Atmosphere nitriding furnace with sealing element cooling structure

Abstract

The utility model discloses an atmosphere nitriding furnace with a sealing element cooling structure, which comprises a furnace body and a furnace cover, an annular boss is arranged at the lower end of the furnace cover, and a first sealing ring is clamped on the outer wall of the annular boss; the atmosphere nitriding furnace further comprises a water tank, a water pump and a plate radiator, an annular flow guide groove with an opening in the upper end is formed in the furnace cover, an annular sealing plate is fixed to the upper end of the furnace cover, a water inlet connector is fixed to one side of the top of the annular sealing plate, and a water outlet connector is fixed to the other side of the top of the annular sealing plate. A water inlet of the water pump communicates with one side of the bottom of the water tank through a water inlet pipe, the water inlet connector communicates with a water outlet of the water pump through a first connecting hose, the water outlet connector communicates with the inlet end of the plate radiator through a second connecting hose, and the outlet end of the plate radiator communicates with the water tank through a water return pipe. According to the utility model, the first sealing ring can be cooled, so that the aging of the first sealing ring can be effectively avoided, and the service life of the first sealing ring can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of atmosphere nitriding furnaces, in particular to an atmosphere nitriding furnace with a sealing component cooling structure. Background Art

[0002] An atmosphere nitriding furnace is a device used for heat treatment of workpieces. At present, the atmosphere nitriding furnaces on the market include a furnace body and a furnace cover. The furnace cover is used to be connected to the upper end of the furnace body and to close the opening of the upper end of the furnace body. The lower end of the furnace cover is provided with an annular boss, and a sealing ring is clamped on the outer wall of the annular boss. The first sealing ring is used to seal the gap between the annular boss and the furnace body. When the atmosphere nitriding furnace is in use, the workpiece is placed inside the furnace body, and after the furnace cover is closed on the furnace body, the atmosphere nitriding furnace can start heat treatment of the workpiece. However, in the above-mentioned atmosphere nitriding furnace structure, since the furnace cover and the furnace body are sealed by the sealing ring, the atmosphere nitriding furnace will generate a higher temperature when heat treating the workpiece, thereby accelerating the aging of the sealing ring, that is, there is a disadvantage of a short service life of the sealing ring. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an atmosphere nitriding furnace with a sealing cooling structure, which can cool the first sealing ring, thereby effectively avoiding aging of the first sealing ring, that is, can increase the service life of the first sealing ring.

[0004] The utility model discloses an atmosphere nitriding furnace with a sealing cooling structure, comprising a furnace body and a furnace cover, wherein the furnace cover is used to be connected to the upper end of the furnace body and to close the opening at the upper end of the furnace body, an annular boss is arranged at the lower end of the furnace cover, a first sealing ring is clamped on the outer wall of the annular boss, and the first sealing ring is used to seal the gap between the annular boss and the furnace body; the atmosphere nitriding furnace also comprises a water tank, a water pump and a plate radiator, an annular guide groove with an upper end opening is arranged on the furnace cover, the lower end of the annular guide groove extends to the inside of the annular boss, and the upper end of the furnace cover is fixed An annular sealing plate is fixed, which is used to seal the opening at the upper end of the annular guide groove. A water inlet joint is fixed on one side of the top of the annular sealing plate, and a water outlet joint is fixed on the other side of the top of the annular sealing plate. Both the water inlet joint and the water outlet joint are connected with the annular guide groove; the water inlet of the water pump is connected with one side of the bottom of the water tank through the water inlet pipe, the water inlet joint is connected with the water outlet of the water pump through the first connecting hose, the water outlet joint is connected with the inlet end of the plate radiator through the second connecting hose, and the outlet end of the plate radiator is connected with the water tank through the return pipe.

[0005] After the utility model adopts the above structure, the water pump can pump the cooling water in the water tank into the annular guide groove, and the cooling water entering the annular guide groove can flow from one side of the annular guide groove to the other side, and then the cooling water can flow into the plate radiator, the plate radiator can dissipate heat and cool the cooling water, and then the cooling water can flow back to the water tank; in the above process, when the cooling water flows through the annular guide groove, the cooling water can cool the annular boss and the first sealing ring, so that the aging of the first sealing ring can be effectively avoided, that is, the service life of the first sealing ring can be increased.

[0006] The utility model discloses an atmosphere nitriding furnace with a sealing cooling structure, wherein a second sealing ring is embedded at the upper end of the furnace cover and located on the inner and outer sides of the annular guide groove, and the second sealing ring is used to seal the gap between the annular sealing plate and the furnace cover; after adopting this structure, under the action of the second sealing ring, the second sealing ring can reliably seal the gap between the annular sealing plate and the furnace cover to prevent cooling water from leaking from the gap between the annular sealing plate and the furnace cover.

