Furnace mouth cooling structure of ultra-deep well type nitriding furnace

Abstract

The utility model relates to the technical field of nitriding furnaces, in particular to a furnace mouth cooling structure of an ultra-deep well type nitriding furnace. A central hole for mounting a fan is formed in the middle of the furnace cover, an inner cavity on the periphery of the furnace cover is hollow and forms an annular hollow cavity, the annular hollow cavity forms a water cooling channel, a water inlet and a water outlet are formed in the outer side wall, corresponding to the annular hollow cavity, of the furnace cover, and the furnace cover comprises an annular straight plate; an annular welding plate and an annular sealing plate are arranged on the annular straight plate, and the annular hollow cavity is defined by the annular welding plate, the annular sealing plate and the annular straight plate. The device solves the problem of low cooling speed.

Description

Technical Field

[0001] The utility model relates to the technical field of nitriding furnaces, in particular to a furnace opening cooling structure of an ultra-deep well type nitriding furnace. Background Art

[0002] During the nitriding furnace treatment, it is placed in a certain temperature and a certain medium to allow nitrogen atoms to penetrate into the surface of the workpiece through a chemical heat treatment process, so that the surface of the nitrided workpiece obtains a nitrogen-containing strengthening layer, and a product with high hardness, high wear resistance, high corrosion resistance and high temperature resistance is obtained.

[0003] The existing pit-type nitriding furnace mouth is generally cooled by air cooling, which has a slow cooling speed. Utility Model Content

[0004] In order to solve the problems in the related art, the utility model provides a super-deep well type nitriding furnace mouth cooling structure, which solves the problem of slow cooling speed.

[0005] In order to solve the above problems, the following technical solutions are provided:

[0006] The utility model discloses an ultra-deep well type nitriding furnace mouth cooling structure, which comprises a furnace cover, a center hole for installing a fan is arranged in the middle of the furnace cover, the inner cavity around the furnace cover is hollow, forming an annular hollow cavity, the annular hollow cavity forms a water cooling channel, and a water inlet and a water outlet are arranged on the outer side wall of the furnace cover corresponding to the annular hollow cavity.

[0007] In the above scheme, water cooling circulation is set up to utilize water to lower the furnace mouth temperature and increase the cooling speed, thereby solving the problem of slow cooling speed. By setting the water inlet and outlet, cooling water circulates in the annular hollow cavity to accelerate the cooling speed.

[0008] The furnace cover includes an annular straight plate, on which an annular welding plate and an annular sealing plate are arranged, and the annular hollow cavity is formed by the annular welding plate, the annular sealing plate and the annular straight plate. The annular sealing plate is perpendicular to the annular straight plate, and the bottom surface of the annular sealing plate is located above the annular straight plate. The two sides of the annular welding plate are respectively perpendicular to the annular sealing plate and the annular straight plate.

[0009] In the above scheme, a sealing structure is formed by arranging the annular welding plate, the annular sealing plate and the annular straight plate to prevent water leakage.

[0010] The cross section of the annular welding plate is in the shape of a "7", and the two ends of the "7" are arc-shaped.

[0011] In the above scheme, the end points are set to be arc-shaped to form a welding groove, so that the solder can enter and ensure the stability of the welding.

[0012] The middle vertex of the cross section of the annular welding plate is arc-shaped.

[0013] In the above solution, the apex is set to be an arc, thereby reducing the resistance of water flow.

[0014] The above solution has the following advantages:

[0015] 1. Since the furnace mouth cooling structure of the ultra-deep well nitriding furnace of the utility model includes a furnace cover, a center hole for installing a fan is arranged in the middle of the furnace cover, and the inner cavity around the furnace cover is hollow to form an annular hollow cavity, the annular hollow cavity forms a water cooling channel, and a water inlet and a water outlet are arranged on the outer side wall of the furnace cover corresponding to the annular hollow cavity. Through the setting of the water cooling cycle, water is used to reduce the furnace mouth temperature, thereby improving the cooling speed. Through the setting of the water inlet and the water outlet, the cooling water circulates in the annular hollow cavity to accelerate the cooling speed.

[0016] 2. The furnace cover includes an annular straight plate, on which an annular welding plate and an annular sealing plate are arranged. An annular hollow cavity is surrounded by the annular welding plate, the annular sealing plate and the annular straight plate, forming a sealing structure to prevent water leakage. The cross section of the annular welding plate is in the shape of a "7", and the two ends of the "7" are arc-shaped to form a welding groove to facilitate the entry of solder and ensure the stability of welding. The middle vertex of the cross section of the annular welding plate is arc-shaped, thereby reducing the resistance when water flows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the cooling structure of the furnace mouth of the ultra-deep well nitriding furnace;

[0018] Explanation of the accompanying drawings: 1. annular welding plate; 2. annular sealing plate; 3. annular straight plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1 As shown, the furnace mouth cooling structure of the ultra-deep well nitriding furnace of the utility model includes a furnace cover, a center hole for installing a fan is arranged in the middle of the furnace cover, the inner cavity around the furnace cover is hollow to form an annular hollow cavity, the annular hollow cavity forms a water cooling channel, and a water inlet and a water outlet are arranged on the outer side wall of the furnace cover corresponding to the annular hollow cavity.

[0021] The furnace cover includes an annular straight plate 3, on which an annular welding plate 1 and an annular sealing plate 2 are arranged, and an annular hollow cavity is formed by the annular welding plate 1, the annular sealing plate 2 and the annular straight plate 3. The annular sealing plate 2 and the annular straight plate 3 are perpendicular to each other, and the bottom surface of the annular sealing plate 2 is located above the annular straight plate 3. The two sides of the annular welding plate 1 are perpendicular to the annular sealing plate 2 and the annular straight plate 3 respectively. The cross-section of the annular welding plate 1 is in the shape of a "7", and the two end points of the "7" are arc-shaped, and the middle vertex of the cross-section of the annular welding plate 1 is arc-shaped.

[0022] Open the cooling water valve, and let the cooling water in from the water inlet for water cooling, so that the cooling water flows in the annular hollow cavity and flows out to the water outlet. The water inlet and outlet on the outer wall of the furnace cover should follow the principle of bottom-in and top-out. When the material is cooled to the required temperature, close the cooling water valve.

[0023] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The ultra-deep pit nitriding furnace mouth cooling structure is characterized by: It includes a furnace cover, a center hole for installing a fan is arranged in the middle of the furnace cover, the inner cavity around the furnace cover is hollow to form an annular hollow cavity, the annular hollow cavity forms a water cooling channel, and a water inlet and a water outlet are arranged on the outer side wall of the furnace cover corresponding to the annular hollow cavity.

2. The ultra-deep pit nitriding furnace mouth cooling structure according to claim 1, characterized in that: The furnace cover comprises an annular straight plate (3), on which an annular welding plate (1) and an annular sealing plate (2) are arranged, and the annular hollow cavity is formed by the annular welding plate (1), the annular sealing plate (2) and the annular straight plate (3), the annular sealing plate (2) and the annular straight plate (3) are perpendicular to each other, the bottom surface of the annular sealing plate (2) is located above the annular straight plate (3), and the two sides of the annular welding plate (1) are respectively perpendicular to the annular sealing plate (2) and the annular straight plate (3).

3. The ultra-deep pit nitriding furnace mouth cooling structure according to claim 2, characterized in that: The cross section of the annular welding plate (1) is in the shape of a "7", and the two ends of the "7" are in arc shape.

4. The ultra-deep pit nitriding furnace mouth cooling structure according to claim 3, characterized in that: The middle vertex of the cross section of the annular welding plate (1) is arc-shaped.

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