A heat treatment furnace for stainless steel production

Abstract

The present invention relates to the technical field of stainless steel heat treatment equipment, and discloses a heat treatment furnace for stainless steel production, including a heating furnace body, a take-out device is provided at the front end of the heating furnace body, a slide rail is fixedly installed on the top of the heating furnace body, and a sealing door is slidably connected to the inner wall of the slide rail; the take-out device includes an outer shell, and driving devices are fixedly installed at the four corners of the outer shell, a sliding door assembly is installed in the inner cavity of the outer shell, a connecting bracket is fixedly installed on the outer wall of the outer shell, and a fan bracket is fixedly installed on the outer wall of the connecting bracket. The outer shell is driven to move by four driving devices running simultaneously, and the movement of the outer shell can reel in the steel wire rope to open the sealing door, and the movement of the outer shell can also bring a pallet truck out of the heating furnace body, thereby solving the problem of low processing efficiency and increased use cost caused by the entry and exit of the warehouse door and the pallet truck in the existing heat treatment furnace being controlled by an independent power source.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel heat treatment equipment, in particular to a heat treatment furnace for stainless steel production. Background Art

[0002] Heat treatment furnace refers to an electric furnace or fuel furnace used for heat treatment of furnace charge. Commonly used heat treatment furnaces include box-type resistance furnaces, pit-type resistance furnaces, gas carburizing furnaces and salt bath furnaces. Continuous furnaces are usually used, and workpieces are continuously loaded from the charging door, passed through the furnace, and continuously unloaded from the discharge door. The commonly used method of conveying in the furnace is to place the workpiece on a heat-resistant steel guide rail and transfer it with a step-by-step moving beam or push rod. In recent years, the method of conveying materials with heat-resistant steel conveyor belts has gradually been adopted. In this way, the heat treatment operation is more rationalized, which greatly increases the possibility of automation and unmanned management of the heat treatment process.

[0003] Stainless steel can be improved in strength and hardness after heat treatment. The doors on existing stainless steel heat treatment furnaces need to be opened and closed by separate drive components. The internal pallet truck is also an independent power source to enter and exit the furnace box. The materials on the pallet truck also need to be removed by a forklift for transportation. These operations greatly affect the processing efficiency. Summary of the invention

[0004] The present invention provides a heat treatment furnace for stainless steel production, which solves the problems raised by the above background technology.

[0005] The present invention provides the following technical solution: a heat treatment furnace for stainless steel production, comprising a heating furnace body, a take-out device is provided at the front end of the heating furnace body, a slide rail is fixedly installed on the top of the heating furnace body, and a sealing door is slidably connected to the inner wall of the slide rail;

[0006] The take-out device comprises an outer shell, the four corners of the outer shell are fixedly equipped with a driving device, the inner cavity of the outer shell is equipped with a sliding door assembly, the outer wall of the outer shell is fixedly equipped with a connecting bracket, the outer wall of the connecting bracket is fixedly equipped with a fan bracket, and the inner wall of the fan bracket is fixedly equipped with a plurality of cooling fans;

[0007] The top of the outer shell is rotatably connected with a rotating disk, the top of the rotating disk is fixedly equipped with a bottom suspension arm, the top of the bottom suspension arm is installed with a middle suspension arm, the top of the middle suspension arm is fixedly equipped with a telescopic arm, and the head of the telescopic arm is installed with a hook;

[0008] The inner cavity of the outer shell is provided with a large gear, the outer edge of the large gear is meshed with a small gear, the inner wall of the small gear is fixedly sleeved with a second rotating shaft, both ends of the second rotating shaft are fixedly sleeved with a winch, and the winch is connected to the sealing door through a steel wire rope;

[0009] The outer wall of the outer shell is fixedly equipped with an extended track, the outer wall of the extended track is slidably connected to the fixed track, the top of the fixed track is movably connected to a pallet truck, and the pallet truck and the outer shell are connected through an outer sleeve and an inner sleeve.

