Simple production expansion type heat treatment furnace

Abstract

The utility model relates to the technical field of production expansion type heat treatment furnaces, in particular to a simple production expansion type heat treatment furnace which comprises an aging furnace body, a heat circulation mechanism, a closing mechanism, a quenching mechanism and a clamping mechanism. One side of the aging furnace body and one side of the solid melting furnace body are each provided with a material preparation roller conveyor, the top end of the aging furnace body is connected with a smoke exhaust pipe, one end of the aging furnace body is connected with a circulating pipe, one end of the circulating pipe extends into the solid melting furnace body, and the top of the solid melting furnace body is provided with a first circulating fan. And the output end of the first circulating fan is connected with one end of the circulating pipe. The device is convenient for a user to carry out production expansion, is also convenient for the user to carry out heat treatment and quenching work, can carry out heat treatment and quenching work without approaching the user, and can also improve the use safety of the user.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of expansion type heat treatment furnace, concretely to a simple expansion type heat treatment furnace. BACKGROUND

[0002] The expansion type heat treatment furnace refers to a production facility that is upgraded or newly added to the original heat treatment furnace equipment to increase the heat treatment production capacity and efficiency in order to meet the demand for production scale expansion.

[0003] The existing part of the expansion type heat treatment furnace is not convenient for workpiece processing, and usually requires close operation by the user, thereby increasing the risk of use. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the above background art and provides a simple expansion type heat treatment furnace.

[0005] To achieve the above object, the utility model provides the following technical scheme: a simple expansion type heat treatment furnace, which comprises an aging furnace body, a heat circulation mechanism, a closing mechanism, a quenching mechanism and a clamping mechanism, one side of the aging furnace body is provided with a support, one side of the support is provided with a solid solution furnace body, one side of the aging furnace body and the solid solution furnace body is provided with a standby material roller conveyor, the top end of the aging furnace body is connected with an exhaust pipe, one end of the aging furnace body is connected with a circulation pipe, one end of the circulation pipe extends into the solid solution furnace body, the top of the solid solution furnace body is provided with a first circulating fan, and the output end of the first circulating fan is connected with one end of the circulation pipe.

[0006] Preferably, the heat circulation mechanism comprises a second circulating fan, a partition plate, a circulating piece, a first roller conveyor and a nozzle, the top of the aging furnace body and the solid solution furnace body is fixedly connected with a partition plate, both ends of the aging furnace body and the solid solution furnace body are fixedly connected with a circulating piece, and the circulating piece is located on both sides of the partition plate, the bottom end of the solid solution furnace body of the aging furnace body is provided with a first roller conveyor, the upper middle part of the aging furnace body and the solid solution furnace body is provided with a nozzle, and the nozzle is located at the top end of the partition plate, and the top end of the aging furnace body and the solid solution furnace body is provided with a second circulating fan, which can circulate heat, thereby reducing the consumption of energy and improving the quality of workpiece heat treatment.

[0007] Preferably, the control end of the standby material roller conveyor, the first roller conveyor, the first circulating fan and the second circulating fan is electrically connected with an external power supply through an external switch, which facilitates the user to control the device to work.

[0008] Preferably, the closing mechanism comprises a closing door, a first electric push rod and a first sliding block, both ends of the aging furnace body and the solid solution furnace body are provided with the closing door, both sides of the closing door are slidably connected with the first sliding block, one side of the first sliding block is fixedly connected with the aging furnace body and the solid solution furnace body respectively, the top end of the aging furnace body and the solid solution furnace body is symmetrically provided with the first electric push rod, and the output end of the first electric push rod is fixedly connected with the top end of the closing door respectively, so as to facilitate the user to open and close the closing door.

[0009] Preferably, the control end of the first electric push rod is electrically connected with an external power supply through an external switch, and the control end of the standby roller conveyor, the first roller conveyor, the first circulating fan and the second circulating fan is electrically connected with the external power supply through the external switch, so as to facilitate the user to control the device to work.

