Salt bath nitriding surface treatment equipment for heat treatment of workpieces

Abstract

The utility model relates to the technical field of heat treatment workpieces, in particular to salt bath nitriding surface treatment equipment for heat treatment workpieces, and adopts the technical scheme that the salt bath nitriding surface treatment equipment comprises a heating furnace and a threaded sleeve, a fixing frame is mounted on the back surface of the heating furnace, and two fixing plates are symmetrically welded on the front surface of the fixing frame; the two fixing plates are provided with second bearings in an embedded mode correspondingly, lead screws are fixedly installed on inner rings of the two second bearings, a second motor is installed at the bottom end of the interior of the fixing frame, a threaded sleeve is connected with the lead screws in a meshed mode, a furnace cover is installed at the rear end of the threaded sleeve, a first bearing is installed on the furnace cover in an embedded mode, and a fixing rod is fixedly installed on an inner ring of the first bearing. A connecting plate is welded to the bottoms of the fixing rods, four hooks are installed at the bottom of the connecting plate at equal intervals, two connecting rods are symmetrically installed at the bottom of the furnace cover, and filter screens are installed at the bottoms of the two connecting rods. The device has the advantages that the heights of the workpiece and the filter screen can be adjusted, and the workpiece and the filter screen can be conveniently treated by a worker.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment workpieces, in particular to salt bath nitriding surface treatment equipment for heat treatment workpieces. Background Art

[0002] Salt bath nitriding surface treatment equipment for heat treatment of workpieces is usually called salt bath nitriding furnace. This equipment immerses the workpiece in a molten salt bath containing salt and nitride at high temperature to enhance the hardness and wear resistance of the workpiece surface. Salt bath nitriding furnace can be used to improve the surface properties of metal workpieces and is usually used in manufacturing industries such as steel, tool steel and gears.

[0003] Announcement No.: CN220352215U, discloses a salt bath nitriding device, including a furnace body, a side end of the furnace body is fixedly connected with a water outlet pipe, the top of the furnace body is provided with a furnace cover, the upper end of the furnace cover is fixedly connected with an air outlet pipe, the bottom of the furnace cover is provided with a rotating mechanism, the inner side wall of the furnace body is fixedly connected with a fixing plate, the upper end of the fixing plate is provided with a filter plate, the bottom of the filter plate is provided with a lifting device, preferably, the rotating mechanism includes a fixing frame, a first motor, a connecting shaft, a connecting plate and a hook. The utility model is provided with a first motor, a connecting plate and a hook, etc. When the cast iron casserole needs to be subjected to salt bath nitriding treatment, the cast iron casserole is first hung on the hook, and then the first motor is started, and the connecting plate is driven to rotate through the connecting shaft, so that the cast iron casserole rotates in the liquid, thereby accelerating the salt bath nitriding treatment rate of the cast iron casserole.

[0004] In summary, the salt bath nitriding device in the prior art CN220352215U drives the connecting plate to rotate through the connecting shaft, so that the cast iron casserole rotates in the liquid, thereby accelerating the salt bath nitriding treatment rate of the cast iron casserole. After the treatment of the cast iron casserole is completed, the height of the cast iron casserole cannot be adjusted, resulting in part of the liquid attached to the surface of the cast iron casserole. It can only flow back into the furnace body after the liquid inside the furnace body is discharged. This is not only troublesome to operate, but also increases the treatment time. Utility Model Content

[0005] The utility model aims to provide a salt bath nitriding surface treatment equipment for heat treating workpieces, which has the advantage of being able to adjust the height of the workpiece and the filter screen, making it convenient for workers to treat the workpiece and the filter screen, and solves the problem that it is inconvenient to collect the liquid attached to the surface of the workpiece after the salt bath nitriding surface treatment equipment has treated the workpiece.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a salt bath nitriding surface treatment equipment for heat-treated workpieces, comprising a heating furnace and a screw sleeve, a fixing frame is installed on the back of the heating furnace, two fixing plates are symmetrically welded on the front of the fixing frame, two bearings are respectively embedded and installed on the two fixing plates, two screw rods are fixedly installed on the inner rings of the two bearings, a motor is installed on the bottom end of the fixing frame, the screw sleeve is meshed with the screw rod, a furnace cover is installed on the rear end of the screw sleeve, a bearing is embedded and installed on the furnace cover, a fixing rod is fixedly installed on the inner ring of the bearing, a motor is installed on the top of the furnace cover above the fixing rod, a connecting plate is welded on the bottom of the fixing rod, four hooks are equidistantly installed on the bottom of the connecting plate, two connecting rods are symmetrically installed on the bottom of the furnace cover, and filters are installed on the bottom of the two connecting rods.

