A steel heat treatment device

Abstract

The application discloses a steel heat treatment device, which comprises a heating box and a refrigeration box, the heating box is connected with the refrigeration box through a connecting channel, the heating box and the refrigeration box are both provided with through holes at both ends of the corresponding side edges, a pushing device is arranged between the heating box, the connecting channel and the refrigeration box, a feeding channel is arranged on one side of the heating box close to one end of the connecting channel, a discharging channel is arranged on one side of the refrigeration box away from one end of the connecting channel, a heating partition is arranged in the heating box away from one end of the connecting channel, a heater is arranged in the heating partition, a refrigeration partition is arranged in the refrigeration box away from one end of the connecting channel, a refrigerator is arranged in the refrigeration partition, and a grating net is arranged in the middle of one side of the refrigeration partition corresponding to the connecting channel and one side of the heating partition corresponding to the connecting channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel processing equipment, in particular to a steel heat treatment device. BACKGROUND

[0002] Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing technologies, heat treatment generally does not change the shape and overall chemical composition of the workpiece, but changes the microstructure inside the workpiece or the chemical composition of the workpiece surface to give or improve the use performance of the workpiece. Its characteristic is to improve the internal quality of the workpiece, which is generally not visible to the naked eye. In order to make the metal workpiece have the required mechanical properties, physical properties and chemical properties, in addition to reasonable selection of materials and various forming processes, heat treatment process is often essential. Steel is the most widely used material in the mechanical industry, and the microstructure of steel is complex and can be controlled by heat treatment, so the heat treatment of steel is the main content of metal heat treatment.

[0003] The existing heat treatment mostly has only two processes of heating and cooling. When the steel material needs to be cooled after heat treatment and heat preservation, the steel material needs to be transferred first and then cooled. In the process of transferring, the just heat-treated steel material is moved out suddenly and contacts the external air, which is affected by the external temperature, thereby affecting the treatment effect of the steel material. At the same time, when the just heat-treated steel material is transferred, the temperature cannot be immediately reduced, and there is no temperature buffering, thereby increasing the risk performance. SUMMARY

[0004] The technical task of the present application is to solve the above problems by providing a steel heat treatment device.

[0005] The technical scheme of the present application is as follows:

[0006] A steel heat treatment device, comprising a heating box and a refrigeration box, the heating box is connected with the refrigeration box through a connecting channel, the corresponding side edges of the heating box and the refrigeration box are provided with through holes at both ends, the through holes connect the connecting channel with the heating box and the refrigeration box, a pushing device is arranged between the heating box, the connecting channel and the refrigeration box, a feeding channel is arranged on one side of the heating box close to one end of the connecting channel, an outlet channel is arranged on one side of the refrigeration box away from one end of the connecting channel, a heating compartment is arranged in the heating box away from one end of the connecting channel, a heater is arranged in the heating compartment, a refrigeration compartment is arranged in the refrigeration box away from one end of the connecting channel, a refrigerator is arranged in the refrigeration compartment, and a grid net is arranged in the middle of the side of the refrigeration compartment corresponding to the connecting channel and the side of the heating compartment corresponding to the connecting channel.

[0007] As preferred, the heating compartment is provided with a passageway in the middle of each end, and a blast push rod is inserted into the passageway, one end of the blast push rod extends into the heating box and is provided with a thin plate at the end, and the end of the blast push rod away from the thin plate extends into the heating box and is provided with a push plate between the ends, and the push plate is provided with a heat insulation plate corresponding to one side of the heating box.

[0008] As preferred, the push device comprises two U-shaped supports, which are respectively located in the heating box and the refrigeration box, and L-shaped branch pipes one and two are provided in the U-shaped groove of the U-shaped support at both ends, and an inner annular track is provided between the outer ends of the L-shaped branch pipes one and two, and the inner annular track penetrates the heating box, the connecting channel and the refrigeration box.

[0009] As preferred, the L-shaped branch pipe two is provided with a vertical plate corresponding to one side of the L-shaped branch pipe one, the vertical plate is provided with an L-shaped support corresponding to one side of the L-shaped branch pipe two, the top of the L-shaped support is provided with a T-shaped seat, a threaded conveying rod is transversely provided between the T-shaped seats, the threaded conveying rod transversely penetrates the heating box, the connecting channel and the refrigeration box and is connected with a driver at one end, the bottom of the driver is provided with a support column, and the bottom of the support column is fixed at one end in the refrigeration box.

