Claw sleeve type heat treatment device based on pipe diameter self-adaptive adjustment

Abstract

The claw sleeve type heat treatment device comprises a supporting base, a lower claw sleeve set is arranged in the center of the top of the supporting base, portal frames are erected on the two sides of the lower claw sleeve set, an upper claw sleeve set located above the lower claw sleeve set is arranged on the tops of the portal frames, and traction guide rails are symmetrically arranged at the two ends of the supporting base; by replacing the matched pipe conveying bracket and the adjustable inner supporting claw clamp, pipe fittings with different pipe diameters are flexibly adapted, accurate clamping and stable supporting are achieved, a heat insulation curtain, a synchronous heat insulation ring, an exhaust fan and an adjusting valve combination can be adopted, heat overflow is effectively prevented, uniform distribution of heat is promoted, local overheating of the pipe fittings is avoided, the heat utilization rate is increased, and the service life of the pipe fittings is prolonged. And a temporary closed space is formed by the ring frame, the synchronous heat insulation ring and the upper and lower semi-arc claws, a targeted heating environment is provided for the pipe fitting, and the heat treatment quality and effect are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of pipe heat treatment, in particular to a claw sleeve type heat treatment device based on self-adaptive adjustment of pipe diameter. Background Art

[0002] In industrial production, heat treatment of pipe fittings is a key process. Traditional heat treatment equipment is often a general-purpose equipment designed for a specific pipe diameter range, or requires frequent manual adjustments to adapt to the treatment of pipe fittings with different diameters.

[0003] However, pipes of different diameters have different performance requirements in practical applications, which places strict demands on the accuracy of heat treatment. In the aerospace field, small-diameter pipes are often used in hydraulic systems or fuel delivery systems. The microstructure and performance of the materials are crucial to the reliability of the pipes. Precise heat treatment can ensure that the strength, toughness, corrosion resistance and other properties of the pipes meet higher standards.

[0004] Traditional pipe heat treatment technology often adopts open heating methods, such as flame heating, resistance heating, etc. These methods are difficult to ensure that all parts of the pipe are heated evenly, resulting in inconsistent heat treatment effects and affecting the performance and quality of the pipe. Due to uneven heating, traditional heat treatment technology requires longer heating time and higher energy consumption to achieve the expected heat treatment effect, which not only increases production costs, but also creates unnecessary burdens on the environment.

[0005] In conjunction with the above content, it should be explained that: Chinese patent with announcement number CN219010391U discloses a metal pipe heat treatment device, which places the pipe in a heating chamber for heat treatment. However, during actual use, the temperature inside the heating chamber is relatively dispersed, resulting in pipes of different diameters being sent to the heating chamber for heat treatment. The overall efficiency is low, and it is easy to uniformly heat treat the rest of the pipe. There is a lack of high-precision concentration of the heat treatment area and centralized control of heat.

[0006] In view of the above-mentioned technical defects, a solution is now proposed. Summary of the invention

[0007] The object of the present invention is to provide a claw sleeve type heat treatment device based on adaptive adjustment of pipe diameter to solve the problems raised.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a claw sleeve type heat treatment device based on adaptive adjustment of pipe diameter, comprising a support base, a lower claw sleeve group is arranged at the center of the top of the support base, a gantry is arranged on both sides of the lower claw sleeve group, an upper claw sleeve group located above the lower claw sleeve group is arranged on the top of the gantry, and traction guide rails are symmetrically arranged at both ends of the support base, the lower claw sleeve group includes a fixed support and a lower semi-arc claw, and a heater and an inner claw clamp are arranged on the inner wall of the lower semi-arc claw;

[0009] A pipe transport guide rail is arranged at one end of the traction guide rail away from the supporting base, a ring frame is arranged on the top of the traction guide rail, a synchronous heat insulation ring is arranged on the outer wall of one end of the ring frame close to the lower claw sleeve group, a rotating ring and an extrusion arc sheet are arranged inside the ring frame, and a traction arc sheet and a heat-insulating elastic cloth are arranged inside the synchronous heat insulation ring.

[0010] Furthermore, a regulating valve is provided on the outer wall of the bottom of the lower semi-arc claw, a rotary cylinder 1 is provided on the side section of the bottom of the lower semi-arc claw, a jet outlet is provided in a recessed manner on the inner wall surface of the lower semi-arc claw above the rotary cylinder 1, and the heater has an arc-shaped structure and is laid in the middle of the inner wall of the lower semi-arc claw.

