A heat treatment industrial furnace with a rapid cooling mechanism

Abstract

The present invention belongs to the technical field of heat treatment industrial furnaces, especially a heat treatment industrial furnace with a rapid cooling mechanism. The following scheme is proposed, including a furnace body, and also including a horizontally placed fixed wind tube and a movable wind tube; the top of the furnace body is provided with an opening, and a top cover that can be lifted vertically is provided at the opening position, and a cooling box is fixed at the position corresponding to the top cover on the top of the furnace body; the fixed wind tube is fixed at the upper position in the cooling box, the movable wind tube is connected to the top cover, the movable wind tube is lifted vertically with the top cover, and the movable wind tube is connected to an electric telescopic rod; the fixed wind tube is connected to an air inlet pipe and an air exhaust pipe, and the outer walls of the air inlet pipe and the air exhaust pipe are fixed to the top shell of the cooling box. The present invention quickly guides the dispersion effect of the hot air on the top of the furnace body and improves the cooling efficiency through the movement change of the movable wind tube and the top cover, the distance change of the fixed wind tube and the movable wind tube, and the heat change of the movable wind tube.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment industrial furnaces, and in particular to a heat treatment industrial furnace with a rapid cooling mechanism. Background Art

[0002] An industrial furnace is a thermal equipment that uses heat from fuel combustion or electrical energy conversion to heat materials or workpieces in industrial production.

[0003] With reference to the Chinese patent with the announcement number CN115584383B, a segmented heat treatment industrial furnace is disclosed, and the heat treatment industrial furnace assembly includes an industrial furnace body, an internal placement frame, a placement bottom plate, a workpiece, a side storage frame, and an up and down moving rod, so that the telescopic rod is controlled to move upward. At this time, the linkage rope can be loosened, and at the same time, the telescopic rod can be controlled to push the push-up staggered plate with the help of the receiving connecting rod. Then the moving connecting rod can slide inside the guide slide groove to move the push-up staggered plate upward. At this time, the push-up staggered plate will push the side of the workpiece to make the workpiece rotate, and the lower pressure plate will not cover the workpiece, which can make each side of the workpiece evenly heated, and then the workpiece can be evenly heat treated.

[0004] However, the above patent is the same as the conventional means of the prior art. During the cooling process after suspension or end of use, generally only the exhaust fan is turned on to dissipate heat, or the cooling medium is circulated in fixedly distributed pipes to dissipate heat. However, the heat exchange and cooling position is fixed, resulting in low cooling efficiency in the furnace body. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a heat treatment industrial furnace with a rapid cooling mechanism.

[0006] The present invention proposes a heat treatment industrial furnace with a rapid cooling mechanism, which comprises a furnace body, and also comprises a horizontally placed fixed air duct and a movable air duct; an opening is arranged on the top of the furnace body, a top cover which can be vertically lifted and lowered is arranged at the opening position, a cooling box is fixed at a position corresponding to the top cover on the top of the furnace body; the fixed air duct is fixed at an upper position in the cooling box, the movable air duct is connected to the top cover, the movable air duct is vertically lifted and lowered along with the top cover, and the movable air duct is connected to an electric telescopic rod; an air inlet pipe and an air exhaust pipe are connected to the fixed air duct, and the outer walls of the air inlet pipe and the air exhaust pipe are fixed to the top shell of the cooling box.

[0007] Preferably, both ends of the movable air duct are opened, and both ends of the fixed air duct are sealed. A heat exchange tube with sealed ends is arranged in the movable air duct, and the middle position of the heat exchange tube is connected to the fixed air duct, and the outer diameter of the heat exchange tube is smaller than the inner diameter of the movable air duct.