[0007] When using a salt bath nitriding surface treatment device for heat-treating workpieces in the technical solution, a supporting force is provided to the heating furnace through a fixed seat, a molten salt bath is added to the inside of the heating furnace from an opening at the top of the heating furnace, a controller is used to set the temperature for heating the molten salt bath, and the workpieces to be treated are hung on the four hooks at the bottom of the connecting plate in turn. The motor 2 drives the screw rod to rotate through a transmission structure, the screw sleeve moves on the rotating screw rod, and the screw sleeve drives the connecting plate to descend through the furnace cover, so that the workpiece under the connecting plate enters the interior of the heating furnace, and the workpiece is immersed in a molten salt bath containing salt and nitride. The molten salt bath can improve the surface properties of the metal workpiece. The motor 1 drives the fixed seat through the transmission structure. The rod rotates, the fixed rod drives the connecting plate to rotate, and the connecting plate drives the workpiece to rotate through the hook, so that the workpiece can be more fully in contact with the molten salt bath inside the heating furnace, and the fixed debris falling off the surface of the workpiece falls onto the filter, and the filter intercepts the debris. After the workpiece is processed, the second motor drives the screw rod to rotate in the opposite direction through the transmission structure, and the screw sleeve drives the furnace cover to rise, and the furnace cover drives the workpiece to rise through the connecting plate, so that the workpiece leaves the heating furnace, and the furnace cover drives the filter to rise through the connecting rod, so that the filter leaves the heating furnace, and the molten salt bath dripping from the workpiece and the filter falls into the heating furnace. The staff cleans the filter, and the filtered molten salt bath can be discharged from the liquid outlet pipe.

[0008] Preferably, the transmission structure of the second motor is fixedly connected to the bottom of the screw rod. The second motor drives the screw rod to rotate through the transmission structure.

[0009] Preferably, a slider is installed on the back of the screw sleeve, and a slide groove is provided on the front of the fixing frame, and the slider and the slide groove are slidably connected. The slider limits the screw sleeve, and when the screw sleeve moves on the screw rod, the slider slides in the slide groove to prevent the screw sleeve from shaking.

[0010] Preferably, the transmission structure of the motor 1 is fixedly connected to the top of the fixed rod. The motor 1 drives the fixed rod to rotate through the transmission structure.

[0011] Preferably, the top of the heating furnace is provided with an opening which is not closed, a controller is embedded and installed on the front of the heating furnace, and a liquid outlet pipe is embedded and installed on the side of the heating furnace. The molten salt bath is added into the interior of the heating furnace from the opening on the top of the heating furnace, the temperature of the molten salt bath can be set using the controller, and the molten salt bath inside the heating furnace can be discharged from the liquid outlet pipe.

[0012] Preferably, two bearing blocks are symmetrically installed on both sides of the heating furnace. When the filter screen enters the heating furnace, the two bearing blocks provide support force for the filter screen.

[0013] Preferably, movable rods are installed at the four corners of the bottom of the furnace cover, and movable grooves are respectively opened at the four corners of the top of the heating furnace, and the four movable rods are inserted into the four movable grooves. The movable rods limit the furnace cover, and when the furnace cover is raised or lowered, the four movable rods move in the four movable grooves to prevent the furnace cover from shaking.

[0014] Preferably, fixing seats are installed at the four corners of the bottom of the heating furnace to provide support for the heating furnace.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a screw sleeve and a furnace cover, and the workpieces to be processed are hung on the four hooks at the bottom of the connecting plate in sequence. The motor 2 drives the screw rod to rotate through the transmission structure, and the screw sleeve moves on the rotating screw rod. The screw sleeve drives the connecting plate to descend through the furnace cover, so that the workpiece under the connecting plate enters the interior of the heating furnace, and the workpiece is immersed in a molten salt bath containing salt and nitride. The molten salt bath can improve the surface properties of the metal workpiece. The motor 1 drives the fixed rod to rotate through the transmission structure, and the fixed rod drives the connecting plate to rotate. The connecting plate drives the workpiece to rotate through the hook, so that the workpiece can be more fully in contact with the molten salt bath inside the heating furnace. The fixed debris that falls off the surface of the workpiece falls onto the filter, and the filter intercepts the debris. After the workpiece is processed, the second motor drives the screw to rotate in the opposite direction through the transmission structure, and the screw sleeve drives the furnace cover to rise. The furnace cover drives the workpiece to rise through the connecting plate, so that the workpiece leaves the inside of the heating furnace. The furnace cover drives the filter to rise through the connecting rod, so that the filter leaves the inside of the heating furnace, and the molten salt bath dripping from the workpiece and the filter falls into the inside of the heating furnace. The staff cleans the filter, and the filtered molten salt bath can be discharged from the liquid outlet pipe, so that the height of the workpiece and the filter can be adjusted, which is convenient for the staff to process the workpiece and the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first angle;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second angle;

