Heat treatment device

Abstract

The utility model discloses a heat treatment device which comprises a furnace body, a sleeve is arranged on one side of the furnace body, one end of the sleeve is connected with a quick connecting device, one end of the sleeve is provided with a gas conveying pipe, a sealing device is arranged on the outer side of the sleeve, the sealing device comprises a fixing plate, a hydraulic cylinder, a hydraulic rod, a gasket, a receding groove and a matching sleeve, and the fixing plate is fixedly arranged on the outer side of the sleeve. One end of the hydraulic rod is connected with the hydraulic cylinder, the other end of the hydraulic rod is connected with the matching sleeve, the receding groove is formed in the outer side of the sleeve, the matching sleeve is arranged on the outer side of the sleeve, the gasket is installed on the inner side of the sleeve, the furnace cover is arranged on one side of the furnace body, and the quick clamping device is installed on one side of the furnace cover and comprises an elastic piece, a connecting rod, a connecting plate, a connecting sleeve and a connecting groove. The elastic sheet is arranged on the side wall of the connecting rod along the thread line, the connecting sleeve is arranged on the outer side of the connecting rod in a sleeving mode, the connecting plate is connected to one side of the connecting sleeve, and the connecting groove is formed in the outer side of the connecting sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment devices, and more specifically, it relates to a heat treatment device. Background Art

[0002] In the existing technology, heat treatment devices are indispensable equipment in industrial production, especially in metal processing and manufacturing. These devices usually use gas burners to generate high temperatures to achieve heat treatment of metal workpieces. However, there are some problems in the connection of gas pipelines and the installation of furnace lids in the existing heat treatment devices, which may affect the performance, safety and operation efficiency of the equipment.

[0003] First of all, the connection and disconnection operations of gas pipelines in the existing heat treatment devices are usually rather cumbersome. Since gas pipelines need to withstand high pressure and high temperature, ensuring their safe connection is crucial. However, in the existing technology, the connection and disconnection processes between pipelines often require complex steps and tools, which are not only time-consuming but also prone to errors. Such cumbersome operations not only reduce the usability of the equipment but also may increase maintenance costs and downtime.

[0004] Secondly, although some devices in the existing technology can achieve quick connection and disconnection of gas pipelines and the furnace body, this structure often sacrifices the sealing effect at the pipeline connection. The quick connection and disconnection mechanism may not provide sufficient sealing performance, resulting in gas leakage, which not only reduces the heat treatment efficiency but also may cause safety hazards and environmental problems.

[0005] In addition, in the existing technology, the furnace lid usually needs to be installed on one side of the furnace body to ensure the normal use of the heat treatment furnace. However, most of the existing devices use a simple bolt locking method to install the furnace lid. This installation method is not only time-consuming but also in a high-temperature environment, the bolts are prone to deformation or damage, resulting in the inability to fasten the furnace lid, thus affecting the uniformity of heat treatment and the service life of the furnace body. Summary of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] In view of the problems existing in the existing technology, the utility model provides a heat treatment device to solve the technical problems mentioned in the background art.

[0008] (2) Technical Solutions

[0009] To achieve the above object, the present utility model provides the following technical solution: A heat treatment device, comprising a furnace body, a sleeve is provided on one side of the furnace body, a quick-connection device is connected to one end of the sleeve, an air delivery pipe is provided at one end of the sleeve, a sealing device is arranged outside the sleeve, the sealing device includes a fixing plate, a hydraulic cylinder, a hydraulic rod, a gasket, a relief groove and a mating sleeve, the fixing plate is fixedly arranged outside the sleeve, the hydraulic cylinder is detachably installed on the fixing plate, one end of the hydraulic rod is connected to the output end of the hydraulic cylinder, the other end of the hydraulic rod is connected to the mating sleeve, the relief groove is opened on the outside of the sleeve, the mating sleeve is slidably arranged outside the sleeve, the gasket is detachably installed inside the sleeve, a furnace cover is provided on one side of the furnace body, a quick-clamping device is installed on one side of the furnace cover, the quick-clamping device includes an elastic piece, a connecting rod, a connecting plate, a connecting sleeve and a connecting groove, the elastic piece is arranged along the thread on the side wall of the connecting rod, the connecting sleeve is movably sleeved outside the connecting rod, the connecting plate is fixedly connected to one side of the connecting sleeve, the connecting groove is opened on the outside of the connecting sleeve, and the position of the connecting groove corresponds to the position of the elastic piece.