[0008] Preferably, a connecting pipe is connected to the middle position of the outer wall of the top of the heat exchange tube, and the connecting pipe extends upward to the outside of the movable air duct. The outer wall of the connecting pipe is fixed to the shell of the movable air duct, and one end of the connecting pipe is connected to a connecting pipe. An extension pipe is connected to the middle position of the outer wall of the bottom of the fixed air duct, and the outer wall of the extension pipe is in sliding contact with the inner wall of the connecting pipe; a connecting ring is fixed to the middle position of the inner wall of the bottom of the heat exchange tube, and a connecting rod is fixed to one end of the electric telescopic rod, and the bottom end of the circumferential outer wall of the connecting rod is rotatably connected to the inner wall of the connecting ring.

[0009] Preferably, the bottom end of the circumferential inner wall of the connecting pipe is rotatably connected to the top end of the circumferential outer wall of the connecting pipe via a bearing, a fixed sleeve is fixed at the center position of the top of the top cover, a rotating shaft is fixed at the middle position of the bottom of the movable air cylinder, the outer wall of the rotating shaft is rotatably connected to the inner wall of the fixed sleeve via a bearing, vertically extending guide rods are fixed on both sides of the top of the top cover, guide frames are fixed on both sides of the cooling box, and vertical holes are opened at positions corresponding to the guide rods on the guide frames.

[0010] Preferably, both ends of the circumferential outer wall of the heat exchange tube are provided with air flow grooves distributed in a circular array, and the air flow grooves are arranged in a spiral shape.

[0011] Preferably, both ends of the fixed air duct are detachably connected with a tube cover, and an extension tube extending toward the inside of the fixed air duct is arranged in the middle position of the tube cover, the extension tube is opened at one end facing the tube cover, and is sealed at one end away from the tube cover; the outer diameter of the extension tube gradually increases toward the direction approaching the tube cover, the bottom end of the air inlet pipe corresponds to one side of the top opening of the extension pipe, and the exhaust pipe is arranged at the edge position of one end of the fixed air duct.

[0012] Preferably, the fixed wind duct and the movable wind duct both extend horizontally between the two sides of the cooling box, both sides of the circumferential outer wall of the connecting pipe are connected with fixed pipes, the fixed pipes are vertically arranged to the fixed wind duct, one end of the fixed pipe is connected with a dispersed air duct, and a plurality of air holes are opened on the outer wall of the dispersed air duct.

[0013] Preferably, the dispersed air duct is sequentially connected with a bending portion, an extension portion 1, a guide portion and an extension portion 2, and one end of the circumferential inner wall of the bending portion is rotatably connected to the circumferential outer wall of the fixed tube through a bearing; the guide frame extends horizontally in the axial direction of the fixed air cylinder, and both sides of the guide frame are opened, a guide ring is fixed to the outer wall of the guide portion, and the top and bottom of the guide frame are provided with guide grooves that are in sliding contact with the outer wall of the guide ring.

[0014] Preferably, the bending portion is arranged as an arc-shaped structure arched in the direction away from the guide frame, the distance between the extension portion 1 and the extension portion 2 gradually increases in the direction away from the guide portion, the extension portion 2 is arranged with an opening at one end away from the guide portion, and the end of the extension portion 2 corresponds to the position of the bending portion.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the movable air duct and the top cover are made to reciprocate vertically by an electric telescopic rod. During the vertical reciprocating movement, the top cover will never completely close the opening, so that the gap at the opening position is constantly changed to guide the rapid flow and dispersion effect of the hot air flow in the furnace body, thereby improving the heat exchange and cooling effect of the hot air flow with the fixed air duct and the movable air duct; and at the same time, the distance between the movable air duct and the fixed air duct is changed to improve the dispersion effect of the internal cold air; the movable air duct is rapidly cooled when it rises to the top and then descends into the furnace body; thereby, the dispersion effect of the hot air on the top of the furnace body is rapidly guided and the cooling efficiency is improved through the movement change of the movable air duct and the top cover, the change of the distance between the fixed air duct and the movable air duct, and the change of the heat of the movable air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention;

[0018] Figure 2 A schematic diagram of the internal structure of a cooling box of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the distribution structure of fixed air ducts and mobile air ducts of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention;

[0020] Figure 4 A schematic diagram of the internal structure of a fixed air duct and a movable air duct of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of a mobile air duct of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the internal structure of a heat exchange tube of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention;

[0023] Figure 7 This is a schematic diagram of the internal structure of a fixed air duct of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention;

[0024] Figure 8 This is a schematic diagram of the dispersed air duct structure of a heat treatment industrial furnace with a rapid cooling mechanism proposed by the present invention.

