Nitriding furnace for aluminum profile machining

Abstract

The nitriding furnace comprises a furnace body, a U-shaped sealing strip is arranged on one side of the top end of the furnace body in a sliding mode, hydraulic rods are fixedly arranged on the two sides of the top end of the furnace body, a limiting clamping block is fixedly arranged in the middle of the top end of the U-shaped sealing strip, and an air inlet pipe is arranged on the edge of one side of the top end of the furnace body in a penetrating mode. A supporting frame is fixedly arranged at the upper end of the inner wall of the furnace body, and a handle is fixedly arranged on the edge of one side of the outer wall of the protective cover. After the protective cover is covered, the hydraulic rod is started to push the U-shaped sealing strip to slide at the upper end of the furnace body so as to extrude one side of the protective cover and seal the gap between the protective cover and the open end of the furnace body, and when the U-shaped sealing strip moves, the limiting clamping block at the upper end of the U-shaped sealing strip moves along with the U-shaped sealing strip so as to block the upper side of the protective cover and fix the protective cover. And the sealing device is fixed while sealing is achieved, tedious operation is not needed, and the use convenience of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitriding furnaces, in particular to a nitriding furnace used for processing aluminum profiles. Background Art

[0002] Nitriding furnace is a device with nitriding treatment. Nitriding treatment refers to a chemical heat treatment process that allows nitrogen atoms to penetrate into the surface of the workpiece in a certain medium at a certain temperature. The process of nitriding treatment is to inject ammonia into the nitriding furnace, maintain it at a high temperature of about 500 degrees for an appropriate time, so that the surface of the workpiece in the nitriding furnace obtains a nitrogen-containing strengthening layer. In order to improve the strength and aesthetics of the surface of the aluminum profile, nitriding treatment is required.

[0003] In view of this, Chinese Patent No. CN218115564U proposes a nitriding furnace for aluminum profile processing, which can effectively absorb harmful impurities in the exhaust gas. After absorption, the first filter and the second filter can be used together to effectively filter the impurities and larger particles in the exhaust gas, thereby filtering out the impurities in the exhaust gas, facilitating the treatment of the exhaust gas, and avoiding direct discharge of the exhaust gas generated during the processing to pollute the surrounding environment, thereby helping to improve the environmental protection of the equipment. However, the above technical solution lacks a sealing structure, and the sealing performance of opening and closing after long-term use is poor, which is easy to cause leakage of the injected gas. The ordinary sealing structure needs to be fixed during sealing to prevent it from falling off, which is very troublesome to operate. Therefore, a convenient and quick sealing fixing structure is needed. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a nitriding furnace for aluminum profile processing to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model proposes a nitriding furnace for aluminum profile processing, comprising a furnace body, a sealing locking mechanism is arranged at the upper end of the furnace body, and a circulating flow guiding mechanism is arranged inside the furnace body;

[0006] The sealing locking mechanism includes a protective cover hinged on one side of the top end of the furnace body, a U-shaped sealing strip is slidably provided on one side of the top end of the furnace body, hydraulic rods are fixedly provided on both sides of the top end of the furnace body, and the output ends of the two hydraulic rods are respectively fixedly connected to the two sides of the U-shaped sealing strip, a limiting block is fixedly provided at the middle position of the top end of the U-shaped sealing strip, an air inlet pipe is inserted at the edge of one side of the top end of the furnace body, a support frame is fixedly provided at the upper end of the inner wall of the furnace body, and a handle is fixedly provided at the edge of one side of the outer wall of the protective cover.

[0007] In one example, the circulation guide mechanism includes a plurality of connection holes opened on both sides of the outer wall of the furnace body, guide pipes are fixedly provided on both sides of the outer wall of the furnace body, and the inner wall of each connection hole is respectively connected to the inner walls of the two guide pipes.

[0008] In one example, a first bellows is fixedly provided at the middle position of the bottom of the inner wall of the furnace body, connecting pipes are inserted on both sides of the first bellows, and one end of the two connecting pipes passes through the inner walls of the two connecting holes and is fixedly connected to one end of the two guide pipes.

[0009] In one example, first induced draft fans are provided at both ends of the inner wall of the first wind box, heating pipes are fixed on both sides of the top of the first wind box, a pad is inserted through the upper end of the inner wall of the first wind box, and a plurality of ventilation slots are equidistantly provided at the top of the pad.

[0010] In one example, a through hole is opened on the other side of the outer wall of the furnace body, a second wind box is fixedly provided on one side of the outer wall of the furnace body, and the inner wall of the second wind box is connected to the inner wall of the through hole, and a second induced draft fan is provided on the inner wall of the second wind box.

[0011] In one example, an exhaust pipe is inserted into one side of the second bellows, and sealing valves are rotatably provided on one side of the air inlet pipe and one side of the exhaust pipe.

[0012] In one example, a switch panel is fixedly provided on one side of the outer wall of the furnace body, and the first induced draft fan, the heating tube and the second induced draft fan are all electrically connected to an external power supply through the switch panel.