[0010] Preferably, the quenching mechanism comprises a quenching box, a material frame, a second roller conveyor, a second sliding block, a second electric push rod and a lifting frame, the bottom end of the support is provided with the quenching box, the bottom end of the support is provided with the second roller conveyor, the top end of the second roller conveyor is provided with the material frame, both ends of the second roller conveyor are slidably connected with the second sliding block, and the bottom end of the second sliding block is fixedly connected with the support, the bottom end of the support is symmetrically provided with the second electric push rod, and the output end of the second electric push rod is fixedly connected with one end of the second roller conveyor, and the middle part of the support is provided with the lifting frame, and the lifting frame is located at the top end of the material frame, so as to facilitate the user to perform the quenching work.

[0011] Preferably, the clamping mechanism comprises a clamping plate, a sliding rod, a reverse threaded rod, a motor, a buckle plate and a third electric push rod, both ends of the lifting frame are slidably connected with the clamping plate, and the bottom end of the clamping plate is located at both sides of the material frame, the top end of the clamping plate is symmetrically slidably connected with the sliding rod, and both ends of the sliding rod are fixedly connected with the lifting frame, one end of the lifting frame is provided with the motor, the middle part of the lifting frame is connected with the reverse threaded rod through a bearing, and both ends of the reverse threaded rod are slidably connected with the clamping plate, one end of the reverse threaded rod is fixedly connected with the output end of the motor, and the bottom end of the clamping plate is fixedly connected with the buckle plate, and one end of the buckle plate is buckled with the material frame, the top end of the support is symmetrically provided with the third electric push rod, and the output end of the third electric push rod is fixedly connected with the lifting frame, so as to facilitate the user to clamp the material frame and the workpiece.

[0012] Preferably, the control end of the second roller conveyor, the second electric push rod, the motor and the third electric push rod is electrically connected with an external power supply through an external switch, so as to facilitate the user to control the device to work.

[0013] Compared with the prior art, the device has the advantages that:

[0014] The workpiece can be heat treated through the solid melting furnace body, the aging furnace body, the nozzle and the second circulating fan, the workpiece can be conveniently moved through the standby material roller conveyor and the first roller conveyor, the nozzle can make heat evenly circulate in the aging furnace body and the solid melting furnace body through the partition plate, the circulating piece, the nozzle and the second circulating fan, so that the workpiece is evenly heated, and the heat treatment effect is guaranteed, the two ends of the aging furnace body and the solid melting furnace body are conveniently sealed through the closing door, the first electric push rod and the first sliding block, so that heat loss is avoided, and the energy consumption is reduced, the excess heat in the solid melting furnace body can be conveyed to the aging furnace body through the first circulating fan and the circulating pipe, so that the energy consumption of the aging furnace body is reduced, and energy is further saved, when the user needs to expand the production efficiency, the user only needs to continue to place the aging furnace body and the solid melting furnace body on one side of the standby material roller conveyor, which is very simple and convenient, when the solid melting furnace body is heat treated, the material frame is moved to the middle of the second roller conveyor through the first roller conveyor and the second roller conveyor, at this time, the third electric push rod controls the lifting frame and the clamping plate to descend, so that the buckles at the bottom end of the clamping plate are located on the two sides of the material frame, and then the motor is controlled to work, so that the two groups of clamping plates are close to each other through the reverse threaded rod, so that the buckles at the bottom end of the clamping plate are buckled on the two sides of the material frame, so that the material frame is fixed, and the material frame can also be clamped through the clamping plate, the material frame and the workpiece are lifted through the third electric push rod, so that the material frame is no longer attached to the second roller conveyor, at this time, the second roller conveyor is moved to one side of the support through the second electric push rod, and then the workpiece is placed in the quenching tank for quenching treatment through the third electric push rod, after the quenching treatment is completed, the material frame is moved to the top end of the second roller conveyor through the third electric push rod, and the second roller conveyor is reset through the second electric push rod, and then the material frame and the workpiece are placed on the top end of the second roller conveyor, the material frame and the workpiece are moved to the inside of the aging furnace body through the second roller conveyor and the first roller conveyor, and the heat treatment work is continued, the device is convenient for the user to expand production, and is also convenient for the user to perform heat treatment and quenching work, the device can perform heat treatment and quenching work without the user approaching, and the safety of the user in use can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the utility model;

[0016] Figure 2 It is a sectional perspective view of the utility model;

[0017] Figure 3 It is a sectional perspective view of the aging furnace body and the solid melting furnace body in the utility model;

[0018] Figure 4It is the cross section three-dimensional schematic view of the lifting frame and the clamping plate in the utility model.

