A heat treatment device for annealing steel pipe

Abstract

The present invention relates to the technical field of steel pipe production, and specifically to a heat treatment device for annealing steel pipes, comprising a main body, a heating mechanism and a feeding and discharging mechanism, wherein the heating mechanism is arranged on the top of the main body, and the feeding and discharging mechanism is arranged on the top of the heating mechanism, wherein the heating mechanism comprises a heating chamber, wherein the top of the heating chamber is provided with an opening, wherein a rotating frame is rotatably connected inside the heating mechanism, wherein the circumferential outer surface of the rotating frame is provided with an installation groove, wherein a clamping mechanism is arranged inside the installation groove for clamping and rotating the steel pipe to achieve uniform heating, wherein the feeding and discharging mechanism comprises a limiting shell fixedly installed at the top opening of the heating chamber, wherein cavities are arranged inside the two ends of the limiting shell. The present invention realizes continuous self-rotation heating of the steel pipe by combining the rotating frame with the clamping mechanism, wherein the automatic feeding and discharging of the feeding and discharging mechanism shortens the production cycle, wherein the continuous rotation of the rotating frame supports the simultaneous annealing of multiple pipes, thereby meeting large-scale production and reducing labor intensity.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe production, and in particular to a heat treatment device for annealing a steel pipe. Background Art

[0002] In the steel pipe processing industry, annealing is an important step to improve steel performance, improve its organizational structure, eliminate internal stress and improve processing performance. However, the existing short steel pipe annealing equipment and technology still have a series of problems in practical application, which limit the improvement of production efficiency and further improvement of product quality.

[0003] First, uneven heating is a common problem in existing annealing equipment. Due to the short length of short steel pipes, traditional static heating methods are difficult to ensure uniform heating of all parts of the steel pipe, resulting in inconsistent annealing effects and affecting the final performance of the steel.

[0004] Secondly, high energy consumption is another problem that needs to be solved urgently. During the heating process, traditional annealing equipment often consumes a lot of energy to maintain the furnace temperature due to limited heat transfer efficiency, which not only increases production costs, but also does not meet the current environmental protection requirements of energy conservation and emission reduction.

[0005] In addition, low production efficiency is also a major drawback of existing annealing equipment. Traditional equipment mostly adopts intermittent or single-pipe processing methods, which cannot achieve continuous annealing of steel pipes, resulting in a long production cycle and cannot meet the needs of large-scale production.

[0006] Finally, the low degree of automation is also a challenge faced by existing annealing equipment. Many traditional equipment still rely on manual operation, which not only increases labor intensity, but also reduces production efficiency and product quality stability. Summary of the invention

[0007] The present invention discloses a heat treatment device for annealing a steel pipe, which solves the problems in the prior art that the existing short steel pipe annealing equipment has deficiencies in heating uniformity, energy consumption, production efficiency and automation degree.

[0008] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a heat treatment device for annealing of steel pipes, comprising a main body, a heating mechanism and a feeding and discharging mechanism, the top of the main body is provided with a heating mechanism, the top of the heating mechanism is provided with a feeding and discharging mechanism, the heating mechanism comprises a heating chamber, the top of the heating chamber is provided with an opening, a rotating frame is rotatably connected inside the heating mechanism, the outer surface of the circumference of the rotating frame is provided with an installation groove, the inside of the installation groove is provided with a clamping mechanism for clamping and rotating the steel pipe to achieve uniform heating, the feeding and discharging mechanism The structure includes a limiting shell fixedly installed at the top opening of the heating chamber, and cavities are arranged inside the two ends of the limiting shell, one end of the limiting shell is provided with a feed port and a positioning tube 2, and the other end of the limiting shell is provided with a discharge port and a positioning tube 1, one end of the positioning tube 2 is slidably connected with a slider, and the end of the slider close to the limiting shell is rotatably connected with a connecting block, one end of the connecting block is fixedly connected with a sliding rod, one end of the sliding rod passes through the limiting shell and extends to the inside of the positioning tube 1, both ends of the sliding rod are provided with docking bevel teeth, and the outer wall of the sliding rod located inside the limiting shell is fixedly connected with a push plate.

