Sealing structure of metal heat treatment vacuum furnace

Abstract

The utility model relates to the technical field of vacuum furnaces, and discloses a metal heat treatment vacuum furnace sealing structure which comprises a furnace body and a furnace cover, the furnace cover is closed at the open end of the furnace body, an L-shaped fixing plate is fixedly installed on one side of the outer wall of the open end of the furnace body, and a through hole is formed in the end, away from the furnace body, of the fixing plate. A rotating rod rotationally inserted into a through hole in one end of the fixing plate is fixedly mounted on one side of the furnace cover, a connecting groove is formed in the side wall of the open end of the furnace body, a storage groove is formed in the side face, in butt joint with the furnace body, of the furnace cover, a first sealing plate is arranged in the storage groove, and a second sealing plate is fixedly mounted on the side face of the first sealing plate. The first sealing plate can move into the connecting groove in the open end of the furnace body, and the second sealing plate on the side face of the first sealing plate moves into the opening of the furnace body. Therefore, the vacuum furnace can be kept in a sealed state all the time in the heat treatment process of metal.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum furnaces, in particular to a sealing structure of a metal heat treatment vacuum furnace. Background Art

[0002] A vacuum furnace is a furnace that uses a vacuum system (composed of a vacuum pump, a vacuum measuring device, a vacuum valve and other components that have been carefully assembled) to discharge some of the substances in the furnace cavity, so that the pressure in the furnace cavity is less than a standard atmospheric pressure, and the space in the furnace cavity is thus in a vacuum state. This is a vacuum furnace. Since its processing needs to maintain a vacuum state, the sealing effect of the furnace body and the furnace cover is particularly important. However, the furnace cover closing method of a common vacuum furnace is relatively simple. The furnace cover and the furnace body are fixed after closing, and there is no other structure to improve the sealing performance, which results in the sealing effect of the furnace cover and the furnace body being not stable enough. For this reason, the present application proposes a sealing structure for a metal heat treatment vacuum furnace. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a sealing structure of a metal heat treatment vacuum furnace, including a furnace body and a furnace cover, the furnace cover is closed at the open end of the furnace body, an L-shaped fixing plate is fixedly installed on one side of the outer wall of the open end of the furnace body, a through hole is provided at the end of the fixing plate away from the furnace body, a rotating rod is fixedly installed on one side of the furnace cover and rotatably inserted into the through hole at one end of the fixing plate, a connecting groove is provided on the side wall of the open end of the furnace body, a storage groove is provided on the side where the furnace cover connects to the furnace body, a first sealing plate is arranged in the storage groove, a second sealing plate is fixedly installed on the side of the first sealing plate, the first sealing plate can be moved into the connecting groove at the open end of the furnace body, and the second sealing plate on the side of the first sealing plate is moved into the opening of the furnace body.

[0004] Furthermore, a sealing ring is fixedly installed at the inner end of the connecting groove, and a sealing groove is opened on the side of the first sealing plate. When the first sealing plate is located in the connecting groove, the sealing ring is located in the sealing groove on the side of the first sealing plate.

[0005] Furthermore, the diameter of the first sealing plate is the same as the diameter of the connecting groove, and the diameter of the second sealing plate is the same as the diameter of the inner wall of the furnace body.

[0006] Furthermore, a hydraulic rod is fixedly installed at the center of the side of the furnace cover, and the telescopic end of the hydraulic rod passes through the furnace cover, extends into the storage groove and is fixedly connected to the center of the side of the first sealing plate.

[0007] Furthermore, a fixing block is fixedly installed on the other side of the outer wall of the opening end of the furnace body, a slot is opened on one side of the fixing block, and an L-shaped screw is fixedly connected to the other side of the furnace cover. When the furnace cover is closed at the opening end of the furnace body, the vertical part of the screw is inserted into the slot on the side of the fixing block, and a nut is threadedly sleeved on the vertical part of the screw and rests on the fixing block.

[0008] Furthermore, the sum of the thicknesses of the first sealing plate and the second sealing plate is the same as the depth of the storage groove.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] When the furnace cover and the furnace body are closed, the hydraulic rod pushes the first sealing plate and the second sealing plate to block in the connecting groove at the opening end of the furnace body, thereby greatly improving the sealing effect of the furnace cover after the opening end of the furnace body is closed, and thus the vacuum furnace can always remain sealed during the heat treatment of the metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model from top view;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model when viewed from above;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model with the furnace cover opened;

[0015] Figure 4 It is a structural schematic diagram of the furnace body of the utility model;

[0016] Figure 5 It is a schematic diagram of the cross-sectional structure of the first sealing plate and the second sealing plate of the utility model;

[0017] In the figure: 1. furnace body; 2. furnace cover; 3. fixed plate; 4. rotating rod; 5. fixed block; 6. notch; 7. screw; 8. nut; 9. storage groove; 10. first sealing plate; 11. second sealing plate; 12. hydraulic rod; 13. connecting groove; 14. sealing ring; 15. sealing groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Depend on Figure 1-5The utility model includes a furnace body 1 and a furnace cover 2, the furnace cover 2 is closed at the open end of the furnace body 1, an L-shaped fixing plate 3 is fixedly installed on one side of the outer wall of the open end of the furnace body 1, a through hole is opened at the end of the fixing plate 3 away from the furnace body 1, a rotating rod 4 is fixedly installed on one side of the furnace cover 2 and rotatably inserted into the through hole at one end of the fixing plate 3, a connecting groove 13 is opened on the side wall of the open end of the furnace body 1, a storage groove 9 is opened on the side of the furnace cover 2 docking with the furnace body 1, a first sealing plate 10 is arranged in the storage groove 9, a second sealing plate 11 is fixedly installed on the side of the first sealing plate 10, the first sealing plate 10 can be moved into the connecting groove 13 at the open end of the furnace body 1, and the second sealing plate 11 on the side of the first sealing plate 10 is moved into the opening of the furnace body 1.