[0019] Figure 5 It is the cross section three-dimensional schematic view of the support and the second roller conveyor in the utility model.

[0020] In the drawing: 1, aging furnace body; 2, support; 3, solid solution furnace body; 4, material preparation roller conveyor; 5, quenching tank; 6, smoke exhaust pipe; 7, partition plate; 8, circulating part; 9, first roller conveyor; 10, nozzle; 11, closing door; 12, first electric push rod; 13, first sliding block; 14, first circulating fan; 15, circulating pipe; 16, material frame; 17, second roller conveyor; 18, second sliding block; 19, second electric push rod; 20, lifting frame; 21, clamping plate; 22, slide rod; 23, reverse threaded rod; 24, motor; 25, buckling plate; 26, third electric push rod; 27, second circulating fan. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 The utility model provides an embodiment:

[0023] A simple and easy expansion type heat treatment furnace, including aging furnace body 1, heat circulation mechanism, closing mechanism, quenching mechanism and clamping mechanism, one side of aging furnace body 1 is provided with support 2, one side of support 2 is provided with solid solution furnace body 3, one side of aging furnace body 1 and solid solution furnace body 3 is provided with material preparation roller conveyor 4, the top of aging furnace body 1 is connected with smoke exhaust pipe 6, one end of aging furnace body 1 is connected with circulating pipe 15, and one end of circulating pipe 15 extends to the inside of solid solution furnace body 3, the top of solid solution furnace body 3 is provided with first circulating fan 14, and the output end of first circulating fan 14 is connected with one end of circulating pipe 15;

[0024] Further, the heat circulation mechanism comprises a second circulating fan 27, a partition plate 7, a circulating piece 8, a first roller conveyor 9 and a nozzle 10, the top of the aging furnace body 1 and the solid solution furnace body 3 is fixedly connected with the partition plate 7, the two ends of the aging furnace body 1 and the solid solution furnace body 3 are fixedly connected with the circulating piece 8, and the circulating piece 8 is located on the two sides of the partition plate 7 respectively, the bottom end of the solid solution furnace body 3 of the aging furnace body 1 is provided with the first roller conveyor 9, the middle and upper part of the aging furnace body 1 and the solid solution furnace body 3 is provided with the nozzle 10, and the nozzle 10 is located at the top end of the partition plate 7 respectively, the top end of the aging furnace body 1 and the solid solution furnace body 3 is provided with the second circulating fan 27, the material frame 16 and the workpiece are moved to the inside of the solid solution furnace body 3 through the preparation roller conveyor 4 and the first roller conveyor 9, at this time, the closing door 11 on the two sides of the solid solution furnace body 3 is moved down through the first electric push rod 12, so that the two sides of the solid solution furnace body 3 are in a sealed state, then the nozzle 10 generates heat, the air inside the solid solution furnace body 3 is circulated through the second circulating fan 27, so as to ensure that the workpiece is heated uniformly, thereby ensuring the heat treatment effect, the heat circulation can be realized, thereby reducing the consumption of energy, and the workpiece heat treatment quality can also be improved;

[0025] Further, the closing mechanism comprises a closing door 11, a first electric push rod 12 and a first sliding block 13, the two ends of the aging furnace body 1 and the solid solution furnace body 3 are provided with the closing door 11, the two sides of the closing door 11 are slidably connected with the first sliding block 13, and one side of the first sliding block 13 is fixedly connected with the aging furnace body 1 and the solid solution furnace body 3 respectively, the top end of the aging furnace body 1 and the solid solution furnace body 3 is symmetrically provided with the first electric push rod 12, and the output end of the first electric push rod 12 is fixedly connected with the top end of the closing door 11 respectively, when the material frame 16 and the workpiece are moved to the inside of the solid solution furnace body 3 or the aging furnace body 1, at this time, the closing door 11 on the two sides of the solid solution furnace body 3 is moved down through the first electric push rod 12, so that the two sides of the solid solution furnace body 3 are in a sealed state, thereby avoiding heat loss, thereby reducing the consumption of energy, and facilitating the user to open and close the closing door 11;