[0011] Furthermore, the inner claw clamp is symmetrically arranged on the inner walls at both ends of the lower semi-arc claw, and a rotary cylinder 2 close to the inner claw clamp is provided on the claw body of the lower semi-arc claw. An inner connecting rod is sleeved on the surface of the rotary cylinder 2, and a rotary cylinder 3 is provided between the inner connecting rod and the inner claw clamp.

[0012] Furthermore, the upper claw set includes an exhaust fan base, an exhaust fan is embedded inside the exhaust fan base, and the bottom wall of the exhaust fan base is hinged with multiple groups of upper semi-arc claws symmetrical to the lower semi-arc claws. An air exhaust port is arranged on the top inner wall of the upper semi-arc claws, and a curtain cover is arranged on the outer side wall of the upper semi-arc claws.

[0013] Furthermore, a heat-insulating curtain is arranged inside the curtain cover, a propulsion cylinder connected to the heat-insulating curtain is arranged on the inner wall of the curtain cover end face, a lifting cylinder is symmetrically embedded in the inner wall of the gantry, a moving beam connected to the lifting cylinder is arranged between the gantries, and the moving beam is socketed with the exhaust fan seat.

[0014] Furthermore, a limiting guide block is slidably sleeved on the middle part of the traction guide rail, a Y-shaped frame connected to the ring frame is arranged on the top of the limiting guide block, and a servo motor is arranged on the outer wall of one side of the Y-shaped frame, the rotating ring is sleeved on the outer side of the inner wall of the ring frame, and the rotating ring is transmission-connected to the servo motor, and the ring frame is designed with a concentric circle structure.

[0015] Furthermore, a limiting ring is sleeved inside the rotating ring and close to the inner side of the inner wall of the ring frame, and an arc-shaped swing arm connected to the extrusion arc sheet is hinged on the surface of the rotating ring. A limiting column is slidably sleeved on the middle part of the arc-shaped swing arm, and the limiting column is slidably sleeved on the limiting ring.

[0016] Furthermore, an arc-shaped rocker arm 2 hinged to a rotating ring is provided on the inner wall of the synchronous heat insulation ring, a limiting ring 2 installed side by side with the limiting ring 1 is provided on the inner wall of the synchronous heat insulation ring, and a limiting column 2 slidably sleeved with the limiting ring 2 is provided in the middle of the arc-shaped rocker arm 2, the bottom of the arc-shaped rocker arm 2 is hinged to the traction arc plate, and a storage groove is provided on the inner wall of the synchronous heat insulation ring on the side close to the lower claw sleeve group, the thermal insulation elastic cloth is limitedly installed inside the storage groove, and the bottom of the thermal insulation elastic cloth is connected to the traction arc plate.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention can flexibly adapt to pipes of different diameters by replacing the matching pipe transport bracket and the adjustable inner claw clamp. The synergistic effect of the inner claw clamp and the upper and lower semi-arc claws realizes the precise calibration clamping and stable support of the heat treatment area of ​​the pipe fitting, ensuring the smooth progress of the heat treatment process. The heat insulation curtain and synchronous heat insulation ring design are adopted to effectively prevent the overflow of heat during the heat treatment process and improve the heat utilization rate. At the same time, the combined use of the exhaust fan and the regulating valve promotes the uniform distribution of heat and avoids local overheating of the pipe surface.

[0019] 2. The present invention realizes precise control of components such as rotating rings and arc-shaped rocker arms through the coordinated use of components such as servo motors, couplings and adapters, thereby forming an auxiliary centering and clamping system for the outer side of the pipe during heat treatment, simplifying the operation process and improving work efficiency. The temporary closed space composed of the ring frame, synchronous heat insulation ring and upper and lower semi-arc claws is also used to provide a small-range targeted heating environment for the pipe, thereby ensuring the quality and effect of the heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the lower claw set and the supporting base of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the lower claw set of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the gantry and the upper claw set of the present invention;

[0025] Figure 5It is a schematic diagram of the structure of the traction guide rail of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the ring frame of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the arc-shaped swing rod 1 of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the synchronous heat insulation ring of the present invention.