[0020] At the same time, a sealing ring 14 is fixedly installed at the inner end of the connecting groove 13, and a sealing groove 15 is opened on the side of the first sealing plate 10. When the first sealing plate 10 is located in the connecting groove 13, the sealing ring 14 is located in the sealing groove 15 on the side of the first sealing plate 10. By the engagement of the sealing ring 14 with the sealing groove 15 on the side of the first sealing plate 10, the sealing performance of the first sealing plate 10 after being fitted with the connecting groove 13 can be increased.

[0021] In addition, the diameter of the first sealing plate 10 is the same as the diameter of the connecting groove 13 , and the diameter of the second sealing plate 11 is the same as the diameter of the inner wall of the furnace body 1 , so that the first sealing plate 10 and the second sealing plate 11 can tightly block the opening of the furnace body 1 .

[0022] In addition, a hydraulic rod 12 is fixedly installed at the center of the side of the furnace cover 2. The telescopic end of the hydraulic rod 12 passes through the furnace cover 2 and extends into the storage groove 9 and is fixedly connected to the center of the side of the first sealing plate 10. By controlling the hydraulic rod 12, the first sealing plate 10 and the second sealing plate 11 can be pushed out of the storage groove 9, so that the first sealing plate 10 is against the connecting groove 13 at the open end of the furnace body 1, and the second sealing plate 11 is blocked at the opening of the furnace body 1, thereby further enhancing the sealing effect of the open end of the furnace body 1.

[0023] In addition, a fixing block 5 is fixedly installed on the other side of the outer wall of the open end of the furnace body 1, and a slot 6 is opened on one side of the fixing block 5. An L-shaped screw 7 is fixedly connected to the other side of the furnace cover 2. When the furnace cover 2 is closed at the open end of the furnace body 1, the vertical part of the screw 7 is inserted into the slot 6 on the side of the fixing block 5, and a nut 8 is threadedly sleeved on the vertical part of the screw 7, which is against the fixing block 5. By inserting the vertical end of the screw 7 into the slot 6 on the side of the fixing block 5 and using the nut 8 to be sleeved on the screw 7, the nut 8 can be pressed against one side of the fixing block 5, so that the position of the screw 7 can be fixed in the slot 6 on the side of the fixing block 5, so that the furnace cover 2 is closed at the opening of the furnace body 1.

[0024] In addition, the sum of the thicknesses of the first sealing plate 10 and the second sealing plate 11 is the same as the depth of the storage groove 9, so that the first sealing plate 10 and the second sealing plate 11 can be completely moved into the storage groove 9 on the side of the furnace cover 2.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal heat treatment vacuum furnace sealing structure, comprising a furnace body (1) and a furnace cover (2), characterized in that: The furnace cover (2) is closed at the open end of the furnace body (1); an L-shaped fixing plate (3) is fixedly installed on one side of the outer wall of the open end of the furnace body (1); a through hole is provided at one end of the fixing plate (3) away from the furnace body (1); a rotating rod (4) is fixedly installed on one side of the furnace cover (2) and is rotatably inserted into the through hole at one end of the fixing plate (3); a connecting groove (13) is provided on the side wall of the open end of the furnace body (1); a storage groove (9) is provided on the side of the furnace cover (2) that is connected to the furnace body (1); a first sealing plate (10) is provided in the storage groove (9); a second sealing plate (11) is fixedly installed on the side of the first sealing plate (10); the first sealing plate (10) can be moved into the connecting groove (13) at the open end of the furnace body (1), and the second sealing plate (11) on the side of the first sealing plate (10) is moved into the opening of the furnace body (1).

2. A metal heat treatment vacuum furnace sealing structure according to claim 1, characterized in that: A sealing ring (14) is fixedly mounted on the inner end of the connecting groove (13), and a sealing groove (15) is provided on the side of the first sealing plate (10). When the first sealing plate (10) is located in the connecting groove (13), the sealing ring (14) is located in the sealing groove (15) on the side of the first sealing plate (10).

3. The metal heat treatment vacuum furnace sealing structure according to claim 1, characterized in that: The diameter of the first sealing plate (10) is the same as the diameter of the connecting groove (13), and the diameter of the second sealing plate (11) is the same as the diameter of the inner wall of the furnace body (1).

4. The metal heat treatment vacuum furnace sealing structure according to claim 1, characterized in that: A hydraulic rod (12) is fixedly mounted at the center of the side of the furnace cover (2), and the telescopic end of the hydraulic rod (12) passes through the furnace cover (2) and extends into the storage groove (9) and is fixedly connected to the center of the side of the first sealing plate (10).

5. The metal heat treatment vacuum furnace sealing structure according to claim 1, characterized in that: A fixing block (5) is fixedly mounted on the other side of the outer wall of the open end of the furnace body (1), a notch (6) is provided on one side of the fixing block (5), and an L-shaped screw (7) is fixedly connected to the other side of the furnace cover (2); when the furnace cover (2) is closed on the open end of the furnace body (1), the vertical portion of the screw (7) is inserted into the notch (6) on the side of the fixing block (5), and a nut (8) is threadedly sleeved on the vertical portion of the screw (7) and abuts against the fixing block (5).

6. The metal heat treatment vacuum furnace sealing structure according to claim 1, characterized in that: The sum of the thicknesses of the first sealing plate (10) and the second sealing plate (11) is the same as the depth of the storage groove (9).

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