Sealing device of cold treatment furnace

Abstract

The utility model provides a cold treatment furnace sealing device, and relates to the technical field of cold treatment furnace sealing, the cold treatment furnace sealing device comprises a furnace body and a furnace cover rotatably arranged on the side wall of the furnace body, the cold treatment furnace sealing device further comprises a clamping groove assembly, the clamping groove assembly is arranged at the top of the furnace body, and a sealing gasket is embedded in the clamping groove assembly; the extrusion part is arranged on the side portion, opposite to the furnace body, of the furnace cover and used for extruding and limiting the sealing gasket in the clamping groove assembly to prevent the sealing gasket from making contact with a cooling medium when the furnace cover and the furnace body are buckled, and the clamping groove assembly comprises an inner limiting frame arranged at the top of the furnace body and an outer limiting frame arranged on the periphery of the inner limiting frame; the sealing gasket at the top of the furnace body can be extruded and fixed when the furnace cover is closed, the sealing performance of the furnace body is improved, liquid nitrogen leakage during cold treatment of a product is prevented, the sealing gasket can be stored and protected when the furnace cover is opened, friction damage between the sealing gasket and the furnace cover is prevented, and the service life of the furnace cover is prolonged. The service life and the sealing effect of the sealing gasket are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold treatment furnace sealing, in particular to a cold treatment furnace sealing device. Background Art

[0002] Cold treatment is frequently used in machining, mainly to cool the quenched workpiece to room temperature. Natural cooling is slow, and a cold treatment furnace that can quickly and efficiently perform cold treatment is needed to improve the effect of cold treatment during workpiece processing. Currently, cold treatment furnaces require liquid nitrogen for cooling. During the cold treatment of products in existing devices, the sealing rings therein are prone to rapid wear, which can lead to serious nitrogen leakage and uneven temperature in the furnace, thus affecting the effect of the cold treatment of the product. Utility Model Content

[0003] In order to solve the above technical problems, the utility model utilizes the following specific technical solutions:

[0004] A cold treatment furnace sealing device comprises a furnace body and a furnace cover rotatably arranged on the side wall of the furnace body, and further comprises:

[0005] A slot assembly, wherein the slot assembly is arranged on the top of the furnace body and a sealing gasket is embedded in the slot assembly; and

[0006] The extrusion piece is arranged on the side opposite to the furnace cover and the furnace body, and is used to squeeze and limit the sealing gasket in the slot assembly when the furnace cover and the furnace body are buckled together to prevent the sealing gasket from contacting the cooling medium.

[0007] Preferably, the slot assembly includes an inner limit frame arranged on the top of the furnace body and an outer limit frame arranged around the inner limit frame, and a sealing groove for placing a sealing gasket is formed between the inner limit frame and the outer limit frame.

[0008] Preferably, the extrusion member includes a molding which is arranged on the inner side of the furnace cover and corresponds to the sealing groove.

[0009] Preferably, the sizes of the pressure strip, the sealing groove and the sealing gasket match each other, and all of them are square.

[0010] Preferably, the inner side surface of the furnace cover is further provided with outer card slots distributed along the periphery of the pressure strip and matched with the outer limit frame, and inner card slots distributed along the inner side of the pressure strip and matched with the inner limit frame.

[0011] Preferably, the furnace body and the furnace cover are movably connected via a mounting member.

[0012] Preferably, the mounting member comprises a hinge or a rotating shaft provided between the furnace body and the furnace cover.

[0013] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0014] 1. In the present invention, when the product is subjected to cold treatment, the furnace cover is closed to seal the furnace body. At this time, the extrusion piece provided can be pressed into the card slot assembly, thereby squeezing and fixing the sealing gasket in the card slot assembly. Therefore, when the product is subjected to cold treatment by liquid nitrogen, the furnace body can be efficiently sealed to prevent serious nitrogen leakage, which may lead to uneven temperature in the furnace. Moreover, when the furnace cover is opened, the sealing gasket is accommodated inside the card slot assembly, so the sealing gasket will not be damaged by friction due to the opening of the furnace cover.

[0015] 2. In the present invention, the slot assembly includes an inner limit frame and an outer limit frame arranged on the top of the furnace body. The outer limit frame is placed on the periphery of the inner limit frame, and a sealing groove for accommodating a sealing gasket is formed between the inner limit frame and the outer limit frame. When in use, the sealing gasket can be placed in the sealing groove. When the furnace body is sealed through the furnace cover, the pressure strip is pressed into the sealing groove to squeeze and fix the sealing gasket in the groove to achieve an efficient sealing effect on the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the furnace cover opening of the present utility model;

[0017] Figure 2 This is a partial cross-sectional structural diagram of the furnace cover of the present invention when it is opened;

[0018] Figure 3 This is a diagram of the furnace cover closing structure of the present utility model;

[0019] Figure 4 For the utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0020] In the figure: 10, furnace body; 20, furnace cover; 210, outer slot; 220, inner slot; 30, sealing gasket; 40, inner limit frame; 50, outer limit frame; 60, sealing groove; 70, pressure strip. DETAILED DESCRIPTION

[0021] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. Before describing in detail the technical solutions of each embodiment of the present invention, the nouns and terms involved are explained. In this specification, components with the same name or the same number represent similar or identical structures and are for illustrative purposes only.