[0029] Reference numerals: 1, support base; 2, gantry; 201, moving beam; 3, lower claw set; 301, fixed support; 302, lower half arc claw; 303, heater; 304, inner claw clamp; 305, jet nozzle; 306, rotary cylinder 1; 307, regulating valve; 308, rotary cylinder 2; 309, inner connecting rod; 310, rotary cylinder 3; 4, traction guide rail; 401, limit guide block; 402, servo motor; 403 , ring frame; 404, arc-shaped swing rod one; 405, rotating ring; 406, limiting ring one; 407, limiting column one; 408, extrusion arc piece; 5, transportation guide rail; 6, upper claw set; 601, exhaust fan base; 602, upper arc claw; 603, exhaust port; 604, curtain cover; 605, thermal insulation curtain; 7, synchronous thermal insulation ring; 701, arc-shaped swing rod two; 702, limiting ring two; 703, traction arc piece; 704, thermal insulation elastic cloth. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0031] Example 1: Please refer to Figure 1 - Figure 8 As shown, this embodiment is a claw sleeve type heat treatment device based on pipe diameter adaptive adjustment, comprising a support base 1, a lower claw sleeve group 3 is arranged at the top center of the support base 1, a gantry 2 is arranged on both sides of the lower claw sleeve group 3, an upper claw sleeve group 6 located above the lower claw sleeve group 3 is arranged on the top of the gantry 2, and traction guide rails 4 are symmetrically arranged at both ends of the support base 1;

[0032] The lower claw set 3 includes a fixed support 301 and a lower semi-arc claw 302. A heater 303 and an inner claw clamp 304 are provided on the inner wall of the lower semi-arc claw 302. The heat treatment device is installed in a heating chamber in a closed environment. According to the pipe diameter of the required processed pipe fittings, the suitable pipe transport bracket is replaced and installed on the pipe transport guide rail 5 for lifting and transporting the pipe fittings.

[0033] A regulating valve 307 is provided on the outer wall of the bottom of the lower semi-arc claw 302, a rotary cylinder 306 is provided on the side section of the bottom of the lower semi-arc claw 302, and a jet port 305 is provided in a concave shape on the inner wall surface of the lower semi-arc claw 302 above the rotary cylinder 306. The heater 303 is an arc-shaped structure and is laid in the middle of the inner wall of the lower semi-arc claw 302;

[0034] When the pipe fittings are conveyed through the two sets of ring frames 403 and the part of the pipe fittings that needs heat treatment is moved above the lower arc claw 302, the lifting cylinder in the gantry 2 drives the moving beam 201 to slide down, and the moving beam 201 drives the upper arc claw 602 to slide down through the exhaust fan base 601. The upper arc claw 602 slides down until it contacts the lower arc claw 302, forming a circular claw sleeve type limiter, and the propulsion cylinder in the curtain sleeve 604 drives the insulation curtain 605 to slide down. The bottom of the insulation curtain 605 covers the outside of the lower arc, which is used to prevent the connection gap between the upper arc claw 602 and the lower arc claw 302 after the diameter of the pipe fitting is adjusted, thereby reducing the overflow of heat from the heat treatment of the pipe fitting between the lower arc claw 302 and the upper arc claw 602.

[0035] The inner claw clamps 304 are symmetrically arranged on the inner walls at both ends of the lower semi-arc claw 302. The claw body of the lower semi-arc claw 302 is provided with a second rotary cylinder 308 close to the inner claw clamp 304. The surface of the second rotary cylinder 308 is sleeved with an inner connecting rod 309. A third rotary cylinder 310 is provided between the inner connecting rod 309 and the inner claw clamp 304.

[0036] After the pipe is placed between the upper semi-arc claw 602 and the lower semi-arc claw 302, the rotary cylinder 2 308 drives the inner connecting rod 309 to rotate. The inner connecting rod 309 is a telescopic rod. The inner connecting rod 309 rotates synchronously to drive the inner claw clamp 304 close to the pipe. The inner connecting rod 309 is stretched by the traction force, and the inner connecting rod 309 is rotatably sleeved with the outer shell of the rotary cylinder 3 310. The inner claw clamp 304 is composed of two kinds of clips hinged with the rotary cylinder 3 310 to form a whole.

[0037] According to the pipe diameter clamping requirement of the pipe fitting, after the inner claw clamp 304 is pushed by the inner connecting rod 309 to abut against the outer wall of the pipe fitting, the inner claw clamp 304 is further adjusted by the rotary cylinder 310 to clamp the outer wall of the pipe fitting, and then combined with the multiple groups of inner claw clamps 304 on the lower half arc claw 302 and the upper half arc claw 602 to work together to limit the pipe fitting in the middle area between the upper half arc claw 602 and the lower half arc claw 302. It should be noted that the inner claw clamp 304 can be replaced continuously according to the installation requirements and the actual clamping requirements of the pipe fitting, and is not limited to the style shown in the figure.