[0019] Figure 3 This is a schematic diagram of the fixing frame structure of the utility model;

[0020] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.

[0021] In the figure: 1. heating furnace; 2. controller; 3. furnace cover; 4. bearing 1; 5. motor 1; 6. screw sleeve; 7. screw rod; 8. fixing plate; 9. bearing 2; 10. slide groove; 11. slide block; 12. fixing frame; 13. liquid outlet pipe; 14. fixing seat; 15. motor 2; 16. movable groove; 17. movable rod; 18. fixing rod; 19. connecting plate; 20. hook; 21. connecting rod; 22. filter screen; 23. bearing block. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] like Figure 1-Figure 4As shown, the utility model proposes a salt bath nitriding surface treatment equipment for heat treatment of workpieces, including a heating furnace 1 and a screw sleeve 6, a fixing frame 12 is installed on the back of the heating furnace 1, and two fixing plates 8 are symmetrically welded on the front of the fixing frame 12, and the two fixing plates 8 are respectively embedded with bearings 9, and the inner rings of the two bearings 9 are fixedly installed with screw rods 7, and the bottom end of the fixing frame 12 is installed with motor 2 15, and the transmission structure of motor 2 15 is fixedly connected with the bottom of the screw rod 7, and the screw sleeve 6 is meshed with the screw rod 7, and a furnace cover 3 is installed at the rear end of the screw sleeve 6, and the furnace cover 3 is embedded with a bearing 4, and the inner ring of the bearing 4 is fixedly installed with a fixing rod 18. A motor 5 is installed on the top of the furnace cover 3 above the fixed rod 18, and the transmission structure of the motor 5 is fixedly connected to the top of the fixed rod 18. A connecting plate 19 is welded to the bottom of the fixed rod 18, and four hooks 20 are equidistantly installed at the bottom of the connecting plate 19. Two connecting rods 21 are symmetrically installed at the bottom of the furnace cover 3, and filters 22 are installed at the bottom of the two connecting rods 21. Two bearing blocks 23 are symmetrically installed on both sides of the heating furnace 1. An opening is provided on the top of the heating furnace 1 and is not closed. A controller 2 is embedded in the front of the heating furnace 1, and a liquid outlet pipe 13 is embedded in the side of the heating furnace 1. Fixed seats 14 are installed at the four corners of the bottom of the heating furnace 1.

[0028] In this embodiment, the heating furnace 1 is provided with supporting force by the fixing seat 14, the molten salt bath is added into the heating furnace 1 from the opening at the top thereof, the temperature of heating the molten salt bath is set by the controller 2, the workpieces to be processed are hung on the four hooks 20 at the bottom of the connecting plate 19 in sequence, the motor 15 drives the screw rod 7 to rotate through the transmission structure, the screw sleeve 6 moves on the rotating screw rod 7, the screw sleeve 6 drives the connecting plate 19 to descend through the furnace cover 3, so that the workpiece under the connecting plate 19 enters the interior of the heating furnace 1, and the workpiece is immersed in the molten salt bath containing salt and nitride. The molten salt bath can improve the surface properties of the metal workpiece, the motor 15 drives the fixing rod 18 to rotate through the transmission structure, the fixing rod 18 drives the connecting plate 19 to rotate, and the connecting plate 19 The workpiece is driven to rotate by the hook 20 so that the workpiece can be more fully in contact with the molten salt bath inside the heating furnace 1. The fixed debris that falls off the surface of the workpiece falls onto the filter screen 22, and the filter screen 22 intercepts the debris. After the workpiece is processed, the motor 15 drives the screw rod 7 to rotate in the opposite direction through the transmission structure, the screw sleeve 6 drives the furnace cover 3 to rise, and the furnace cover 3 drives the workpiece to rise through the connecting plate 19, so that the workpiece leaves the heating furnace 1. The furnace cover 3 drives the filter screen 22 to rise through the connecting rod 21, so that the filter screen 22 leaves the heating furnace 1, and the molten salt bath dripping from the workpiece and the filter screen 22 falls into the heating furnace 1. The staff cleans the filter screen 22 and takes away the processed workpiece. The filtered molten salt bath can be discharged from the liquid outlet pipe 13.

