A multi-element co-infiltration reaction furnace for processing workpieces

Abstract

The present invention provides a multi-element co-infiltration reactor for processing workpieces, which relates to the field of heat treatment technology. The multi-element co-infiltration reactor for processing workpieces includes a base, a co-infiltration gas supply device and a sealing device. The present invention uses two sets of left and right opposing top cone heads to respectively support the two end portions of a long rod-type workpiece, thereby clamping the long rod-type workpiece, making loading and unloading very convenient. During the reaction, the turntable is driven to rotate by a driving motor, thereby driving the long rod-type workpiece clamped between the two sets of turntables to rotate, so that the co-infiltration gas and powder can fully contact the surface of the long rod-type workpiece, fully ensuring the co-infiltration effect. A first heat insulation disk and a second heat insulation disk are arranged between the second rotating rod and the drive shaft. The heat in the co-infiltration barrel is prevented from being transferred outward through the second rotating rod through the heat insulation lever and the lever groove. The working environment comfort is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat treatment, in particular to a multi-element co-penetration reaction furnace for processing workpieces. Background Art

[0002] The multi-component co-infiltration reactor is a commonly used equipment in the heat treatment process. It mainly infiltrates the multi-component alloy powder and co-infiltration gas into the inner layer of the metal surface through heating, thereby forming a heat treatment protective layer on the metal surface of the workpiece to improve the corrosion resistance of the metal surface of the workpiece.

[0003] In the prior art, a "multi-element alloy co-penetration furnace" is disclosed, which uses a rotating furnace body to achieve uniform heating of the workpieces in the furnace body. This method has some problems in actual application, mainly manifested in that as the furnace body continues to rotate, the workpieces in the furnace body will also flip, which leads to frequent frictional contact between the workpieces. On the one hand, it is easy to damage the workpiece, and on the other hand, it is easy to destroy the multi-element alloy layer on the surface of the workpiece. The above problems have not been solved. An improved technology on the market has proposed a roller bottom multi-element co-penetration furnace, including a furnace body and a heating belt, wherein a plurality of rollers are arranged in a transverse arrangement in the furnace body, one end of the roller is engaged with the inner wall of the furnace body, and the other end extends out of the furnace body and is connected to the motor, the motor is used to drive the roller to rotate, and the roller is used to drive the workpiece to move. Compared with the prior art, the disclosed technology adopts a method of transporting the workpiece inside the furnace body by rollers arranged at intervals, so that the workpiece can be fully exposed to hot air during the transportation process, and the co-infiltration effect is guaranteed. On the basis of ensuring the co-infiltration effect, damage to the workpiece and destruction of the multi-element alloy layer are avoided, and product quality is effectively guaranteed. For example, a multi-element gas co-infiltration strengthening system and process thereof belong to the field of workpiece heat treatment technology, which solves the problems of poor environmental protection, poor infiltration effect and single infiltration layer of traditional heat treatment, and includes a feeding unit, a ventilation unit, a heating pre-infiltration unit, a multi-element gas co-infiltration strengthening unit, a cooling protection unit and a discharge unit connected in sequence. The present invention replaces the traditional acid corrosion protection process through the cooperation of various units, thereby improving environmental protection. The ventilation unit is used to avoid the participation of air and improve the sufficiency of multi-atom penetration. The heating pre-penetration unit is combined with microwave radiation to change the surface structure of the lamp pole, accelerating the subsequent penetration speed and depth of nitrogen, sulfur and chromium elements. During the multi-gas co-penetration strengthening treatment, ammonia atmosphere nitriding treatment is first adopted, and then the penetration-promoting ball B is used to release gaseous carbon-sulfur-chromium complexes to achieve carburizing, sulfurizing and chromizing co-penetration treatment, making the penetration layer structure complex and diversified, and improving the surface hardness of the lamp pole.