[0026] Further, the quenching mechanism comprises a quenching box 5, a material frame 16, a second roller conveyor 17, a second sliding block 18, a second electric push rod 19 and a lifting frame 20, the bottom end of the support 2 is provided with the quenching box 5, the bottom end of the support 2 is provided with the second roller conveyor 17, the top end of the second roller conveyor 17 is provided with the material frame 16, both ends of the second roller conveyor 17 are slidingly connected with the second sliding block 18, and the bottom end of the second sliding block 18 is fixedly connected with the support 2, the bottom end of the support 2 is symmetrically provided with the second electric push rod 19, and the output end of the second electric push rod 19 is fixedly connected with one end of the second roller conveyor 17, the middle part of the support 2 is provided with the lifting frame 20, and the lifting frame 20 is located at the top end of the material frame 16, so as to facilitate the user to perform the quenching work, the clamping mechanism comprises a clamping plate 21, a sliding rod 22, a reverse threaded rod 23, a motor 24, a buckle plate 25 and a third electric push rod 26, both ends of the lifting frame 20 are slidingly connected with the clamping plate 21, and the bottom end of the clamping plate 21 is located on both sides of the material frame 16, the top end of the clamping plate 21 is symmetrically slidingly connected with the sliding rod 22, and both ends of the sliding rod 22 are fixedly connected with the lifting frame 20, one end of the lifting frame 20 is provided with the motor 24, the middle part of the lifting frame 20 is connected with the reverse threaded rod 23 through a bearing, both ends of the reverse threaded rod 23 are slidingly connected with the clamping plate 21, one end of the reverse threaded rod 23 is fixedly connected with the output end of the motor 24, the bottom end of the clamping plate 21 is uniformly fixedly connected with the buckle plate 25, and one end of the buckle plate 25 is buckled to the material frame 16, the top end of the support 2 is symmetrically provided with the third electric push rod 26, and the output end of the third electric push rod 26 is fixedly connected with the lifting frame 20, after the material frame 16 and the workpiece are moved to the middle part of the second roller conveyor 17 through the first roller conveyor 9 and the second roller conveyor 17, at this time, the third electric push rod 26 controls the lifting frame 20 and the clamping plate 21 to descend, so that the buckle plate 25 at the bottom end of the clamping plate 21 is located on both sides of the material frame 16, then the motor 24 is controlled to work, the reverse threaded rod 23 can make the two groups of clamping plates 21 close to each other, so as to buckle the buckle plate 25 at the bottom end of the clamping plate 21 on both sides of the material frame 16, so as to fix the material frame 16, at the same time, the material frame 16 can also be clamped through the clamping plate 21, the material frame 16 and the workpiece are first moved upward through the third electric push rod 26, so that the material frame 16 is no longer attached to the second roller conveyor 17, at this time, the second roller conveyor 17 is moved to one side of the support 2 through the second electric push rod 19, then the workpiece is put into the inside of the quenching box 5 through the third electric push rod 26 to perform quenching treatment, after the quenching treatment is completed, the material frame 16 is moved to the top end of the second roller conveyor 17 through the third electric push rod 26, and the second roller conveyor 17 is controlled to reset through the second electric push rod 19, then the material frame 16 and the workpiece are placed on the top end of the second roller conveyor 17, so as to facilitate the user to clamp the material frame 16 and the workpiece;

[0027] It needs explanation, the control end of the material preparation roller conveyor 4, the first roller conveyor 9, the first circulating fan 14 and the second circulating fan 27 are electrically connected with the external power supply through external switch, the control end of the first electric push rod 12 is electrically connected with the external power supply through external switch, the control end of the material preparation roller conveyor 4, the first roller conveyor 9, the first circulating fan 14 and the second circulating fan 27 are electrically connected with the external power supply through external switch, which is convenient for the user to control the device to work, the control end of the second roller conveyor 17, the second electric push rod 19, the motor 24 and the third electric push rod 26 are electrically connected with the external power supply through external switch, which is convenient for the user to control the device to work.