[0025] In the figure: 1 furnace body, 2 top cover, 3 cooling box, 4 fixed air duct, 5 mobile air duct, 6 mounting frame, 7 electric telescopic rod, 701 connecting rod, 8 connecting pipe, 9 extension pipe, 10 air inlet pipe, 11 exhaust pipe, 12 heat exchange pipe, 121 air flow groove, 13 connecting pipe, 14 pipe cover, 15 cylinder cover, 16 extension cylinder, 17 connecting ring, 18 fixed sleeve, 19 rotating shaft, 20 guide frame, 21 guide rod, 22 fixed pipe, 23 dispersed air duct, 231 bending part, 232 extension part 1, 233 guide part, 234 extension part 2, 24 air hole, 25 guide ring, 26 guide groove. DETAILED DESCRIPTION

[0026] Example 1: Reference Figure 1-Figure 7A heat treatment industrial furnace with a rapid cooling mechanism comprises a furnace body 1, and also comprises a horizontally placed fixed wind tube 4 and a movable wind tube 5; an opening is arranged on the top of the furnace body 1, and a top cover 2 which can be lifted vertically is arranged at the opening position, a cooling box 3 is fixed at a position corresponding to the top cover 2 on the top of the furnace body 1, and the fixed wind tube 4 and the movable wind tube 5 are both arranged in the cooling box 3; the fixed wind tube 4 is fixed at an upper position in the cooling box 3, the movable wind tube 5 is connected to the top cover 2, the movable wind tube 5 is arranged below the fixed wind tube 4 and the movable wind tube 5 is lifted vertically along with the top cover 2, and the movable wind tube 5 is connected to an electric telescopic rod 7; a fixed wind tube 4 is connected to a There are air inlet duct 10 and exhaust duct 11, the outer walls of air inlet duct 10 and exhaust duct 11 are fixed to the top shell of cooling box 3, and the top ends of air inlet duct 10 and exhaust duct 11 extend upward out of cooling box 3; when furnace body 1 is in normal use, electric telescopic rod 7 lifts up movable air cylinder 5 and top cover 2, and closes the top cover 2 with the opening at the top of furnace body 1, so as to ensure the normal heat treatment effect in furnace body 1; when furnace body 1 is suspended or stopped and needs to be cooled, cold air can be injected into fixed air cylinder 4 and movable air cylinder 5 from air inlet duct 10 in advance for pre-cooling; when furnace body 1 is cooled again, the air inlet duct 10 is used to cool the furnace body 1. The air duct 10 and the exhaust duct 11 continuously inject new cold air into the fixed air duct 4: the mobile air duct 5 and the top cover 2 are moved downward by the electric telescopic rod 7 and extended into the top chamber of the furnace body 1, and the cold air in the cooling box 3 is dropped into the furnace body 1. Part of the hot air flow in the top chamber of the furnace body 1 is directly heat exchanged and cooled in the mobile air duct 5 extended into the furnace body 1, and part of the hot air flow is poured from the opening position into the cooling box 3 at the fixed air duct 4 position for heat exchange and cooling, so that the hot air flow in the furnace body 1 is dispersed; and the mobile air duct 5 and the top cover 2 are vertically reciprocated by the electric telescopic rod 7, and the top cover 2 will not be moved during the vertical reciprocating movement. The opening is completely closed so that the gap at the opening position changes continuously to guide the rapid flow and dispersion effect of the hot air flow in the furnace body 1, thereby improving the heat exchange and cooling effect between the hot air flow and the fixed wind tube 4 and the movable wind tube 5; and at the same time, the distance between the movable wind tube 5 and the fixed wind tube 4 is changed to improve the dispersion effect of the internal cold air; the movable wind tube 5 quickly cools down when it rises to the top and then descends into the furnace body 1; thereby, the movement change of the movable wind tube 5 and the top cover 2, the change of the distance between the fixed wind tube 4 and the movable wind tube 5, and the change of the heat of the movable wind tube 5 can quickly guide the dispersion effect of the hot air on the top of the furnace body 1 and improve the cooling efficiency.