[0004] However, the aforementioned improved technology is difficult to transport when applied to longer workpieces such as lamp poles and signal poles. The bottom part in contact with the roller cannot always come into contact with the co-penetration gas and powder, and the co-penetration effect cannot be guaranteed. Although the other existing technology mentioned above can solve the problem of transporting long-rod workpieces, it is placed in a stacked manner, and the co-penetration effect still cannot guarantee uniformity. Therefore, it is necessary to improve and optimize the structure of the multi-element co-penetration reactor for processing longer workpieces. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a multi-element co-infiltration reaction furnace for processing workpieces, which solves the problem that the existing improved technology is difficult to transport when applied to longer workpieces such as lamp poles and signal poles, and the bottom contacting the roller cannot always come into contact with the co-infiltration gas and powder.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-element co-infiltration reactor for processing workpieces, comprising a base, a co-infiltration gas providing device and a sealing device; an opening is provided on the upper wall of the base, and a co-infiltration barrel body is provided on the inner wall of the opening, and the co-infiltration barrel body is composed of an upper shell and a lower shell, and the lower shell is fixedly connected to the inner wall of the opening, and the upper shell is rotatably connected to the upper side of the upper shell by a hinge, and the hinge is provided at the connection between the upper shell and the lower shell and close to the rear wall, and a locking structure for locking is provided on the opposite side of the upper shell and the lower shell and away from the hinge, and a cover opening driving structure for driving the upper shell to rotate and open along the hinge is provided between the upper shell and the rear wall of the base, and the inner left wall of the opening and the inner right wall of the opening are rotatably connected to the second rotating rod and the first rotating rod respectively, and the second rotating rod and the first rotating rod are relatively one The ends are fixedly connected to a turntable, and both groups of turntables are provided with a lifting structure for clamping the workpiece, the left wall of the base is fixedly connected to an insulating barrel, and the end of the insulating barrel away from the base is rotatably connected to a driving shaft, and a rotating driving structure for driving the driving shaft to rotate is provided between the driving shaft and the base, and the end of the second rotating rod away from the first rotating rod passes through the side wall of the base and the side wall of the insulating barrel in sequence and extends into the interior of the insulating barrel, and an insulating transmission structure for transmission is provided between the end of the second rotating rod extending into the interior of the insulating barrel and the driving shaft, the front wall of the base is fixedly connected to a front support plate through a support plate, and the upper surface of the front support plate is slidably connected to a movable plate through a sliding structure, and a translation driving structure for driving the movable plate to slide back and forth along the sliding structure is provided between the movable plate and the front support plate, and the upper surface of the movable plate is fixedly connected to a supporting structure for placing the workpiece.

[0009] Preferably, in order to heat the workpiece and avoid internal heat loss, a heating layer for heating and heating is provided on the inner wall of the co-infiltration barrel body, an insulation layer for heat preservation is provided between the heating layer and the inner wall of the co-infiltration barrel body, and an inner liner layer is provided on the inner wall of the heating layer.

[0010] Preferably, the locking structure includes two groups of lock buckles, which are arranged in sequence on the front wall of the co-infiltration barrel in a left-right distribution and are both located opposite to the upper shell and the lower shell. The lock buckles are composed of fixed buckles and movable buckles. The movable buckles are rotatably connected to the front wall of the lower shell, and the fixed buckles are fixedly connected to the front wall of the upper shell and are opposite to the movable buckles in the upper and lower parts.

[0011] Preferably, in order to facilitate opening the upper shell, the cover opening drive structure includes a second electric telescopic rod and a crank. The second electric telescopic rod is fixedly connected to the rear wall of the base, and the crank is rotatably connected to the end of the extended shaft of the second electric telescopic rod. The end of the crank away from the second electric telescopic rod is rotatably connected to the upper wall of the upper shell through a rotating seat.

[0012] Preferably, in order to be able to clamp multiple long-rod workpieces between the two groups of turntables in sequence, the ejection structure includes multiple groups of adjusting screws, ejection cone heads and adjusting handwheels, the multiple groups of adjusting screws are respectively threadedly connected to the inner walls of the two groups of turntables and the two ends of the adjusting screws extend toward the two ends of the turntables, the multiple groups of ejection cone heads are respectively fixedly connected to the opposite ends of the multiple groups of adjusting screws, and the multiple groups of adjusting handwheels are respectively fixedly connected to the ends of the multiple groups of adjusting screws away from the ejection cone heads, and the adjusting screws and the turntables are locked by hexagonal screws.