[0009] The present invention is further configured such that a spring connected to a second positioning tube is provided on one side of the slider, a second motor is provided on the top of the second positioning tube close to one end of the limiting shell, an output end of the second motor passes through the interior of the second positioning tube and is fixedly connected to a second bevel gear, and a first motor is provided on the top of the end of the first positioning tube away from the limiting shell, an output end of the first motor passes through the interior of the first positioning tube and is fixedly connected to a first bevel gear.

[0010] The present invention is further configured such that the feed in and out mechanism also includes a feed trough, which is fixedly connected to the feed port, and the bottom of the feed trough is fixedly connected to the main body. The feed trough is designed to be inclined to facilitate the automatic rolling and pushing of the steel pipe, and an electromagnet is provided on the top of one end of the limit shell close to the positioning tube.

[0011] The present invention is further configured such that support plates are provided on the top of the main body at both ends of the rotating frame, extension plates are provided at both ends of the rotating frame near the support plates, motor three is provided on the side of the support plate away from the extension plate, the output end of motor three passes through the support plate and is fixedly connected to the rotating frame, and a passive gear is fixedly connected to the side of the support plate close to the extension plate.

[0012] The present invention is further configured as follows: the clamping mechanism includes a docking seat fixedly mounted on the outer wall of the rotating frame near the mounting groove, clamping plates are symmetrically hinged on both sides of the docking seat, two sliding holes are provided at both ends of the rotating frame near the mounting groove, a sliding hole is provided on the outer wall of the extension plate at a position corresponding to the sliding hole two, a driving shaft is movably connected inside the mounting groove, an end portion of the driving shaft passes through the sliding hole two and the sliding hole one and extends to between the support plate and the extension plate, and a driven gear is fixedly connected to the end portion of the driving shaft, and a docking groove is provided at the bottom of the docking seat.

[0013] The present invention is further configured such that the clamping mechanism also includes a limiting cavity fixedly installed at a position near the mounting groove inside the rotating frame, an extrusion plate is slidably connected inside the limiting cavity, the top of the extrusion plate passes through the rotating frame and extends to both sides of the docking seat, a movable rod is slidably connected inside the limiting cavity and below the extrusion plate, pressure blocks 2 are arranged on both sides of the movable rod, a pressure block 1 is arranged at a position near the pressure block 2 at the bottom of the extrusion plate, the pressure block 2 is slidably connected to the pressure block 1, a telescopic rod is arranged at one end of the movable rod, and the other end of the telescopic rod is fixedly connected to the extension plate.

[0014] The present invention is further configured such that a positioning rod is provided in the cavity of the limiting shell near one end of the discharge port, and a baffle is rotatably connected to the circumferential outer surface of the positioning rod, and the lower section of the baffle facing the inside of the limiting shell is an inclined concave surface, which is used to automatically open when the steel pipe is pushed out, and automatically close by gravity after the steel pipe is completely pushed out.

[0015] Beneficial effects of a heat treatment device for annealing a steel pipe according to the present invention:

[0016] 1. Through the rotation of the rotating frame, combined with the friction between the rough surface of the driving shaft in the clamping mechanism and the steel pipe, the continuous rotation of the steel pipe during the heating process is achieved. This design effectively solves the problem of uneven heating caused by traditional static heating methods, ensuring that all parts of the steel pipe are heated evenly, thereby improving the consistency of the annealing effect and the final performance of the steel.

[0017] 2. The optimized heating mechanism design improves the heat transfer efficiency and reduces heat loss. At the same time, the feeding and discharging mechanism realizes the continuous feeding and discharging of steel pipes, avoiding the energy waste caused by intermittent heating. Overall, the device significantly reduces energy consumption, meets the environmental protection requirements of energy conservation and emission reduction, and helps to reduce production costs.

[0018] 3. The automated design of the feeding and discharging mechanism realizes the continuous feeding, heating and discharging process of steel pipes, greatly shortening the production cycle. The continuous rotation of the rotating frame ensures that multiple steel pipes can be annealed at the same time, meeting the needs of large-scale production.

[0019] 4. The present invention integrates multiple automatic control components, such as motors, electromagnets, etc., to achieve full automatic operation from feeding, heating to discharging. This not only reduces the labor intensity of workers, but also improves production efficiency and product quality stability, and reduces the impact of human factors on the production process.