[0010] The present utility model is further arranged such that a control sleeve is provided on one side of the connecting plate, the control sleeve is movably sleeved outside the connecting rod, a push rod is provided on one side of the control sleeve, a top plate is provided at one end of the connecting rod, a through hole is opened on the top plate, and the diameter of the through hole is slightly larger than the diameter of the push rod.

[0011] The present utility model is further arranged such that a push spring is provided on one side of the control sleeve, the push spring is movably sleeved outside the push rod, and one end of the push spring is in contact connection with the top plate.

[0012] The present utility model is further arranged such that a handle is provided on the outside of the connecting sleeve, and the handle is fixedly connected to both sides of the connecting plate.

[0013] The present utility model is further arranged such that a rubber ring is provided on the outside of the air delivery pipe, a clamping groove is opened inside the sleeve, and the rubber ring is adapted to the clamping groove.

[0014] The present utility model is further arranged such that the quick-connection device includes a plug-in frame, a mating groove and a plug-in slot, both sides of the plug-in frame are slidably installed in the mating groove, the mating groove is opened inside the mating sleeve, one end of the plug-in frame is inserted into the plug-in slot, and the plug-in slot is opened on the outside of the air delivery pipe.

[0015] The present utility model is further arranged such that a lead screw is provided on the outside of the sleeve, opposite threads are symmetrically arranged at both ends of the lead screw, and the lead screw is movably connected to the two mating sleeves through threads respectively.

[0016] The utility model is further arranged such that a driven wheel is provided at one end of the lead screw, the driven wheel is fixedly connected to one end of the lead screw, a secondary gear is rotatably sleeved outside the sleeve, the secondary gear meshes with the driven wheel, a motor is provided outside the sleeve, the motor is detachably mounted outside the sleeve, a driving wheel is provided at the output end of the motor, and the driving wheel meshes with the secondary gear.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a heat treatment device, which has the following beneficial effects:

[0019] 1. The design of the quick-connection device can achieve the quick connection and disconnection of the gas pipeline and the sleeve, improve the operation efficiency and safety. Through the combination of the insertion rack, the mating groove, the insertion slot, the lead screw, the driven wheel, the secondary gear, the motor, and the driving wheel, quick and accurate connection and disconnection operations can be realized. The opening and closing of the motor can control the rotation of the lead screw, thereby driving the movement of the mating sleeve and the insertion rack to achieve quick connection and disconnection. Opposite threads are provided at both ends of the lead screw to ensure the simultaneous movement of the mating sleeve, improving the synchronization and consistency of the operation.

[0020] 2. The design of the sealing device can ensure the sealing performance at the connection between the gas pipeline and the sleeve, preventing gas leakage. Through the combination of components such as the fixing plate, the hydraulic cylinder, the hydraulic rod, the gasket, the relief groove, and the mating sleeve, effective sealing and pressing effects can be achieved. The opening of the hydraulic cylinder can synchronously push the mating sleeve to slide along the sleeve, enabling the insertion rack to move in the relief groove, thereby driving the gas pipeline to press the gasket through the insertion slot to ensure the sealing performance at the connection. The setting of the gasket can provide additional sealing performance to prevent gas leakage. The design of the relief groove can accommodate the movement of the insertion rack to ensure the smoothness and accuracy of the operation. The setting of the rubber ring and the card slot further improves the sealing performance.

[0021] 3. The design of the quick-clamping device can achieve the quick disassembly and installation of the furnace cover, improve the operation efficiency and safety. Through the combination of the elastic piece, the connecting rod, the connecting plate, the connecting sleeve, the connecting slot, the control sleeve, the ejector rod, the top plate, and the push spring, quick and accurate disassembly and installation operations can be realized. The rotation of the control sleeve and the pulling of the handle can drive the movement of the connecting sleeve and the connecting plate, thereby pushing the control sleeve to move, enabling the ejector rod to pass through the through-hole on the top plate. The movement of the connecting slot can cause the elastic piece to gather inward. When the push spring is compressed to the limit, the elastic piece no longer engages with the thread groove, thereby achieving quick disassembly. During installation, the elastic piece will gather inward under extrusion. When the connecting plate presses the furnace cover tightly, the connecting sleeve and the connecting rod will be completely inserted into the installation slot, and the elastic piece will automatically reset, thereby engaging with the thread groove in the installation slot to achieve the quick installation of the furnace cover. The stable support of the ejector rod for the control sleeve and the top plate can strengthen the stability of the connection structure and ensure the stable installation of the furnace cover. Description of the Drawings