[0013] Preferably, in order to drive the turntable and multiple groups of long rod-type workpieces to rotate inside the co-infiltration barrel to improve the co-infiltration efficiency, the rotation drive structure includes a drive motor, a chain and two sets of sprockets. The drive motor is fixedly connected to the left wall of the base through a motor fixing seat. The two sets of sprockets are respectively fixedly connected to the outer wall of the drive motor shaft and the end of the drive shaft away from the base. The chain is sleeved on the outer walls of the two sets of sprockets.

[0014] Preferably, in order to prevent the internal heat in the co-osmosis barrel from being transferred outward through the second rotating rod, the thermal insulation transmission structure includes a first thermal insulation plate and a second thermal insulation plate. The first thermal insulation plate and the second thermal insulation plate are both arranged inside the thermal insulation barrel and are respectively located at the opposite end of the drive shaft and the second rotating rod. The first thermal insulation plate is fixedly connected to one end of the second thermal insulation plate facing the second thermal insulation plate with multiple groups of thermal insulation levers. The circumferential side wall of the second thermal insulation plate is provided with multiple groups of lever grooves. The multiple groups of thermal insulation levers are respectively slidably connected to the inner side walls of the multiple groups of lever grooves. The outer walls of the second thermal insulation plate and the thermal insulation lever are both provided with a silicon carbide insulation layer.

[0015] Preferably, in order to facilitate the material supporting structure to enter and exit the co-infiltration barrel, the translation drive structure is a first electric telescopic rod, which is fixedly connected to the upper wall of the front support plate through two sets of supports, and the extended shaft end of the first electric telescopic rod is fixedly connected to the lower wall of the movable plate.

[0016] Preferably, in order to facilitate the transportation of long-rod workpieces toward and removal from the turntable, the supporting structure is a supporting rack, which is fixedly connected to the upper wall of the movable plate and located near the rear wall of the movable plate. The side cross-section of the supporting rack is C-shaped with the mouth facing upward.

[0017] Preferably, in order to enable the translational drive to move more smoothly, the sliding structure includes two groups of slide rails and multiple groups of sliders. The two groups of slide rails are distributed on the left and right and are fixedly connected to the upper wall of the front support plate in sequence. The multiple groups of sliders are slidably connected to the upper walls of the two groups of slide rails in groups of two, and the upper surfaces of the multiple groups of sliders are fixedly connected to the lower wall of the movable plate.

[0018] (3) Beneficial effects

[0019] The present invention provides a multi-element co-infiltration reactor for processing workpieces. It has the following beneficial effects:

[0020] 1. Compared with the existing technology, the multi-element co-infiltration reactor for processing workpieces is driven to open the upper shell by the second electric telescopic rod and the crank, and the long rod workpiece is placed on the support rack through common transportation devices such as forklifts and cranes. The movable plate is driven by the first electric telescopic rod to extend into the co-infiltration barrel, and two sets of left and right opposite ejecting cones are used to respectively support the two end portions of the long rod workpiece, thereby clamping the long rod workpiece, which is very convenient for loading and unloading.

[0021] 2. Compared with the existing technology, this workpiece is processed using a multi-element co-infiltration reactor. During the reaction, the turntable is driven to rotate by the driving motor, thereby driving the long rod-type workpiece clamped between the two sets of turntables to rotate, so that the co-infiltration gas and powder can fully contact the surface of the long rod-type workpiece, fully ensuring the co-infiltration effect.

[0022] 3. Compared with the existing technology, the multi-element co-infiltration reactor for processing workpieces is equipped with a first insulation plate and a second insulation plate between the second rotating rod and the drive shaft. The heat in the co-infiltration barrel is prevented from being transferred outward through the second rotating rod through the insulation lever and the lever groove, thereby improving the comfort of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a partial cross-sectional view of the side structure of the base and the co-infiltration barrel of the present invention;

[0025] Figure 3For the present invention Figure 2 A partial enlarged view of point A in the middle;

[0026] Figure 4 This is a partial cross-sectional view of the interior of the connection structure of the heat-insulating barrel and the co-infiltration barrel of the present invention;

[0027] Figure 5 This is a schematic diagram of the side structure of the first heat insulation disk of the present invention;

[0028] Figure 6 It is a schematic diagram of the side structure of the second insulation disk of the present invention.