[0028] The user places the material frame 16 on the standby roller conveyor 4 on one side of the solid melting furnace body 3, and then places the workpiece in the material frame 16, and then moves the material frame 16 and the workpiece to the inside of the solid melting furnace body 3 through the standby roller conveyor 4 and the first roller conveyor 9. At this time, the first electric push rod 12 is controlled to move the closing door 11 on both sides of the solid melting furnace body 3 downward, so that the two sides of the solid melting furnace body 3 are in a sealed state, thereby avoiding heat loss and reducing energy consumption. Then the nozzle 10 generates heat, and the second circulating fan 27 circulates the air in the solid melting furnace body 3, thereby ensuring uniform heating of the workpiece and ensuring the heat treatment effect. After the heat treatment is completed, the user controls the closing door 11 on one side of the aging furnace body 1 to open through the first electric push rod 12, and then moves the material frame 16 and the workpiece to the middle of the second roller conveyor 17 through the first roller conveyor 9 and the second roller conveyor 17. At this time, the third electric push rod 26 controls the lifting frame 20 and the clamping plate 21 to descend, so that the buckle plate 25 at the bottom end of the clamping plate 21 is located on both sides of the material frame 16. Then the motor 24 is controlled to work, and the reverse threaded rod 23 can make the two sets of clamping plates 21 close to each other, so that the buckle plate 25 at the bottom end of the clamping plate 21 is buckled on both sides of the material frame 16, thereby fixing the material frame 16. At the same time, the material frame 16 can also be clamped through the clamping plate 21. The third electric push rod 26 first moves the material frame 16 and the workpiece upward, so that the material frame 16 is no longer attached to the second roller conveyor 17. At this time, the second roller conveyor 17 is moved to one side of the support 2 through the second electric push rod 19. Then the workpiece is placed in the quenching box 5 for quenching treatment through the third electric push rod 26. After the quenching treatment is completed, the material frame 16 is moved to the top end of the second roller conveyor 17 through the third electric push rod 26. The second roller conveyor 17 is reset through the second electric push rod 19, and then the material frame 16 and the workpiece are placed on the top end of the second roller conveyor 17. The material frame 16 and the workpiece are moved to the inside of the aging furnace body 1 through the second roller conveyor 17 and the first roller conveyor 9, and the heat treatment work is continued. The user places another set of material frame 16 and workpiece in the inside of the solid melting furnace body 3 for heat treatment work. When the first set of material frame 16 and workpiece are heat treated in the inside of the solid melting furnace body 3, the first circulating fan 14 and the circulating pipe 15 can reduce the excess heat and deliver it to the inside of the aging furnace body 1, thereby preheating the aging furnace body 1 and reducing energy consumption. When the third set of material frame 16 and workpiece are heat treated in the inside of the solid melting furnace body 3, the first circulating fan 14 and the circulating pipe 15 can deliver the excess heat in the inside of the solid melting furnace body 3 to the aging furnace body 1, thereby reducing the energy consumption of the aging furnace body 1 and further saving energy. When the user needs to expand production efficiency, only the aging furnace body 1 and the solid melting furnace body 3 need to be continued on one side of the standby roller conveyor 4, which is very simple and convenient. After the workpiece heat treatment in the inside of the aging furnace body 1 is completed, the closing door 11 is opened through the first electric push rod 12,The material frame 16 and the workpiece are moved out of the aging furnace body 1 through the first roller conveyor 9 and the preparation roller conveyor 4, and the heat treatment work of the next group of workpieces can be carried out, the device is convenient for users to expand production, and is also convenient for users to carry out the heat treatment and quenching work, the device can carry out the heat treatment and quenching work without the user approaching, and the safety of the user using the device can be improved.

[0029] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A simple expandable heat treatment furnace, characterized by comprising: The utility model provides an aging furnace body (1), heat circulation mechanism, closing mechanism, quenching mechanism and clamping mechanism, one side of aging furnace body (1) is provided with support (2), one side of support (2) is provided with solid solution furnace body (3), one side of aging furnace body (1) and solid solution furnace body (3) is provided with spare material roller conveyor (4), the top of aging furnace body (1) is connected with flue (6), one end of aging furnace body (1) is connected with circulation pipe (15), and one end of circulation pipe (15) extends to the inside of solid solution furnace body (3), the top of solid solution furnace body (3) is provided with first circulating fan (14), and the output of first circulating fan (14) is connected with one end of circulation pipe (15).

