Furnace cover sealing ring mounting structure of ultra-deep well type nitriding furnace

Abstract

The utility model relates to a sealing installation device, in particular to a furnace cover sealing ring installation structure of an ultra-deep well type nitriding furnace. An annular groove is formed in the position, connected with the outer edge, of the lower surface of the furnace cover, a sealing ring is installed in the annular groove, a notch is formed in the inner side wall of the annular groove, a second groove is formed in the sealing ring below first protruding teeth, a second boss is arranged on the inner wall, corresponding to the second groove, of the annular groove, and the second boss is located below the notch. The sealing ring is provided with a protruding part protruding downwards, the lower surface of the protruding part is in an inward arc shape, and the side, away from the first protruding teeth, of the protruding part is provided with a receding angle. The device solves the problem that the sealing ring is easy to fall off.

Description

Technical Field

[0001] The invention relates to a sealing installation device, in particular to a furnace cover sealing ring installation structure of an ultra-deep well type nitriding furnace. Background Art

[0002] As a common sealing device, sealing rings are widely used in the mechanical industry. Its main function is to prevent the leakage of liquids, gases and dust, while keeping the friction and wear of mechanical parts within an acceptable range.

[0003] The existing sealing ring is generally installed by installing an O-ring in an annular groove and connecting it in the annular groove by glue. However, the temperature of the nitriding furnace is high during operation, and the glue is easy to fail at high temperature, and the sealing ring is easy to fall off. Summary of the invention

[0004] In order to solve the problems in the related art, the present invention provides a furnace cover sealing ring installation structure for an ultra-deep well nitriding furnace, which solves the problem that the sealing ring is easy to fall off.

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

[0006] The furnace cover sealing ring installation structure of the ultra-deep well nitriding furnace of the present invention includes a furnace cover, an annular groove is provided inside the position where the lower surface of the furnace cover is connected to the outer edge, a sealing ring is installed in the annular groove, a notch is provided on the inner side wall of the annular groove, and a first convex tooth is provided on the sealing ring, and the convex tooth is located in the notch.

[0007] In the above scheme, by setting the sealing ring and the annular groove, when the sealing ring is squeezed, the first protruding tooth of the sealing ring corresponds to the notch of the annular groove, and the notch clamps the first protruding tooth to form a limit, thereby solving the problem of the sealing ring easily falling off.

[0008] The sealing ring below the first protruding tooth has a second groove, and the inner wall of the annular groove corresponding to the second groove has a second boss, the second groove is located in the second boss and matched therewith, and the second boss is located below the notch.

[0009] In the above scheme, a double limit is formed by the cooperation of the first protruding tooth and the notch, the second boss and the second groove, thereby further improving the tightness of the installation.

[0010] The degree of the angle A of the first protruding tooth is 45° to 53°, and the depth of the second groove is greater than the outward protruding length of the first protruding tooth.

[0011] In the above scheme, during installation, the first protruding tooth first enters the annular groove, and the second groove then enters the annular groove, so that the sealing ring can be squeezed into the annular groove, and the first protruding tooth is stuck in the notch and is not easy to fall off.

[0012] The sealing ring has a protrusion protruding downward, and the lower surface of the protrusion is an inward arc shape.

[0013] In the above solution, the sealing effect is effectively improved by setting the lower surface of the sealing ring to be arc-shaped.

[0014] A side of the protrusion away from the first protruding tooth has a relief angle.

[0015] In the above scheme, the setting of the clearance angle is used to make room for the sealing ring when it is installed and squeezed, thereby increasing the deformation amount and improving the sealing effect.

[0016] The sealing ring material is silicone rubber.

[0017] In the above scheme, the sealing ring material is silicone rubber, which can be used for sealing high temperature, high pressure and chemicals, and is easy to install or replace.

[0018] The above solution has the following advantages:

[0019] 1. The furnace cover sealing ring installation structure of the ultra-deep well nitriding furnace of the present invention includes a furnace cover, an annular groove is provided inside the position where the lower surface of the furnace cover is connected to the outer edge, a sealing ring is installed in the annular groove, a notch is provided on the inner side wall of the annular groove, and a convex tooth is provided on the sealing ring, and the convex tooth is located in the notch. Through the arrangement of the sealing ring and the annular groove, when the sealing ring is squeezed, the first convex tooth of the sealing ring corresponds to the notch of the annular groove, and the notch clamps the first convex tooth to form a limit, thereby solving the problem that the sealing ring is easy to fall off.