[0038] The upper claw set 6 includes an exhaust fan base 601, in which an exhaust fan is embedded, and a plurality of groups of upper semi-arc claws 602 symmetrical to the lower semi-arc claws 302 are hinged on the bottom wall of the exhaust fan base 601, and an air suction port 603 is arranged on the inner wall at the top of the upper semi-arc claws 602, and a curtain cover 604 is arranged on the outer wall of the upper semi-arc claws 602, and a heat insulation curtain 605 is arranged inside the curtain cover 604, and a propulsion cylinder connected to the heat insulation curtain 605 is arranged on the inner wall of the end face of the curtain cover 604, and a lifting cylinder is symmetrically embedded in the inner wall of the gantry 2, and a moving beam 201 connected to the lifting cylinder is arranged between the gantries 2, and the moving beam 201 is sleeved with the exhaust fan base 601.

[0039] After waiting for the ring frame 403 and the synchronous heat insulation ring 7 to cooperate with the upper arc claw 602 and the lower arc claw 302 to form a temporary closed space, the heater 303 is started, and the heater 303 generates high heat in a small range, which is used to perform targeted heating treatment on the surface of the pipe in a small range;

[0040] During this period, excess heat gathers at the top of the upper arc claw 602, and the exhaust fan in the exhaust fan base 601 is connected to the exhaust port 603 and the regulating valve 307 through a pipeline, thereby sucking the high-temperature air gathered at the top of the upper arc claw 602 and transporting it to the regulating valve 307. The regulating valve 307 guides the high-temperature airflow to be ejected along the jet port 305 to make up for the heating gap between the lower arc claws 302 in the connection area affected by the rotary cylinder 306, and at the same time promotes the flow of high-temperature heat between the upper arc claw 602 and the lower arc claw 302 to avoid local retention of high temperature and cause local overheating of the pipe surface.

[0041] Embodiment 2: This embodiment is a claw sleeve type heat treatment device based on adaptive adjustment of pipe diameter, including a traction guide rail 4 with a pipe transport guide rail 5 arranged at one end away from the support base 1, a ring frame 403 is arranged on the top of the traction guide rail 4, and a synchronous insulation ring 7 is arranged on the outer wall of the end of the ring frame 403 close to the lower claw sleeve group 3, a rotating ring 405 and an extrusion arc sheet 408 are arranged inside the ring frame 403, and a traction arc sheet 703 and an insulating elastic cloth 704 are arranged inside the synchronous insulation ring 7.

[0042] A limiting guide block 401 is slidably sleeved in the middle of the traction guide rail 4, a Y-shaped frame connected to the ring frame 403 is arranged on the top of the limiting guide block 401, and a servo motor 402 is arranged on the outer wall of one side of the Y-shaped frame, a rotating ring 405 is sleeved on the outer side of the inner wall of the ring frame 403, and the rotating ring 405 is transmission connected to the servo motor 402, the ring frame 403 is designed in a concentric circle structure, a limiting ring 406 close to the inner side of the inner wall of the ring frame 403 is sleeved inside the rotating ring 405, an arc-shaped swing rod 404 connected to an extrusion arc sheet 408 is hinged on the surface of the rotating ring 405, a limiting column 407 is slidably sleeved in the middle of the arc-shaped swing rod 404, and the limiting column 407 is slidably sleeved with the limiting ring 406.

[0043] The servo motor 402 is started, and the servo motor 402 drives the rotating ring 405 to rotate along the inside of the ring frame 403 through the coupling and the adapter. The rotating ring 405 drives the top of the arc-shaped swing rod 404 to rotate along the inner wall of the ring frame 403. When the top of the arc-shaped swing rod 404 is pulled to rotate, the middle part of the arc-shaped swing rod 404 is affected by the limiting column 407. The local trajectory of the limiting ring 406 is used as the deflection point, and the limiting column 407 is used as the rotation center axis. The arc-shaped swing rod 404 pushes the limiting rod 1 to move along the limiting ring, and the limiting rod 1 also slides along the inner groove of the middle part of the arc-shaped swing rod 404.

