Push plate furnace for metal smelting aftertreatment

Abstract

The invention relates to the technical field of push plate furnaces, and discloses a push plate furnace for metal smelting aftertreatment, which is characterized by comprising a foundation and a hearth arranged on the foundation, a heating rod assembly is arranged at the upper end of an inner cavity of the hearth, and a fan corresponding to the heating rod assembly is mounted at the top end of the hearth; a frame type heating side pipe is arranged in an inner cavity of the hearth, the heating side pipe is used for being arranged outside the side face of a workpiece in a sleeving mode, nozzles are evenly arranged on the inner side of the heating side pipe, a heat flow guiding component is arranged on the inner side of the hearth, and the heat flow guiding component comprises a side cavity arranged on the inner side of the side wall of the inner cavity of the hearth. According to the push plate furnace for metal smelting aftertreatment, through mutual cooperation of the arranged frame type heating side pipe, the heat flow guide component and the multiple supporting rollers for supporting the workpiece, the workpiece can be comprehensively heated only by arranging a heating rod assembly in one direction, the contact area is small, the workpiece can be evenly heated, energy consumption is reduced, and the service life of the workpiece is prolonged. And energy conservation and emission reduction are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of pusher furnaces, in particular to a pusher furnace for post-processing of metal smelting. Background Art

[0002] Post-metallurgical processing requires precise temperature control to eliminate residual stress in castings, optimize metallographic structures, or achieve surface modification. Pusher furnaces, with their continuous loading and unloading capabilities and controllable atmosphere, have become core equipment for heat treatment processes such as annealing and aging. Existing pusher furnaces typically rely on high-temperature resistant trays to support the workpieces. Hydraulic push rods drive the trays on tracks, moving them step-by-step through the preheating, heating, and cooling zones. The heating system typically utilizes a combination of overhead resistance bands and sidewall silicon-carbon rods, supplemented by forced convection fans to enhance heat exchange efficiency.

[0003] Due to the solid support of the material tray, traditional push-plate furnaces form a significant heat-shielded area at the bottom of the workpiece. Even if auxiliary bottom heating is added, it is difficult to completely eliminate the temperature difference. To compensate for uniformity, some existing solutions are forced to arrange redundant heating units in multiple directions on the top, sides, and bottom. This not only increases the equipment manufacturing cost, but also causes some ineffective energy consumption due to the cross-overlap of heat radiation, which is not conducive to energy conservation and environmental protection. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology has the disadvantages of poor heating uniformity and high energy consumption of metal parts. For this reason, we propose a push plate furnace for post-processing of metal smelting.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a push plate furnace for post-processing of metal smelting, comprising a foundation and a furnace arranged on the foundation, a heating rod assembly being arranged at the upper end of the furnace cavity, and a fan corresponding to the heating rod assembly being installed at the top end of the furnace; The furnace cavity is provided with a frame-type heating side tube, the heating side tube is used to be sleeved on the outside of the side of the workpiece, and nozzles are evenly arranged on the inner side of the heating side tube. A heat flow guiding component is provided on the inner side of the furnace cavity, and the heat flow guiding component includes a side cavity provided on the inner side of the side wall of the furnace cavity, the upper end of the side cavity corresponds to and is connected with the upper end of the furnace cavity, one end of the fan corresponds to the side cavity, and a bottom cavity connected with the side cavity is provided on the inner side of the bottom of the furnace cavity, and the bottom wall of the furnace cavity is provided with a through hole connected with the bottom cavity. A telescopic tube that can be longitudinally extended is provided on the side of the furnace cavity, one end of the telescopic tube is connected with the heating side tube, and the other end is connected with the side cavity; A push plate is horizontally movably provided at the bottom of the furnace cavity, a driving source for driving the displacement of the push plate is provided at one end of the base, a through slot is provided at one end of the push plate, a support roller for supporting the workpiece is evenly rotated in the through slot, and a driving component for driving the heating side tube to rise and fall is provided on the side of the push plate.

[0006] Preferably, the telescopic tube includes an upper tube arranged on the side wall of the furnace cavity, a lower tube is vertically and movably inserted into the lower end of the upper tube, and the side surface of the heating side tube is fixed to the lower end of the lower tube.