[0013] The nitriding furnace for aluminum profile processing proposed by the utility model can bring the following beneficial effects:

[0014] 1. A nitriding furnace for aluminum profile processing, after the protective cover is closed, the hydraulic rod is started to push the U-shaped sealing strip to slide on the upper end of the furnace body, thereby squeezing one side of the protective cover to seal the gap between the protective cover and the opening end of the furnace body. When the U-shaped sealing strip moves, the limit block at its upper end moves with it, thereby blocking the upper side of the protective cover to fix it so that it will not fall off, and the sealing is achieved while fixing it, without the need for cumbersome operations, thereby improving the convenience of using the device.

[0015] 2. The nitriding furnace used for aluminum profile processing injects high-temperature ammonia through the air inlet pipe to form a nitrogen-containing strengthening layer on the surface of the aluminum profile. At the same time, the first induced draft fan in the first wind box is started to inhale the unreacted ammonia and enter the guide pipe through the connecting pipe, and then discharge it from the connecting hole at the upper end through the guide pipe, so that it contacts the aluminum profile again. In this process, the temperature of the ammonia is not easy to dissipate due to the heating of the heating pipe, so that the strengthening layer can be continuously formed, thereby improving the utilization rate of the ammonia. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

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

[0018] Figure 2 This is a schematic diagram of the structure of the utility model with the furnace protection cover opened;

[0019] Figure 3 It is a schematic diagram of the structure inside the furnace body of the utility model;

[0020] Figure 4 It is a schematic diagram of the overall structure of the first bellows of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure inside the second bellows of the utility model.

[0022] In the figure: 1. furnace body; 2. protective cover; 3. U-shaped sealing strip; 4. hydraulic rod; 5. limit block; 6. air inlet pipe; 7. support frame; 8. handle; 9. connecting hole; 10. guide pipe; 11. first bellows; 12. connecting pipe; 13. first induced draft fan; 14. heating pipe; 15. pad; 16. ventilation slot; 17. second bellows; 18. second induced draft fan; 19. exhaust pipe; 20. sealing valve. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the utility model, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0024] The examples are as follows:

[0025] The utility model provides Figure 1-5 A nitriding furnace for aluminum profile processing shown in the figure comprises a furnace body 1, and a sealing locking mechanism is provided at the upper end of the furnace body 1;

[0026] The sealing locking mechanism includes a protective cover 2 hinged on one side of the top of the furnace body 1, a U-shaped sealing strip 3 is slidably provided on one side of the top of the furnace body 1, hydraulic rods 4 are fixedly provided on both sides of the top of the furnace body 1, and the output ends of the two hydraulic rods 4 are respectively fixedly connected to the two sides of the U-shaped sealing strip 3, and a limit block 5 is fixedly provided at the middle position of the top of the U-shaped sealing strip 3. An air intake pipe 6 is inserted at the edge of one side of the top of the furnace body 1, a support frame 7 is fixedly provided at the upper end of the inner wall of the furnace body 1, and a handle 8 is fixedly provided at the edge of one side of the outer wall of the protective cover 2, and when the air intake pipe 6 is inlet, the sealing valve 20 at the upper end of the air intake pipe 6 is opened, and the sealing valve 20 at the upper end of the exhaust pipe 19 is closed. When exhaust gas is discharged, the sealing valve 20 at the upper end of the air intake pipe 6 is closed, and the sealing valve 20 at the upper end of the exhaust pipe 19 is opened;

[0027] Furthermore, a first wind box 11 is fixedly provided in the middle position of the bottom of the inner wall of the furnace body 1, connecting pipes 12 are inserted on both sides of the first wind box 11, and one end of the two connecting pipes 12 passes through the inner walls of two connecting holes 9 and is fixedly connected to one end of the two guide pipes 10.

[0028] The first induced draft fan 13 is provided at both ends of the inner wall of the first wind box 11, and the heating pipe 14 is fixedly provided on both sides of the top of the first wind box 11. A pad 15 is inserted at the upper end of the inner wall of the first wind box 11, and a plurality of ventilation slots 16 are provided at equal distances at the top of the pad 15. The ventilation slots 16 provided on the pad 15 can not only inhale ammonia, but also prevent impurities from falling and causing damage to the first induced draft fan 13, and the plurality of connection holes 9 at the upper end are located at the upper end of the support frame 7, so as to facilitate the circulating and guided ammonia to contact the aluminum profile again;

[0029] Furthermore, a through hole is opened on the other side of the outer wall of the furnace body 1 , a second wind box 17 is fixedly provided on one side of the outer wall of the furnace body 1 , and the inner wall of the second wind box 17 is connected to the inner wall of the through hole, and a second induced draft fan 18 is provided on the inner wall of the second wind box 17 .

[0030] An exhaust pipe 19 is inserted into one side of the second wind box 17 , and a sealing valve 20 is rotatably provided on one side of the air inlet pipe 6 and one side of the exhaust pipe 19 .

