Ion nitriding reaction device

Abstract

The utility model provides an ion nitriding reaction device, which belongs to the technical field of ion nitriding and comprises a reaction furnace, an air pressure regulating valve arranged on one side of the top of the reaction furnace, a vacuum extraction pipe arranged on one side of the bottom of the reaction furnace, a vacuum control valve arranged at one end of the vacuum extraction pipe and a thermocouple support arranged at the bottom of the inner wall of the reaction furnace. A ventilation air valve is embedded in the bottom of one side of the reaction furnace, one end of the ventilation air valve is in pipe connection with a thermal insulation three-flow pipe, the thermal insulation three-flow pipe is embedded in the bottom of the inner wall of the reaction furnace, and the two sides of the top of the thermal insulation three-flow pipe are communicated with thermal insulation flow dividing gas conveying pipes in a sealed mode; according to the ionitriding and nitriding reaction device provided by the utility model, the adjusting motor rotates to drive the gear to drive the rack meshed with the gear to rotate, and at the moment, the fan blades drive reaction gas from the bottom to concentrate the gas towards the middle part of the reaction furnace, so that the gas is in full contact with a workpiece, and the ionitriding efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ion nitriding, and in particular relates to an ion nitriding and nitriding reaction device. Background Art

[0002] Existing ion nitriding devices are prone to defects such as uneven nitriding layers on the surface of workpieces, resulting in scrap or rework. The main reasons are that the distances between the head and tail ends of the workpiece and the anode are different, and the air flow velocity is uneven. Among them, the "A uniform ion nitriding device" disclosed in the application number "CN201921158778.X" is also an increasingly mature technology. An air guide tube is fixedly connected to the inner wall of the No. 2 plate, and several air guide tubes are provided. At the same time, the air guide tube is connected to the cavity and extends to the outside of the furnace body through an exhaust pipe and is connected to an external exhaust device. The gas inside the cover can be evenly extracted, which is beneficial to improving the uniformity of nitriding. However, the device still has the following defects: in actual use, although the gas can be ventilated to increase the contact area between the workpiece and the gas, the gas is relatively dispersed during the ion nitriding process on the workpiece surface, and it is not easy to concentrate nitrogen and other gases to react with the workpiece surface. At the same time, the temperature inside the reactor is not easy to maintain at a constant level, affecting the nitriding effect. Summary of the Invention

[0003] The purpose of the utility model is to provide an ion nitriding reaction device, which aims to solve the problems in the prior art that during the ion nitriding process on the surface of a workpiece, the gas is relatively dispersed, making it difficult to concentrate nitrogen and other gases to react with the workpiece surface, and at the same time, the temperature inside the reactor is not easy to maintain at a constant level, which affects the nitriding effect.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a reactor, an air pressure regulating valve is provided on one side of the top of the reactor, a vacuum extraction pipe is provided on one side of the bottom of the reactor, a vacuum control valve is provided at one end of the vacuum extraction pipe, a thermocouple support is provided at the bottom of the inner wall of the reactor, an electrode platform for placing a workpiece is provided on the top of the thermocouple support, a ventilation valve is embedded in the bottom of one side of the reactor, one end of the ventilation valve is connected to a thermal insulation three-flow pipe, the thermal insulation three-flow pipe is embedded in the bottom of the inner wall of the reactor, and both sides of the top of the thermal insulation three-flow pipe are sealed and connected with thermal insulation diversion gas pipes, a plurality of gas nozzles are provided at the outlet end of the thermal insulation diversion gas pipe, and a plurality of electric heating rings are distributed on the inner wall of the reactor.

[0005] In an embodiment of the ion nitriding and nitriding reaction device of the present invention, a sealing cover plate is threadedly connected to the top of the reaction furnace, and a pressure relief valve is provided on one side of the top of the sealing cover plate.