[0020] 2. A second groove is provided on the sealing ring below the first convex tooth, and a second boss is provided on the inner wall of the annular groove corresponding to the second groove. The first convex tooth is located in the notch to form a double limit, further improving the tightness of the installation. The depth of the second groove is greater than the length of the first convex tooth protruding outward. During installation, the first convex tooth first enters the annular groove, and then the second groove enters the annular groove, so that the sealing ring is squeezed into the annular groove. The first convex tooth is stuck in the notch and is not easy to fall off. By setting the lower surface of the sealing ring into an arc shape, the sealing effect is effectively improved. There is a give-way angle on the side of the protrusion away from the first convex tooth, which is used to give way when the sealing ring is extruded during installation, increase the deformation, and improve the sealing effect. The sealing ring material is silicone rubber, which can be used for sealing high temperature, high pressure and chemicals, and is easy to install or replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the sealing ring structure of the furnace cover of the ultra-deep well nitriding furnace;

[0022] Figure 2 It is a structural schematic diagram of a furnace cover locking device of an ultra-deep well nitriding furnace;

[0023] Figure 3It is an enlarged schematic diagram of the furnace cover locking device part I of the ultra-deep pit nitriding furnace;

[0024] Explanation of the reference numerals: 1. furnace cover; 2. annular groove; 3. sealing ring; 101. first protruding tooth; 102. second groove; 201. notch; 202. second boss; 4. protrusion; 5. clearance angle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, the furnace cover sealing ring installation structure of the ultra-deep well nitriding furnace of the present invention includes a furnace cover 1, an annular groove 2 is provided inside the position where the lower surface of the furnace cover 1 is connected to the outer edge, a sealing ring 3 is installed in the annular groove 2, a notch 201 is provided on the inner wall of the annular groove 2, a first protruding tooth 101 is provided on the sealing ring 3, and the first protruding tooth 101 is located in the notch 201.

[0027] The sealing ring 3 below the first protruding tooth 101 has a second groove 102, and a second boss 202 is provided on the inner wall of the annular groove corresponding to the second groove 102. The second boss 202 is located below the notch 201. The angle A in the first protruding tooth 101 is 45° to 53°, and the depth of the second groove 102 is greater than the protruding length of the first protruding tooth 101.

[0028] The sealing ring 2 has a protrusion 4 protruding downward, the lower surface of the protrusion 4 is an inward arc, and a side of the protrusion 3 away from the first protruding tooth has a clearance angle 5.

[0029] The material of the sealing ring 3 is silicone rubber.

[0030] When in use, insert the sealing ring 2 into the annular groove 1 so that the first protruding tooth 101 is located in the notch 201 and the second groove 102 is located in the second boss 202. The sealing ring 2 is fully installed in place and the furnace cover 1 is closed. The protruding part of the sealing ring 2 abuts against the surrounding of the furnace body to form a seal.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "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 invention 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 invention. In the description of the present invention, 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.

[0032] 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 furnace cover sealing ring installation structure of the ultra-deep pit nitriding furnace is characterized by: The furnace cover (1) comprises an annular groove (2) inside the position where the lower surface of the furnace cover (1) is connected to the outer edge, a sealing ring (3) is installed in the annular groove (2), a notch (201) is provided on the inner side wall of the annular groove (2), a first protruding tooth (101) is provided on the sealing ring (3), and the first protruding tooth (101) is located in the notch (201).

2. The furnace cover sealing ring installation structure of the ultra-deep pit nitriding furnace according to claim 1, characterized in that: The sealing ring (3) below the first protruding tooth (101) has a second groove (102), and a second boss (202) is provided on the inner wall of the annular groove corresponding to the second groove (102). The second groove (102) is located inside the second boss (202) and is adapted thereto, and the second boss is located below the notch (201).

3. The furnace cover sealing ring installation structure of the ultra-deep pit nitriding furnace according to claim 2, characterized in that: The degree of the angle A of the first protruding tooth (101) is 45° to 53°, and the depth of the second groove (102) is greater than the outward protruding length of the first protruding tooth (101).

4. The furnace cover sealing ring installation structure of the ultra-deep pit nitriding furnace according to claim 1, characterized in that: The sealing ring (3) has a protrusion (4) protruding downward, and the lower surface of the protrusion (4) is in an inward arc shape.

5. The furnace cover sealing ring installation structure of the ultra-deep pit nitriding furnace according to claim 4, characterized in that: The side of the protrusion (4) away from the first protruding tooth has a relief angle (5).

6. The furnace cover sealing ring installation structure of the ultra-deep pit nitriding furnace according to claim 1, characterized in that: The sealing ring (3) is made of silicone rubber.

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