[0027] In the present invention, reference is made to Figure 1-Figure 7The two ends of the mobile wind tube 5 are opened, and the two ends of the fixed wind tube 4 are sealed. A heat exchange tube 12 with sealed ends is arranged in the mobile wind tube 5, and the middle position of the heat exchange tube 12 is connected with the fixed wind tube 4. The outer diameter of the heat exchange tube 12 is smaller than the inner diameter of the mobile wind tube 5. During use, the heat exchange tube 12 is arranged in the mobile wind tube 5 and moves vertically with the mobile wind tube 5, and in the process of the heat exchange tube 12 moving therewith, the heat exchange tube 12 is directly connected with the fixed wind tube 4, while the mobile wind tube 5 is not directly connected with the fixed wind tube 4, so that part of the hot air in the furnace body 1 directly enters the cooling box 3 and contacts the outer wall of the fixed wind tube 4, and part of the hot air enters the mobile wind tube 5 and contacts the outer wall of the heat exchange tube 12, so as to perform heat exchange and cooling treatment, thereby avoiding the direct impact of cold air and hot air to cause excessive pressure difference.

[0028] In the present invention, reference is made to Figure 1-Figure 7 A connecting pipe 13 is connected to the middle position of the outer wall of the top of the heat exchange tube 12, and the connecting pipe 13 extends upward to the outside of the mobile wind tube 5. The outer wall of the connecting pipe 13 is fixed to the shell of the mobile wind tube 5. One end of the connecting pipe 13 is connected to a connecting pipe 8. An extension pipe 9 is connected to the middle position of the outer wall of the bottom of the fixed wind tube 4. The outer wall of the extension pipe 9 is in sliding contact with the inner wall of the connecting pipe 8; a connecting ring 17 is fixed to the middle position of the inner wall of the bottom of the heat exchange tube 12, and a connecting rod 701 is fixed to one end of the electric telescopic rod 7. The bottom end of the circumferential outer wall of the connecting rod 701 is rotatably connected to the inner wall of the connecting ring 17. An installation is fixed between the top of the cooling box 3 and the electric telescopic rod 7. The mounting frame 6 is provided with a rod sleeve in the middle position of the top of the fixed wind duct 4, the outer wall of the connecting rod 701 is in sliding contact with the inner wall of the rod sleeve, and the connecting rod 701 extends into the heat exchange tube 12 along the axis of the extension tube 9 and the connecting tube 13. When in use, the fixed wind duct 4 is fixedly connected to the top of the shell of the cooling box 3 through the air inlet pipe 10 and the exhaust pipe 11, and the movable wind duct 5 and the top cover 2 are vertically lifted and lowered by the electric telescopic rod 7 and the connecting rod 701, and the sliding connection of the connecting tube 8 and the extension tube 9 keeps the fixed wind duct 4 and the heat exchange tube 12 connected at all times to ensure the heat exchange and cooling effect of the movable wind duct 5 and the heat exchange tube 12 when descending into the furnace body 1.