[0020] 5. The overall device design is compact and reasonable, the various components cooperate well with each other, and the operation is simple. This compact structural design not only saves space resources, but also facilitates the maintenance and upkeep of the equipment. At the same time, the inclined design of the feed chute and the ingenious arrangement of the push plate, baffle and other components further enhance the practicality and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Figure 1 This is a three-dimensional structural diagram of a heat treatment device for annealing a steel pipe according to the present invention;

[0024] Figure 2 This is a separation diagram of a heat treatment device for annealing a steel pipe according to the present invention;

[0025] Figure 3 This is a separation diagram of a heating mechanism of a heat treatment device for annealing a steel pipe according to the present invention;

[0026] Figure 4 A cross-sectional view of a heating mechanism of a heat treatment device for annealing a steel pipe according to the present invention;

[0027] Figure 5 An exploded view of a clamping assembly of a heat treatment device for annealing a steel pipe according to the present invention;

[0028] Figure 6 It is an enlarged view of the feeding and discharging mechanism of a heat treatment device for annealing a steel pipe according to the present invention;

[0029] Figure 7 The invention discloses an exploded view of a feeding and discharging mechanism of a heat treatment device for annealing a steel pipe.

[0030] The figures are marked as follows: 1. Main body;

[0031] 2. Heating mechanism; 21. Heating chamber; 22. Rotating frame; 221. Extension plate; 2211. Slide hole 1; 222. Support plate; 223. Passive gear; 224. Driven gear; 225. Motor 3; 226. Slide hole 2; 227. Mounting slot; 228. Limiting chamber;

[0032] 23. Clamping mechanism; 231. Docking seat; 232. Docking groove; 233. Driving shaft; 234. Clamping plate; 235. Extrusion plate; 236. Pressing block 1; 237. Movable rod; 238. Telescopic rod; 239. Pressing block 2.

[0033] 3. Feeding and discharging mechanism; 31. Limiting shell; 311. Feeding port; 312. Discharging port; 313. Positioning rod; 314. Baffle; 315. Electromagnet;

[0034] 32. Positioning tube 1; 321. Motor 1; 322. Bevel gear 1;

[0035] 33. Positioning tube 2; 331. Sliding block; 332. Spring; 333. Motor 2; 334. Bevel gear 2;

[0036] 34. Feed chute; 35. Slide rod; 351. Docking bevel gear; 352. Connecting block; 353. Push plate. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other; the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a transmission connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements.

[0039] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 5 , Figure 6 A heat treatment device for annealing a steel pipe comprises a main body 1, a heating mechanism 2 and a feeding and discharging mechanism 3. The main body 1 is provided with a heating mechanism 2 on the top, and the feeding and discharging mechanism 3 is provided on the top of the heating mechanism 2. The heating mechanism 2 comprises a heating chamber 21, and an opening is provided on the top of the heating chamber 21. A rotating frame 22 is rotatably connected inside the heating mechanism 2. An installation groove 227 is provided on the outer surface of the rotating frame 22. A clamping mechanism 23 is provided inside the installation groove 227 for clamping and rotating the steel pipe to achieve uniform heating. The feeding and discharging mechanism 3 comprises a limiting shell 31 fixedly installed at the top opening of the heating chamber 21. The limiting shell 31 is provided at the top opening of the heating chamber 21. Cavities are provided at both ends of the positioning shell 31, a feed port 311 and a positioning tube 33 are provided at one end of the limiting shell 31, a discharge port 312 and a positioning tube 32 are provided at the other end of the limiting shell 31, a slider 331 is slidably connected to one end of the positioning tube 33, the slider 331 is rotatably connected to one end of the limiting shell 31 with a connecting block 352, one end of the connecting block 352 is fixedly connected to a sliding rod 35, one end of the sliding rod 35 passes through the limiting shell 31 and extends to the inside of the positioning tube 32, docking bevel teeth 351 are provided at both ends of the sliding rod 35, and a push plate 353 is fixedly connected to the outer wall of the sliding rod 35 located inside the limiting shell 31.

[0040] By adopting the above technical solution, when the rotating frame 22 drives the installation slot 227 to the high point, the telescopic rod 238 operates the clamping plate 234 to open, and the steel pipe is pushed into the heating chamber 21 and meets the push plate 353. The push plate 353 moves to the positioning rod 313 and stops. The motor drives the bevel gear to rotate, and the push plate 353 rotates 180 degrees and is positioned by the electromagnet 315, and then reset. The clamping plate 234 clamps the steel pipe, and the motor 225 drives the rotating frame 22 to rotate, driving the shaft 233 and the steel pipe to rotate by friction, and evenly heat. After the heating is completed, the push plate 353 pushes the steel pipe to the baffle 314, and the baffle 314 opens the steel pipe to discharge the material, and then the baffle 314 closes.