[0010] As a preferred technical solution of the present invention, a limiting column is fixedly assembled on one end of the extended track away from the outer shell, a limiting slot is provided on the outer wall of the fixed track, and the limiting column is slidably connected to the limiting slot.

[0011] As a preferred technical solution of the present invention, the outer wall of the inner sleeve is fixedly equipped with two limiting columns, the outer wall of the outer sleeve is provided with two limiting grooves, the two limiting columns are slidably connected to the two limiting grooves, and the outer sleeve is slidably connected to the inner sleeve.

[0012] As a preferred technical solution of the present invention, the outer edge of the large gear is meshed with a fixed rack, and the fixed rack is located at the bottom of the outer shell.

[0013] As a preferred technical solution of the present invention, a right guide double-groove roller is fixedly installed on the bottom of the capstan, a left guide double-groove roller is provided on the left side of the right guide double-groove roller, and a fixed steel groove is fixedly installed on the outer wall of the fixed track, and the right guide double-groove roller and the left guide double-groove roller are both installed in the fixed steel groove.

[0014] As a preferred technical solution of the present invention, a top guide double-groove roller is installed on the top of the slide rail, and the wire rope is rotationally connected to the right guide double-groove roller, the left guide double-groove roller and the top guide double-groove roller.

[0015] As a preferred technical solution of the present invention, there are two steel wire ropes in total, and the two steel wire ropes are respectively located on both sides of the take-out device.

[0016] As a preferred technical solution of the present invention, the inner wall of the large gear is fixedly sleeved with a rotating shaft 1, the outer edge of the rotating shaft 1 is movably sleeved with a mounting bracket 1, and the outer edge of the rotating shaft 2 is movably sleeved with a mounting bracket 2.

[0017] As a preferred technical solution of the present invention, a top limiting strip and a bottom limiting groove are respectively provided at the top and the bottom of the fan bracket, and the fan bracket is slidably connected to the top limiting strip and the bottom limiting groove.

[0018] As a preferred technical solution of the present invention, a plurality of movable rollers are fixedly mounted on the bottom of the fan bracket, and the outer walls of the movable rollers are in contact with the inner walls of the bottom limiting grooves.

[0019] The present invention has the following beneficial effects:

[0020] 1. The heat treatment furnace for stainless steel production drives the outer shell to move by operating four driving devices at the same time. The movement of the outer shell can reel in the steel wire rope to open the sealed door. At the same time, the movement of the outer shell can also bring the pallet truck out of the heating furnace body, thereby solving the problem of low processing efficiency and increased use cost caused by the control of the warehouse door and the entry and exit of the pallet truck in the existing heat treatment furnace by independent power sources.

[0021] 2. The heat treatment furnace for stainless steel production can drive the extended track to slide in the fixed track when the pallet truck is moving. The length of the fixed track can be lengthened when in use, so that the pallet truck can move between the fixed track and the extended track. When not in use, the extended track can be retracted into the fixed track, so that the length of the equipment track can be hidden under the outer shell, thereby solving the problem of existing equipment affecting vehicle traffic due to the long track. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the left three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the bottom three-dimensional structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the movable roller position of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the heating furnace body and the take-out device of the present invention;

[0026] Figure 5 For the present invention Figure 4 A is an enlarged structural diagram;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the take-out device of the present invention;

[0028] Figure 7 This is a schematic diagram of the internal structure of the take-out device of the present invention;

[0029] Figure 8 This is a schematic diagram of the extended track and inner sleeve structure of the present invention.