[0010] As preferred, an outer annular track is provided between the inner sides and the top of the U-shaped support, the outer annular track is located above the outer side of the inner annular track, a plurality of limiting wheels one are provided inside the outer annular track, a fixed plate one is provided at the top of the limiting wheel one, a tray is provided at the top of the fixed plate one, an outer connecting cylinder is provided at the bottom center of the tray, the outer connecting cylinder penetrates the middle of the fixed plate one and extends below the fixed plate one and is provided with a fixed plate two at the bottom, limiting wheels two are provided at both ends of the bottom of the fixed plate two, and the limiting wheels two are located outside the inner annular track.

[0011] As preferred, an extension plate is provided at the inner middle part of the fixed plate one, a threaded groove limiting block matched with the threaded conveying rod is provided at one end of the extension plate away from the fixed plate one, a clamping block one and a clamping block two are respectively provided at the middle of both ends of the tray, and a connecting rod is provided between the clamping block one and the clamping block two.

[0012] As preferred, the top of the tray is provided with a slide plate at both ends, the slide plate is provided with a strip-shaped groove at both sides, the strip-shaped groove is provided with a convex strip matched with the strip-shaped groove, the top of the convex strip is provided with a sliding block, the top of the sliding block is provided with a placing disc, the bottom center of the placing disc is provided with a frame, the middle of the frame is provided with a placing disc connecting column at both sides, the bottom of the placing disc connecting column extends to the top of the tray, the top of the tray is provided with a groove at both ends of the placing disc connecting column, and the bottom of the placing disc connecting column is located in the groove.

[0013] As preferred, the frame is provided with a gear at one side, the middle of the frame is provided with a gear matched with the gear at the center of the top of the tray, the bottom center of the gear is provided with a rotating shaft, the rotating shaft extends through the tray, the outer connecting cylinder and the fixing plate II to the bottom between the two limiting wheels and is provided with a motor at the bottom, and the motor is fixed at the bottom center of the fixing plate II.

[0014] Compared with the prior art, the application has the advantages and positive effects that:

[0015] 1. The steel heat treatment is provided with a corrugated folding type connecting channel between the heating box and the refrigeration box, which plays a buffering role in the pushing process, so that the steel can enter the refrigeration box from the connecting channel after being heat treated in the heating box, and the temperature of the steel after heat treatment can be effectively relieved through the sealed connecting channel, so as to avoid the influence of the steel heat treatment effect caused by the sudden contact of the steel with the low temperature outside after heat treatment, so that the steel has a buffering interval after heat treatment, and then enters the refrigeration box for refrigeration, so as to effectively maintain the effect of the steel after treatment.

[0016] 2. A blast pushing device is arranged in the heating compartment, which can increase the heat in the heating box under the driving of the wind speed, so that every corner in the heating box can receive the heat delivery, and the connecting channel is arranged in a corrugated folding type structure, so that the heat transmission path will be increased when the heat entering the connecting channel impacts on the corrugated folding structure formed on the inner wall of the connecting channel, and the entering heat will be gradually weakened, which can also achieve a constant temperature effect.

[0017] 3. A sliding mechanism is arranged on the top of the tray, and the placing tray is moved by the sliding mechanism. When one placing tray is driven by the pushing device and is located at the end of the feeding channel, the placing tray is pushed out by the sliding mechanism, and the steel material is placed in the placing tray. An inductor is arranged at the inner end of the feeding channel and the discharging channel, and a signal contactor is arranged at the outer end of each placing tray. When the inductor senses that one placing tray is located at the end of the feeding channel or the discharging channel, the work of the threaded conveying rod is stopped, so that the steel material is pushed to the placing tray or the steel material is pushed to be processed. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure according to the embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of the connection end structure of the heating tank and the refrigeration tank according to the embodiment of the present application.

[0021] Figure 3 It is a sectional view of the heating compartment according to the embodiment of the present application.

[0022] Figure 4 It is a schematic diagram of the pushing device structure according to the embodiment of the present application.

[0023] Figure 5 It is a schematic diagram of the end structure of the ring track according to the embodiment of the present application.

[0024] Figure 6 It is a schematic diagram of the connection end structure of the placing tray according to the embodiment of the present application.

[0025] Figure 7 It is a schematic diagram of the end structure of the placing tray according to the embodiment of the present application.

[0026] Figure 8 It is a schematic diagram of the connection end structure between the placing tray and the tray according to the embodiment of the present application.

[0027] Figure 9 It is a bottom view of the placing tray according to the embodiment of the present application.