[0022] Figure 1 This is a schematic diagram of the overall structure of a heat treatment device in the present utility model;

[0023] Figure 2 is Figure 1 a partial enlarged structural schematic diagram of part A in;

[0024] Figure 3 This is a schematic diagram of the structure of the quick - clamping device part in the present utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the quick - connection device and the sealing device parts in the present utility model;

[0026] Figure 5 This is a sectional structural schematic diagram of the quick - connection device and the sealing device parts in the present utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the quick - connection device and the sealing device parts after removing the mating sleeve in the present utility model.

[0028] In the figure: 1. Furnace body; 2. Sleeve; 3. Gas transmission pipe; 4. Fixed plate; 5. Hydraulic cylinder; 6. Hydraulic rod; 7. Gasket; 8. Relief groove; 9. Mating sleeve; 10. Furnace cover; 11. Elastic sheet; 12. Connecting rod; 13. Connecting plate; 14. Connecting sleeve; 15. Connecting groove; 16. Control sleeve; 17. Thrust rod; 18. Top plate; 19. Through hole; 20. Push spring; 21. Handle; 22. Rubber ring; 23. Card slot; 24. Plug - in frame; 25. Matching groove; 26. Plug - in slot; 27. Lead screw; 28. Driven wheel; 29. Sub - gear; 30. Motor; 31. Driving wheel. Detailed Description of the Preferred Embodiment

[0029] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0030] It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0031] In the present utility model, unless otherwise stated, the directions such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually in the left and right directions shown in the drawings; "inside, outside" refer to the inside and outside relative to the contour of each component itself, but the above - mentioned direction terms do not limit the present utility model.

[0032] Please refer toFigures 1-6 , a heat treatment device, comprising a furnace body 1, a sleeve 2 is provided on one side of the furnace body 1, a quick connection device is connected to one end of the sleeve 2, a gas delivery pipe 3 is provided at one end of the sleeve 2, a sealing device is arranged outside the sleeve 2, the sealing device includes a fixing plate 4, a hydraulic cylinder 5, a hydraulic rod 6, a washer 7, a relief groove 8 and a mating sleeve 9, the fixing plate 4 is fixedly arranged outside the sleeve 2, the hydraulic cylinder 5 is detachably installed on the fixing plate 4, one end of the hydraulic rod 6 is connected to the output end of the hydraulic cylinder 5, the other end of the hydraulic rod 6 is connected to the mating sleeve 9, the relief groove 8 is opened on the outside of the sleeve 2, the mating sleeve 9 is slidably arranged on the outside of the sleeve 2, the washer 7 is detachably installed inside the sleeve 2, a furnace cover 10 is provided on one side of the furnace body 1, a quick clamping device is installed on one side of the furnace cover 10, the quick clamping device includes an elastic piece 11, a connecting rod 12, a connecting plate 13, a connecting sleeve 14 and a connecting groove 15, the elastic piece 11 is arranged along the thread on the side wall of the connecting rod 12, the connecting sleeve 14 is movably sleeved outside the connecting rod 12, the connecting plate 13 is fixedly connected to one side of the connecting sleeve 14, the connecting groove 15 is opened on the outside of the connecting sleeve 14, and the position of the connecting groove 15 corresponds to the position of the elastic piece 11.

[0033] A control sleeve 16 is provided on one side of the connecting plate 13, the control sleeve 16 is movably sleeved outside the connecting rod 12, a push rod 17 is provided on one side of the control sleeve 16, a top plate 18 is provided at one end of the connecting rod 12, and a through hole 19 is opened on the top plate 18, and the diameter of the through hole 19 is slightly larger than the diameter of the push rod 17.

[0034] A push spring 20 is provided on one side of the control sleeve 16, the push spring 20 is movably sleeved outside the push rod 17, and one end of the push spring 20 is in contact connection with the top plate 18.

[0035] A handle 21 is provided on the outside of the connecting sleeve 14, and the handle 21 is fixedly connected to both sides of the connecting plate 13.