[0029] Among them, 1. base; 2. lower shell; 3. upper shell; 4. insulation barrel; 5. drive shaft; 6. motor fixing seat; 7. drive motor; 8. sprocket; 9. chain; 10. lock; 11. support plate; 12. front support plate; 13. slide rail; 14. slider; 15. movable plate; 16. support rack; 17. first electric telescopic rod; 18. rotating seat; 19. crank; 20. second electric telescopic rod; 21. turntable; 22. ejector cone head; 23. first rotating rod; 24. insulation layer; 25. heating layer; 26. liner layer; 27. adjusting screw; 28. adjusting hand wheel; 29. ​​second rotating rod; 30. first insulation disk; 31. second insulation disk; 32. insulation lever; 33. lever slot. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0031] Example:

[0032] like Figures 1 to 6As shown, an embodiment of the present invention provides a multi-element co-infiltration reactor for processing workpieces, including a base 1, a co-infiltration gas providing device and a sealing device; an opening is provided on the upper wall of the base 1, and a co-infiltration barrel body is provided on the inner side wall of the opening, and the co-infiltration barrel body is composed of an upper shell 3 and a lower shell 2, the lower shell 2 is fixedly connected to the inner side wall of the opening, and the upper shell 3 is rotatably connected to the upper side of the upper shell 3 by a hinge, and the hinge is provided at the connection between the upper shell 3 and the lower shell 2 and close to the rear wall. A heating layer 25 for heating and heating is provided on the inner side wall of the co-infiltration barrel body, and an insulation layer 24 for heat preservation is provided between the heating layer 25 and the inner side wall of the co-infiltration barrel body. An inner liner layer 26 is provided on the inner side wall of the heating layer 25, and a sealing device is used to seal the joint after the upper shell 3 and the lower shell 2 are combined. Sealed, the long rod-type workpiece is sent into the co-infiltration barrel after being cleaned, dried and sandblasted, and nitrogen, sulfur, chromium and the like are introduced through the co-infiltration gas providing device, and infiltrated into the surface of the long rod-type workpiece in a heated state to change the surface structure of the long rod-type workpiece. Combined with the addition of co-infiltration alloy powder in the co-infiltration barrel, the diversification enables the surface of the long rod-type workpiece to form a better co-infiltration effect. The rear wall of the co-infiltration barrel is also provided with a common vacuum adsorption system on the market, which is used to extract the internal gas after the co-infiltration is completed. It is a common mature technology on the market and is used in conjunction with the gas supply system, so it is not described in this embodiment. During the co-infiltration reaction, the interior of the co-infiltration barrel is heated by the heating layer 25, and the heat is prevented from being transferred to the outside by the insulation layer 24.

[0033] A locking structure for locking is provided on the opposite side of the upper shell 3 and the lower shell 2 and away from the hinge. The locking structure includes two groups of lock buckles 10. The two groups of lock buckles 10 are arranged in sequence on the front wall of the co-infiltration barrel according to the left and right distribution and are both located opposite to the upper shell 3 and the lower shell 2. The lock buckle 10 is composed of a fixed buckle and a movable buckle. The movable buckle is rotatably connected to the front wall of the lower shell 2, and the fixed buckle is fixedly connected to the front wall of the upper shell 3 and is opposite to the movable buckle up and down. After the upper shell 3 and the lower shell 2 are merged, they are fixed and locked by the lock buckle 10 to prevent the upper shell 3 from being opened by mistake and causing internal gas leakage. When the upper shell 3 needs to be opened, the movable buckle is rotated to open to release the locking constraint of the lock buckle 10 on the upper shell 3 and the lower shell 2.