[0030] In the figure: 1. Heating furnace body; 2. Take-out device; 3. Slide rail; 4. Sealed door;

[0031] 21. Outer shell; 22. Sliding door assembly; 23. Connecting bracket; 24. Fan bracket; 25. Moving roller; 26. Top limit strip; 27. Bottom limit slot; 28. Cooling fan;

[0032] 211, driving device; 212, rotating disk; 213, bottom boom; 214, middle boom; 215, telescopic boom; 216, hook;

[0033] 221. Mounting bracket 1; 222. Rotating shaft 1; 223. Large gear; 224. Small gear; 225. Rotating shaft 2; 226. Mounting bracket 2; 227. Winch; 228. Fixed rack; 229. Extended track; 2210. Limiting column 1; 2211. Fixed track; 2212. Limiting slide 1; 2213. Inner sleeve; 2214. Limiting column 2; 2215. Outer sleeve; 2216. Limiting slide 2; 2217. Pallet truck; 2218. Wire rope; 2219. Right guide double groove roller; 2220. Left guide double groove roller; 2221. Fixed steel trough; 2222. Top guide double groove roller. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 8 A heat treatment furnace for stainless steel production, comprising a heating furnace body 1, a take-out device 2 is provided at the front end of the heating furnace body 1, a slide rail 3 is fixedly mounted on the top of the heating furnace body 1, a sealing door 4 is slidably connected to the inner wall of the slide rail 3, and the sealing door 4 can slide in the slide rail 3, so that the sealing door 4 can open and close the heating furnace body 1, so that stainless steel parts can enter the heating furnace body 1 for heat treatment;

[0036] The take-out device 2 includes an outer shell 21, and the four corners of the outer shell 21 are fixedly equipped with driving devices 211. The four driving devices 211 operate synchronously, so that the four driving devices 211 can drive the outer shell 21 to move. The inner cavity of the outer shell 21 is installed with a sliding door assembly 22. The outer wall of the outer shell 21 is fixedly equipped with a connecting bracket 23, and the outer wall of the connecting bracket 23 is fixedly equipped with a fan bracket 24. The inner wall of the fan bracket 24 is fixedly equipped with a plurality of cooling fans 28. The outer shell 21 can be moved, so that the outer shell 21 can drive the connecting bracket 23, the fan bracket 24 and the cooling fan 28 to move, so that the cooling fan 28 can move.

[0037] The top of the outer shell 21 is rotatably connected with a rotating disk 212, the top of the rotating disk 212 is fixedly equipped with a bottom boom 213, the top of the bottom boom 213 is installed with a middle boom 214, the top of the middle boom 214 is fixedly equipped with a telescopic arm 215, and the head of the telescopic arm 215 is installed with a hook 216. The rotating disk 212 rotates to drive the bottom boom 213, the middle boom 214, the telescopic arm 215 and the hook 216 to rotate, so that the position of the hook 216 can be moved. The operator operates the bottom boom 213, the middle boom 214 and the telescopic arm 215, so that the bottom boom 213, the middle boom 214 and the telescopic arm 215 cooperate and drive the hook 216 to move the stainless steel parts bracket, so that the stainless steel bracket is convenient to be placed on the pallet truck 2217, and is also convenient to be taken off from the pallet truck 2217, thereby improving the working efficiency of loading and unloading;

[0038] The inner cavity of the outer shell 21 is provided with a large gear 223, and the outer edge of the large gear 223 is meshed with a small gear 224, and the inner wall of the small gear 224 is fixedly sleeved with a rotating shaft 225, and both ends of the rotating shaft 225 are fixedly sleeved with a capstan 227. The capstan 227 is connected to the sealing door 4 through a steel wire rope 2218, and the small gear 224 is driven to rotate by the large gear 223, so that the rotation speed of the rotating shaft 225 and the capstan 227 will increase, so that the capstan 227 can reel in the steel wire rope 2218 faster. When reeling, the steel wire rope 2218 pulls the sealing door 4, so that the sealing door 4 can be lifted, and the inside of the heating furnace body 1 can be observed at this time.

