromagnetic induction coil 602 contact the two electric plates 608, under the action of the snap spring 606, the two electric plates 608 are in close contact with the two ends of the electromagnetic induction coil 602 under the action of the snap spring 606, ensuring the connection of the circuit. When in use, first pre-install four pipes 10 into the electromagnetic induction coil 602 and sleeved them in the support structure formed by surrounding a circle with multiple cushion strips 404. Then the operator rotates the grip 508, so that the internal thread ring 507 rotates on the adjusting shaft 509 through the thread, and then the sleeve 506 pushes the second connecting ring 503 to slide, so that the second connecting ring 503 moves towards the first connecting ring 501 against the force of the spring 505. The stop rod 403 on the support rod 401 abuts against one side of the fixed disk 302, so that the second connecting ring 503 changes the angle of the connecting rod 402 when moving, so that multiple support rods 401 spread from the center to the surrounding until the cushion strip 404 abuts against the inner wall of the pipe 10. Then start the electromagnetic induction heater main body 609 and the fan group 9 through the control switch on one side of the main control box 7. Then control the output shaft end of the motor 203 to rotate through the main control box 7, and electrically connect the two ends of the electromagnetic induction coil 602 to the two electric plates 608 respectively. At this time, stop the operation of the motor 203, and at this time the electromagnetic induction coil 602 is energized, so that the electromagnetic induction coil 602 heats the pipe 10. When the heating is completed, start the motor 203 again, so that the cross runner 301 rotates 90 degrees, so that the pipe 10 being heated moves downward and enters the cooling pool in the base 1, and is air-cooled by multiple fan groups 9. When it drops to the appropriate temperature, start the motor 203 again, so that the cooled pipe 10 is transmitted upward by 90 degrees again. At this time, the operator reversely rotates the grip 508, removes the heat-treated pipe 10, and replaces it with a new pipe that needs to be heat-treated, and repeats the above content, so that the pipe 10 is fixed, heated, cooled and loaded and unloaded.

[0042] In this embodiment, as Figure 1 、 Figure 2 and Figure 7As shown, a pipe 10 is provided inside the electromagnetic induction coil 602, and the inner wall of the pipe 10 abuts against a plurality of circularly arranged cushion strips 404. A plurality of exhaust slots 8 for ventilation are provided inside the base 1, and a fan group 9 for air-cooling the pipe 10 is sleeved inside the exhaust slots 8. One side of the top of the base 1 is fixedly connected with a main control box 7 for controlling the electromagnetic induction heater main body 609 and the motor 203.

[0043] The usage method and advantages of the present invention: For the heat treatment device used in the production of stainless steel welded pipes, during use, the working process is as follows:

[0044] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 shown, when in use, first pre-install four pipes 10 into the electromagnetic induction coil 602 and sleeve them in the support structure formed by a plurality of cushion strips 404 surrounding a circle. Then, the operator rotates the grip 508, causing the internal thread ring 507 to rotate on the adjustment shaft 509 through the thread. Subsequently, the sleeve 506 pushes the second connection ring 503 to slide, causing the second connection ring 503 to move towards the first connection ring 501 against the force of the spring 505. The stop lever 403 on the support rod 401 abuts against one side of the fixed disk 302, causing the angle of the connecting rod 402 to change when the second connection ring 503 moves, so that a plurality of support rods 401 spread from the center to the surrounding until the cushion strip 404 abuts against the inner wall of the pipe 10. Then, the electromagnetic induction heater main body 609 and the fan group 9 are started through the control switch on one side of the main control box 7. Subsequently, the output shaft end of the motor 203 is controlled to rotate through the main control box 7, and the two ends of the electromagnetic induction coil 602 are electrically connected to two electric plates 608 respectively. At this time, the operation of the motor 203 is stopped, and the electromagnetic induction coil 602 is electrified, causing the electromagnetic induction coil 602 to heat-treat the pipe 10. When the heating is completed, the motor 203 is started again, causing the cross runner 301 to rotate 90 degrees, causing the pipe 10 being heated to move downward and enter the cooling pool inside the base 1, and being air-cooled by a plurality of fan groups 9. After it cools down to an appropriate temperature, the motor 203 is started again, causing the cooled pipe 10 to be transmitted upward by another 90 degrees. At this time, the operator reversely rotates the grip 508 to remove the heat-treated pipe 10 and replace it with a new pipe to be heat-treated, repeating the above process to fix, heat, cool, and load and unload the pipe 10.