[0034] A cover-opening drive structure is provided between the upper shell 3 and the rear wall of the base 1, and is used to drive the upper shell 3 to rotate along the hinge to open. The cover-opening drive structure includes a second electric telescopic rod 20 and a crank 19. The second electric telescopic rod 20 is fixedly connected to the rear wall of the base 1, and the crank 19 is rotatably connected to the end of the extended shaft of the second electric telescopic rod 20. The end of the crank 19 away from the second electric telescopic rod 20 is rotatably connected to the upper wall of the upper shell 3 through the rotating seat 18. The upper shell 3 is relatively heavy due to its length. In order to be able to open smoothly and close when needed, the second electric telescopic rod 20 is provided to drive the upper shell 3 to rotate along the hinge, which can avoid the time-consuming and labor-intensive manual opening of the cover and the safety risks.

[0035] The left inner wall of the opening and the right inner wall of the opening are respectively rotatably connected to the second rotating rod 29 and the first rotating rod 23. The second rotating rod 29 and the first rotating rod 23 are fixedly connected to the turntable 21 at the opposite end. The two sets of turntables 21 are provided with a top material structure for clamping the workpiece. The top material structure includes multiple sets of adjusting screws 27, top material cone heads 22 and adjusting hand wheels 28. The multiple sets of adjusting screws 27 are respectively threadedly connected to the inner walls of the two sets of turntables 21 and the two ends of the adjusting screws 27 extend toward the two ends of the turntable 21. The multiple sets of top material cone heads 22 are respectively fixedly connected to the opposite ends of the multiple sets of adjusting screws 27, and the multiple sets of adjusting hand wheels 28 are respectively fixedly connected to the multiple sets of adjusting screws 2 7 is away from one end of the ejecting cone head 22, and the adjusting screw 27 is locked with the turntable 21 by an inner hexagon screw. When the long rod type workpiece is fed between the two groups of turntables 21, the turntable 21 is rotated to make the two opposite groups of the multiple groups of ejecting cone heads 22 align with the left and right ends of the long rod type workpiece respectively. The adjusting screw 27 is driven to rotate by turning the adjusting handwheel 28 to drive the ejecting cone head 22 to approach or move away from the long rod type workpiece. After the two opposite groups of ejecting cone heads 22 approach the long rod type workpiece, they can support its two ends to play a clamping role. After the multiple long rod type workpieces are clamped separately, they do not contact each other, and the surfaces can better contact with the co-infiltration alloy powder and gas.

[0036] An insulating barrel 4 is fixedly connected to the left wall of the base 1, and a drive shaft 5 is rotatably connected to the end of the insulating barrel 4 away from the base 1. A rotating drive structure for driving the drive shaft 5 to rotate is provided between the drive shaft 5 and the base 1. The rotating drive structure includes a drive motor 7, a chain 9 and two sets of sprockets 8. The drive motor 7 is fixedly connected to the left wall of the base 1 through a motor fixing seat 6. The two sets of sprockets 8 are respectively fixedly connected to the outer wall of the shaft extending from the drive motor 7 and the end of the drive shaft 5 away from the base 1. The chain 9 is sleeved on the outer walls of the two sets of sprockets 8. When the drive motor 7 rotates, the drive shaft 5 is driven to rotate through the chain 9 and the two sets of sprockets 8, and then the two sets of turntables 21 are driven to rotate through the drive shaft 5.

[0037] The end of the second rotating rod 29 away from the first rotating rod 23 passes through the side wall of the base 1 and the side wall of the insulation barrel 4 in sequence and extends into the interior of the insulation barrel 4. An insulation transmission structure for transmission is provided between the end of the second rotating rod 29 extending into the interior of the insulation barrel 4 and the drive shaft 5. The insulation transmission structure includes a first insulation disk 30 and a second insulation disk 31. The first insulation disk 30 and the second insulation disk 31 are both arranged in the insulation barrel 4 and are respectively located at the opposite end of the drive shaft 5 and the second rotating rod 29. The first insulation disk 30 is fixedly connected to one end of the second insulation disk 31 with multiple groups of insulation levers 32. The circumferential side wall of the second insulation disk 31 is provided with multiple groups of pull grooves 33. The multiple groups of insulation levers 32 are respectively slidably connected to the inner walls of the multiple groups of pull grooves 33. The second insulation disk 31 is The outer walls of the disk 31 and the insulation lever 32 are both provided with a silicon carbide insulation layer. In order to prevent the heat in the co-infiltration barrel from being transferred outward through the second rotating rod 29, a heat-insulating transmission structure that can both block heat transfer and transmit torque is specially provided between the second rotating rod 29 and the drive shaft 5. The heat transfer is isolated by the second insulation disk 31 and the insulation lever 32 provided with a silicon carbide insulation layer; the heat transfer is isolated by the second insulation disk 31 and the insulation lever 32 provided with a silicon carbide insulation layer. When loading or unloading is required, the long rod workpiece is supported by the support rack 16, and the extension and retraction action of the extension shaft of the first electric telescopic rod 17 drives the support rack 16 to enter and exit the co-infiltration barrel, so that loading and unloading are very easy.