[0006] In this solution, the sealing cover is opened, the workpiece is placed on the workpiece placement electrode table, and the sealing cover is covered. The vacuum extraction tube is used to evacuate the air so that the inside of the reactor is in a vacuum state. At this time, the workpiece placement electrode table is powered on, and the ventilation valve allows the reaction gas to pass through the gas nozzle of the thermal insulation diversion gas pipe. The reaction gas is ejected through the gas nozzle of the thermal insulation diversion gas pipe. At this time, the electric heating ring starts to heat and increase the temperature, thereby increasing the internal temperature of the reactor, accelerating the speed required for the reaction, and reducing the reaction consumption during the reaction heating.

[0007] In an embodiment of an ion nitriding reaction device of the present utility model, a movable ring is rotatably connected to the bottom of the inner wall of the reactor, a rack is provided on the top of the inner wall of the movable ring, and a plurality of fan blades are provided on the top of the movable ring. An adjusting motor is embedded in one side of the bottom of the reactor, and the output end of the adjusting motor passes through one side of the bottom of the reactor and is fixedly connected to a driving gear, and the driving gear is meshed with the rack.

[0008] In this solution, the motor is adjusted to rotate the driving gear to drive the meshing rack to rotate. At this time, the fan blades drive the reaction gas from the bottom, causing the reaction gas to generate a cyclone, concentrating the gas to the middle of the reactor, so that the gas is in full contact with the workpiece, thereby improving the ion nitriding efficiency.

[0009] In an embodiment of the ion nitriding and nitriding reaction device of the present invention, the inner wall of the reaction furnace is provided with a high-temperature resistant insulating sealing layer, and the outer wall of the reaction furnace is wrapped with a thermal insulation layer.

[0010] In this solution, a high-temperature resistant insulating sealing layer is used to prevent gas leakage. When the temperature inside the reactor rises, the thermal insulation layer prevents heat loss and causes hypothermia, thereby reducing heat loss.

[0011] In an embodiment of the ion nitriding and nitriding reaction device of the utility model, an observation window is embedded on one side of the reaction furnace.

[0012] In this solution, the reaction of the workpiece inside the reactor is observed through the observation window.

[0013] In an embodiment of the ion nitriding and nitriding reaction device of the present invention, a temperature detector is provided on one side of the reaction furnace, and a temperature controller is provided at the bottom of the temperature detector.

[0014] In this solution, the temperature difference of the thermocouple support is poured into the temperature detector to display the reaction temperature of the workpiece, and the heating temperature of the electric heating ring is controlled by the temperature controller.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The reaction gas is introduced through the ventilation valve and ejected through the gas nozzle of the temperature-insulated diversion gas pipe. The motor is adjusted to rotate the driving gear and the rack meshed with it to rotate. At this time, the fan blades drive the reaction gas from the bottom, causing the reaction gas to generate a cyclone and concentrate the gas to the middle of the reactor, so that the gas fully contacts the workpiece and improves the ion nitriding efficiency.

[0017] The electric heating ring starts heating and raising the temperature, thereby increasing the temperature inside the reactor, speeding up the reaction, and reducing the reaction consumption during heating. The insulation layer prevents heat loss and thus reduces heat loss. The temperature difference of the thermocouple support is poured into the temperature detector to display the reaction temperature of the workpiece. The heating temperature of the electric heating ring is controlled by the temperature controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the reactor of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the thermal insulation layer and the high-temperature resistant insulating sealing layer of the utility model.

[0022] In the figure: 1. Reactor; 2. Air pressure regulating valve; 3. Vacuum extraction pipe; 4. Vacuum control valve; 5. Thermocouple support; 6. Workpiece placement electrode platform; 7. Ventilation valve; 8. Thermal insulation three-flow pipe; 9. Thermal insulation diversion gas pipe; 10. Gas nozzle; 11. Electric heating ring; 12. Sealing cover; 13. Pressure relief valve; 14. Moving ring; 15. Rack; 16. Fan blade; 17. Adjustment motor; 18. Driving gear; 101. High-temperature resistant insulating sealing layer; 102. Thermal insulation layer; 103. Observation window; 19. Temperature detector; 20. Temperature controller. DETAILED DESCRIPTION

[0023] 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 embodiments described 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.

