Material ramming machine for nitriding furnace

Abstract

The utility model discloses a ramming machine for a nitriding furnace, and relates to the technical field of nitriding furnaces. The device comprises a furnace shell, a furnace cover, a furnace lining, a heating element, a stirring assembly, a thermocouple, an ammonia gas inlet pipe and an exhaust pipe, the stirring assembly comprises a stirring motor, an output shaft and stirring blades, the stirring motor is connected with the stirring blades through the output shaft, the output shaft horizontally penetrates through the furnace shell and the furnace lining, and the stirring blades are located on the inner side of the furnace lining; a plurality of sealing rings are arranged at the penetrating position of the output shaft and the furnace shell, a storage tank is arranged on the inner side of the furnace lining, a plurality of holes are formed in the side face of the storage tank, the storage tank is driven by a rotating motor to rotate, and a thermocouple, an ammonia gas inlet pipe and an exhaust pipe are installed on the furnace cover. The nitriding furnace is provided with a horizontally mounted stirring assembly and a rotatable storage tank, so that the flowing effect of gas in the furnace can be ensured; and a plurality of holes are formed in the surface of the storage tank, so that the surface of a part can be fully nitrided after the part material body structure in the storage tank is tamped, and the nitriding quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of nitriding furnaces, in particular to a nitriding furnace pounding machine. Background Art

[0002] Nitriding furnaces are mainly used for surface strengthening treatments such as nitriding, multi-element co-diffusion, low-temperature austenitic nitrocarburizing, oxy-nitrocarburizing, steam oxidation treatment, and low vacuum tempering (or aging) of hardware products such as steel parts, tools and dies, and measuring tools. Nitriding furnaces used for heat treatment usually use fans to stir the gas in the furnace so that the temperature in the upper, middle, and lower parts of the furnace is uniform to ensure consistent nitriding quality. Since the fan shaft is a rotating component, the high-temperature corrosive gas (ammonia mixture) in the furnace rises from the gap between the fan shaft and the furnace cover. Traditional nitriding furnaces are equipped with a single fan structure, which has limited stirring effect and is usually installed at the top of the nitriding furnace; installing it on the top may affect the opening of the furnace cover. If it is installed directly on the furnace cover, it will increase the burden during the opening of the furnace cover to a certain extent. Utility Model Content

[0003] The utility model provides a nitriding furnace pounding machine, which overcomes the shortcomings described in the background technology.

[0004] The technical solution adopted by the utility model to solve its technical problem is:

[0005] A nitriding furnace pounding machine comprises a furnace shell, a furnace cover, a furnace lining, a heating element, a stirring assembly, a thermocouple, an ammonia inlet pipe and an exhaust pipe. The furnace cover is sealed and nested on the top of the furnace shell, and the furnace cover is flush with the top of the furnace shell. A mounting seat is arranged on the side end of the furnace shell. One end of the furnace cover is hinged to the mounting seat through a hinge rod, and the other end is provided with a grab plate. The stirring assembly comprises a stirring motor, an output shaft and a stirring blade. The stirring motor is connected to the stirring blade through the output shaft. The output shaft horizontally penetrates the furnace shell and the furnace lining, and the stirring blade is located on the inner side of the furnace lining. A plurality of sealing rings are arranged at the penetration position of the output shaft and the furnace shell. A storage tank is arranged on the inner side of the furnace lining, and a plurality of holes are arranged on the side of the storage tank. The storage tank is driven to rotate by a rotating motor. A thermocouple, an ammonia inlet pipe and an exhaust pipe are installed on the furnace cover.

[0006] The nitriding furnace pounding machine in the utility model is used to pound the gas in the furnace, and a rotating storage tank is provided to further enhance the flow effect of the gas in the furnace; a plurality of holes are provided on the surface of the storage tank to ensure that the material structure of the parts placed in the storage tank can be fully nitrided after pounding, thereby ensuring the nitriding quality. The horizontally arranged stirring component reduces the weight of the furnace cover compared to setting the stirring component on the furnace cover, and at the same time, can reduce the requirements of the nitrogen gas vertically upward on the gap position on the furnace cover.

[0007] A better technical solution: a bottom platform is arranged inside the furnace lining, a storage tank is rotatably mounted on the bottom platform, and the output end of the rotating motor passes through the bottom platform and is connected to the bottom end of the storage tank.

[0008] A better technical solution: a motor base is arranged on the furnace shell, and the stirring motor is locked and installed on the motor base.

[0009] A better technical solution: a bearing seat is arranged at the side end of the stirring motor, a bearing is installed on the bearing seat, and the bearing is nested in the outer surface of the output shaft.

[0010] A better technical solution: a solenoid valve is provided on the ammonia inlet pipe to facilitate control of opening and closing.

[0011] A better technical solution: a solenoid valve is arranged on the exhaust pipe to facilitate opening and closing.

[0012] A preferred technical solution: The heating element is spirally arranged on the furnace lining.