[0038] The front wall of the base 1 is fixedly connected to the front support plate 12 through the support plate 11, and the upper surface of the front support plate 12 is slidably connected to the movable plate 15 through a sliding structure. A translation driving structure for driving the movable plate 15 to slide back and forth along the sliding structure is provided between the movable plate 15 and the front support plate 12. The upper surface of the movable plate 15 is fixedly connected to a supporting structure for placing workpieces. The translation driving structure is a first electric telescopic rod 17, which is fixedly connected to the upper wall of the front support plate 12 through two sets of supports. The end of the first electric telescopic rod 17 extends out of the shaft and is fixedly connected to the lower wall of the movable plate 15. The supporting structure is a supporting rack 16, which is fixedly connected to the movable plate 1 5 and is located near the rear wall of the movable plate 15. The side section of the supporting frame 16 is C-shaped with the mouth facing upward. The sliding structure includes two sets of slide rails 13 and multiple sets of sliders 14. The two sets of slide rails 13 are distributed on the left and right and are fixedly connected to the upper wall of the front support plate 12 in sequence. The multiple sets of sliders 14 are slidably connected to the upper walls of the two sets of slide rails 13 in groups of two. The upper surfaces of the multiple sets of sliders 14 are fixedly connected to the lower wall of the movable plate 15. When loading or unloading is required, the long rod-type workpiece is taken up by the supporting frame 16, and the extension and retraction of the extension shaft of the first electric telescopic rod 17 drive the supporting frame 16 to enter and exit the co-osmosis barrel, making loading and unloading very easy.

[0039] Working principle: The sealing device is used to seal the joints after the upper shell 3 and the lower shell 2 are combined. After the long rod workpiece is cleaned, dried and sandblasted, it is sent into the co-penetration barrel. Nitrogen, sulfur and chromium elements are introduced through the co-penetration gas supply device. Under heating, they penetrate into the surface of the long rod workpiece to change the surface structure of the long rod workpiece. Combined with the addition of co-penetration alloy powder in the co-penetration barrel, the diversification makes the surface of the long rod workpiece form a better co-penetration effect. The rear wall of the co-penetration barrel is also provided with a common vacuum adsorption system on the market, which is used to extract the internal gas after the co-penetration is completed. It is a common mature technology on the market and is used in conjunction with the gas supply system. Therefore, it is not described in this embodiment. During the co-infiltration reaction, the interior of the co-infiltration barrel is heated by the heating layer 25, and the heat is prevented from being transferred to the outside by the heat insulation layer 24. After the upper shell 3 and the lower shell 2 are combined, they are fixed and locked by the lock buckle 10 to prevent the upper shell 3 from being opened by mistake and causing internal gas leakage. When the upper shell 3 needs to be opened, the movable buckle is turned to release the locking constraint of the lock buckle 10 on the upper shell 3 and the lower shell 2. The upper shell 3 is relatively heavy due to its length. In order to be able to open it smoothly and close it when needed, a second electric telescopic rod 20 is provided to drive the upper shell 3 to rotate along the hinge to avoid people The opening of the cover is time-consuming and labor-intensive, and there is also a safety risk. When the long rod-type workpiece is fed between the two sets of turntables 21, the turntables 21 are rotated to make the multiple sets of ejecting cone heads 22, two of which are opposite to each other, align with the left and right ends of the long rod-type workpiece respectively. By turning the adjusting handwheel 28, the adjusting screw 27 is driven to rotate, so as to drive the ejecting cone heads 22 to approach or move away from the long rod-type workpiece. After the two sets of opposite ejecting cone heads 22 approach the long rod-type workpiece, they can support its two ends to play a clamping role. After the multiple long rod-type workpieces are clamped separately, they do not contact each other, and the surfaces can better contact with the co-infiltrated alloy powder and gas. When the drive motor 7 rotates, the chain 9 and the two sets of The sprocket 8 drives the drive shaft 5 to rotate, and then drives the two sets of turntables 21 to rotate through the drive shaft 5. In order to prevent the heat in the co-infiltration barrel from being transferred outward through the second rotating rod 29, a heat-insulating transmission structure is specially provided between the second rotating rod 29 and the drive shaft 5, which can both block the heat transfer and transmit torque. The heat transfer is isolated by the second heat-insulating disk 31 and the heat-insulating lever 32 provided with a silicon carbide insulation layer. When loading or unloading is required, the long-rod workpiece is supported by the support rack 16, and the extension and retraction action of the extension shaft of the first electric telescopic rod 17 drives the support rack 16 to enter and exit the co-infiltration barrel, making loading and unloading very easy.