[0041] A spring 332 connected to the second positioning tube 33 is provided on one side of the slider 331. A motor 333 is provided on the top of the second positioning tube 33 near the limiting shell 31. The output end of the motor 333 passes through the interior of the second positioning tube 33 and is fixedly connected to the second bevel gear 334. A motor 321 is provided on the top of the end of the positioning tube 1 32 away from the limiting shell 31. The output end of the motor 321 passes through the interior of the first positioning tube 32 and is fixedly connected to the first bevel gear 322. The feeding and discharging mechanism 3 also includes a feeding trough 34, which is fixed to the feeding port 311. The bottom of the feed trough 34 is fixedly connected to the main body 1. The feed trough 34 is designed to be inclined, which is convenient for the steel pipe to roll down and push automatically. An electromagnet 315 is arranged on the top of the end of the limiting shell 31 close to the positioning tube 32. A positioning rod 313 is arranged in the cavity of the limiting shell 31 close to the end of the discharge port 312. The outer surface of the circumference of the positioning rod 313 is rotatably connected with a baffle 314. The lower section of the baffle 314 facing the inside of the limiting shell 31 is an inclined concave surface, which is used to automatically open when the steel pipe is pushed out, and automatically close by gravity after the steel pipe is completely pushed out.

[0042] By adopting the above technical solution, the feeding and discharging mechanism 3 includes a limiting shell 31, with cavities at both ends, a feed port 311 at one end connected to the positioning tube 2 33, and a discharge port 312 at the other end connected to the discharging mechanism, and a positioning tube 1 32 is set on the top. The slider 331 slides in the positioning tube 2 33. The motor 2 333 drives the bevel gear 2 334, and the motor 1 321 drives the bevel gear 1 322. The movement of the slide bar 35 is controlled by the bevel gear meshing, and the push plate 353 switches the feed port 311. The positioning rod 313 is provided with a slide bar 35 sliding over, and the baffle plate 314 controls the discharging. . The feed trough 34 is designed to be inclined, preheat the steel pipe, and automatically feed with the pushing mechanism.

[0043] A support plate 222 is provided at the top of the main body 1 at both ends of the rotating frame 22, an extension plate 221 is provided at the positions near the support plate 222 at both ends of the rotating frame 22, a motor three 225 is provided on the side of the support plate 222 away from the extension plate 221, the output end of the motor three 225 passes through the support plate 222 and is fixedly connected to the rotating frame 22, a passive gear 223 is fixedly connected to the side of the support plate 222 close to the extension plate 221, the clamping mechanism 23 includes a docking seat 231 fixedly installed on the outer wall of the rotating frame 22 near the mounting groove 227, and clamping plates 234 are symmetrically hinged on both sides of the docking seat 231, a sliding hole 226 is opened at both ends of the rotating frame 22 near the mounting groove 227, a sliding hole 1 2211 is opened on the outer wall of the extension plate 221 at a position corresponding to the sliding hole 226, and a driving shaft 233 is movably connected inside the mounting groove 227, and the end of the driving shaft 233 passes through the sliding hole 227 26. The sliding hole 2211 extends between the support plate 222 and the extension plate 221, and the end of the driving shaft 233 is fixedly connected to the driven gear 224. A docking groove 232 is provided at the bottom of the docking seat 231. The clamping mechanism 23 also includes a limiting cavity 228 fixedly installed at a position near the mounting groove 227 inside the rotating frame 22. An extrusion plate 235 is slidably connected inside the limiting cavity 228. The top of the extrusion plate 235 passes through the rotating frame 22 and extends to both sides of the docking seat 231. A movable rod 237 is slidably connected below the extrusion plate 235 inside the limiting cavity 228. Pressing blocks 239 are arranged on both sides of the movable rod 237. A pressing block 1 236 is arranged at a position near the pressing block 239 at the bottom of the extrusion plate 235. The pressing block 239 is slidably connected to the pressing block 1 236. A telescopic rod 238 is arranged at one end of the movable rod 237, and the other end of the telescopic rod 238 is fixedly connected to the extension plate 221.