[0031] A switch panel is fixedly provided on one side of the outer wall of the furnace body 1, and the first induced draft fan 13, the heating tube 14 and the second induced draft fan 18 are all electrically connected to an external power source through the switch panel.

[0032] Working principle: When using the nitriding furnace for aluminum profile processing in this design, the aluminum profile needs to be placed on the upper end of the support frame 7, and then the protective cover 2 is closed by the handle 8 to seal the furnace body 1. After the protective cover 2 is closed, the hydraulic rod 4 is started to push the U-shaped sealing strip 3 to slide on the upper end of the furnace body 1, thereby squeezing one side of the protective cover 2 to seal the gap between the protective cover 2 and the open end of the furnace body 1. When the U-shaped sealing strip 3 moves, the limit block 5 at its upper end moves with it, thereby blocking the upper side of the protective cover 2 to fix it so that it will not fall off, and the sealing is achieved while fixing it without the need for cumbersome operations. The convenience of using the device is improved. After the aluminum profile is placed, high-temperature ammonia is injected through the air inlet pipe 6 to form a nitrogen-containing strengthening layer on the surface of the aluminum profile. At the same time, the first induced draft fan 13 in the first wind box 11 is started to inhale the unreacted ammonia and enter the guide pipe 10 through the connecting pipe 12, and then discharge it from the connecting hole 9 at the upper end through the guide pipe 10, so that it contacts the aluminum profile again. In this process, the temperature of the ammonia is not easy to dissipate through the heating of the heating tube 14, and a strengthening layer can be continuously formed to improve the utilization rate of the ammonia. After the strengthening is completed, the first induced draft fan 13 is turned off, and the second induced draft fan 18 in the second wind box 17 is started to discharge the exhaust gas.

[0033] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0034] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A nitriding furnace for aluminum profile processing, comprising a furnace body (1), characterized in that: The upper end of the furnace body (1) is provided with a sealing locking mechanism, and the interior of the furnace body (1) is provided with a circulation guiding mechanism; The sealing locking mechanism comprises a protective cover (2) hinged on one side of the top end of the furnace body (1); a U-shaped sealing strip (3) is slidably provided on one side of the top end of the furnace body (1); hydraulic rods (4) are fixedly provided on both sides of the top end of the furnace body (1); and the output ends of the two hydraulic rods (4) are respectively fixedly connected to the two sides of the U-shaped sealing strip (3); a limiting block (5) is fixedly provided at the middle position of the top end of the U-shaped sealing strip (3); an air inlet pipe (6) is inserted at the edge of one side of the top end of the furnace body (1); a support frame (7) is fixedly provided at the upper end of the inner wall of the furnace body (1); and a handle (8) is fixedly provided at the edge of one side of the outer wall of the protective cover (2).

2. A nitriding furnace for aluminum profile processing according to claim 1, characterized in that: The circulation guide mechanism comprises a plurality of connection holes (9) provided on both sides of the outer wall of the furnace body (1), guide pipes (10) are fixedly provided on both sides of the outer wall of the furnace body (1), and the inner wall of each connection hole (9) is respectively connected to the inner walls of two guide pipes (10).

3. A nitriding furnace for aluminum profile processing according to claim 2, characterized in that: A first wind box (11) is fixedly provided at the middle position of the bottom of the inner wall of the furnace body (1), connecting pipes (12) are inserted on both sides of the first wind box (11), and one end of the two connecting pipes (12) passes through the inner walls of two connecting holes (9) and is fixedly connected to one end of the two guide pipes (10).

4. A nitriding furnace for aluminum profile processing according to claim 3, characterized in that: First induced draft fans (13) are provided at both ends of the inner wall of the first wind box (11), heating pipes (14) are fixedly provided on both sides of the top end of the first wind box (11), a pad (15) is inserted through the upper end of the inner wall of the first wind box (11), and a plurality of ventilation slots (16) are provided at equal distances at the top end of the pad (15).

5. The nitriding furnace for aluminum profile processing according to claim 1, characterized in that: A through hole is provided on the other side of the outer wall of the furnace body (1), a second wind box (17) is fixedly provided on one side of the outer wall of the furnace body (1), and the inner wall of the second wind box (17) is connected to the inner wall of the through hole, and a second induced draft fan (18) is provided on the inner wall of the second wind box (17).

6. A nitriding furnace for aluminum profile processing according to claim 5, characterized in that: An exhaust pipe (19) is inserted into one side of the second wind box (17), and a sealing valve (20) is rotatably provided on one side of the air inlet pipe (6) and one side of the exhaust pipe (19).

7. The nitriding furnace for aluminum profile processing according to claim 5, characterized in that: A switch panel is fixedly provided on one side of the outer wall of the furnace body (1), and the first induced draft fan (13), the heating tube (14) and the second induced draft fan (18) are all electrically connected to an external power supply via the switch panel.

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