[0028] Figure 10 It is a top view of the tray according to the embodiment of the present application.

[0029] In the drawings:

[0030] 1, heating box; 2, refrigeration box; 3, connecting channel; 4, through hole; 5, pushing device; 6, feeding channel; 7, discharging channel; 8, heating compartment; 9, heater; 10, refrigeration compartment; 11, refrigerator; 12, grid; 13, channel; 14, air blowing push rod; 15, sheet; 16, push plate; 17, heat insulation plate; 18, U-shaped support; 19, L-shaped branch pipe one; 20, L-shaped branch pipe two; 21, inner annular track; 22, vertical plate; 23, L-shaped support; 24, T-shaped seat; 25, threaded conveying rod; 26, driver; 27, support column; 28, outer annular track; 29, limiting wheel one; 30, fixed plate one; 31, tray; 32, outer connecting cylinder; 33, fixed plate two; 34, limiting wheel two; 35, extension plate; 36, threaded groove limiting block; 37, clamping block one; 38, clamping block two; 39, connecting rod; 40, sliding plate; 41, strip-shaped groove; 42, convex strip; 43, sliding block; 44, placing disc; 45, frame; 46, placing disc connecting column; 47, groove; 48, gear tooth; 49, gear; 50, rotating shaft; 51, motor. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above objectives, features and advantages of the present application, the following further describes the present application with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] The present application is further described below with reference to the accompanying drawings and specific embodiments.

[0033] According to the embodiments of the present application, as shown in Figures 1-10

[0034] The present application provides a steel heat treatment device, comprising a heating box 1 and a refrigeration box 2, the heating box 1 is connected with the refrigeration box 2 through a connecting channel 3, the heating box 1 and the refrigeration box 2 are both provided with a through hole 4 at both ends of the corresponding side, the through hole 4 connects the connecting channel 3 with the heating box 1 and the refrigeration box 2, a pushing device 5 is arranged between the heating box 1, the connecting channel 3 and the refrigeration box 2, a feeding channel 6 is arranged on one side of the heating box 1 close to one end of the connecting channel 3, a discharging channel 7 is arranged on one side of the refrigeration box 2 away from one end of the connecting channel 3, a heating compartment 8 is arranged in the heating box 1 away from one side of the connecting channel 3, a heater 9 is arranged in the heating compartment 8, a refrigeration compartment 10 is arranged in the refrigeration box 2 away from one side of the connecting channel 3, a refrigerator 11 is arranged in the refrigeration compartment 10, and a grid 12 is arranged on the middle part of one side of the refrigeration compartment 10 corresponding to the connecting channel 3 and one side of the heating compartment 8 corresponding to the connecting channel 3. ​

[0035] According to the above, the heating compartment 8 is provided with a passageway 13 at the middle of both ends, and a blast push rod 14 is arranged in the passageway 13. Figures 1-3 The passageway 13 is provided with a thin plate 15 at one end of the blast push rod 14, and the other end of the blast push rod 14 extends to the outside of the heating box 1 and is provided with a push plate 16 between the ends.

[0036] In addition, according to the above, the push device 5 comprises two U-shaped supports 18 arranged in the heating box 1 and the refrigeration box 2 respectively. Figures 4-5 The U-shaped groove of the U-shaped support 18 is provided with an L-shaped branch pipe one 19 and an L-shaped branch pipe two 20 at both ends, and an inner annular track 21 is arranged between the outer ends of the L-shaped branch pipe one 19 and the L-shaped branch pipe two 20. The L-shaped branch pipe two 20 is provided with a vertical plate 22 on one side of the L-shaped branch pipe one 19, and the vertical plate 22 is provided with an L-shaped support 23 on one side of the L-shaped branch pipe two 20. The top of the L-shaped support 23 is provided with a T-shaped seat 24, and a threaded conveying rod 25 is arranged between the T-shaped seats 24. The threaded conveying rod 25 extends through the heating box 1, the connecting passageway 3 and the refrigeration box 2, and one end of the threaded conveying rod 25 is connected with a driver 26. The bottom of the driver 26 is provided with a support column 27, and one end of the support column 27 is fixed in the refrigeration box 2. The inner side of the U-shaped support 18 is provided with an outer annular track 28 above the outer side of the inner annular track 21. The inner side of the outer annular track 28 is provided with a plurality of limiting wheels one 29, and the top of the limiting wheels one 29 is provided with a fixed plate one 30. The top of the fixed plate one 30 is provided with a tray 31, and the bottom center of the tray 31 is provided with an outer connecting cylinder 32. The outer connecting cylinder 32 extends through the middle of the fixed plate one 30 to the lower side of the fixed plate one 30, and the bottom of the outer connecting cylinder 32 is provided with a fixed plate two 33. The bottom of the fixed plate two 33 is provided with limiting wheels two 34, and the limiting wheels two 34 are located on the outer side of the inner annular track 21. The inner side of the fixed plate one 30 is provided with an extension plate 35 at the middle. The other end of the extension plate 35 away from the fixed plate one 30 is provided with a threaded groove limiting block 36 matched with the threaded conveying rod 25. The middle of both ends of the tray 31 is respectively provided with a clamping block one 37 and a clamping block two 38, and the clamping block one 37 and the clamping block two 38 are respectively provided with a connecting rod 39.

