Ion nitriding equipment with double-layer heat insulation structure

Abstract

The utility model provides ion nitriding and nitriding equipment with a double-layer heat insulation structure, which belongs to the technical field of nitriding furnaces and comprises a furnace body, a heat insulation component and a lifting component. A placing seat is arranged at the bottom of the furnace body, and the furnace body covers the top of the placing seat; the inner container is installed in the furnace body, the heat insulation cavity is formed between the furnace body and the inner container, the inorganic ceramic fiber board is installed in the heat insulation cavity, the inorganic ceramic fiber board is in attached contact with the inner container, when machining is started, the temperature of the inner container rises, heat is diffused outwards through the inner container, and the inorganic ceramic fiber board is heated. The inorganic ceramic fiber board has the characteristics of high temperature resistance and low heat conductivity, can prevent heat from being dissipated outwards and plays a role in heat insulation, meanwhile, the heat insulation cavity is filled with the heat preservation rock wool board, the rock wool board has heat preservation and heat insulation performance, the heat diffusion effect is further blocked, and heat waste caused by furnace body temperature diffusion consumption is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of nitriding furnaces, in particular to ion nitriding and nitriding equipment with a double-layer heat insulation structure. Background Art

[0002] Ion nitriding is a chemical heat treatment process in which a glow discharge is generated by applying a DC voltage of several hundred volts between the anode and the workpiece in a low-vacuum, nitrogen-containing atmosphere. Ion nitriding is known by various names, such as ion nitriding, glow discharge nitriding, ion bombardment nitriding, and plasma nitriding. Existing ion nitriding equipment can easily lead to defects such as uneven nitriding layers on the workpiece surface, resulting in scrap or repair. This is primarily due to the different distances between the workpiece's leading and trailing ends and the anode, as well as uneven airflow velocities. Among them, the application number is "CN201921158778.X", which is a uniform ion nitriding device. The utility model is equipped with several air guide tubes, and the air guide tubes are connected to the cavity at the same time. They are extended to the outside of the furnace body through the exhaust pipe and connected to the external exhaust equipment. The gas inside the cover can be evenly extracted, which is beneficial to improve the uniformity of nitriding. The carrier plate is driven to rotate by motor No. 1, so that the workpiece moves in a circular motion, so that the head and end of the workpiece are at the same distance from the anode within the same time. However, the furnace body still needs some improvement during use. Since the interior of the furnace body does not have a good thermal insulation structure, the temperature inside the furnace is easily transferred excessively to the outside, resulting in an increase in the temperature outside the furnace body and a waste of heat. Utility Model Content

[0003] The purpose of the present utility model is to provide an ion nitriding and nitriding equipment with a double-layer thermal insulation structure to solve the problem raised in the above-mentioned background technology that the internal temperature of the furnace is easily excessively transferred to the outside due to the lack of a good thermal insulation structure inside the furnace body, resulting in an increase in the external temperature of the furnace body and waste of heat.

[0004] To achieve the above-mentioned object, the present utility model provides the following technical solutions: an ion nitriding and nitriding device with a double-layer heat-insulating structure, comprising a furnace body, a heat-insulating component and a lifting component;

[0005] Wherein: a placement seat is provided at the bottom of the furnace body, the furnace cover is provided on the top of the placement seat, an inner liner is provided inside the furnace body, and a furnace cover is provided on the top of the furnace body;

[0006] The heat insulation component includes a heat insulation cavity formed between the furnace body and the inner tank, wherein an inorganic ceramic fiber board is provided inside the heat insulation cavity, and the inorganic ceramic fiber board is wrapped around the outer wall of the inner tank, and the interior of the heat insulation cavity is also filled with thermal insulation rock wool board.

[0007] The lifting assembly includes a hydraulic cylinder arranged on the back of the furnace body, the telescopic end of the hydraulic cylinder is fixedly connected to the top of the furnace cover, an oil storage tank is provided on one side of the furnace body, an oil pump is installed on the top of the oil storage tank, the output end of the oil pump is connected to an oil supply pipe, one end of the oil supply pipe is connected to the top of the hydraulic cylinder, the bottom of the hydraulic cylinder is connected to an oil return pipe, and the oil return pipe is connected to the oil storage tank.