[0007] Preferably, the driving assembly includes a push arm arranged on the side of the push plate and protruding from the side wall of the push plate, a connecting piece is installed on the lower tube, a linkage arm is movably arranged on the connecting piece, a sliding seat corresponding to the linkage arm is movably connected to the side of the bottom of the furnace cavity, the lower end of the linkage arm is movably connected to the sliding seat, and one end of the sliding seat corresponds to the protruding part of the push arm, a fixed seat corresponding to the sliding seat is provided at the bottom of the furnace cavity, and a first elastic piece is provided between one side of the sliding seat and the side wall of the fixed seat.

[0008] Preferably, a pair of guide rods are provided on the side walls of the fixed seat, and the sliding seat is movably sleeved on the guide rods.

[0009] Preferably, the first elastic member is a spring, and the spring is sleeved outside the guide rod.

[0010] Preferably, a stop seat for limiting the push plate is provided at one end of the bottom of the furnace, a driving cavity is provided on the side wall of the push plate, and a sliding frame is movably connected to the inner side of the driving cavity along the length direction of the push plate, and a second elastic member is provided between the end of the sliding frame close to the stop seat and the inner wall of the driving cavity close to the stop seat, the push arm is fixed to the side wall of the sliding frame, and a driving rod extending to the outside of the push plate is provided at the end of the sliding frame away from the stop seat, and a traction frame for connecting to the output shaft of the driving source is provided at the end of the driving rod away from the sliding frame.

[0011] Preferably, the end of the support roller corresponds to the driving cavity, the end of the support roller is provided with a gear located in the inner cavity of the driving cavity, and the sliding frame is provided with a plurality of racks corresponding to the gears one by one.

[0012] Preferably, an opening for the push plate to enter and exit is provided at one end of the furnace close to the driving source, and an insulating furnace door is hinged at the upper end of the opening, and when the insulating furnace door is in a vertical state, the distance between its bottom and the bottom of the furnace cavity is adapted to the thickness of the push plate.

[0013] Preferably, the driving source is a servo hydraulic cylinder.

[0014] Preferably, an inclined second diverter plate is provided on one side of the upper end of the furnace inner cavity close to the side cavity; A first diverter plate corresponding to the upper end of the upper tube is provided on the inner side of the side cavity, and the first diverter plate is inclined.

[0015] Technical effects and advantages of the present invention: In the present invention, by setting up a frame-type heating side tube, a heat flow guiding component and a plurality of support rollers for supporting the workpiece, it is possible to achieve comprehensive heating of the workpiece by setting a heating rod assembly in only one direction. The contact between the support roller and the workpiece is line contact. Compared with the surface contact in the prior art, the contact area is smaller, which is conducive to uniform heating of the workpiece. It is not only low in cost, but also has a low cross-overlap rate of heat radiation, saves energy consumption, and is conducive to energy conservation and emission reduction.

[0016] In the present invention, the driving component is arranged in a displacement linkage with the push plate, which can realize the automatic lowering of the heating side tube after the push plate pushes the workpiece into the inner cavity of the furnace, so that it is sleeved on the outer periphery of the side of the workpiece to facilitate heating of the side of the workpiece; further, with the arrangement of the stop seat, the sliding frame, the second elastic member, and the driving rod, the workpiece can be kept stationary after the push plate enters the inner cavity of the furnace to realize the lowering of the heating side tube, thereby reducing the distance between the nozzle and the workpiece in multiple directions as much as possible, and utilizing rapid heating; the arrangement of the gear and the rack can realize the rotation of the support roller when the sliding frame is displaced, and can control the reciprocating displacement of the workpiece when the heating side tube is located on the side of the workpiece, so that the contact part of the bottom of the workpiece and the support roller has the opportunity to be exposed, thereby realizing more comprehensive heating, and due to the reciprocating displacement of the workpiece, the heating side tube can also be lifted and lowered back and forth, and the reciprocating lifting stage is always located on the side of the workpiece, which is convenient for uniform heating at different positions on the side of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention in a disassembled state; Figure 3 Schematic diagram of the side cross-sectional structure of the furnace of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the structure in a three-dimensional state on the basis; Figure 5 This is a structural diagram of the present invention in which the sliding seat and the heating side pipe are in cooperation; Figure 6 This is a structural diagram of the push plate, the stop seat, and the heating side pipe in the present invention in a coordinated state; Figure 7 This is a structural diagram of the push plate of the present invention in a disassembled state.