[0044] At the same time, the arc swing arm 404 rotates with the limit rod 1, thereby driving the extruded arc piece 408 to move closer to the center of the ring frame 403. When the extruded arc piece 408 contacts the surface of the pipe, the extruded arc piece 408 takes the hinge point of the arc swing arm 404 as the central axis, adaptively adjusts according to the arc shape of the pipe surface, and adheres to the surface of the pipe. It should be noted that the adapter includes traditional mechanical connection accessories such as gears and screws, and the specific replacement and adaptation is based on actual use, and is not limited to the one shown in the figure or described in the text.

[0045] An arc-shaped swing rod 2 701 hinged to a rotating ring 405 is arranged on the inner wall of the synchronous heat-insulating ring 7, a limiting ring 2 702 installed side by side with the limiting ring 1 406 is arranged on the inner wall of the synchronous heat-insulating ring 7, and a limiting column 2 slidably sleeved with the limiting ring 2 701 is arranged in the middle of the arc-shaped swing rod 2 701, the bottom of the arc-shaped swing rod 2 702 is hinged to the traction arc sheet 703, and a storage groove is arranged on the inner wall of the synchronous heat-insulating ring 7 close to the lower claw set 3;

[0046] The thermal insulation elastic cloth 704 is limitedly installed inside the storage groove, and the bottom of the thermal insulation elastic cloth 704 is connected to the traction arc piece 703. The arc rocker arm 2 701 follows the arc rocker arm 1 404 and is synchronously driven by the rotating ring 405, and moves and rotates along the limiting ring 2 702, thereby driving the traction arc piece 703 to move close to the surface of the pipe fitting. During the movement, the traction arc piece 703 drags the thermal insulation elastic cloth 704 to extend outward along the storage bin until the thermal insulation elastic cloth 704 opens, covering the excess gap between the synchronous insulation ring 7 and the pipe fitting.

[0047] After the upper arc claw 602 and the lower arc claw 302 initially clamp the pipe fitting, the limiting guide block 401 drives the ring frame 403 to move along the surface of the pulling guide rail 4 close to the lower arc claw 302 and the upper arc claw 602, until the ring frame 403 drives the end surface of the synchronous insulation ring 7 to be sleeved on the outside of the circular ring formed by the lower arc claw 302 and the upper arc claw 602. It should be noted that:

[0048] The step of sleeve connection between the synchronous thermal insulation ring 7 and the lower arc claw 302 and the upper arc claw 602 is only in the following situation: the diameter of the pipe is within the range of the lower arc claw 302 and the upper arc claw 602 to form a standard circular ring. If the diameter of the pipe exceeds the range, the lower arc claw 302 and the upper arc claw 602 are spliced ​​and cannot form a standard circular ring, then the synchronous thermal insulation ring 7 is only used to attach to the end faces of the lower arc claw 302 and the upper arc claw 602.

[0049] Combining Example 1 and Example 2, it can be seen that it is possible to flexibly adapt to pipes of different diameters by replacing the matching pipe transport bracket and the adjustable inner claw clamp 304, achieve precise clamping and stable support, and improve the versatility and use efficiency of the equipment; and it is possible to use a combination of a heat insulation curtain 605, a synchronous heat insulation ring 7, an exhaust fan, and a regulating valve 307 to effectively prevent heat overflow, promote uniform heat distribution, avoid local overheating of pipes, and improve heat utilization.

[0050] At the same time, the rotating ring 405, the arc-shaped rocker arm, etc. can be accurately controlled through the servo motor 402, the coupling and other components to simplify the operation process and improve work efficiency. The ring frame 403, the synchronous insulation ring 7 and the upper and lower half arc claws 302 can also be used to form a temporary closed space to provide a targeted heating environment for the pipe fittings and ensure the quality and effect of the heat treatment.

[0051] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A claw-type heat treatment device based on adaptive adjustment of pipe diameter, comprising a support base (1), characterized in that: A lower claw set (3) is arranged at the center of the top of the support base (1), a gantry (2) is arranged on both sides of the lower claw set (3), an upper claw set (6) is arranged on the top of the gantry (2) and is located above the lower claw set (3), and traction guide rails (4) are symmetrically arranged at both ends of the support base (1), the lower claw set (3) includes a fixed support (301) and a lower semi-arc claw (302), and a heater (303) and an inner claw clamp (304) are arranged on the inner wall of the lower semi-arc claw (302); A pipe transport guide rail (5) is arranged at one end of the traction guide rail (4) away from the support base (1), a ring frame (403) is arranged on the top of the traction guide rail (4), a synchronous heat insulation ring (7) is arranged on the outer wall of one end of the ring frame (403) close to the lower claw set (3), a rotating ring (405) and an extrusion arc sheet (408) are arranged inside the ring frame (403), and a traction arc sheet (703) and a heat insulation elastic cloth (704) are arranged inside the synchronous heat insulation ring (7).