[0036] A rubber ring 22 is provided on the outside of the gas delivery pipe 3, a clamping groove 23 is opened inside the sleeve 2, and the rubber ring 22 is adapted to the clamping groove 23.

[0037] In this embodiment, when it is necessary to remove the furnace cover 10 from one side of the furnace body 1, first rotate the control sleeve 16 so that the position of the ejector rod 17 corresponds to the position of the through hole 19. Then pull the handle 21. The handle 21 drives the connecting sleeve 14 and the connecting plate 13 to move and pushes the control sleeve 16 to move. Then the ejector rod 17 will pass through the through hole 19. At the same time, the control sleeve 16 and the top plate 18 cooperate to squeeze the push spring 20 sleeved outside the ejector rod 17. Then the connecting sleeve 14 drives the connecting groove 15 to move, so that the side wall of the connecting groove 15 squeezes the elastic piece 11, and then the elastic piece 11 gathers inward. When the push spring 20 is compressed to the limit, the elastic piece 11 no longer engages with the thread groove. Then continue to pull the handle 21, and the connecting sleeve 14 and the connecting rod 12 can be pulled out of the installation groove, thus realizing the rapid disassembly of the furnace cover 10. When it is necessary to install the furnace cover 10 on one side of the furnace body 1, align the installation groove opened on the furnace cover 10 with the installation groove opened on the furnace body 1. Then insert the connecting rod 12 and the connecting sleeve 14 into the installation groove. During the insertion process, the elastic piece 11 is squeezed and gathers inward. When the connecting plate 13 presses the furnace cover 10 tightly, the connecting sleeve 14 and the connecting rod 12 will be completely inserted into the installation groove. Then the elastic piece 11 will automatically reset and engage with the thread groove arranged in the installation groove. Then rotate the control sleeve 16 so that the position of the ejector rod 17 no longer corresponds to the position of the through hole 19, so that the ejector rod 17 forms a stable support for the top plate 18 and the control sleeve 16, strengthening the stability of the connection structure.

[0038] Please refer to Figures 4-6 , as an implementation manner of the quick-connecting device: The quick-connecting device includes a plugging rack 24, a mating groove 25 and a plugging groove 26. Both sides of the plugging rack 24 are slidably installed in the mating groove 25. The mating groove 25 is opened inside the mating sleeve 9. One end of the plugging rack 24 is inserted into the plugging groove 26. The plugging groove 26 is opened on the outer side of the gas delivery pipe 3.

[0039] A lead screw 27 is provided on the outer side of the sleeve 2. Opposite threads are symmetrically arranged at both ends of the lead screw 27, and the lead screw 27 is movably connected to the two mating sleeves 9 through threads respectively.

[0040] A driven wheel 28 is provided at one end of the lead screw 27. The driven wheel 28 is fixedly connected to one end of the lead screw 27. A secondary gear 29 is rotatably sleeved on the outer side of the sleeve 2. The secondary gear 29 meshes with the driven wheel 28. A motor 30 is provided on the outer side of the sleeve 2. The motor 30 is detachably installed on the outer side of the sleeve 2. A driving wheel 31 is provided at the output end of the motor 30. The driving wheel 31 meshes with the secondary gear 29.

[0041] More specifically, when it is necessary to connect the gas pipe 3 and the sleeve 2 provided on the furnace body 1, the motor 30 is first turned on. The motor 30 drives the sub-gear 29 provided on one side to rotate on the sleeve 2 through the driving wheel 31 connected to the output end, and then the sub-gear 29 drives each driven wheel 28 to rotate, thereby driving the lead screw 27 to rotate. Since opposite threads are provided at both ends of the lead screw 27, the two matching sleeves 9 will move inward at the same time. Due to the special structural design of the matching groove 25, when the matching groove 25 moves with the matching sleeve 9, it will drive the matching frame to move outward. When one end of the plug-in frame 24 is flush with the inner wall of the sleeve 2, the motor 30 is turned off, and then the gas pipe 3 is inserted into the sleeve 2 and one end of the gas pipe 3 is against the gasket 7. Then the motor 30 is turned on again to reverse the motor 30, and then the matching sleeve 9 will drive the plug-in frame 24 to The plug-in frame 24 is reset, and then one end of the plug-in frame 24 is inserted into the plug-in slot 26. When the plug-in frame 24 is fully inserted into the plug-in slot 26, the motor 30 is turned off, and then the hydraulic cylinder 5 installed on one side of the fixed plate 4 is turned on. Then the hydraulic cylinder 5 will synchronously push the matching sleeve 9 to slide along the sleeve 2 through the corresponding hydraulic rod 6 connected to the output end. At the same time, due to the special structure and connection relationship of the two matching grooves 25 and the plug-in frame 24, the two matching sleeves 9 will drive the plug-in frame 24 to slide along the sleeve 2, and then the plug-in frame 24 will move in the give way groove 8. Then the plug-in frame 24 will drive the gas pipe 3 to press the gasket 7 through the plug-in slot 26, thereby ensuring the sealing of the connection between the gas pipe 3 and the sleeve 2. At the same time, the multiple rubber rings 22 arranged on the outside of the gas pipe 3 will be engaged in the corresponding card slots 23, thereby further enhancing the sealing performance of the pipeline connection.