[0018] Legend: 1. Foundation; 2. Furnace; 3. Driving source; 4. Push plate; 5. Fan; 6. Insulated furnace door; 7. Bottom cavity; 8. Heating side pipe; 9. Heating rod assembly; 10. Side cavity; 11. Through hole; 12. Upper tube; 13. Lower tube; 14. First diverter plate; 15. Second diverter plate; 16. Linkage arm; 17. Nozzle; 18. Connecting piece; 19. Fixed seat; 20. Guide rod; 21. First elastic piece; 22. Sliding seat; 23. Stop seat; 24. Through groove; 25. Support roller; 26. Traction frame; 27. Driving rod; 28. Driving cavity; 29. ​​Sliding frame; 30. Gear; 31. Second elastic piece; 32. Push arm; 33. Rack. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0020] Reference Figures 1-4 As shown, a push plate furnace for post-processing of metal smelting comprises a base 1 and a furnace 2 arranged on the base 1, a heating rod assembly 9 is provided at the upper end of the inner cavity of the furnace 2, a fan 5 corresponding to the heating rod assembly 9 is installed at the top of the furnace 2, a push plate 4 is horizontally movably provided at the bottom of the inner cavity of the furnace 2, a driving source 3 for driving the displacement of the push plate 4 is provided at one end of the base 1, the driving source 3 is preferably a servo hydraulic cylinder, an opening for the push plate 4 to enter and exit is provided at one end of the furnace 2 close to the driving source 3, an insulating furnace door 6 is hinged at the upper end of the opening, and when the insulating furnace door 6 is in a vertical state, the distance between the bottom of the heat insulation furnace door 6 and the bottom of the inner cavity of the furnace 2 is adapted to the thickness of the push plate 4; like Figure 2-Figure 6As shown, unlike the prior art, a frame-type heating side tube 8 is provided in the inner cavity of the furnace 2, which is specifically arc-shaped or rectangular, and its internal size is larger than the workpiece size. The heating side tube 8 is used to be sleeved on the outside of the side of the workpiece to heat the side of the workpiece. Nozzles 17 are evenly arranged on the inner side of the heating side tube 8. A heat flow guiding component is provided on the inner side of the furnace 2. The heat flow guiding component includes a side cavity 10 provided on the inner side of the side wall of the inner cavity of the furnace 2. The upper end of the side cavity 10 corresponds to and is connected to the upper end of the inner cavity of the furnace 2. An inclined second diverter plate 15 is provided on the side of the upper end of the inner cavity of the furnace 2 close to the side cavity 10. One end of the fan 5 is connected to the side cavity 10. 0, a first diverter plate 14 corresponding to the upper end of the upper tube 12 is provided on the inner side of the side cavity 10, and the first diverter plate 14 is inclined. A bottom cavity 7 communicating with the side cavity 10 is provided on the inner side of the bottom of the inner cavity of the furnace 2, and a through hole 11 communicating with the bottom cavity 7 is provided on the bottom wall of the inner cavity of the furnace 2. A longitudinally retractable telescopic tube is provided on the side of the inner cavity of the furnace 2, one end of the telescopic tube is communicated with the heating side tube 8, and the other end is communicated with the side cavity 10. Specifically, the telescopic tube includes an upper tube 12 provided on the side wall of the inner cavity of the furnace 2, and a lower tube 13 is vertically movably inserted inside the lower end of the upper tube 12, and the side of the heating side tube 8 is fixed to the lower end of the lower tube 13; like Figure 3-Figure 7 As shown, in order to reduce the contact area with the workpiece, a longitudinal through groove 24 is provided at one end of the push plate 4, and a plurality of support rollers 25 for supporting the workpiece are evenly rotated in the through groove 24. In order to realize the lifting and lowering of the heating side tube 8, a driving component for driving the lifting and lowering of the heating side tube 8 is provided on the side of the push plate 4. As an embodiment, the driving component includes a push arm 32 provided on the side of the push plate 4 and protruding from the side wall of the push plate 4, a connecting piece 18 is installed on the lower tube 13, and a linkage arm 16 is provided on the connecting piece 18 through a pin shaft. The side of the bottom of the inner cavity of the furnace 2 is movably connected with a sliding seat 22 corresponding to the linkage arm 16, and the lower end of the linkage arm 16 is connected to the sliding seat 22. The upper end is rotatably connected by a pin shaft, and one end of the sliding seat 22 corresponds to the protruding part of the push arm 32. A pair of fixed seats 19 corresponding to the sliding seat 22 are provided at each end of the bottom of the inner cavity of the furnace 2. The sliding seat 22 is located between the two fixed seats 19 on the same side. A first elastic member 21 is provided between one side of the sliding seat 22 and the side wall of the fixed seat 19 away from the driving source 3. The first elastic member 21 is preferably a spring, so that when the heating side tube 8 moves downward, the first elastic member 21 contracts. At the same time, in order to increase the stability of the sliding seat 22 and the first elastic member 21, a pair of guide rods 20 are provided on the side wall of the fixed seat 19, and the sliding seat 22 is movably sleeved on the guide rods 20.