[0044] By adopting the above technical solution, a clamping mechanism 23 is provided in the installation groove 227 and the limiting cavity 228, and the two ends of the rotating frame 22 are provided with extension plates 221 and a second sliding hole 226. A sliding hole 1 2211 is opened at a corresponding position on the outer wall of the extension plate 221, and a motor 3 225 is provided on the support plate 222 to drive the rotating frame 22, and it is provided with a passive gear 223. The clamping mechanism 23 includes a docking seat 231, a driving shaft 233, and a clamping plate 234. The driven gear 224 cooperates with the passive gear 223 to realize the lifting and lowering of the driving shaft 233 and the clamping plate 234. It also includes an extrusion plate 235 and a movable rod 237, and the clamping action is completed by the docking and sliding of the pressure block 1 236 and the pressure block 2 239. The design ensures that the steel pipe is stably clamped during rotation and heating.

[0045] When the present invention is in use, a heating mechanism 2 is arranged on the top of the main body 1, and a material feeding and discharging mechanism 3 is arranged on the top of the heating mechanism 2. The heating mechanism 2 includes a heating chamber 21, and an opening is arranged on the top of the heating chamber 21. The material feeding and discharging mechanism 3 is arranged at the opening.

[0046] The feeding and discharging mechanism 3 includes a limiting shell 31 fixedly installed at the top opening of the heating chamber 21, cavities are arranged inside the two ends of the limiting shell 31, a feeding port 311 is opened at one end of the limiting shell 31, a positioning tube 2 33 is arranged at the end of the limiting shell 31 above the feeding port 311, and a discharge port 312 is opened at the other end of the limiting shell 31 at a position flush with the feeding port 311, and the discharge port 312 is used to connect the discharging mechanism, a positioning tube 1 32 is arranged at the end of the limiting shell 31 above the discharge port 312, a slider 331 is slidably connected inside the positioning tube 2 33, and a side of the slider 331 is provided with a positioning tube 2 The spring 332 connected to 33, the other side of the slider 331 is rotatably connected to the slide bar 35, one end of the slide bar 35 passes through the limiting shell 31 and extends to the inside of the positioning tube 1 32, and both ends of the slide bar 35 are provided with docking bevel teeth 351, and the top of the end of the positioning tube 2 33 close to the limiting shell 31 is provided with a motor 2 333, the output end of the motor 2 333 passes through the inside of the positioning tube 2 33 and is fixedly connected with the bevel gear 2 334, and the top of the end of the positioning tube 1 32 away from the limiting shell 31 is provided with a motor 1 321, the output end of the motor 1 321 passes through the inside of the positioning tube 1 32 and is fixedly connected with the bevel gear 1 322, and the slide bar 35 A push plate 353 is fixedly connected to the outer wall. When the sliding rod 35 is in a normal state, its main part is located inside the positioning tube 2 33, and drives the push plate 353 to be located in the cavity of the limiting shell 31 near one end of the positioning tube 2 33, and is in a position to cover the feed port 311. A positioning rod 313 is provided in the cavity of the limiting shell 31 near one end of the positioning tube 1 32, and is located directly above the discharge port 312. The sliding rod 35 penetrates the positioning rod 313 and is slidably connected. A baffle 314 is rotatably connected to the outer wall of the positioning rod 313. The baffle 314 is provided with two pieces. The lower section of the baffle 314 on one side facing the inside of the limiting shell 31 is an inclined concave surface. An electromagnet 315 is provided on the top of the cavity of the limiting shell 31 near one end of the positioning tube 1 32.

[0047] A feed trough 34 is provided at the feed port 311. The feed trough 34 is used to place steel pipes waiting to be heated and can also preheat the steel pipes. The feed trough 34 is inclined in design. The bottom of the feed trough 34 is fixedly connected to the main body 1. A pushing mechanism is provided at one end of the feed trough 34. The inclined design is used for the steel pipes to automatically roll down to the lower part of the feed trough 34, which is convenient for the pushing mechanism to push the feed.