[0029] In the present invention, reference is made to Figure 1-Figure 7The bottom end of the inner circumference wall of the connecting pipe 8 and the top end of the outer circumference wall of the connecting pipe 13 are rotatably connected through a bearing. A fixed sleeve 18 is fixed at the center position of the top of the top cover 2. A rotating shaft 19 is fixed at the middle position of the bottom of the movable air cylinder 5. The outer wall of the rotating shaft 19 is rotatably connected to the inner wall of the fixed sleeve 18 through a bearing. Vertically extending guide rods 21 are fixed on both sides of the top of the top cover 2. Guide frames 20 are fixed at positions corresponding to the guide rods 21 on both sides of the cooling box 3. Vertical holes are opened on the guide frames 20 at positions corresponding to the guide rods 21. When the movable air cylinder 5 and the top cover 2 are lowered to When the furnace body 1 is in the internal chamber, part of the hot air flow in the furnace body 1 enters from the two ends of the movable air duct 5 and contacts the outer wall of the heat exchange tube 12. Due to the outflow of the air flow inside the furnace body 1 or the air flow movement caused by the temperature difference caused by cooling, the movable air duct 5 and the heat exchange tube 12 rotate around the axis of the connecting tube 13, thereby improving the dispersion flow effect of the hot air rising from the furnace body 1 to the cooling box 3, so as to improve the flow and heat exchange effect of the hot air around the fixed air duct 4 and the movable air duct 5, thereby improving the cooling efficiency; and the guide frame 20 limits the guide rod 21 to ensure that the top cover 2 always remains horizontal and stable.

[0030] In the present invention, reference is made to Figure 1-Figure 7 Both ends of the heat exchange tube 12 are detachably connected with a tube cover 14, and both ends of the circumferential outer wall of the heat exchange tube 12 are provided with air flow grooves 121 distributed in a circular array. The air flow grooves 121 are arranged in a spiral shape to increase the contact area between the outer wall of the heat exchange tube 12 and the hot air flow, and the collision of the external moving air flow with the air flow grooves 121 improves the rotation operation effect of the heat exchange tube 12 and the movable wind tube 5, thereby improving the actual heat exchange and cooling efficiency.

[0031] In the present invention, reference is made to Figure 1-Figure 7 The two ends of the fixed air duct 4 are detachably connected with a tube cover 15, and an extension tube 16 extending toward the inside of the fixed air duct 4 is arranged in the middle of the tube cover 15. The extension tube 16 is opened at one end facing the tube cover 15, and the end of the extension tube 16 away from the tube cover 15 is sealed, so that part of the hot air flow can enter the extension tube 16, so as to increase the contact area between the cold air in the fixed air duct 4 and the external hot air and improve the cooling efficiency; the outer diameter of the extension tube 16 gradually increases toward the direction close to the tube cover 15, and the bottom end of the air inlet pipe 10 and the extension tube 16 are connected. Corresponding to one side of the top opening of the tube 9, the exhaust duct 11 is arranged at the edge position of one end of the fixed wind tube 4, so that the cold air injected from the air inlet duct 10 can be directly aimed at the extension tube 9, the cold air quickly drops, and the cold air after heat exchange in the heat exchange tube 12 and the fixed wind tube 4 rises, and moves toward the end of the fixed wind tube 4 along the outer wall slope of the extension tube 16, thereby improving the flow effect of the internal cold air through the arrangement of the extension tube 16 and the air inlet duct 10 and the exhaust duct 11, so that the cold air can be quickly replenished to improve the cooling efficiency.