[0039] The outer wall of the outer shell 21 is fixedly equipped with an extension track 229, and the outer wall of the extension track 229 is slidably connected to the fixed track 2211, and the top of the fixed track 2211 is movably connected to the pallet truck 2217. The movement of the outer shell 21 can drive the extension track 229 to slide. At this time, the extension track 229 slides in the fixed track 2211, so that the length of the fixed track 2211 can be lengthened, which is convenient for the pallet truck 2217 to walk on the fixed track 2211 and the extension track 229, so that the track will not be too long, and the length of the device is shorter, which can be flexibly installed in different places. The pallet truck 2217 is connected to the outer shell 21 through the outer sleeve 2215 and the inner sleeve 2213. The movement of the outer shell 21 can drive the outer sleeve 2215, the inner sleeve 2213 and the pallet truck 2217 to move, so that the pallet truck 2217 can be removed from the heating furnace body 1.

[0040] In a preferred embodiment, a limiting column 2210 is fixedly assembled on one end of the extended rail 229 away from the outer shell 21, and a limiting groove 2212 is provided on the outer wall of the fixed rail 2211. The limiting column 2210 is slidably connected to the limiting groove 2212. Through the coordinated use of the limiting column 2210 and the limiting groove 2212, the extended rail 229 can move stably in the fixed rail 2211, so that the extended rail 229 fits tightly against the inner wall of the fixed rail 2211, which facilitates the pallet truck 2217 to move smoothly from the fixed rail 2211 to the extended rail 229, thereby improving the stability of the device.

[0041] In a preferred embodiment, the outer wall of the inner sleeve 2213 is fixedly assembled with a limiting column 2214, and the outer wall of the outer sleeve 2215 is provided with a limiting groove 2216. The limiting column 2214 is slidably connected to the limiting groove 2216, and the outer sleeve 2215 is slidably connected to the inner sleeve 2213. By utilizing the setting of the limiting column 2214 and the limiting groove 2216, the limiting column 2214 slides in the limiting groove 2216, and the pallet truck 2217 does not move at this time. When the limiting column 2214 cannot slide in the limiting groove 2216, the inner sleeve 2213 drives the outer sleeve 2215 and the pallet truck 2217 to move. At this time, the sealing door 4 is in a fully open state. By utilizing the stroke between the outer sleeve 2215 and the inner sleeve 2213, the outer shell 21 has enough moving time to open the sealing door 4, thereby improving the rationality of the device.

[0042] In a preferred embodiment, the outer edge of the large gear 223 is meshed with a fixed rack 228, and the fixed rack 228 is located at the bottom of the outer shell 21. By using the setting of the fixed rack 228, when the outer shell 21 is moving, the outer shell 21 will drive the large gear 223 to rotate clockwise, and the clockwise rotation of the large gear 223 drives the small gear 224 to rotate counterclockwise, so that the capstan 227 can be rotated.

[0043] In a preferred embodiment, the bottom of the capstan 227 is fixedly equipped with a right guide double-groove roller 2219, and the left guide double-groove roller 2220 is provided on the left side of the right guide double-groove roller 2219. The outer wall of the fixed rail 2211 is fixedly equipped with a fixed steel groove 2221. The right guide double-groove roller 2219 and the left guide double-groove roller 2220 are both installed in the fixed steel groove 2221. The left guide double-groove roller 2220 and the right guide double-groove roller 2219 make the wire rope 2218 and the fixed rail 2211 in a parallel state, so that the stainless steel bracket will not be blocked when moving.

[0044] In a preferred embodiment, a top guide double-groove roller 2222 is installed on the top of the slide rail 3, and the wire rope 2218 is rotatably connected with the right guide double-groove roller 2219, the left guide double-groove roller 2220 and the top guide double-groove roller 2222. Through the setting of the top guide double-groove roller 2222, the top guide double-groove roller 2222 limits the wire rope 2218, so that the head of the wire rope 2218 is in a vertical state with the sealing door 4, so that the sealing door 4 can be better pulled up, and the right guide double-groove roller 2219, the left guide double-groove roller 2220 and the top guide double-groove roller 2222 can protect the wire rope 2218, so that the service life of the wire rope 2218 is longer.