[0037] In addition, according to the above, the push device 5 comprises two U-shaped supports 18 arranged in the heating box 1 and the refrigeration box 2 respectively. Figures 6-10As shown in the middle, the tray 31 top both ends are provided with slide plate 40, the slide plate 40 both sides are provided with strip slot 41, the strip slot 41 are provided with convex strip 42 matched with the strip slot 41, the top of the convex strip 42 are provided with slide block 43, the top of the slide block 43 are provided with placement tray 44, the bottom center of the placement tray 44 are provided with frame 45, the middle of the frame 45 both sides are provided with placement tray connecting column 46, the bottom of the placement tray connecting column 46 extend to the top of the tray 31, the top of the tray 31 both ends are provided with recess 47, the bottom of the placement tray connecting column 46 are located in the recess 47 respectively, one side of the frame 45 are provided with gear tooth 48, the middle of the frame 45 are provided with gear wheel 49 meshed with the gear tooth 48, the bottom center of the gear wheel 49 are provided with rotating shaft 50, the rotating shaft 50 extend through the tray 31 and the outer connecting cylinder 32 and the fixed plate two 33 to the bottom of the limiting wheel two 34 and are provided with motor 51, the motor 51 are fixed at the bottom center of the fixed plate two 33.

[0038] The detailed use method and effect of the embodiment:

[0039] When one of the placement disc 44 is just located at the inlet channel 6, the driving motor 51 drives the motor 51 to rotate the rotating shaft 50, which drives the gear 49 to rotate, and the gear 49 drives the gear teeth 48 inside the frame 45 to move, and the frame 45 moves, and the placement disc connecting column 46 on both sides of the frame 45 is fixed on the bottom of the placement disc 44, so when the frame 45 moves, the whole placement disc 44 will move to one side, and the slider 43 at both ends of the placement disc 44 moves in the sliding plate 40, and the placement disc 44 moves to one side into the inlet channel 6, and then the steel material is placed on the placement disc 44, and then the above-mentioned principle is used to slide the placement disc 44 back to the tray 31, and then the driving driver 26 drives the threaded conveying rod 25 to rotate, and the threaded groove on the surface of the threaded conveying rod 25 drives the threaded groove limiting block 36 above to move forward, and when the first threaded groove limiting block 36 moves forward to the rear end of the threaded conveying rod 25, the threaded groove limiting block 36 behind moves to the upper end of the threaded conveying rod 25, and the other threaded groove limiting blocks 36 move continuously, and the threaded groove limiting block 36 moves forward, and the limiting wheel one 29 below the tray 31 moves along the inside of the outer ring track 28, and the limiting wheel two 34 moves along the outside of the inner ring track 21, and then the tray 31 enters the connecting channel 3 from the heating box 1, and then enters the refrigeration box 2 from the connecting channel 3, and finally stops at the outlet channel 7, and then the driving motor 51 drives the placement disc 44 to move outward to take out the steel material on the placement disc 44.

[0040] When the tray 31 moves in the heating box 1, the heater 9 inside the heating box 1 heats it, and the push plate 16 is pushed by the external force to push the air blowing push rod 14 at both ends to pull, so that the thin plate 15 inside is continuously pulled in the heating box 1, and the blowing force of the air inside is increased, and the heat source is dispersed, so that the heat in the heating box 1 can fully contact every corner, and the steel material can be more fully heat treated in the walking and rotating process, and the heat brought in through the connecting channel 3 is slowly weakened by the structure of the corrugated folded surface of the connecting channel 3, and a buffering and constant temperature effect is provided for the steel material.