[0008] As a preferred solution of the present invention: an exhaust pipe is installed on the surface of the furnace body, and an on-off valve is installed on the surface of the exhaust pipe.

[0009] As a preferred solution of the present invention: a drive motor is installed on the top of the exhaust pipe, a worm is fixedly installed on the output end of the drive motor, a fan is rotatably installed inside the exhaust pipe, a worm gear is installed on the back of the fan, and the worm gear is meshed with the worm.

[0010] As a preferred solution of the present invention: an installation cavity is provided inside the placement seat, and a heating tube is installed inside the installation cavity.

[0011] As a preferred solution of the present invention: a temperature sensor is installed on the top of the furnace cover.

[0012] As a preferred solution of the present invention: a control electrical box is provided on one side of the furnace body, and the furnace body, oil pump, opening and closing valve, drive motor, heating tube and temperature sensor are all electrically connected to the control electrical box, and the control electrical box is electrically connected to an external power supply.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) An inner liner is installed inside the furnace body, and a heat-insulating cavity is formed between the furnace body and the inner liner. An inorganic ceramic fiberboard is installed in the heat-insulating cavity so that the inorganic ceramic fiberboard is in contact with the inner liner. When processing starts, the temperature of the inner liner rises, and heat diffuses outward through the inner liner. The inorganic ceramic fiberboard has the characteristics of high temperature resistance and low thermal conductivity, which can prevent heat from dissipating outward and play a heat-insulating role. At the same time, the heat-insulating cavity is filled with a heat-insulating rock wool board. The rock wool board has heat-insulating and heat-insulating properties, which further blocks the diffusion of heat and avoids heat waste caused by the diffusion of the furnace body temperature.

[0015] (2) Through the provided lifting assembly, the oil pump drives the oil inside the oil storage tank to enter the hydraulic cylinder through the oil supply pipe after operation. The hydraulic cylinder rises and drives the furnace cover and furnace body to be lifted from the surface of the placement seat, so as to facilitate the removal of the workpiece after nitriding treatment. When it needs to be put down, the oil inside the hydraulic cylinder flows back into the oil storage tank through the return oil pipe, so that the hydraulic cylinder drives the furnace body cover to be placed on the placement seat, avoiding collision with the workpiece due to manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the thermal insulation component of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the lifting component of the utility model;

[0019] Figure 4 This is a schematic diagram of the fan installation structure of the present utility model;

[0020] Figure 5 This is a schematic diagram of the heating tube installation structure of the present utility model.

[0021] In the figure: 1. Furnace body; 101. Furnace cover; 2. Placement seat; 3. Inner tank; 4. Insulation assembly; 41. Insulation cavity; 42. Inorganic ceramic fiber board; 43. Insulation rock wool board; 5. Lifting assembly; 51. Hydraulic cylinder; 52. Oil storage tank; 53. Oil pump; 54. Oil supply pipe; 55. Oil return pipe; 6. Exhaust pipe; 7. Opening and closing valve; 8. Drive motor; 9. Worm; 10. Fan; 11. Worm gear; 12. Installation cavity; 13. Heating tube; 14. Temperature sensor; 15. Control electrical box. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 5 An ion nitriding and nitriding device with a double-layer thermal insulation structure includes: a furnace body 1, a thermal insulation component 4, and a lifting component 5; a placement seat 2 is provided at the bottom of the furnace body 1, a furnace cover 1 is provided on the top of the placement seat 2, an inner liner 3 is installed inside the furnace body 1, and a furnace cover 101 is installed on the top of the furnace body 1;

[0024] See also Figure 1 , Figure 2 The insulation component 4 includes an insulation cavity 41 formed between the furnace body 1 and the inner tank 3. An inorganic ceramic fiber board 42 is provided inside the insulation cavity 41. The inorganic ceramic fiber board 42 is wrapped around the outer wall of the inner tank 3. The interior of the insulation cavity 41 is also filled with an insulation rock wool board 43.