2. The claw-type heat treatment device based on adaptive adjustment of pipe diameter according to claim 1 is characterized in that: A regulating valve (307) is arranged on the outer wall at the bottom of the lower semi-arc claw (302), a rotary cylinder (306) is arranged on the side section at the bottom of the lower semi-arc claw (302), a jet nozzle (305) is arranged in a concave shape on the inner wall surface of the lower semi-arc claw (302) above the rotary cylinder (306), and the heater (303) is in an arc-shaped structure and is laid in the middle of the inner wall of the lower semi-arc claw (302).

3. The claw-type heat treatment device based on adaptive adjustment of pipe diameter according to claim 2 is characterized in that: The inner claw clamp (304) is symmetrically arranged on the inner walls at both ends of the lower semi-arc claw (302); a rotary cylinder 2 (308) close to the inner claw clamp (304) is arranged on the claw body of the lower semi-arc claw (302); an inner connecting rod (309) is sleeved on the surface of the rotary cylinder 2 (308); and a rotary cylinder 3 (310) is arranged between the inner connecting rod (309) and the inner claw clamp (304).

4. The claw-type heat treatment device based on adaptive adjustment of pipe diameter according to claim 1 is characterized in that: The upper claw set (6) comprises an exhaust fan base (601), an exhaust fan is embedded inside the exhaust fan base (601), a plurality of groups of upper semi-arc claws (602) symmetrical to the lower semi-arc claws (302) are hingedly connected to the bottom wall of the exhaust fan base (601), an air suction port (603) is arranged on the top inner wall of the upper semi-arc claws (602), and a curtain cover (604) is arranged on the outer side wall of the upper semi-arc claws (602).

5. The claw-type heat treatment device based on adaptive adjustment of pipe diameter according to claim 4 is characterized in that: A heat insulation curtain (605) is arranged inside the curtain sleeve (604), a propulsion cylinder connected to the heat insulation curtain (605) is arranged on the inner wall of the end face of the curtain sleeve (604), lifting cylinders are symmetrically embedded in the inner wall of the gantry (2), a moving beam (201) connected to the lifting cylinder is arranged between the gantry (2), and the moving beam (201) is sleeved with the exhaust fan base (601).

6. The claw-type heat treatment device based on adaptive adjustment of pipe diameter according to claim 1 is characterized in that: The middle part of the traction guide rail (4) is slidably sleeved with a limit guide block (401), the top of the limit guide block (401) is provided with a Y-shaped frame connected to the ring frame (403), and a servo motor (402) is provided on the outer wall of one side of the Y-shaped frame, the rotating ring (405) is sleeved on the outer side of the inner wall of the ring frame (403), and the rotating ring (405) is transmission-connected to the servo motor (402), and the ring frame (403) is designed in a concentric circle structure.

7. The claw-type heat treatment device based on adaptive adjustment of pipe diameter according to claim 6 is characterized in that: The rotating ring (405) is internally sleeved with a limiting ring (406) close to the inner side of the inner wall of the ring frame (403); the surface of the rotating ring (405) is hinged with an arc-shaped swing rod (404) connected to an extrusion arc sheet (408); the middle part of the arc-shaped swing rod (404) is slidably sleeved with a limiting column (407), and the limiting column (407) is slidably sleeved with the limiting ring (406).

8. The claw-type heat treatment device based on adaptive adjustment of pipe diameter according to claim 7 is characterized in that: The inner wall of the synchronous heat insulation ring (7) is provided with an arc-shaped rocker arm 2 (701) hinged to a rotating ring (405), the inner wall of the synchronous heat insulation ring (7) is provided with a limit ring 2 (702) installed side by side with the limit ring 1 (406), and a limit column 2 is provided in the middle of the arc-shaped rocker arm 2 (701) to which the limit ring 2 (701) is slidably sleeved, the bottom of the arc-shaped rocker arm 2 (702) is hinged to the traction arc plate (703), and a storage groove is provided on the inner wall of the synchronous heat insulation ring (7) on the side close to the lower claw sleeve (3), the heat insulation elastic cloth (704) is limitedly installed inside the storage groove, and the bottom of the heat insulation elastic cloth (704) is connected to the traction arc plate (703).

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