[0013] A preferred technical solution: The thickness of the furnace lining is 260-300 mm, and the furnace lining is formed by folding and compressing a plurality of aluminum silicate refractory fibers.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model is provided with a horizontally installed stirring assembly and a rotatable storage tank, which can fully ensure the flow effect of the gas in the furnace; a plurality of holes are provided on the surface of the storage tank, which ensures that the material structure of the parts placed in the storage tank can be fully nitrided after being pounded, thereby ensuring the nitriding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0019] Description of main reference numerals:

[0020] 1. Furnace shell; 2. Furnace cover; 3. Furnace lining; 4. Heating element; 5. Stirring assembly; 6. Thermocouple; 7. Ammonia inlet pipe; 8. Exhaust pipe; 9. Mounting seat; 10. Hinge rod; 11. Grab plate; 12. Storage tank; 121. Hole; 13. Sealing ring; 51. Stirring motor; 52. Output shaft; 53. Stirring blade; 54. Motor seat; 55. Bearing seat; 60. Base; 121. Rotating motor. DETAILED DESCRIPTION

[0021] like Figure 1-Figure 2 As shown, this embodiment provides a nitriding furnace pounding machine, including a furnace shell 1, a furnace cover 2, a furnace lining 3, a heating element 4, a stirring assembly 5, a thermocouple 6, an ammonia gas inlet pipe 7, and an exhaust pipe 8. The furnace shell 1 is sealed and nested with a furnace cover 2 at the top, and the furnace cover 2 is flush with the top of the furnace shell 1. A mounting seat 9 is arranged at the side end of the furnace shell 1. One end of the furnace cover 2 is hingedly connected to the mounting seat 9 through a hinge rod 10, and a grab plate 11 is arranged at the other end. The stirring assembly 5 includes a stirring motor 51, an output shaft 52, and a stirring blade 53, the stirring motor 51 is connected to the stirring blade 53 through the output shaft 52, the output shaft 52 horizontally penetrates the furnace shell 1 and the furnace lining 3, and the stirring blade 53 is located on the inner side of the furnace lining 3, and a plurality of sealing rings 13 are arranged at the penetration position of the output shaft 52 and the furnace shell 1, a storage tank 12 is arranged on the inner side of the furnace lining 3, a plurality of holes 121 are arranged on the side of the storage tank 12, and the storage tank 12 is driven to rotate by the rotating motor 121, and a thermocouple 6, an ammonia inlet pipe 7, and an exhaust pipe 8 are installed on the furnace cover 2.

[0022] Furthermore, a base 60 is provided inside the furnace lining 3 , and a storage tank 12 is rotatably mounted on the base 60 . The output end of the rotating motor 121 passes through the base 60 and is connected to the bottom end of the storage tank 12 .

[0023] Furthermore, a motor base 54 is provided on the furnace shell 1 , and the stirring motor 51 is locked and installed on the motor base 54 .

[0024] Furthermore, a bearing seat 55 is provided at the side end of the stirring motor 51 , and a bearing is installed on the bearing seat 55 , and the bearing is embedded in the outer surface of the output shaft 52 .

[0025] Furthermore, a solenoid valve is provided on the ammonia gas inlet pipe 7 .

[0026] Furthermore, a solenoid valve is provided on the exhaust pipe 8 .

[0027] Furthermore, the heating element 4 is spirally disposed on the furnace lining 3 .

[0028] Furthermore, the thickness of the furnace lining 3 is 260-300 mm, and the furnace lining 3 is formed by folding and compressing a plurality of aluminum silicate refractory fibers, thereby improving the heat preservation effect of the nitriding furnace and reducing the energy consumption of heat treatment.

[0029] The parts to be nitrided are cleaned and degreased to ensure a clean surface; the parts are then placed in the storage tank 12, the furnace cover 2 is covered, and ammonia is introduced from the ammonia inlet pipe 7; the nitriding furnace is heated to an appropriate temperature, and ammonia is introduced to produce a suitable nitriding atmosphere. When processing smaller parts, a partition plate needs to be set in the storage tank 12 to separate them, thereby ensuring the nitriding effect of each. The stirring motor 51 and / or the rotating motor 121 can be turned on to speed up the flow effect.

[0030] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the content of the specification should still fall within the scope covered by the present invention.

Claims

1. A nitriding furnace pounding machine, characterized in that: It includes a furnace shell, a furnace cover, a furnace lining, a heating element, a stirring assembly, a thermocouple, an ammonia inlet pipe, and an exhaust pipe. The furnace cover is sealed and nested on the top of the furnace shell, and the furnace cover is flush with the top of the furnace shell. A mounting seat is arranged on the side end of the furnace shell. One end of the furnace cover is hinged to the mounting seat through a hinge rod, and the other end is provided with a grab plate. The stirring assembly includes a stirring motor, an output shaft, and a stirring blade. The stirring motor is connected to the stirring blade through the output shaft. The output shaft horizontally penetrates the furnace shell and the furnace lining, and the stirring blade is located on the inner side of the furnace lining. Several sealing rings are arranged at the penetration position of the output shaft and the furnace shell. A storage tank is arranged on the inner side of the furnace lining, and several holes are arranged on the side of the storage tank. The storage tank is driven to rotate by a rotating motor. A thermocouple, an ammonia inlet pipe, and an exhaust pipe are installed on the furnace cover.

2. The nitriding furnace pounding machine according to claim 1, characterized in that: A base is arranged inside the furnace lining, a storage tank is rotatably mounted on the base, and an output end of the rotating motor passes through the base and is connected to the bottom end of the storage tank.

3. The nitriding furnace pounding machine according to claim 1, characterized in that: A motor seat is arranged on the furnace shell, and the stirring motor is locked and installed on the motor seat.

4. The nitriding furnace pounding machine according to claim 1, characterized in that: A bearing seat is arranged at the side end of the stirring motor, a bearing is mounted on the bearing seat, and the bearing is nested in the outer surface of the output shaft.

5. The nitriding furnace pounding machine according to claim 1, characterized in that: A solenoid valve is arranged on the ammonia gas inlet pipe.

6. The nitriding furnace pounding machine according to claim 1, characterized in that: A solenoid valve is arranged on the exhaust pipe.

7. The nitriding furnace pounding machine according to claim 1, characterized in that: The heating element is spirally arranged on the furnace lining.

8. The nitriding furnace pounding machine according to claim 1, characterized in that: The thickness of the furnace lining is 260-300 mm, and the furnace lining is formed by folding and compressing a plurality of aluminum silicate refractory fibers.

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