[0025] During specific use: an inner liner 3 is installed inside the furnace body 1, and an insulating cavity 41 is formed between the furnace body 1 and the inner liner 3. An inorganic ceramic fiber board 42 is installed in the insulating cavity 41 so that the inorganic ceramic fiber board 42 is in contact with the inner liner 3. When processing starts, the temperature of the inner liner 3 rises, and heat diffuses outward through the inner liner 3. The inorganic ceramic fiber board 42 has the characteristics of high temperature resistance and low thermal conductivity, which can prevent heat from dissipating outward and play a role in heat insulation. At the same time, the inside of the insulating cavity 41 is filled with an insulating rock wool board 43. The rock wool board has thermal insulation and heat insulating properties, which further blocks the diffusion of heat and avoids heat waste caused by temperature diffusion consumption of the furnace body 1.

[0026] See also Figure 1 , Figure 3 The lifting assembly 5 includes a hydraulic cylinder 51 arranged on the back of the furnace body 1. The telescopic end of the hydraulic cylinder 51 is fixedly connected to the top of the furnace cover 101. An oil storage tank 52 is provided on one side of the furnace body 1. An oil pump 53 is installed on the top of the oil storage tank 52. The output end of the oil pump 53 is connected to an oil supply pipe 54. One end of the oil supply pipe 54 is connected to the top of the hydraulic cylinder 51. The bottom of the hydraulic cylinder 51 is connected to an oil return pipe 55, and the oil return pipe 55 is connected to the oil storage tank 52.

[0027] During specific use: after the oil pump 53 works, it drives the oil inside the oil storage tank 52 to enter the hydraulic cylinder 51 through the oil supply pipe 54. The hydraulic cylinder 51 rises and drives the furnace cover 101 and the furnace body 1 to be lifted from the surface of the placement seat 2, so as to facilitate the removal of the workpiece after nitriding treatment. When it needs to be put down, the oil inside the hydraulic cylinder 51 flows back into the oil storage tank 52 through the return oil pipe 55, so that the hydraulic cylinder 51 drives the furnace body 1 cover to be placed on the placement seat 2, avoiding collision with the workpiece caused by manual operation.

[0028] See also Figure 4 An exhaust pipe 6 is installed on the surface of the furnace body 1, an opening and closing valve 7 is installed on the surface of the exhaust pipe 6, a driving motor 8 is installed on the top of the exhaust pipe 6, a worm 9 is fixedly installed on the output end of the driving motor 8, a fan 10 is rotatably installed inside the exhaust pipe 6, a worm gear 11 is installed on the back of the fan 10, and the worm gear 11 is meshed with the worm 9.

[0029] During specific use: an exhaust pipe 6 is installed on the surface of the furnace body 1, and an on-off valve 7 on the surface of the exhaust pipe 6 is used to control the switch of the exhaust pipe 6. When the processing is completed and the temperature needs to be lowered, the on-off valve 7 is opened, and the driving motor 8 drives the worm 9 to rotate, and the worm 9 drives the fan 10 to rotate through the worm gear 11, so that the air flow enters the interior of the furnace body 1 to play a cooling role.

[0030] See also Figure 5 An installation cavity 12 is provided inside the placement seat 2 , and a heating tube 13 is installed inside the installation cavity 12 .

[0031] During specific use: the placement seat 2 is provided with an installation cavity 12 inside, and a heating tube 13 is installed inside the installation cavity 12 to facilitate preheating of the workpiece.

[0032] See also Figure 1 A temperature sensor 14 is installed on the top of the furnace cover 101.

[0033] In specific use: the temperature sensor 14 installed on the top of the furnace cover 101 is used to detect the temperature inside the furnace body 1.

[0034] See also Figure 1 A control electrical box 15 is provided on one side of the furnace body 1. The furnace body 1, the oil pump 53, the opening and closing valve 7, the drive motor 8, the heating tube 13 and the temperature sensor 14 are all electrically connected to the control electrical box 15, and the control electrical box 15 is electrically connected to the external power supply.