[0021] like Figure 3-Figure 4 、 Figure 6-Figure 7As shown, in order to keep the workpiece stationary when the heating side tube 8 moves downward, a stop seat 23 for limiting the push plate 4 is provided at one end of the bottom of the furnace 2, and a driving cavity 28 is provided on the side wall of the push plate 4. The inner side of the driving cavity 28 is movably connected with a sliding frame 29 along the length direction of the push plate 4. A second elastic member 31 is provided between the end of the sliding frame 29 close to the stop seat 23 and the inner wall of the end of the inner cavity of the driving cavity 28 close to the stop seat 23. The second elastic member 31 is preferably a spring. The push arm 32 is fixed to the side wall of the sliding frame 29, and the push arm 32 will not contact the sliding seat 22 before the push plate 4 contacts the stop seat 23. The end of the sliding frame 29 away from the stop seat 23 is provided with a driving rod 27 extending to the outside of the push plate 4. The driving rod 27 and the push plate 4 are movably guided. The end of the driving rod 27 away from the sliding frame 29 is provided with a traction frame 26 for being bolted to the output shaft of the driving source 3, and the second elastic member 31 is configured as follows: before the push plate 4 contacts the stop seat 23, when the driving source 3 pushes the push plate 4 to move through the traction frame 26, the second elastic member 31 will not shrink or shrink slightly. The setting of this part can realize the downward movement of the heating side tube 8 after the workpiece is stationary, and there is no need to move the heating side tube 8 downward during the displacement of the workpiece. Therefore, there is no need to set the heating side tube 8 to a larger size, and when the heating side tube 8 is located outside the side of the workpiece, the driving source 3 can also be controlled to reciprocate and drive the sliding frame 29 to move, and then the push arm 32 reciprocates to push the sliding seat 22, and then the heating side tube 8 can be reciprocated and slightly raised and lowered, so as to adapt to the heating of different heights of the side of the workpiece.

[0022] As shown in Figure 7, in order to achieve a small reciprocating movement of the workpiece when the heating side tube 8 is located on the side of the workpiece and moves back and forth, the end of the support roller 25 corresponds to the drive cavity 28, and the end of the support roller 25 is provided with a gear 30 located in the inner cavity of the drive cavity 28, and the sliding frame 29 is provided with a plurality of racks 33 corresponding to the gears 30 one by one, and the racks 33 are not engaged with the gears 30 initially.

[0023] It should be noted that the above-mentioned structural components located inside the furnace 2 are all made of high-temperature resistant materials. Since they are conventional technical means, this application will not go into too much detail.