[0040] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-element co-infiltration reaction furnace for processing workpieces, comprising a base (1), a co-infiltration gas supply device and a sealing device; characterized in that: The upper wall of the base (1) is provided with an opening, and the inner side wall of the opening is provided with a co-infiltration barrel body, and the co-infiltration barrel body is composed of an upper shell (3) and a lower shell (2), the lower shell (2) is fixedly connected to the inner side wall of the opening, and the upper shell (3) is rotatably connected to the upper side of the lower shell (2) by a hinge, and the hinge is provided at the connection between the upper shell (3) and the lower shell (2) and close to the rear wall of the base (1), and a locking mechanism for locking the upper shell (3) and the lower shell (2) is provided on the opposite side and away from the hinge. A locking structure is provided between the upper shell (3) and the rear wall of the base (1), and a cover opening driving structure for driving the upper shell (3) to rotate and open along the hinge is provided. The inner left wall of the base (1) and the inner right wall of the base (1) are respectively rotatably connected to the second rotating rod (29) and the first rotating rod (23). The second rotating rod (29) and the first rotating rod (23) are fixedly connected to the opposite ends of the first rotating rod (21). The two sets of rotating rods (21) are provided with a top material structure for clamping the workpiece. The left wall of the seat (1) is fixedly connected to an insulating barrel (4), and the end of the insulating barrel (4) away from the base (1) is rotatably connected to a drive shaft (5). A rotating drive structure for driving the drive shaft (5) to rotate is provided between the drive shaft (5) and the base (1). The end of the second rotating rod (29) away from the first rotating rod (23) sequentially penetrates the left wall of the base (1) and the right wall of the insulating barrel (4) and extends into the interior of the insulating barrel (4). The second rotating rod (29) extends into the interior of the insulating barrel (4). A heat-insulating transmission structure for transmission is provided between the end and the driving shaft (5); the front wall of the base (1) is fixedly connected to a front support plate (12) through a support plate (11); the upper surface of the front support plate (12) is slidably connected to a movable plate (15) through a sliding structure; a translation driving structure for driving the movable plate (15) to slide forward and backward along the sliding structure is provided between the movable plate (15) and the front support plate (12); and a supporting structure for placing a workpiece is fixedly connected to the upper surface of the movable plate (15).

2. The multi-element co-infiltration reactor for processing workpieces according to claim 1, characterized in that: The inner wall of the co-infiltration barrel body is provided with a heating layer (25) for heating and raising the temperature, a heat-insulating layer (24) for heat preservation is provided between the heating layer (25) and the inner wall of the co-infiltration barrel body, and an inner liner layer (26) is provided on the inner wall of the heating layer (25).

3. The multi-element co-infiltration reactor for processing workpieces according to claim 2, characterized in that: The locking structure comprises two groups of lock buckles (10), which are sequentially arranged on the front wall of the co-osmosis barrel body according to a left-right distribution and are both located at positions opposite to the upper shell body (3) and the lower shell body (2). The lock buckles (10) are composed of fixed buckles and movable buckles. The movable buckles are rotatably connected to the front wall of the lower shell body (2), and the fixed buckles are fixedly connected to the front wall of the upper shell body (3) and are opposite to the movable buckles in upper and lower directions.