[0048] A rotating frame 22 is rotatably connected to the central position of the heating chamber 21, and mounting grooves 227 are evenly provided on the circumferential outer surface of the rotating frame 22. A limiting cavity 228 is provided near the mounting groove 227 inside the rotating frame 22, and a clamping mechanism 23 is provided in the mounting groove 227 and the limiting cavity 228. Extension plates 221 are provided at both ends of the rotating frame 22, and sliding holes 226 are provided at both ends of the rotating frame 22 near the mounting groove 227. A sliding hole 1 2211 is provided on the outer wall of the extension plate 221 at a position corresponding to the sliding hole 226. A support plate 222 is provided at the top of the main body 1 near the extension plate 221, and a motor 3 225 is provided on the side of the support plate 222 away from the extension plate 221. The output end of the motor 3 225 passes through the support plate 222 and is fixedly connected to the rotating frame 22, and a passive gear 223 is provided on the side of the support plate 222 near the extension plate 221.

[0049] The clamping mechanism 23 includes a docking seat 231 fixedly mounted on the outer wall of the rotating frame 22 near the mounting groove 227, and a driving shaft 233 movably mounted inside the docking groove 232. A docking groove 232 is provided on the top of the docking seat 231, and the docking groove 232 is communicated with the mounting groove 227. Clamping plates 234 are symmetrically hinged on both sides of the docking seat 231. Both ends of the driving shaft 233 pass through the second sliding hole 226 and the first sliding hole 2211 and extend to the middle position of the support plate 222 and the extension plate 221. At the same time, a driven gear 224 is fixedly connected. The height of the second sliding hole 226 and the first sliding hole 2211 is greater than the diameter of the end of the driving shaft 233. The top of the passive gear 223 is provided with a A groove is arranged, and when the driven gear 224 is meshed with the surface teeth of the driven gear 223, the height of the end of the driving shaft 233 is located at the highest point of the second sliding hole 226 and the first sliding hole 2211, and the part of the driving shaft 233 located inside the installation groove 227 is also at the highest point. When the rotating frame 22 drives one of the installation grooves 227 and the components inside it to move to the highest point, the driven gear 224 at the end of the driving shaft 233 is located inside the groove at the top of the driven gear 223. At this time, the end of the driving shaft 233 is located at the lowest point inside the second sliding hole 226 and the first sliding hole 2211, and the part of the driving shaft 233 located inside the installation groove 227 is also at the lowest point;

[0050] The clamping mechanism 23 also includes an extrusion plate 235 slidably installed inside the mounting groove 227. The top of the extrusion plate 235 passes through the rotating frame 22 and extends to both sides of the docking seat 231. A movable rod 237 is also slidably connected inside the mounting groove 227. A second pressure block 239 is provided on both sides of the movable rod 237. The bottom of the movable rod 237 is connected to the mounting groove 227 through a clamping block, so that the movable rod 237 can only move horizontally along the inner wall of the mounting groove 227. A pressure block 1 236 is provided at the bottom of the extrusion plate 235. The pressure block 1 236 is docked with the pressure block 239 and the two are slidably connected.

[0051] When the rotating frame 22 is in use and drives one of the mounting slots 227 and the components inside it to move to the highest point, its telescopic rod 238 will pull the movable rod 237, and the movable rod 237 will drive the pressure block 239 to press the pressure block 1 236 downward, so that the extrusion plate 235 will fall. When the extrusion plate 235 falls, it loses the extrusion on the clamping plate 234. After losing the extrusion, the clamping plate 234 will open due to gravity, and the steel pipe will be placed inside the feed slot 34, and then pushed into the feed port 311 through the pushing mechanism. When the steel pipe is pushed into the feed port 311, it will encounter the push plate 353 blocked here, and then the steel pipe continues to move, thereby pushing the push plate 353 to move along the opening at the top of the heating chamber 21. The movement of the push plate 353 will drive the sliding rod 35 to move, and the movement of the sliding rod 35 will drive the slider 331 to move with the connecting bevel gear 351, and the movement of the slider 331 will squeeze the spring 332. After the steel pipe enters the heating chamber 21, it will fall onto the docking seat 231 at the highest point, and the pushing mechanism continues to push the steel pipe, and it keeps pushing the steel pipe to drive the push plate 353 to move to the positioning rod 313 and stop after it cannot move. Then the pushing mechanism is reset. At this time, the docking cone teeth 351 at both ends of the slide bar 35 will respectively dock with the cone teeth 1 322 and the cone teeth 2 334, and then the motor 1 321 and the motor 2 333 respectively drive the cone teeth 1 322 and the cone teeth 2 334 to rotate, thereby driving the slide bar 35 and the push plate 353 to rotate 180 degrees through the docking cone teeth 351. When the push plate 353 rotates 180 degrees, it will be positioned by the electromagnet 315, and then the spring 332 will push the slider 331 to pull the slide bar 35 to drive the push plate 353. When it is inside the initial cavity, due to gravity, the push plate 353 will rotate and fall back to its original position to cover the feed port 311 again.