[0032] Embodiment 2: Embodiment 2 includes all structures and methods of Embodiment 1, with reference to Figure 1-Figure 8 A heat treatment industrial furnace with a rapid cooling mechanism also includes: a fixed air duct 4 and a movable air duct 5 are horizontally extended between the two sides of a cooling box 3, and both sides of the outer wall of the circumference of the connecting pipe 8 are connected with fixed pipes 22, and the fixed pipe 22 is vertically arranged with the fixed air duct 4. One end of the fixed pipe 22 is connected with a dispersed air duct 23, and the outer wall of the dispersed air duct 23 is provided with a plurality of air holes 24. The dispersed air duct 23 is sequentially connected with a bending portion 231, an extension portion 1 232, a guide portion 233 and an extension portion 2 234, one end of the inner circumference wall of the curved portion 231 is rotatably connected to the outer circumference wall of the fixed pipe 22 through a bearing; the guide frame 20 extends horizontally in the axial direction of the fixed wind tube 4, and both sides of the guide frame 20 are opened. A guide ring 25 is fixed to the outer wall of the guide portion 233, and a guide groove 26 is provided at the top and bottom of the guide frame 20 to slide in contact with the outer wall of the guide ring 25. When the mobile wind tube 5 and the top cover 2 are lowered, the connecting pipe 8 and the end of the curved portion 231 will be deflected downward, and the guide portion 233 can only slide horizontally under the limiting operation of the guide frame 20, so that when the connecting pipe 8 descends, the dispersed air duct 23 is tilted and deflected as a whole, and the guide part 233 is close to the position of the connecting pipe 8, and when the connecting pipe 8 rises, the dispersed air duct 23 rotates and recovers; when the movable air cylinder 5 and the top cover 2 are at the top, the inner wall of the connecting pipe 8 fits with the outer wall of the extension pipe 9, and the end of the fixed pipe 22 is blocked, that is, when the top cover 2 and the movable air cylinder 5 just enter the furnace body 1, the hot air flow rising from the furnace body 1 will only flow from the air cylinder 5. The holes 24 are dispersed in the dispersed air duct 23 and do not enter the connecting pipe 8 and the extension pipe 9, so that the hot air is initially cooled in the dispersed air duct 23, and then as the fixed pipe 22 descends to separate from the extension pipe 9, the gas in the dispersed air duct 23 is connected with the connecting pipe 8, thereby quickly cooling down and avoiding direct contact between the overheated air flow and the cold source; and the swing of the dispersed air duct 23 and the reciprocating motion of the mobile wind tube 5 further improve the dispersed flow effect of the hot air, so as to enhance the actual rapid cooling efficiency in the furnace body 1.

[0033] In the present invention, reference is made to Figure 1-Figure 8The curved portion 231 is configured to be an arc-shaped structure arched in a direction away from the guide frame 20, the distance between the extension portion 1 232 and the extension portion 234 gradually increases in a direction away from the guide portion 233, the extension portion 234 is configured to be open at one end away from the guide portion 233, and the end of the extension portion 234 corresponds to the position of the curved portion 231, so that when the dispersion air duct 23 swings along with the vertical lifting of the connecting pipe 8, the airflow in the dispersion air duct 23 is dispersed upward in the extension portion 1 232 and the extension portion 234, and is dispersed at the position of the guide portion 233; and when the connecting pipe 8 descends to the bottom and connects with the curved portion 231, the retention effect of the cold air in the curved portion 231 of the arc-shaped structure is improved, so that after rising, the cold air contacts and exchanges heat with the chamber in the extension portion 1 232 and the hot air flow at the port of the extension portion 234, thereby further enhancing the airflow movement dispersion effect, thereby improving the cooling efficiency.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat treatment industrial furnace with a rapid cooling mechanism, comprising a furnace body (1), characterized in that: It also includes a horizontally placed fixed wind tube (4) and a movable wind tube (5); The top of the furnace body (1) is provided with an opening, a top cover (2) that can be lifted vertically is provided at the opening, and a cooling box (3) is fixed at a position on the top of the furnace body (1) corresponding to the top cover (2); The fixed wind tube (4) is fixed at an upper position in the cooling box (3); the movable wind tube (5) is connected to the top cover (2); the movable wind tube (5) is vertically raised and lowered along with the top cover (2); and the movable wind tube (5) is connected to an electric telescopic rod (7); The fixed wind tube (4) is connected to an air inlet pipe (10) and an air exhaust pipe (11), and the outer walls of the air inlet pipe (10) and the air exhaust pipe (11) are fixed to the top shell of the cooling box (3). The two ends of the movable wind tube (5) are open, and the two ends of the fixed wind tube (4) are sealed. A heat exchange pipe (12) with sealed ends is arranged in the movable wind tube (5). The middle position of the heat exchange pipe (12) is connected to the inside of the fixed wind tube (4). The outer diameter of the heat exchange pipe (12) is smaller than the inner diameter of the movable wind tube (5). The middle position of the top outer wall of the heat exchange pipe (12) is connected to a connecting pipe (13). The connecting pipe ( 13) extends upward to the outside of the movable wind tube (5), the outer wall of the connecting pipe (13) is fixed to the shell of the movable wind tube (5), one end of the connecting pipe (13) is connected to a connecting pipe (8), the middle position of the outer wall of the bottom of the fixed wind tube (4) is connected to an extension pipe (9), the outer wall of the extension pipe (9) is in sliding contact with the inner wall of the connecting pipe (8); a connecting ring (17) is fixed to the middle position of the inner wall of the bottom of the heat exchange tube (12), a connecting rod (701) is fixed to one end of the electric telescopic rod (7), and the bottom end of the circumferential outer wall of the connecting rod (701) is rotatably connected to the inner wall of the connecting ring (17).