[0029] Embodiment 2

[0030] like Figure 1-Figure 4As shown, the utility model proposes a salt bath nitriding surface treatment equipment for heat-treated workpieces. Compared with the first embodiment, this embodiment also includes: a slider 11 and a movable rod 17. The slider 11 is installed on the back of the screw sleeve 6, and a slide groove 10 is opened on the front of the fixed frame 12. The slider 11 and the slide groove 10 are slidably connected. The four corners of the bottom of the furnace cover 3 are equipped with movable rods 17, and the four corners of the top of the heating furnace 1 are respectively opened with movable grooves 16. The four movable rods 17 are inserted into the four movable grooves 16.

[0031] In this embodiment, the screw sleeve 6 is limited by the slider 11. When the screw sleeve 6 moves on the screw rod 7, the slider 11 slides in the slide groove 10 to prevent the screw sleeve 6 from shaking. The movable rod 17 limits the furnace cover 3. When the furnace cover 3 is raised or lowered, the four movable rods 17 move in the four movable grooves 16 to prevent the furnace cover 3 from shaking.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A salt bath nitriding surface treatment device for heat treating a workpiece, comprising a heating furnace (1) and a screw sleeve (6), characterized in that: A fixing frame (12) is installed on the back of the heating furnace (1), and two fixing plates (8) are symmetrically welded on the front of the fixing frame (12). The two fixing plates (8) are respectively embedded with bearings (9), and the inner rings of the two bearings (9) are fixedly installed with screw rods (7). The bottom end of the fixing frame (12) is installed with motors (15). The screw sleeve (6) is meshed with the screw rod (7). A furnace cover (3) is installed at the rear end of the screw sleeve (6). The furnace cover (3) is embedded with bearings (4), and the inner ring of the bearings (4) is fixedly installed with fixing rods (18). The top of the furnace cover (3) above the fixing rod (18) is installed with motors (5). A connecting plate (19) is welded to the bottom of the fixing rod (18), and four hooks (20) are equidistantly installed at the bottom of the connecting plate (19). Two connecting rods (21) are symmetrically installed at the bottom of the furnace cover (3), and filters (22) are installed at the bottom of the two connecting rods (21).

2. The salt bath nitriding surface treatment equipment for heat-treating workpieces according to claim 1, characterized in that: The transmission structure of the second motor (15) is fixedly connected to the bottom of the screw rod (7).

3. The salt bath nitriding surface treatment equipment for heat-treating workpieces according to claim 1, characterized in that: A sliding block (11) is installed on the back of the screw sleeve (6), a sliding groove (10) is opened on the front of the fixing frame (12), and the sliding block (11) and the sliding groove (10) are slidably connected.

4. The salt bath nitriding surface treatment equipment for heat-treating workpieces according to claim 1, characterized in that: The transmission structure of the motor 1 (5) is fixedly connected to the top of the fixing rod (18).

5. The salt bath nitriding surface treatment equipment for heat-treating workpieces according to claim 1, characterized in that: The top of the heating furnace (1) is provided with an opening which is not closed, a controller (2) is embedded and installed on the front of the heating furnace (1), and a liquid outlet pipe (13) is embedded and installed on the side of the heating furnace (1).

6. The salt bath nitriding surface treatment equipment for heat-treating workpieces according to claim 1, characterized in that: Two bearing blocks (23) are symmetrically installed on both sides of the interior of the heating furnace (1).

7. The salt bath nitriding surface treatment equipment for heat-treating workpieces according to claim 1, characterized in that: Movable rods (17) are installed at the four corners of the bottom of the furnace cover (3), and movable grooves (16) are respectively opened at the four corners of the top of the heating furnace (1), and the four movable rods (17) are inserted into the four movable grooves (16).

8. The salt bath nitriding surface treatment equipment for heat-treating workpieces according to claim 1, characterized in that: Fixed seats (14) are installed at the four corners of the bottom of the heating furnace (1).

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