2. The easily expandable heat treatment furnace according to claim 1, characterized in that: The heat circulation mechanism includes a second circulating fan (27), a partition plate (7), a circulating member (8), a first roller conveyor (9), and a nozzle (10). The top of the aging furnace body (1) and the solid solution furnace body (3) is fixedly connected with a partition plate (7). The two ends of the aging furnace body (1) and the solid solution furnace body (3) are fixedly connected with a circulating member (8), and the circulating member (8) is located on both sides of the partition plate (7), respectively. The bottom of the solid solution furnace body (3) of the aging furnace body (1) is provided with a first roller conveyor (9). The middle and upper parts of the aging furnace body (1) and the solid solution furnace body (3) are provided with a nozzle (10), and the nozzle (10) is located at the top end of the partition plate (7), respectively. The top of the aging furnace body (1) and the solid solution furnace body (3) is provided with a second circulating fan (27).

3. The easily expandable heat treatment furnace according to claim 2, wherein: The control ends of the spare material roller conveyor (4), the first roller conveyor (9), the first circulating fan (14), and the second circulating fan (27) are electrically connected with the external power source through external switches.

4. The easily expandable heat treatment furnace according to claim 1, characterized in that: The closing mechanism includes a closing door (11), a first electric push rod (12), and a first sliding block (13). The two ends of the aging furnace body (1) and the solid solution furnace body (3) are provided with a closing door (11). The two sides of the closing door (11) are slidingly connected with a first sliding block (13), and one side of the first sliding block (13) is fixedly connected with the aging furnace body (1) and the solid solution furnace body (3), respectively. The top of the aging furnace body (1) and the solid solution furnace body (3) is symmetrically provided with a first electric push rod (12), and the output end of the first electric push rod (12) is fixedly connected with the top end of the closing door (11), respectively.

5. The easily expandable heat treatment furnace according to claim 4, wherein: The control ends of the first electric push rod (12) are electrically connected with the external power source through external switches.

6. The easily expandable heat treatment furnace according to claim 1, characterized in that: The quenching mechanism comprises a quenching box (5), a material frame (16), a second roller conveyor (17), a second sliding block (18), a second electric push rod (19) and a lifting frame (20), the bottom end of the support (2) is provided with the quenching box (5), the bottom end of the support (2) is provided with the second roller conveyor (17), the top end of the second roller conveyor (17) is provided with the material frame (16), both ends of the second roller conveyor (17) are slidably connected with the second sliding block (18), and the bottom end of the second sliding block (18) is fixedly connected with the support (2), the bottom end of the support (2) is symmetrically provided with the second electric push rod (19), and the output end of the second electric push rod (19) is fixedly connected with one end of the second roller conveyor (17), the middle part of the support (2) is provided with the lifting frame (20), and the lifting frame (20) is located at the top end of the material frame (16).

7. The easily expandable heat treatment furnace according to claim 6, characterized in that: The clamping mechanism comprises a clamping plate (21), a sliding rod (22), a reverse threaded rod (23), a motor (24), a buckle plate (25) and a third electric push rod (26), both ends of the lifting frame (20) are slidably connected with the clamping plate (21), and the bottom end of the clamping plate (21) is located on both sides of the material frame (16), the top end of the clamping plate (21) is symmetrically slidably connected with the sliding rod (22), and both ends of the sliding rod (22) are fixedly connected with the lifting frame (20), one end of the lifting frame (20) is provided with the motor (24), the middle part of the lifting frame (20) is connected with the reverse threaded rod (23) through a bearing, and both ends of the reverse threaded rod (23) are slidably connected with the clamping plate (21), one end of the reverse threaded rod (23) is fixedly connected with the output end of the motor (24), the bottom end of the clamping plate (21) is uniformly fixedly connected with the buckle plate (25), and one end of the buckle plate (25) is buckled with the material frame (16), the top end of the support (2) is symmetrically provided with the third electric push rod (26), and the output end of the third electric push rod (26) is fixedly connected with the lifting frame (20).

8. The easily expandable heat treatment furnace according to claim 7, characterized in that: The control ends of the second roller conveyor (17), the second electric push rod (19), the motor (24) and the third electric push rod (26) are electrically connected with an external power source through an external switch.

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