[0041] Through the above specific embodiments, the skilled in the art can easily realize the present application. However, it should be understood that the present application is not limited to the above specific embodiments. On the basis of the disclosed embodiments, the skilled in the art can arbitrarily combine different technical features to realize different technical solutions.

Claims

1. A steel material heat treatment apparatus characterized by comprising: The utility model provides heating tank (1) and refrigeration tank (2) including, heating tank (1) is connected with refrigeration tank (2) through connecting channel (3), both ends of the corresponding side of heating tank (1) and refrigeration tank (2) are equipped with through -hole (4), through -hole (4) is connected through with connecting channel (3) and heating tank (1) and refrigeration tank (2), be equipped with pusher (5) between heating tank (1), connecting channel (3) and refrigeration tank (2), one side of heating tank (1) is equipped with feed channel (6) near one end of connecting channel (3), refrigeration tank (2) is equipped with discharge channel (7) with feed channel (6) one side and away from one end of connecting channel (3), the one side away from connecting channel (3) in heating tank (1) is equipped with heating compartment (8), heating compartment (8) is equipped with heater (9) in, the one side away from connecting channel (3) in refrigeration tank (2) is equipped with refrigeration compartment (10), refrigeration compartment (10) is equipped with refrigerator (11) in, the middle part of the one side of refrigeration compartment (10) corresponding connecting channel (3) and the middle part of the one side of heating compartment (8) corresponding connecting channel (3) are equipped with grating (12); The utility model provides heating tank (1) and refrigeration tank (2) including, heating tank (1) is connected with refrigeration tank (2) through connecting channel (3), both ends of the corresponding side of heating tank (1) and refrigeration tank (2) are equipped with through -hole (4), through -hole (4) is connected through with connecting channel (3) and heating tank (1) and refrigeration tank (2), be equipped with pusher (5) between heating tank (1), connecting channel (3) and refrigeration tank (2), one side of heating tank (1) is equipped with feed channel (6) near one end of connecting channel (3), refrigeration tank (2) is equipped with discharge channel (7) with feed channel (6) one side and away from one end of connecting channel (3), the one side away from connecting channel (3) in heating tank (1) is equipped with heating compartment (8), heating compartment (8) is equipped with heater (9) in, the one side away from connecting channel (3) in refrigeration tank (2) is equipped with refrigeration compartment (10), refrigeration compartment (10) is equipped with refrigerator (11) in, the middle part of the one side of refrigeration compartment (10) corresponding connecting channel (3) and the middle part of the one side of heating compartment (8) corresponding connecting channel (3) are equipped with grating (12); The utility model provides heating tank (1) and refrigeration tank (2) including, heating tank (1) is connected with refrigeration tank (2) through connecting channel (3), both ends of the corresponding side of heating tank (1) and refrigeration tank (2) are equipped with through -hole (4), through -hole (4) is connected through with connecting channel (3) and heating tank (1) and refrigeration tank (2), be equipped with pusher (5) between heating tank (1), connecting channel (3) and refrigeration tank (2), one side of heating tank (1) is equipped with feed channel (6) near one end of connecting channel (3), refrigeration tank (2) is equipped with discharge channel (7) with feed channel (6) one side and away from one end of connecting channel (3), the one side away from connecting channel (3) in heating tank (1) is equipped with heating compartment (8), heating compartment (8) is equipped with heater (9) in, the one side away from connecting channel (3) in refrigeration tank (2) is equipped with refrigeration compartment (10), refrigeration compartment (10) is equipped with refrigerator (11) in, the middle part of the one side of refrigeration compartment (10) corresponding connecting channel (3) and the middle part of the one side of heating compartment (8) corresponding connecting channel (3) are equipped with grating (12); 2. The steel heat treatment apparatus according to claim 1, wherein The utility model provides heating tank (1) and refrigeration tank (2) including, heating tank (1) is connected with refrigeration tank (2) through connecting channel (3), both ends of the corresponding side of heating tank (1) and refrigeration tank (2) are equipped with through -hole (4), through -hole (4) is connected through with connecting channel (3) and heating tank (1) and refrigeration tank (2), be equipped with pusher (5) between heating tank (1), connecting channel (3) and refrigeration tank (2), one side of heating tank (1) is equipped with feed channel (6) near one end of connecting channel (3), refrigeration tank (2) is equipped with discharge channel (7) with feed channel (6) one side and away from one end of connecting channel (3), the one side away from connecting channel (3) in heating tank (1) is equipped with heating compartment (8), heating compartment (8) is equipped with heater (9) in, the one side away from connecting channel (3) in refrigeration tank (2) is equipped with refrigeration compartment (10), refrigeration compartment (10) is equipped with refrigerator (11) in, the middle part of the one side of refrigeration compartment (10) corresponding connecting channel (3) and the middle part of the one side of heating compartment (8) corresponding connecting channel (3) are equipped with grating (12); The utility model provides heating tank (1) and refrigeration tank (2) including, heating tank (1) is connected with refrigeration tank (2) through connecting channel (3), both ends of the corresponding side of heating tank (1) and refrigeration tank (2) are equipped with through -hole (4), through -hole (4) is connected through with connecting channel (3) and heating tank (1) and refrigeration tank (2), be equipped with pusher (5) between heating tank (1), connecting channel (3) and refrigeration tank (2), one side of heating tank (1) is equipped with feed channel (6) near one end of connecting channel (3), refrigeration tank (2) is equipped with discharge channel (7) with feed channel (6) one side and away from one end of connecting channel (3), the one side away from connecting channel (3) in heating tank (1) is equipped with heating compartment (8), heating compartment (8) is equipped with heater (9) in, the one side away from connecting channel (3) in refrigeration tank (2) is equipped with refrigeration compartment (10), refrigeration compartment (10) is equipped with refrigerator (11) in, the middle part of the one side of refrigeration compartment (10) corresponding connecting channel (3) and the middle part of the one side of heating compartment (8) corresponding connecting channel (3) are equipped with grating (12); The utility model provides heating tank (1) and refrigeration tank (2) including, heating tank (1) is connected with refrigeration tank (2) through connecting channel (3), both ends of the corresponding side of heating tank (1) and refrigeration tank (2) are equipped with through -hole (4), through -hole (4) is connected through with connecting channel (3) and heating tank (1) and refrigeration tank (2), be equipped with pusher (5) between heating tank (1), connecting channel (3) and refrigeration tank (2), one side of heating tank (1) is equipped with feed channel (6) near one end of connecting channel (3), refrigeration tank (2) is equipped with discharge channel (7) with feed channel (6) one side and away from one end of connecting channel (3), the one side away from connecting channel (3) in heating tank (1) is equipped with heating compartment (8), heating compartment (8) is equipped with heater (9) in, the one side away from connecting channel (3) in refrigeration tank (2) is equipped with refrigeration compartment (10), refrigeration compartment (10) is equipped with refrigerator (11) in, the middle part of the one side of refrigeration compartment (10) corresponding connecting channel (3) and the middle part of the one side of heating compartment (8) corresponding connecting channel (3) are equipped with grating (12) 3. The steel heat treatment apparatus according to claim 2, wherein The inner side of the fixed plate one (30) is provided with an extension plate (35) in the middle, one end of the extension plate (35) away from the fixed plate one (30) is provided with a threaded groove limiting block (36) matched with the threaded conveying rod (25), the middle of both ends of the tray (31) is provided with a clamping block one (37) and a clamping block two (38), respectively, the clamping block one (37) and the clamping block two (38) are provided with a connecting rod (39).