2. The heat treatment industrial furnace with a rapid cooling mechanism according to claim 1, characterized in that: The bottom end of the circumferential inner wall of the connecting pipe (8) and the top end of the circumferential outer wall of the connecting pipe (13) are rotatably connected via a bearing; a fixing sleeve (18) is fixed at the center position of the top of the top cover (2); a rotating shaft (19) is fixed at the middle position of the bottom of the movable air cylinder (5); the outer wall of the rotating shaft (19) is rotatably connected to the inner wall of the fixing sleeve (18) via a bearing; vertically extending guide rods (21) are fixed on both sides of the top of the top cover (2); guide frames (20) are fixed on both sides of the cooling box (3); and vertical holes are provided on the guide frames (20) at positions corresponding to the guide rods (21).

3. The heat treatment industrial furnace with a rapid cooling mechanism according to claim 2, characterized in that: Air flow grooves (121) distributed in a circular array are provided at both ends of the circumferential outer wall of the heat exchange tube (12), and the air flow grooves (121) are arranged in a spiral shape.

4. The heat treatment industrial furnace with a rapid cooling mechanism according to claim 2, characterized in that: Both ends of the fixed air cylinder (4) are detachably connected to a cylinder cover (15); an extension cylinder (16) extending toward the interior of the fixed air cylinder (4) is provided in the middle of the cylinder cover (15); the extension cylinder (16) is opened at one end facing the cylinder cover (15); and the extension cylinder (16) is sealed at one end away from the cylinder cover (15); The outer diameter of the extension tube (16) gradually increases in a direction approaching the tube cover (15); the bottom end of the air inlet pipe (10) corresponds to one side of the top opening of the extension tube (9); and the air exhaust pipe (11) is arranged at an edge position of one end of the fixed air tube (4).

5. A heat treatment industrial furnace with a rapid cooling mechanism according to any one of claims 1 to 4, characterized in that: The fixed air duct (4) and the movable air duct (5) both extend horizontally between two sides of the cooling box (3); both sides of the circumferential outer wall of the connecting pipe (8) are connected to fixed pipes (22); the fixed pipes (22) are arranged vertically to the fixed air duct (4); one end of the fixed pipe (22) is connected to a dispersion air duct (23); and a plurality of air holes (24) are provided on the outer wall of the dispersion air duct (23).

6. The heat treatment industrial furnace with a rapid cooling mechanism according to claim 5, characterized in that: The dispersed air duct (23) is provided with a curved portion (231), a first extension portion (232), a guide portion (233) and a second extension portion (234) in sequence, and one end of the circumferential inner wall of the curved portion (231) is rotatably connected to the circumferential outer wall of the fixed tube (22) via a bearing; The guide frame (20) extends horizontally in the axial direction of the fixed wind tube (4), and both sides of the guide frame (20) are provided with openings. A guide ring (25) is fixed to the outer wall of the guide portion (233), and a guide groove (26) is provided at the top and bottom of the guide frame (20) for sliding contact with the outer wall of the guide ring (25).

7. The heat treatment industrial furnace with a rapid cooling mechanism according to claim 6, characterized in that: The bending portion (231) is arranged to be an arc-shaped structure arched in a direction away from the guide frame (20); the distance between the first extension portion (232) and the second extension portion (234) gradually increases in a direction away from the guide portion (233); one end of the second extension portion (234) away from the guide portion (233) is arranged to be open; and the end of the second extension portion (234) corresponds to the position of the bending portion (231).

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