[0042] In summary, when the overall device is in use or operation: when it is necessary to remove the furnace cover 10 from one side of the furnace body 1, first rotate the control sleeve 16 so that the position of the ejector rod 17 corresponds to the position of the through hole 19, and then pull the handle 21. The handle 21 drives the connecting sleeve 14 and the connecting plate 13 to move and push the control sleeve 16 to move. Then, the ejector rod 17 will pass through the through hole 19. At the same time, the control sleeve 16 will cooperate with the top plate 18 to squeeze the push spring 20 sleeved outside the ejector rod 17. Then, the connecting sleeve 14 will drive the connecting groove 15 to move, so that the side wall of the connecting groove 15 squeezes the elastic piece 11, and then the elastic piece 11 will gather inward. When the push spring 20 is compressed to the limit, the elastic piece 11 will no longer engage with the thread groove. Then, continue to move the handle 21, and the connecting sleeve 14 and the connecting rod 12 can be pulled out of the installation groove, thus realizing the quick disassembly of the furnace cover 10. When it is necessary to install the furnace cover 10 on one side of the furnace body 1, align the installation groove opened on the furnace cover 10 with the installation groove opened on the furnace body 1, and then insert the connecting rod 12 and the connecting sleeve 14 into the installation groove. During the insertion process, the elastic piece 11 will be squeezed and gather inward. When the connecting plate 13 presses the furnace cover 10 tightly, the connecting sleeve 14 and the connecting rod 12 will be completely inserted into the installation groove. Then, the elastic piece 11 will automatically reset and engage with the thread groove provided in the installation groove. Then, rotate the control sleeve 16 so that the position of the ejector rod 17 no longer corresponds to the position of the through hole 19, so that the ejector rod 17 forms a stable support for the top plate 18 and the control sleeve 16, strengthening the stability of the connection structure.

[0043] When it is necessary to connect the gas pipe 3 and the sleeve 2 set on the furnace body 1, first turn on the motor 30. The motor 30 drives the sub-gear 29 set on one side to rotate on the sleeve 2 through the driving wheel 31 connected to the output end, and then the sub-gear 29 drives each driven wheel 28 to rotate, thereby driving the lead screw 27 to rotate. Since opposite threads are provided at both ends of the lead screw 27, the two matching sleeves 9 will move inward at the same time. Due to the special structural design of the matching groove 25, when the matching groove 25 moves with the matching sleeve 9, it will drive the matching frame to move outward. When one end of the plug-in frame 24 is flush with the inner wall of the sleeve 2, turn off the motor 30, and then insert the gas pipe 3 into the sleeve 2 and make one end of the gas pipe 3 against the gasket 7, and then turn on the motor 30 again to reverse the motor 30, and then the matching sleeve 9 will drive the plug-in frame 24 to reset , and then one end of the plug-in frame 24 will be inserted into the plug-in slot 26. When the plug-in frame 24 is fully inserted into the plug-in slot 26, the motor 30 is turned off, and then the hydraulic cylinder 5 installed on one side of the fixed plate 4 is turned on. Then the hydraulic cylinder 5 will synchronously push the matching sleeve 9 to slide along the sleeve 2 through the corresponding hydraulic rod 6 connected to the output end. At the same time, due to the special structure and connection relationship between the two matching grooves 25 and the plug-in frame 24, the two matching sleeves 9 will drive the plug-in frame 24 to slide along the sleeve 2, and then the plug-in frame 24 will move in the give way groove 8. Then the plug-in frame 24 will drive the gas pipe 3 to press the gasket 7 through the plug-in slot 26, thereby ensuring the sealing of the connection between the gas pipe 3 and the sleeve 2. At the same time, the multiple rubber rings 22 arranged on the outside of the gas pipe 3 will be engaged in the corresponding card slots 23, thereby further enhancing the sealing performance of the pipeline connection.