[0045] In a preferred embodiment, two steel wire ropes 2218 are provided, and the two steel wire ropes 2218 are respectively located on both sides of the carrying device 2. Since the right guide double-groove roller 2219, the left guide double-groove roller 2220 and the top guide double-groove roller 2222 all have two grooves, one side of the equipment has two steel wire ropes 2218, so that the device has four steel wire ropes 2218 to pull the sealing door 4, thereby improving the stability of the sealing door 4.

[0046] In a preferred embodiment, the inner wall of the large gear 223 is fixedly sleeved with a rotating shaft 222, the outer edge of the rotating shaft 222 is movably sleeved with a mounting bracket 221, and the outer edge of the rotating shaft 225 is movably sleeved with a mounting bracket 226. The mounting bracket 221 limits the rotating shaft 222, so that the rotating shaft 222 and the large gear 223 rotate at a specified position, and the mounting bracket 226 also limits the rotating shaft 225 and the small gear 224, so that the small gear 224 is fully meshed with the large gear 223.

[0047] In a preferred embodiment, the top and bottom of the fan bracket 24 are respectively provided with a top limiting bar 26 and a bottom limiting groove 27, and the fan bracket 24 is slidably connected to the top limiting bar 26 and the bottom limiting groove 27. The top limiting bar 26 and the bottom limiting groove 27 can limit the fan bracket 24, and the fan bracket 24 can only slide in the top limiting bar 26 and the bottom limiting groove 27.

[0048] In a preferred embodiment, a plurality of movable rollers 25 are fixedly mounted on the bottom of the fan bracket 24, and the outer wall of the movable roller 25 contacts the inner wall of the bottom limiting groove 27. The movable rollers 25 support the fan bracket 24, so that the fan bracket 24 moves more smoothly, and the resistance of the fan bracket 24 is reduced when it moves, so that the outer shell 21 will not bear a large load when it moves.

[0049] Working principle: when in use, the outer shell 21 is driven to move by the simultaneous operation of the four driving devices 211. At this time, the outer shell 21 drives the extended track 229 to slide in the fixed track 2211, and the inner sleeve 2213 slides in the outer sleeve 2215. When the inner sleeve 2213 cannot move, the outer sleeve 2215 drives the pallet truck 2217 to move on the fixed track 2211 and the extended track 229. At the same time, the large gear 223 rolls clockwise on the fixed rack 228, and the clockwise rolling of the large gear 223 drives the small gear 224 to rotate counterclockwise. The rotation of the small gear 224 drives the rotating shaft 225 and the winch 227 to rotate. The winch 227 rotates to reel in the wire rope 2218. At this time, the wire rope 2218 The sealing door 4 is driven to slide in the slide rail 3, and the sealing door 4 slides to the top of the slide rail 3. At this time, the interior of the heating furnace body 1 can be observed. While the outer shell 21 moves, the fan bracket 24 is also driven to move through the connecting bracket 23. Then the fan bracket 24 corresponds to the pallet truck 2217, and the heat dissipation fan 28 on the fan bracket 24 is used to cool the heated stainless steel parts, so that the stainless steel parts can be cooled faster. Then the operator controls the bottom boom 213, the middle boom 214 and the telescopic arm 215, and unloads the stainless steel bracket from the pallet truck 2217 through the bottom boom 213, the middle boom 214 and the telescopic arm 215, and then hangs the stainless steel bracket that needs heat treatment on the pallet truck 2217 again.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat treatment furnace for stainless steel production, comprising a heating furnace body (1), characterized in that: The front end of the heating furnace body (1) is provided with a take-out device (2), the top of the heating furnace body (1) is fixedly equipped with a slide rail (3), and the inner wall of the slide rail (3) is slidably connected with a sealing door (4); The take-out device (2) comprises an outer shell (21), the four corners of the outer shell (21) are fixedly equipped with a driving device (211), the inner cavity of the outer shell (21) is installed with a sliding door assembly (22), the outer wall of the outer shell (21) is fixedly equipped with a connecting bracket (23), the outer wall of the connecting bracket (23) is fixedly equipped with a fan bracket (24), and the inner wall of the fan bracket (24) is fixedly equipped with a plurality of cooling fans (28); The top of the outer shell (21) is rotatably connected to a rotating disk (212); the top of the rotating disk (212) is fixedly equipped with a bottom suspension arm (213); the top of the bottom suspension arm (213) is equipped with a middle suspension arm (214); the top of the middle suspension arm (214) is fixedly equipped with a telescopic arm (215); and the head of the telescopic arm (215) is equipped with a hook (216); The inner cavity of the outer shell (21) is provided with a large gear (223), the outer edge of the large gear (223) is meshed with a small gear (224), the inner wall of the small gear (224) is fixedly sleeved with a second rotating shaft (225), both ends of the second rotating shaft (225) are fixedly sleeved with a winch (227), and the winch (227) is connected to the sealing door (4) via a steel wire rope (2218); The outer wall of the outer shell (21) is fixedly equipped with an extension track (229), the outer wall of the extension track (229) is slidably connected to a fixed track (2211), the top of the fixed track (2211) is movably connected to a pallet truck (2217), and the pallet truck (2217) and the outer shell (21) are connected via an outer sleeve (2215) and an inner sleeve (2213); The outer edge of the large gear (223) is meshed with a fixed rack (228), and the fixed rack (228) is located at the bottom of the outer shell (21).