[0052] When the pushing mechanism is reset, the telescopic rod 238 pushes the movable rod 237, and the movable rod 237 drives the pressure block 239 to squeeze the pressure block 1 236 upward, and the squeezing plate 235 is moved upward by squeezing the pressure block 1 236. The squeezing plate 235 moves up to squeeze the clamping plate 234, and the steel pipe is clamped by squeezing the clamping plate 234. Then the motor 3 225 drives the rotating frame 22 to rotate. When the rotating frame 22 rotates, the driving shaft 233 and the driven gear 224 will be driven to move. When the driving shaft 233 and the driven gear 224 come out of the groove at the top of the driven gear 223, they will mesh with the teeth on the surface of the driven gear 223, and at the same time, the part of the shaft 233 located inside the installation groove 227 will also be at the highest point, so that it fits with the steel pipe. The outer surface of the part of the circumference of the driving shaft 233 located inside the installation groove 227 is a rough surface. The driving shaft 233 drives the steel pipe to rotate through the friction of the rough surface, so that the steel pipe is heated evenly.

[0053] When the steel pipe rotates one circle with the rotating frame 22 and reaches the highest point, it drives the shaft 233 to fall, the clamping plate 234 opens, and then the steel pipe is pushed into the feed port 311 through the pushing mechanism. When the steel pipe enters the feed port 311, it will push the push plate 353 to move along the opening at the top of the heating chamber 21. The movement of the push plate 353 will push the steel pipe after heating to move. When the heated thick steel pipe moves to the baffle 314, the baffle 314 will be opened by squeezing the concave surface of the baffle 314. Then the steel pipe enters the discharge port 312 through the opened mouth of the baffle 314 and then goes out. When the steel pipe is completely out, the baffle 314 will close again due to gravity, and the push plate 353 and other components will repeat the previous steps.

[0054] By rotating the rotating frame 22 and rubbing the steel pipe with the rough surface of the driving shaft 233 in the clamping mechanism 23, continuous self-rotation heating is achieved, the problem of uneven heating is solved, and the consistency of annealing effect and steel performance are improved. The optimized heating mechanism 2 improves the heat transfer efficiency and reduces heat loss; the feeding and discharging mechanism 3 realizes continuous feeding and discharging, reduces energy consumption, meets environmental protection requirements, and reduces production costs. The automated design shortens the production cycle, supports the simultaneous annealing of multiple steel pipes, and meets large-scale production. Integrated motors, electromagnets 315 and other automated components are fully automated to reduce labor intensity and improve efficiency and quality stability. The device is compactly designed, easy to operate, space-saving, and easy to maintain. The inclined feed trough 34 and clever component layout enhance practicality and reliability.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat treatment device for annealing a steel pipe, comprising a main body (1), a heating mechanism (2) and a feeding and discharging mechanism (3), characterized in that: A heating mechanism (2) is arranged on the top of the main body (1), and a material feeding and discharging mechanism (3) is arranged on the top of the heating mechanism (2); The heating mechanism (2) comprises a heating chamber (21), the top of the heating chamber (21) is provided with an opening, a rotating frame (22) is rotatably connected inside the heating mechanism (2), a mounting groove (227) is provided on the circumferential outer surface of the rotating frame (22), and a clamping mechanism (23) is provided inside the mounting groove (227) for clamping and rotating the steel pipe to achieve uniform heating; The feeding and discharging mechanism (3) comprises a limiting shell (31) fixedly mounted at the top opening of the heating chamber (21), cavities being arranged inside the two ends of the limiting shell (31), a feeding port (311) and a second positioning tube (33) being arranged at one end of the limiting shell (31), a discharging port (312) and a first positioning tube (32) being arranged at the other end of the limiting shell (31), a slider (331) being slidably connected inside the second positioning tube (33) at one end, a connecting block (352) being rotatably connected to the end of the slider (331) close to the limiting shell (31), a sliding rod (35) being fixedly connected to one end of the connecting block (352), one end of the sliding rod (35) penetrating the limiting shell (31) and extending to the inside of the first positioning tube (32), a butt-jointing bevel gear (351) being arranged at both ends of the sliding rod (35), and a push plate (353) being fixedly connected to the outer wall of the sliding rod (35) located inside the limiting shell (31).