[0024] See also Figure 1-3The utility model provides the following technical solutions: an ion nitriding and nitriding reaction device, comprising a reactor 1, a pressure regulating valve 2 is provided on one side of the top of the reactor 1, a vacuum extraction pipe 3 is provided on one side of the bottom of the reactor 1, a vacuum control valve 4 is provided at one end of the vacuum extraction pipe 3, a thermocouple support 5 is provided at the bottom of the inner wall of the reactor 1, a workpiece placement electrode table 6 is provided on the top of the thermocouple support 5, a ventilation valve 7 is embedded in the bottom of one side of the reactor 1, one end of the ventilation valve 7 is connected to a thermal insulation three-flow pipe 8, the thermal insulation three-flow pipe 8 is embedded in the bottom of the inner wall of the reactor 1, and both sides of the top of the thermal insulation three-flow pipe 8 are sealed and connected with a thermal insulation diversion gas pipe 9, a plurality of gas nozzles 10 are provided at the outlet end of the thermal insulation diversion gas pipe 9, and a plurality of electric heating rings 11 are distributed on the inner wall of the reactor 1.

[0025] In a specific embodiment of an ion nitriding reaction device, please refer to the figure: a sealing cover plate 12 is threadedly connected to the top of the reaction furnace 1, and a pressure relief valve 13 is provided on one side of the top of the sealing cover plate 12.

[0026] See also Figure 1 : Open the sealing cover 12, place the workpiece on the workpiece placement electrode platform 6, and then cover the sealing cover 12. The vacuum extraction tube 3 is used to evacuate the air so that the inside of the reactor 1 is in a vacuum state. At this time, the workpiece placement electrode platform 6 is powered on, and the ventilation valve 7 introduces the reaction gas. The reaction gas is ejected through the gas nozzle 10 of the insulation diversion gas pipe 9. At this time, the electric heating ring 11 starts to heat and increase the temperature, thereby increasing the internal temperature of the reactor 1, accelerating the speed required for the reaction, and reducing the reaction consumption during the reaction heating.

[0027] For a specific embodiment of an ion nitriding reaction device, please refer to Figure 2 : The bottom of the inner wall of the reactor 1 is rotatably connected to a moving ring 14, the top of the inner wall of the moving ring 14 is provided with a rack 15, and the top of the moving ring 14 is provided with a plurality of fan blades 16. An adjusting motor 17 is embedded in one side of the bottom of the reactor 1, and the output end of the adjusting motor 17 passes through one side of the bottom of the reactor 1 and is fixedly connected to a driving gear 18, which is meshed with the rack 15.

[0028] See also Figure 2 : By adjusting the motor 17 to rotate the driving gear 18, the rack 15 engaged with it is driven to rotate. At this time, the fan blades 16 drive the reaction gas from the bottom, causing the reaction gas to generate a cyclone, and concentrate the gas to the middle of the reactor 1, so that the gas is in full contact with the workpiece, thereby improving the ion nitriding efficiency.

[0029] For a specific embodiment of an ion nitriding reaction device, please refer to Figure 3 : The inner wall of the reaction furnace 1 is provided with a high-temperature resistant insulating sealing layer 101, and the outer wall of the reaction furnace 1 is wrapped with a thermal insulation layer 102.

[0030] See also Figure 3: The high-temperature resistant insulating sealing layer 101 prevents gas leakage. When the temperature inside the reactor 1 rises, the thermal insulation layer 102 prevents heat loss and hypothermia, thereby reducing heat loss.

[0031] For a specific embodiment of an ion nitriding reaction device, please refer to Figure 1 An observation window 103 is embedded on one side of the reactor 1.

[0032] See also Figure 1 : Observe the reaction of the workpiece inside the reactor 1 through the observation window 103.

[0033] In a specific embodiment of an ion nitriding reaction device, please refer to the figure: a temperature detector 19 is provided on one side of the reaction furnace 1, and a temperature controller 20 is provided at the bottom of the temperature detector 19.