4. The multi-element co-infiltration reactor for processing workpieces according to claim 3, characterized in that: The cover opening drive structure comprises a second electric telescopic rod (20) and a crank (19); the second electric telescopic rod (20) is fixedly connected to the rear wall of the base (1); the crank (19) is rotatably connected to the end of the shaft extending from the second electric telescopic rod (20); and the end of the crank (19) away from the second electric telescopic rod (20) is rotatably connected to the upper wall of the upper shell (3) via a rotating seat (18).

5. The multi-element co-infiltration reactor for processing workpieces according to claim 4, characterized in that: The ejection structure comprises a plurality of adjusting screws (27), ejection cone heads (22) and an adjusting hand wheel (28), wherein the plurality of adjusting screws (27) are respectively threadedly connected to the inner walls of the two sets of turntables (21) and the two ends of the adjusting screws (27) extend toward the two ends of the turntables (21), the plurality of ejection cone heads (22) are respectively fixedly connected to the opposite ends of the plurality of adjusting screws (27), and the plurality of adjusting hand wheels (28) are respectively fixedly connected to the ends of the plurality of adjusting screws (27) away from the ejection cone heads (22), and the adjusting screws (27) and the turntables (21) are locked by hexagon socket screws.

6. The multi-element co-infiltration reaction furnace for processing workpieces according to claim 5, characterized in that: The rotary drive structure comprises a drive motor (7), a chain (9) and two sets of sprockets (8), wherein the drive motor (7) is fixedly connected to the left wall of the base (1) via a motor fixing seat (6), and the two sets of sprockets (8) are respectively fixedly connected to the outer wall of the drive motor (7) extending out of the shaft and the end of the drive shaft (5) away from the base (1), and the chain (9) is sleeved on the outer walls of the two sets of sprockets (8).

7. The multi-element co-infiltration reactor for processing workpieces according to claim 6, characterized in that: The heat-insulating transmission structure includes a first heat-insulating disc (30) and a second heat-insulating disc (31). The first heat-insulating disc (30) and the second heat-insulating disc (31) are both arranged inside the heat-insulating barrel (4) and are respectively located at the opposite end of the drive shaft (5) and the second rotating rod (29). The first heat-insulating disc (30) is fixedly connected to one end of the second heat-insulating disc (31) with multiple groups of heat-insulating levers (32). The circumferential side wall of the second heat-insulating disc (31) is provided with multiple groups of lever grooves (33). The multiple groups of heat-insulating levers (32) are respectively slidably connected to the inner side walls of the multiple groups of lever grooves (33). The outer walls of the second heat-insulating disc (31) and the heat-insulating levers (32) are both provided with a silicon carbide heat-insulating layer.

8. The multi-element co-infiltration reactor for processing workpieces according to claim 7, characterized in that: The translation drive structure is a first electric telescopic rod (17), which is fixedly connected to the upper wall of the front support plate (12) through two sets of supports, and the extended shaft end of the first electric telescopic rod (17) is fixedly connected to the lower wall of the movable plate (15).

9. The multi-element co-infiltration reactor for processing workpieces according to claim 8, characterized in that: The supporting structure is a supporting frame (16), which is fixedly connected to the upper wall of the movable plate (15) and is located near the rear wall of the movable plate (15). The side view cross section of the supporting frame (16) is C-shaped with the mouth facing upward.

10. The multi-element co-infiltration reaction furnace for processing workpieces according to claim 9, characterized in that: The sliding structure comprises two groups of slide rails (13) and multiple groups of sliders (14). The two groups of slide rails (13) are distributed left and right and are fixedly connected to the upper wall of the front support plate (12) in sequence. The multiple groups of sliders (14) are slidably connected to the upper walls of the two groups of slide rails (13) in groups of two. The upper surfaces of the multiple groups of sliders (14) are all fixedly connected to the lower wall of the movable plate (15).

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