[0022] Example:

[0023] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4, a cold treatment furnace sealing device includes a furnace body 10 and a furnace cover 20, the furnace cover 20 is rotatably connected to the top side wall of the furnace body 10, in addition, the cold treatment furnace sealing device also includes a slot assembly, a sealing gasket 30 and an extrusion piece. Specifically, the slot assembly is arranged on the top of the furnace body 10, the sealing gasket 30 is embedded in the interior of the slot assembly, and the extrusion piece is arranged on the side of the furnace cover 20 opposite to the furnace body 10. Specifically in this embodiment, the extrusion piece is arranged on the inner side of the furnace cover 20, wherein the extrusion piece is used to squeeze and limit the sealing gasket 30 in the slot assembly when the furnace cover 20 is buckled with the furnace body 10 to prevent the sealing gasket 30 from contacting the cooling medium. It should be noted that the cooling medium in this embodiment is liquid nitrogen. In this way, when the product needs to be cold treated, the furnace cover on the furnace body 10 is closed first. 20, and then the product is cold-treated by liquid nitrogen. At this time, the extrusion piece at the bottom of the furnace cover 20 will be pressed into the inside of the slot assembly at the top of the furnace body 10, so that the sealing gasket 30 inside the slot assembly can be squeezed and fixed. The cooperation between the extrusion piece and the slot assembly can improve the sealing of the furnace body 10, prevent liquid nitrogen from leaking out of the furnace body 10, and cause the problem of uneven temperature inside the furnace body 10, thereby improving the effect of cold treatment of the product. After the cooling treatment of the product is completed, the furnace cover 20 is opened to open the furnace body 10 to take out the product. When the furnace cover 20 is opened, because the sealing gasket 30 is located inside the slot assembly, the sealing gasket 30 will not contact and rub with the furnace cover 20, thereby preventing the sealing gasket 30 from being damaged, and improving the service life of the sealing gasket 30 and the sealing of the furnace body 10.

[0024] Specifically, the card slot assembly includes an inner limit frame 40 and an outer limit frame 50, both of which are arranged on the top of the furnace body 10, and the outer limit frame 50 is coaxially arranged with the inner limit frame 40, and the outer limit frame 50 is entirely wrapped around the periphery of the inner limit frame 40, so that a sealing groove 60 for placing the sealing gasket 30 is formed between the inner limit frame 40 and the outer limit frame 50. When in use, the sealing gasket 30 can be fixedly embedded in the inside of the sealing groove 60. Since the sealing gasket 30 is embedded in the top of the furnace body 10, It is located in the sealing groove 60 formed by the inner limit frame 40 and the outer limit frame 50, so that the sealing gasket 30 can be accommodated and protected to prevent the sealing gasket 30 from being exposed on the surface of the furnace body 10 or the furnace cover 20, and to avoid damage caused by friction when opening and closing the furnace cover 20, thereby further improving the service life of the sealing gasket 30 and the sealing effect of the furnace body; in addition, after the extrusion piece is pressed into the sealing groove 60, the sealing gasket 30 can be squeezed, which can further improve the sealing of the furnace cover 20 and the furnace body 10 and prevent liquid nitrogen leakage.

[0025] In some embodiments, the extrusion part includes a molding 70, which is arranged on the inner side of the furnace cover 20, that is, the molding 70 is arranged on the side of the furnace cover 20 opposite to the furnace body 10, and the molding 70 corresponds to the sealing groove 60. Furthermore, the sizes of the molding 70, the sealing groove 60 and the sealing gasket 30 match, and all three are square, that is, the molding 70 in this embodiment is a square strip, the sealing groove 60 is a square groove corresponding to the molding, and the sealing gasket is located at the square gasket corresponding to the sealing groove. In this way, after the furnace cover 20 is closed, the molding 70 at the bottom of the furnace cover 20 will be stuck in the sealing groove 60, and the entire sealing gasket 30 will be accurately extruded and fixed, thereby improving the sealing effect of the sealing gasket 30.

[0026] The sealing gasket 30 may be made of polytetrafluoroethylene material. The sealing gasket 30 made of polytetrafluoroethylene material has low temperature resistance, thereby preventing the sealing gasket 30 from being damaged by liquid nitrogen.