[0024] Overall working principle: When in use, the metal workpiece to be heated is placed on a plurality of supporting rollers 25 on the push plate 4, and then the driving source 3 is controlled to drive the push plate 4 to move horizontally into the furnace 2 through the traction frame 26. Due to the elastic force of the second elastic member 31 at the initial time, the sliding frame 29 will not compress the second elastic member 31 too much, and the second elastic member 31 will only shrink slightly. After entering, the heat-insulating furnace door 6 is closed. Initially, the push plate 4 drives the workpiece to move to the vicinity of the entrance of the furnace 2. At this time, the workpiece does not correspond to the heating side tube 8, the through hole 11 and the heating rod assembly 9. At this time, preheating is carried out for a period of time, and then the driving source 3 is continued to be controlled to drive the push plate 4 to move inward. One end of the push plate 4 is blocked and limited by the stop seat 23. At this time, the workpiece and the heating The hot side tube 8 is matched, and the inner cavity size of the heating side tube 8 is larger than the size of the workpiece. At this time, since the push plate 4 is blocked, the driving source 3 continues to push the traction frame 26, and the traction frame 26 will drive the sliding frame 29 to displace and compress the second elastic member 31 through the driving rod 27, and when the sliding frame 29 is displaced, the push arm 32 will be driven to displace, and then the push arm 32 pushes the sliding seat 22, and the sliding seat 22 drives the linkage arm 16 to tilt and pull down the connecting member 18, and the first elastic member 21 will shrink, and the connecting member 18 drives the heating side tube 8 to move downward through the lower tube 13, and then the heating side tube 8 can be sleeved on the outside of the side of the workpiece, and the fan 5 blows downward, part of the hot air directly acts on the upper surface of the workpiece, and part of the hot air enters the side under the action of the second diverter plate 15 The hot air in the side chamber 10 enters the upper tube 12 under the action of the first diverter plate 14, and then enters the heating side tube 8 through the lower tube 13, and finally is blown to the side of the workpiece through the nozzle 17. The other part of the hot air in the side chamber 10 enters the bottom chamber 7, and then is blown upward to the lower surface of the workpiece through the through hole 11. In the initial downward displacement stage of the heating side tube 8, the rack 33 is not engaged with the gear 30, so the support roller 25 does not drive the workpiece to move. When the rack 33 is engaged with the gear 30 after being sleeved on the outside of the side of the workpiece, the driving source 3 is controlled to drive the traction frame 26 to move back and forth in a small amplitude, so that the heating side tube 8 moves back and forth, and because the sliding frame 29 is driven by the driving rod 27 to move back and forth, Therefore, the rack 33 drives the support roller 25 to move back and forth through the gear 30, and then the support roller 25 drives the workpiece to move back and forth slightly, so that the contact part between the bottom of the workpiece and the support roller 25 can be exposed, and the reciprocating movement of the heating side tube 8 can also uniformly heat the different heights of the side of the workpiece, thereby achieving more comprehensive heating and facilitating uniform heating. It should be noted that during the reciprocating movement of the heating side tube 8 and the workpiece, the second elastic member 31 is in a contracted state. Therefore, the push plate 4 remains stationary during the reciprocating movement of the heating side tube 8 and the workpiece. After the heating is finally completed, the driving source 3 pulls the push plate 4 outward, the second elastic member 31 is reset, the heating side tube 8 rises, and then the push plate 4 drives the workpiece to move outward, and it can be cooled after being moved out.

[0025] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should all belong to the protection scope of the present application.

Claims

1. A push plate furnace for post-processing of metal smelting, characterized in that: It comprises a foundation (1) and a furnace (2) arranged on the foundation (1), a heating rod assembly (9) being arranged at the upper end of the inner cavity of the furnace (2), and a fan (5) corresponding to the heating rod assembly (9) being installed at the top end of the furnace (2); The inner cavity of the furnace (2) is provided with a frame-type heating side tube (8), the heating side tube (8) is used to be sleeved on the outside of the side of the workpiece, and the inner side of the heating side tube (8) is evenly provided with a nozzle (17), and the inner side of the furnace (2) is provided with a heat flow guiding component, and the heat flow guiding component includes a side cavity (10) arranged on the inner side of the side wall of the inner cavity of the furnace (2), the upper end of the side cavity (10) corresponds to and is connected with the upper end of the inner cavity of the furnace (2), one end of the fan (5) corresponds to the side cavity (10), the inner side of the bottom of the inner cavity of the furnace (2) is provided with a bottom cavity (7) connected with the side cavity (10), the bottom wall of the inner cavity of the furnace (2) is provided with a through hole (11) connected with the bottom cavity (7), and the side of the inner cavity of the furnace (2) is provided with a telescopic tube that can be longitudinally extended, one end of the telescopic tube is connected with the heating side tube (8), and the other end is connected with the side cavity (10); A push plate (4) is horizontally movable at the bottom of the inner cavity of the furnace (2), a driving source (3) for driving the push plate (4) to move is provided at one end of the base (1), a through groove (24) is provided at one end of the push plate (4), a support roller (25) for supporting the workpiece is uniformly rotated in the through groove (24), and a driving component for driving the heating side tube (8) to rise and fall is provided on the side of the push plate (4).