[0034] Please refer to the figure: the temperature difference of the thermocouple support 5 is poured into the temperature detector 19 to display the reaction temperature of the workpiece, and the heating temperature of the electric heating ring 11 is controlled by the temperature controller 20.

[0035] The utility model provides an ion nitriding and nitriding reaction device, and the specific usage method is: open the sealing cover 12, place the workpiece on the workpiece placement electrode platform 6, and then cover the sealing cover 12, and the vacuum extraction tube 3 is used to evacuate the air so that the inside of the reactor 1 is in a vacuum state. At this time, the workpiece placement electrode platform 6 is energized, and the ventilation valve 7 introduces the reaction gas, and the reaction gas is ejected through the gas nozzle 10 of the thermal insulation diversion gas pipe 9. The gear 18 is driven by the adjustment motor 17 to rotate and drive the rack 15 engaged with it to rotate. At this time, the fan blades 16 drive the reaction gas from the bottom, so that the reaction gas generates a cyclone, and the gas is concentrated to the middle of the reactor 1, so that the gas is fully in contact with the workpiece, thereby improving the ion nitriding efficiency. At this time, the electric heating ring 11 starts to heat and heat up, thereby increasing the temperature inside the reactor 1, accelerating the speed required for the reaction, reducing the reaction consumption during the reaction heating, and preventing heat loss and hypothermia through the thermal insulation layer 102, thereby reducing heat loss. The temperature difference of the thermocouple support 5 is poured into the temperature detector 19 to display the reaction temperature of the workpiece, and the heating temperature of the electric heating ring 11 is controlled by the temperature controller 20.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An ion nitriding reaction device, comprising a reaction furnace (1), characterized in that: A pressure regulating valve (2) is provided on one side of the top of the reactor (1), a vacuum extraction pipe (3) is provided on one side of the bottom of the reactor (1), a vacuum control valve (4) is provided on one end of the vacuum extraction pipe (3), a thermocouple support (5) is provided on the bottom of the inner wall of the reactor (1), a workpiece placement electrode table (6) is provided on the top of the thermocouple support (5), a ventilation valve (7) is embedded on the bottom of one side of the reactor (1), one end of the ventilation valve (7) is connected to a heat-insulating three-flow pipe (8), the heat-insulating three-flow pipe (8) is embedded in the bottom of the inner wall of the reactor (1), and both sides of the top of the heat-insulating three-flow pipe (8) are sealed and connected to a heat-insulating shunt gas pipe (9), a plurality of gas nozzles (10) are provided at the gas outlet end of the heat-insulating shunt gas pipe (9), and a plurality of electric heating rings (11) are distributed on the inner wall of the reactor (1).

2. The ion nitriding reaction device according to claim 1, characterized in that: A sealing cover plate (12) is threadedly connected to the top of the reactor (1), and a pressure relief valve (13) is provided on one side of the top of the sealing cover plate (12).

3. The ion nitriding reaction device according to claim 1, characterized in that: The bottom of the inner wall of the reactor (1) is rotatably connected to a moving ring (14), the top of the inner wall of the moving ring (14) is provided with a rack (15), and the top of the moving ring (14) is provided with a plurality of fan blades (16). An adjusting motor (17) is embedded in one side of the bottom of the reactor (1), and an output end of the adjusting motor (17) passes through one side of the bottom of the reactor (1) and is fixedly connected to a driving gear (18), and the driving gear (18) is meshed with the rack (15).

4. The ion nitriding reaction device according to claim 1, characterized in that: The inner wall of the reaction furnace (1) is provided with a high-temperature resistant insulating sealing layer (101), and the outer wall of the reaction furnace (1) is wrapped with a thermal insulation layer (102).

5. The ion nitriding reaction device according to claim 1, characterized in that: An observation window (103) is embedded on one side of the reaction furnace (1).

6. The ion nitriding reaction device according to claim 1, characterized in that: A temperature detector (19) is provided on one side of the reaction furnace (1), and a temperature controller (20) is provided at the bottom of the temperature detector (19).

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