4. The steel heat treatment apparatus according to claim 3, wherein The top of both ends of the tray (31) is provided with a sliding plate (40), both sides of the sliding plate (40) are provided with a strip-shaped groove (41), the strip-shaped groove (41) is provided with a convex strip (42) matched with the strip-shaped groove (41), the top of the convex strip (42) is provided with a sliding block (43), the top of the sliding block (43) is provided with a placing disc (44), the bottom center of the placing disc (44) is provided with a frame (45), both sides of the frame (45) are provided with a placing disc connecting column (46), the bottom of the placing disc connecting column (46) extends to the top of the tray (31), the top of the tray (31) is provided with a recess (47) at both ends of the placing disc connecting column (46), the bottom of the placing disc connecting column (46) is located in the recess (47) respectively.

5. The steel heat treatment apparatus according to claim 3, wherein The inner side of the frame (45) is provided with a gear tooth (48), the middle of the inner side of the frame (45) is provided with a gear wheel (49) engaged with the gear tooth (48) at the top center of the tray (31), the bottom center of the gear wheel (49) is provided with a rotating shaft (50), the rotating shaft (50) penetrates the tray (31), the outer connecting cylinder (32) and the fixed plate two (33) and extends to between the limiting wheel two (34) and is provided with a motor (51) at the bottom, the motor (51) is fixed at the bottom center of the fixed plate two (33).

6. The steel heat treatment apparatus according to claim 5, wherein ​

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