2. The pusher furnace for post-processing of metal smelting according to claim 1, characterized in that: The telescopic tube comprises an upper tube (12) arranged on the inner cavity side wall of the furnace (2), a lower tube (13) is vertically and movably inserted into the lower end of the upper tube (12), and the side surface of the heating side tube (8) is fixed to the lower end of the lower tube (13).

3. The pusher furnace for post-processing of metal smelting according to claim 2, characterized in that: The driving assembly includes a push arm (32) arranged on the side of the push plate (4) and protruding from the side wall of the push plate (4), a connecting member (18) is installed on the lower tube (13), and a linkage arm (16) is movably arranged on the connecting member (18), and a sliding seat (22) corresponding to the linkage arm (16) is movably connected to the side of the bottom of the inner cavity of the furnace (2), the lower end of the linkage arm (16) is movably connected to the sliding seat (22), and one end of the sliding seat (22) corresponds to the protruding part of the push arm (32), and a fixed seat (19) corresponding to the sliding seat (22) is arranged at the bottom of the inner cavity of the furnace (2), and a first elastic member (21) is arranged between one side of the sliding seat (22) and the side wall of the fixed seat (19).

4. The pusher furnace for post-processing of metal smelting according to claim 3, characterized in that: A pair of guide rods (20) are provided on the side walls of the fixed seat (19), and the sliding seat (22) is movably sleeved on the guide rods (20).

5. The pusher furnace for post-processing of metal smelting according to claim 4, characterized in that: The first elastic member (21) is a spring, and the spring is sleeved outside the guide rod (20).

6. The pusher furnace for post-processing of metal smelting according to claim 3, characterized in that: A stop seat (23) for limiting the push plate (4) is provided at one end of the bottom of the furnace (2), a driving cavity (28) is provided on the side wall of the push plate (4), and a sliding frame (29) is movably connected to the inner side of the driving cavity (28) along the length direction of the push plate (4), a second elastic member (31) is provided between one end of the sliding frame (29) close to the stop seat (23) and the inner wall of one end of the inner cavity of the driving cavity (28) close to the stop seat (23), the push arm (32) is fixed to the side wall of the sliding frame (29), and a driving rod (27) extending to the outside of the push plate (4) is provided at one end of the sliding frame (29) away from the stop seat (23), and a traction frame (26) for connecting to the output shaft of the driving source (3) is provided at one end of the driving rod (27) away from the sliding frame (29).

7. The pusher furnace for post-processing of metal smelting according to claim 6, characterized in that: The end of the support roller (25) corresponds to the driving cavity (28), and the end of the support roller (25) is provided with a gear (30) located in the inner cavity of the driving cavity (28), and the sliding frame (29) is provided with a plurality of racks (33) corresponding to the gears (30) one by one.

8. The pusher furnace for post-processing of metal smelting according to any one of claims 1 to 7, characterized in that: An opening for the push plate (4) to enter and exit is provided at one end of the furnace (2) close to the driving source (3), and a heat-insulating furnace door (6) is hingedly connected to the upper end of the opening. When the heat-insulating furnace door (6) is in a vertical state, the distance between the bottom of the heat-insulating furnace door (6) and the bottom of the furnace (2) inner cavity is adapted to the thickness of the push plate (4).

9. The pusher furnace for post-processing of metal smelting according to claim 8, characterized in that: The driving source (3) is a servo hydraulic cylinder.

10. The pusher furnace for post-processing of metal smelting according to claim 2, characterized in that: An inclined second diverter plate (15) is provided on one side of the upper end of the inner cavity of the furnace (2) close to the side cavity (10); A first diverter plate (14) corresponding to the upper end of the upper tube (12) is provided inside the side cavity (10), and the first diverter plate (14) is inclined.

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