[0007] The utility model provides an atmosphere nitriding furnace with a sealing cooling structure, wherein the inner edge and the outer edge of the annular sealing plate are fixed to the upper end of the furnace cover by a plurality of bolts distributed at circumferential intervals, and all the bolts are located on the outside of the two second sealing rings; by adopting this structure, the annular sealing plate can be reliably fixed to the upper end of the furnace cover by the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0009] Figure 1 It is a partial cross-sectional structural schematic diagram of the utility model;

[0010] Figure 2 for Figure 1 Schematic diagram of the structure after enlarging point A in the middle. DETAILED DESCRIPTION

[0011] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0012] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0013] like Figure 1-2 As shown, the atmosphere nitriding furnace with a sealing cooling structure of the utility model comprises a furnace body 1 and a furnace cover 2, the furnace cover 2 is used to be connected to the upper end of the furnace body 1 and to close the opening at the upper end of the furnace body 1, and an annular boss 21 is arranged at the lower end of the furnace cover 2, and a first sealing ring 3 is clamped on the outer wall of the annular boss 21, and the first sealing ring 3 is used to seal the gap between the annular boss 21 and the furnace body 1; the atmosphere nitriding furnace also includes a water tank 4, a water pump 5 and a plate radiator 6, and an annular guide groove 22 with an upper end opening is arranged on the furnace cover 2, and the lower end of the annular guide groove 22 extends to the inside of the annular boss 21, and the upper wall of the furnace cover 2 is provided with a plurality of annular guide grooves 22, and the upper wall of the annular guide grooves 2 ... An annular sealing plate 7 is fixed at the end, and the annular sealing plate 7 is used to seal the opening at the upper end of the annular guide groove 22. A water inlet joint 71 is fixed on one side of the top of the annular sealing plate 7, and a water outlet joint 72 is fixed on the other side of the top of the annular sealing plate 7. The water inlet joint 71 and the water outlet joint 72 are both connected to the annular guide groove 22; the water inlet of the water pump 5 is connected to one side of the bottom of the water tank 4 through the water inlet pipe, the water inlet joint 71 is connected to the water outlet of the water pump 5 through the first connecting hose, the water outlet joint 72 is connected to the inlet end of the plate radiator 6 through the second connecting hose, and the outlet end of the plate radiator 6 is connected to the water tank 4 through the return pipe.

[0014] A second sealing ring 8 is embedded at the upper end of the furnace cover 2 and on the inner and outer sides of the annular guide groove 22. The second sealing ring 8 is used to seal the gap between the annular sealing plate 7 and the furnace cover 2. By adopting this structure, under the action of the second sealing ring, the second sealing ring can reliably seal the gap between the annular sealing plate and the furnace cover to prevent cooling water from leaking from the gap between the annular sealing plate and the furnace cover.

[0015] The inner edge and outer edge of the annular sealing plate 7 are fixed to the upper end of the furnace cover 2 by a plurality of bolts 9 distributed at circumferential intervals, and all the bolts 9 are located on the outside of the two second sealing rings 8; by adopting this structure, the annular sealing plate can be reliably fixed to the upper end of the furnace cover by bolts.

[0016] When using the utility model, the water pump can pump the cooling water in the water tank into the annular guide groove. The cooling water entering the annular guide groove can flow from one side of the annular guide groove to the other side. Then the cooling water can flow into the plate radiator. The plate radiator can dissipate heat and cool the cooling water. Then the cooling water can flow back into the water tank. In the above process, when the cooling water flows through the annular guide groove, the cooling water can cool the annular boss and the first sealing ring to avoid overheating and aging of the first sealing ring, thereby increasing the service life of the first sealing ring.

[0017] 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. An atmosphere nitriding furnace with a sealing cooling structure, comprising a furnace body (1) and a furnace cover (2), wherein the furnace cover (2) is used to be connected to the upper end of the furnace body (1) and to close the opening at the upper end of the furnace body (1), and an annular boss (21) is arranged at the lower end of the furnace cover (2), and a first sealing ring (3) is clamped on the outer wall of the annular boss (21), and the first sealing ring (3) is used to seal the gap between the annular boss (21) and the furnace body (1); characterized in that: The atmosphere nitriding furnace further comprises a water tank (4), a water pump (5) and a plate radiator (6); the furnace cover (2) is provided with an annular guide groove (22) with an upper opening, the lower end of the annular guide groove (22) extends to the interior of the annular boss (21); an annular sealing plate (7) is fixed to the upper end of the furnace cover (2); the annular sealing plate (7) is used to seal the upper opening of the annular guide groove (22); a water inlet joint (71) is fixed to one side of the top of the annular sealing plate (7); the other side of the top of the annular sealing plate (7) is fixed to the water inlet joint (71). A water outlet joint (72) is fixed on one side, and the water inlet joint (71) and the water outlet joint (72) are both connected to the annular guide groove (22); the water inlet of the water pump (5) is connected to one side of the bottom of the water tank (4) through a water inlet pipe, the water inlet joint (71) is connected to the water outlet of the water pump (5) through a first connecting hose, the water outlet joint (72) is connected to the inlet end of the plate radiator (6) through a second connecting hose, and the outlet end of the plate radiator (6) is connected to the water tank (4) through a return pipe.

2. The atmosphere nitriding furnace with a seal cooling structure according to claim 1, characterized in that: A second sealing ring (8) is embedded at the upper end of the furnace cover (2) and located on the inner and outer sides of the annular guide groove (22). The second sealing ring (8) is used to seal the gap between the annular sealing plate (7) and the furnace cover (2).

3. The atmosphere nitriding furnace with a seal cooling structure according to claim 2, characterized in that: The inner edge and the outer edge of the annular sealing plate (7) are fixed to the upper end of the furnace cover (2) by a plurality of bolts (9) distributed at circumferential intervals, and all the bolts (9) are located outside the two second sealing rings (8).

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