[0027] In other embodiments, the inner side surface of the furnace cover 20 is further provided with an outer card slot 210 distributed along the periphery of the pressure strip 70 and matching the outer limit frame 50, and an inner card slot 220 distributed along the inner side of the pressure strip 70 and matching the inner limit frame 40. When in use, when the furnace cover 20 is closed and against the furnace body 10, the inner limit frame 40 and the outer limit frame 50 at the top of the furnace body 10 will be respectively inserted into the inner card slot 220 and the outer card slot 210. This not only allows the furnace cover 20 and the furnace body 10 to be tightly closed, but also further improves the sealing between the furnace body 10 and the furnace cover 20.

[0028] Furthermore, the furnace body 10 and the furnace cover 20 are movably connected via mounting parts. It should be noted that the mounting parts can be not only hinges provided between the furnace body 10 and the furnace cover 20, but also rotating shafts provided between the furnace body 10 and the furnace cover 20, as well as other parts that can be used to realize the rotating connection between the furnace cover 20 and the furnace body 10; the furnace cover 20 can be movably connected to the furnace body 10 through movable parts such as hinges or rotating shafts, thereby facilitating the rotation of the furnace cover 20 to open and close the furnace body 10.

[0029] The working principle of the present invention is as follows: when the product needs to be cold treated, the furnace cover 20 on the furnace body 10 is closed first, and then the product is cold treated by liquid nitrogen. At this time, the extrusion piece at the bottom of the furnace cover 20 will be pressed into the sealing groove 60 at the top of the furnace body 10. Since the sealing gasket 30 is embedded in the top of the furnace body 10 and is located in the sealing groove 60 composed of the inner limit 40 and the outer limit frame 50, the sealing gasket 30 can be stored and protected to prevent the sealing gasket 30 from being exposed to the surface of the furnace body 10 or the furnace cover 20, and to avoid damage caused by friction when opening and closing the furnace cover 20, thereby further improving the service life and sealing effect of the sealing gasket 30, and after the extrusion piece is pressed into the sealing groove 60, the sealing gasket 30 can be squeezed, thereby further improving the sealing between the furnace cover 20 and the furnace body 10. The sealing performance can be improved by preventing the leakage of liquid nitrogen and the uneven temperature inside the furnace body 10, thereby improving the effect of the cold treatment of the product. After the cooling treatment of the product is completed, the furnace cover 20 can be opened to open the furnace body 10 to take out the product. When the furnace cover 20 is opened, the pressure strip 70 at the bottom of the furnace cover 20 will be just stuck in the sealing groove 60, and the entire sealing gasket 30 will be accurately squeezed and fixed, thereby improving the sealing effect of the sealing gasket 30. After the furnace cover 20 is closed and abuts against the furnace body 10, the inner limit frame 40 and the outer limit frame 50 at the top of the furnace body 10 will be stuck in the inner card groove 220 and the outer card groove 210 on the inner side of the furnace cover 20, which can not only make the furnace cover 20 and the furnace body 10 closed tightly, but also can further improve the sealing between the furnace body 10 and the furnace cover 20.

[0030] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A sealing device for a cold treatment furnace, comprising a furnace body (10) and a furnace cover (20) rotatably arranged on the side wall of the furnace body (10), characterized in that: Also includes: A slot assembly, the slot assembly being arranged on the top of the furnace body (10), and a sealing gasket (30) being embedded in the slot assembly; as well as An extrusion piece is provided on the side of the furnace cover (20) opposite to the furnace body, and is used to squeeze and limit the sealing gasket (30) in the slot assembly when the furnace cover (20) and the furnace body (10) are fastened together to prevent the sealing gasket (30) from contacting the cooling medium.

2. A cold treatment furnace sealing device according to claim 1, characterized in that: The slot assembly comprises an inner limit frame (40) arranged on the top of the furnace body (10) and an outer limit frame (50) arranged on the periphery of the inner limit frame, and a sealing groove (60) for placing a sealing gasket (30) is formed between the inner limit frame (40) and the outer limit frame (50).

3. A cold treatment furnace sealing device according to claim 2, characterized in that: The extrusion piece includes a pressure strip (70) arranged on the inner side of the furnace cover (20) and corresponding to the sealing groove (60).

4. A cold treatment furnace sealing device according to claim 3, characterized in that: The dimensions of the pressure strip (70), the sealing groove (60) and the sealing gasket (30) match each other, and all of them are square in shape.

5. The sealing device for a cold treatment furnace according to claim 1, characterized in that: The inner side surface of the furnace cover (20) is further provided with an outer card slot (210) distributed along the periphery of the pressure strip (70) and matched with the outer limit frame (50), and an inner card slot (220) distributed along the inner side of the pressure strip (70) and matched with the inner limit frame (40).

6. The sealing device for a cold treatment furnace according to claim 1, characterized in that: The furnace body (10) and the furnace cover (20) are movably connected via a mounting member.

7. The sealing device for a cold treatment furnace according to claim 6, characterized in that: The mounting member comprises a hinge or a rotating shaft arranged between the furnace body (10) and the furnace cover (20).

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