2. A heat treatment device for annealing a steel pipe according to claim 1, characterized in that: A spring (332) connected to the second positioning tube (33) is provided on one side of the slider (331); a second motor (333) is provided at the top of the second positioning tube (33) close to one end of the limiting shell (31); an output end of the second motor (333) passes through the interior of the second positioning tube (33) and is fixedly connected to the second bevel gear (334); a first motor (321) is provided at the top of the end of the first positioning tube (32) away from the limiting shell (31); an output end of the first motor (321) passes through the interior of the first positioning tube (32) and is fixedly connected to the first bevel gear (322).

3. A heat treatment device for annealing a steel pipe according to claim 1, characterized in that: The feeding and discharging mechanism (3) further comprises a feeding trough (34), wherein the feeding trough (34) is fixedly connected to the feeding port (311), and the bottom of the feeding trough (34) is fixedly connected to the main body (1). The feeding trough (34) is designed to be inclined so as to facilitate the automatic rolling and pushing of the steel pipe. An electromagnet (315) is arranged at the top of one end of the limiting shell (31) close to the positioning tube (32).

4. A heat treatment device for annealing a steel pipe according to claim 1, characterized in that: Support plates (222) are arranged on the top of the main body (1) at positions at both ends of the rotating frame (22); extension plates (221) are arranged at positions at both ends of the rotating frame (22) close to the support plates (222); a motor three (225) is arranged on a side of the support plate (222) away from the extension plate (221); an output end of the motor three (225) passes through the support plate (222) and is fixedly connected to the rotating frame (22); and a passive gear (223) is fixedly connected to a side of the support plate (222) close to the extension plate (221).

5. A heat treatment device for annealing a steel pipe according to claim 4, characterized in that: The clamping mechanism (23) comprises a docking seat (231) fixedly mounted on the outer wall of the rotating frame (22) near the mounting groove (227); clamping plates (234) are symmetrically hinged on both sides of the docking seat (231); two sliding holes (226) are provided at both ends of the rotating frame (22) near the mounting groove (227); a sliding hole (2211) is provided on the outer wall of the extension plate (221) at a position corresponding to the sliding hole (226); a driving shaft (233) is movably connected inside the mounting groove (227); an end of the driving shaft (233) passes through the sliding hole (226) and the sliding hole (2211) and extends between the support plate (222) and the extension plate (221); and a driven gear (224) is fixedly connected to the end of the driving shaft (233); and a docking groove (232) is provided at the bottom of the docking seat (231).

6. A heat treatment device for annealing a steel pipe according to claim 5, characterized in that: The clamping mechanism (23) further comprises a limiting cavity (228) fixedly installed at a position near the mounting groove (227) inside the rotating frame (22); an extrusion plate (235) is slidably connected inside the limiting cavity (228); the top end of the extrusion plate (235) passes through the rotating frame (22) and extends to both sides of the docking seat (231); a movable rod (237) is slidably connected inside the limiting cavity (228) and below the extrusion plate (235); a second pressing block (239) is arranged on both sides of the movable rod (237); a first pressing block (236) is arranged at a position near the second pressing block (239) at the bottom of the extrusion plate (235); the second pressing block (239) is slidably connected to the first pressing block (236); a telescopic rod (238) is arranged at one end of the movable rod (237); the other end of the telescopic rod (238) is fixedly connected to the extension plate (221).

7. The heat treatment device for annealing a steel pipe according to claim 1, characterized in that: A positioning rod (313) is provided in the cavity of one end of the limiting shell (31) close to the discharge port (312); a baffle (314) is rotatably connected to the circumferential outer surface of the positioning rod (313); a lower section of the baffle (314) facing the inside of the limiting shell (31) is an inclined concave surface, which is used to automatically open when the steel pipe is pushed out, and automatically close by gravity after the steel pipe is completely pushed out.

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