[0035] During specific use: when the control box 15 is connected to the external power supply, the furnace body 1, the oil pump 53, the opening and closing valve 7, the drive motor 8, the heating tube 13 and the temperature sensor 14 are powered and operated under control; when the control box 15 is disconnected from the external power supply, the equipment stops running.

[0036] An inner liner 3 is installed inside the furnace body 1, and an insulating cavity 41 is formed between the furnace body 1 and the inner liner 3. An inorganic ceramic fiber board 42 is installed in the insulating cavity 41 so that the inorganic ceramic fiber board 42 is in contact with the inner liner 3. When processing starts, the temperature of the inner liner 3 rises, and heat diffuses outward through the inner liner 3. The inorganic ceramic fiber board 42 has the characteristics of high temperature resistance and low thermal conductivity, which can prevent heat from dissipating outward and play a role in heat insulation. At the same time, the insulating cavity 41 is filled with an insulating rock wool board 43. The rock wool board has thermal insulation performance, which further blocks the diffusion of heat and avoids heat waste caused by temperature diffusion consumption of the furnace body 1.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to 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 should be included in the scope of protection of the present invention.

Claims

1. An ion nitriding and nitriding equipment with a double-layer thermal insulation structure, characterized in that: include: A furnace body (1), wherein a placement seat (2) is provided at the bottom of the furnace body (1), a cover of the furnace body (1) is provided on the top of the placement seat (2), an inner container (3) is installed inside the furnace body (1), and a furnace cover (101) is installed at the top of the furnace body (1); A heat insulation component (4), the heat insulation component (4) comprising a heat insulation cavity (41) formed between the furnace body (1) and the inner container (3), an inorganic ceramic fiber board (42) being provided inside the heat insulation cavity (41), the inorganic ceramic fiber board (42) being wrapped around the outer wall of the inner container (3), and the heat insulation cavity (41) being further filled with a thermal insulation rock wool board (43), A lifting assembly (5) includes a hydraulic cylinder (51) arranged on the back of the furnace body (1), the telescopic end of the hydraulic cylinder (51) is fixedly connected to the top of the furnace cover (101), an oil storage tank (52) is provided on one side of the furnace body (1), an oil pump (53) is installed on the top of the oil storage tank (52), the output end of the oil pump (53) is connected to an oil supply pipe (54), one end of the oil supply pipe (54) is connected to the top of the hydraulic cylinder (51), the bottom of the hydraulic cylinder (51) is connected to an oil return pipe (55), and the oil return pipe (55) is connected to the oil storage tank (52).

2. The ion nitriding and nitriding equipment with a double-layer thermal insulation structure according to claim 1, characterized in that: An exhaust pipe (6) is installed on the surface of the furnace body (1), and an opening and closing valve (7) is installed on the surface of the exhaust pipe (6).

3. The ion nitriding and nitriding equipment with a double-layer thermal insulation structure according to claim 2, characterized in that: A driving motor (8) is installed on the top of the exhaust pipe (6), a worm (9) is fixedly installed on the output end of the driving motor (8), a fan (10) is rotatably installed inside the exhaust pipe (6), a worm gear (11) is installed on the back of the fan (10), and the worm gear (11) is meshed with the worm gear (9).

4. The ion nitriding and nitriding equipment with a double-layer thermal insulation structure according to claim 3, characterized in that: An installation cavity (12) is provided inside the placement seat (2), and a heating tube (13) is installed inside the installation cavity (12).

5. The ion nitriding and nitriding equipment with a double-layer thermal insulation structure according to claim 4, characterized in that: A temperature sensor (14) is installed on the top of the furnace cover (101).

6. The ion nitriding and nitriding equipment with a double-layer thermal insulation structure according to claim 5, characterized in that: A control electric box (15) is provided on one side of the furnace body (1); the furnace body (1), the oil pump (53), the opening and closing valve (7), the driving motor (8), the heating tube (13) and the temperature sensor (14) are all electrically connected to the control electric box (15); and the control electric box (15) is electrically connected to an external power supply.

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