[0044] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A heat treatment device, comprising a furnace body (1), characterized in that: A sleeve (2) is provided on one side of the furnace body (1), one end of the sleeve (2) is connected to a quick-connect device, one end of the sleeve (2) is provided with a gas delivery pipe (3), and a sealing device is provided on the outside of the sleeve (2), the sealing device comprising a fixing plate (4), a hydraulic cylinder (5), a hydraulic rod (6), a gasket (7), a clearance groove (8) and a matching sleeve (9), the fixing plate (4) is fixedly arranged on the outside of the sleeve (2), one end of the hydraulic rod (6) is connected to the output end of the hydraulic cylinder (5), and the other end of the hydraulic rod (6) is connected to the matching sleeve (9), the clearance groove (8) is opened on the outside of the sleeve (2), and the matching sleeve (9) is provided. The sleeve (9) is arranged on the outside of the sleeve (2), the gasket (7) is installed on the inside of the sleeve (2), a furnace cover (10) is arranged on one side of the furnace body (1), and a quick-locking device is installed on one side of the furnace cover (10), the quick-locking device comprising an elastic sheet (11), a connecting rod (12), a connecting plate (13), a connecting sleeve (14) and a connecting groove (15), the elastic sheet (11) is arranged on the side wall of the connecting rod (12) along a thread line, the connecting sleeve (14) is sleeved on the outside of the connecting rod (12), the connecting plate (13) is connected to one side of the connecting sleeve (14), and the connecting groove (15) is opened on the outside of the connecting sleeve (14).

2. A heat treatment device according to claim 1, characterized in that: A control sleeve (16) is provided on one side of the connecting plate (13), and the control sleeve (16) is movably sleeved on the outside of the connecting rod (12). A push rod (17) is provided on one side of the control sleeve (16). A top plate (18) is provided at one end of the connecting rod (12), and a through hole (19) is provided on the top plate (18). The diameter of the through hole (19) is slightly larger than the diameter of the push rod (17).

3. A heat treatment device according to claim 2, characterized in that: A push spring (20) is provided on one side of the control sleeve (16). The push spring (20) is movably sleeved on the outside of the push rod (17), and one end of the push spring (20) is in contact connection with the top plate (18).

4. A heat treatment device according to claim 3, characterized in that: A handle (21) is provided on the outside of the connecting sleeve (14), and the handle (21) is fixedly connected to both sides of the connecting plate (13).

5. A heat treatment device according to claim 1, characterized in that: A rubber ring (22) is provided on the outside of the gas delivery pipe (3), a clamping groove (23) is provided on the inside of the sleeve (2), and the rubber ring (22) is matched with the clamping groove (23).

6. A heat treatment device according to any one of claims 1 to 5, characterized in that: The quick-connect device comprises a plug-in frame (24), a matching groove (25) and a plug-in groove (26); both sides of the plug-in frame (24) are slidably mounted in the matching groove (25); the matching groove (25) is arranged on the inner side of the matching sleeve (9); one end of the plug-in frame (24) is inserted into the plug-in groove (26); and the plug-in groove (26) is arranged on the outer side of the gas transmission pipe (3).

7. A heat treatment device according to claim 6, characterized in that: A lead screw (27) is arranged outside the sleeve (2), opposite threads are symmetrically arranged at both ends of the lead screw (27), and the lead screw (27) is movably connected to two matching sleeves (9) through threads.

8. A heat treatment device according to claim 7, characterized in that: A driven wheel (28) is provided at one end of the lead screw (27), and the driven wheel (28) is fixedly connected to one end of the lead screw (27). A secondary gear (29) is rotatably sleeved on the outer side of the sleeve (2), and the secondary gear (29) is meshed with the driven wheel (28). A motor (30) is provided on the outer side of the sleeve (2), and the motor (30) is detachably mounted on the outer side of the sleeve (2). A driving wheel (31) is provided at the output end of the motor (30), and the driving wheel (31) is meshed with the secondary gear (29).

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