2. A heat treatment furnace for stainless steel production according to claim 1, characterized in that: A limiting column 1 (2210) is fixedly assembled at one end of the extended track (229) away from the outer shell (21); a limiting slide groove 1 (2212) is provided on the outer wall of the fixed track (2211); and the limiting column 1 (2210) is slidably connected to the limiting slide groove 1 (2212).

3. A heat treatment furnace for stainless steel production according to claim 1, characterized in that: The outer wall of the inner sleeve (2213) is fixedly equipped with a second limiting column (2214), the outer wall of the outer sleeve (2215) is provided with a second limiting groove (2216), the second limiting column (2214) is slidably connected to the second limiting groove (2216), and the outer sleeve (2215) is slidably connected to the inner sleeve (2213).

4. A heat treatment furnace for stainless steel production according to claim 1, characterized in that: A right guide double-groove roller (2219) is fixedly mounted on the bottom of the capstan (227), a left guide double-groove roller (2220) is disposed on the left side of the right guide double-groove roller (2219), a fixed steel groove (2221) is fixedly mounted on the outer wall of the fixed track (2211), and both the right guide double-groove roller (2219) and the left guide double-groove roller (2220) are installed in the fixed steel groove (2221).

5. A heat treatment furnace for stainless steel production according to claim 4, characterized in that: A top guide double-groove roller (2222) is installed on the top of the slide rail (3), and the steel wire rope (2218) is rotatably connected to the right guide double-groove roller (2219), the left guide double-groove roller (2220) and the top guide double-groove roller (2222).

6. A heat treatment furnace for stainless steel production according to claim 5, characterized in that: There are two steel wire ropes (2218) in total, and the two steel wire ropes (2218) are respectively located on two sides of the carrying device (2).

7. A heat treatment furnace for stainless steel production according to claim 1, characterized in that: The inner wall of the large gear (223) is fixedly sleeved with a rotating shaft 1 (222), the outer edge of the rotating shaft 1 (222) is movably sleeved with a mounting bracket 1 (221), and the outer edge of the rotating shaft 2 (225) is movably sleeved with a mounting bracket 2 (226).

8. The heat treatment furnace for stainless steel production according to claim 1, characterized in that: A top limiting strip (26) and a bottom limiting groove (27) are respectively provided at the top and the bottom of the fan bracket (24); the fan bracket (24) is slidably connected to the top limiting strip (26) and the bottom limiting groove (27).

9. A heat treatment furnace for stainless steel production according to claim 8, characterized in that: A plurality of movable rollers (25) are fixedly mounted on the bottom of the fan bracket (24), and the outer walls of the movable rollers (25) are in contact with the inner walls of the bottom limiting grooves (27).

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