[0045] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A heat treatment device for the production of stainless steel welded pipes, characterized in that, Comprising a base (1); A power assembly (2), the power assembly (2) includes two support seats (201), one side of one of the support seats (201) is fixedly connected to a motor (203), and the output shaft end of the motor (203) is fixedly connected to a rotating shaft (202); A rotating assembly (3), the rotating assembly (3) includes a cross-shaped runner (301), four ends of the cross-shaped runner (301) are fixedly connected with fixed disks (302), and a plurality of activity slots (303) that completely penetrate the fixed disks (302) are formed inside the fixed disks (302); A support assembly (4), the support assembly (4) includes a plurality of support rods (401), two connecting rods (402) are respectively hinged to one side of the support rods (401), and stop rods (403) are fixedly connected to opposite sides of the support rods (401); An adjusting assembly (5), the adjusting assembly (5) includes an adjusting shaft (509), a first connecting ring (501) is fixedly sleeved on the side surface of the adjusting shaft (509), a second connecting ring (503) is slidably sleeved on the side surface of the adjusting shaft (509), an internally threaded ring (507) is movably connected through threads on a threaded section of the adjusting shaft (509), one side of the internally threaded ring (507) is fixedly connected with a sleeve (506) and the other end of the sleeve (506) abuts against the second connecting ring (503); Connecting component (6), the connecting component (6) includes an electromagnetic induction coil (602), both ends of the electromagnetic induction coil (602) are respectively lapped with electric sheets (608), a fixing rod (603) is movably sleeved inside the electric sheet (608), a retaining piece (604) is fixedly sleeved on the side surface of the fixing rod (603), a first retaining post (605) is fixedly connected to one side of the retaining piece (604) close to the electric sheet (608), a second retaining post (607) is fixedly connected to one side of the electric sheet (608) close to the retaining piece (604), a snap spring (606) is sleeved on the side surface of the fixing rod (603), a plurality of the support rods (401) respectively penetrate through the movable slots (303) and are movably connected, the side surface of the retaining rod (403) abuts against one side of the fixed disk (302), a cushion strip (404) is fixedly connected to one side of the support rod (401) away from the connecting rod (402), two grips (508) for rotating the internal thread ring (507) are fixedly connected to the side surface of the internal thread ring (507), the aperture of the sleeve (506) is larger than the diameter of the adjusting shaft (509), a plurality of hinge shafts (502) are respectively fixedly connected in the plurality of grooves on the side surface of the first connecting ring (501) and the hinge shafts (502) are hinged to the connecting rod (402), there are the same hinge shafts (502) on the side surface of the second connecting ring (503) as those on the first connecting ring (501), a limiting block (504) is fixedly connected to the inner circumferential wall of the second connecting ring (503), a spring (505) is movably connected to the opposite sides of the first connecting ring (501) and the second connecting ring (503) and the spring (505) is sleeved on the adjusting shaft (509), a limiting groove (510) for limiting the second connecting ring (503) is formed on the side surface of the adjusting shaft (509) and the limiting block (504) is slidably connected in the limiting groove (510).

2. The heat treatment device for the production of stainless steel welded pipes according to claim 1, characterized in that: The bottom of the support base (201) is fixedly connected to both sides of the top of the support base (201), and the rotating shaft (202) completely penetrates through the two support bases (201) and is rotatably connected.

3. A heat treatment device for stainless steel welded pipe production according to claim 1, characterized in that: The inside of the cross-shaped runner (301) is fixedly sleeved on the side surface of the rotating shaft (202), and a plurality of the movable slots (303) are distributed in an annular array.

4. The heat treatment device for stainless steel welded pipe production according to claim 1, characterized in that: A plurality of reinforcing ribs (601) are fixedly connected to one side of the fixed disk (302) and the reinforcing ribs (601) are fixedly connected to the electromagnetic induction coil (602), an electromagnetic induction heater main body (609) is fixedly connected to one side of the top of the base (1), the two electric sheets (608) are respectively electrically connected to both ends of the electromagnetic induction coil (602), the two electric sheets (608) are also electrically connected to the two electrodes of the electromagnetic induction heater main body (609), the snap spring (606) is located between the retaining piece (604) and the electric sheet (608) and the two pins of the snap spring (606) respectively abut against the first retaining post (605) and the second retaining post (607).

5. A heat treatment device for the production of stainless steel welded pipes according to claim 1, characterized in that: The interior of the electromagnetic induction coil (602) is provided with a pipe (10), and the inner wall of the pipe (10) abuts against a plurality of circularly arranged gasket strips (404). A plurality of exhaust slots (8) for ventilation are formed inside the base (1). A fan group (9) for air-cooling the pipe (10) is sleeved inside the exhaust slot (8). One side of the top of the base (1) is fixedly connected with a main control box (7) for controlling the electromagnetic induction heater body (609) and the motor (203).

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