Furnace door sealing mechanism for hot galvanizing annealing furnace

Abstract

The utility model relates to the technical field of furnace doors, in particular to a furnace door sealing mechanism for a hot galvanizing annealing furnace, which comprises a device body, the device body comprises a door frame, one side of the door frame is hinged with a sealing door plate, and one side of the surface of the sealing door plate is movably connected with a movable plate; a limiting structure is connected to one side of the surface of the door frame and comprises a fixing frame, and a positioning rod is inserted into the fixing frame. The limiting plate is pulled to enable the limiting rod to extrude the supporting spring to contract, then the angle of the movable plate is rotated to enable one side of the movable plate to be inserted into the clamping groove formed in the fixing frame, one end of the limiting rod is inserted into the limiting groove formed in the positioning rod, the positioning rod is limited, and therefore the effect of locking the angle of the movable plate is achieved; the problem that the sealing effect is affected due to the fact that the movable plate is separated from the clamping opening due to angle change and a gap is formed between the door frame and the sealing door plate is solved.

Description

Technical Field

[0001] This utility model relates to the field of furnace door technology, specifically a furnace door sealing mechanism for hot-dip galvanizing annealing furnaces. Background Technology

[0002] Annealing eliminates rolling stress and improves mechanical properties in the annealing furnace. During annealing, the strip is held at high temperature and cooled to the galvanizing temperature, thereby improving its mechanical properties. The heating process in the annealing furnace removes rolling oil and other contaminants from the strip surface through evaporation and combustion, cleaning the strip surface. The annealing furnace door is used to seal the furnace opening.

[0003] When using the existing furnace door sealing mechanism for hot-dip galvanizing annealing furnaces, its function is to seal the furnace opening. The existing furnace door sealing mechanism requires a stable angle restriction of the furnace door to form a seal. When the existing furnace door is closed, it is only limited by the engagement of a movable plate. However, the movable plate is prone to disengagement due to angle changes, resulting in gaps between the furnace door and the door frame, which affects the sealing effect. Utility Model Content

[0004] The purpose of this utility model is to provide a furnace door sealing mechanism for hot-dip galvanizing annealing furnaces, so as to solve the problem mentioned in the background art that the existing furnace door only limits the furnace door by engaging a movable plate when closing, but the movable plate is prone to disengage from the engaging joint due to angle changes, resulting in gaps between the furnace door and the door frame, which affects the sealing effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a furnace door sealing mechanism for a hot-dip galvanizing annealing furnace, comprising:

[0006] The device body includes a door frame, a sealing door panel is hinged to one side of the door frame, and a movable plate is movably connected to one side of the surface of the sealing door panel;

[0007] A limiting structure is connected to one side of the door frame surface. The limiting structure includes a fixing frame, a positioning rod is inserted inside the fixing frame, a limiting rod is inserted inside one side of the positioning rod, a support spring is connected to one end of the limiting rod, a support frame is connected to one side of the limiting rod, and a limiting plate is connected to one end of the support frame.

[0008] Preferably, a slot is provided on one side of the fixed frame, and one side of the movable plate is inserted into the slot of the fixed frame. An arc-shaped groove is provided on one side of the inner wall of the slot of the fixed frame, and one end of the positioning rod is inserted into the arc-shaped groove of the fixed frame.

[0009] Preferably, a limiting hole is provided on one side of the positioning rod, and one end of the limiting rod is inserted into the limiting hole provided in the positioning rod. The support frame is connected to one side of the surface of the fixed frame.

[0010] Preferably, a movable groove is provided on one side of the support frame, and one end of the support spring is connected to one side of the inner wall of the movable groove of the support frame. The limiting rod and the limiting plate can slide inside the movable groove of the support frame.

[0011] Preferably, an assembly structure is connected to one side of the movable plate. The assembly structure includes a positioning plate, a handle is sleeved on the outer wall of the positioning plate, a limiting screw is inserted inside one side of the handle, and a nut is rotatably connected to the outer surface of one end of the limiting screw.

[0012] Preferably, a groove is formed on one end of the grip, one end of the positioning plate is inserted into the groove of the grip, a positioning groove is formed on one side of the inner wall of the groove of the grip, and the limiting screw is inserted into the positioning groove of the grip.

[0013] Preferably, one end of the limiting screw is connected to one side of the positioning plate surface, and the limiting screw and the nut are rotatably connected by a thread.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By pulling the limiting plate, the limiting rod is compressed by the support spring and retracted. Then, the angle of the movable plate is rotated so that one side is inserted into the slot opened in the fixed frame, and the positioning rod is simultaneously inserted into the arc-shaped groove opened in the fixed frame. Then, the limiting plate is released, and the support spring supports one end of the limiting rod to return to its original position, thereby inserting one end of the limiting rod into the limiting groove opened in the positioning rod, limiting the positioning rod and thus achieving the effect of locking the angle of the movable plate. This prevents the movable plate from disengaging from the locking joint due to angle changes, which would cause gaps between the door frame and the sealing door panel and affect the sealing effect.

[0016] 2. By attaching the handle to the outer surface of the positioning plate and inserting the limiting screw into the positioning groove of the handle, the movable plate and the handle are positioned. Then, the nut is rotated and connected to the outer surface of one end of the limiting screw to limit the screw, thereby achieving a quick assembly effect between the movable plate and the handle. The handle is used to control the angle adjustment of the movable plate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0018] Figure 2 This is a three-dimensional sectional view of the structure of this utility model.

[0019] Figure 3 This is a top view and partial cross-sectional perspective view of the structure of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged 3D structural diagram at point A;

[0021] Figure 5 This is a top view and partial cross-sectional plan view of the structure of this utility model.

[0022] In the diagram: 1. Device body; 11. Door frame; 12. Sealing door panel; 13. Movable plate; 2. Limiting structure; 21. Fixing frame; 22. Positioning rod; 23. Limiting rod; 24. Support spring; 25. Support frame; 26. Limiting plate; 3. Assembly structure; 31. Positioning plate; 32. Handle; 33. Limiting screw; 34. Nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 One embodiment provided by this utility model:

[0025] A furnace door sealing mechanism for a hot-dip galvanizing annealing furnace includes:

[0026] The device body 1 includes a door frame 11. A sealing door panel 12 is hinged to one side of the door frame 11. A movable plate 13 is movably connected to one side of the surface of the sealing door panel 12. The internal material of the sealing door panel 12 is existing technology and can be purchased on the market. It is not considered as a technical protection point of this application, so no further details are made.

[0027] A limiting structure 2 is connected to one side of the surface of the door frame 11. The limiting structure 2 includes a fixing frame 21. A positioning rod 22 is inserted inside the fixing frame 21. A limiting rod 23 is inserted inside one side of the positioning rod 22. A support spring 24 is connected to one end of the limiting rod 23. A support frame 25 is connected to one side of the limiting rod 23. A limiting plate 26 is connected to one end of the support frame 25.

[0028] Furthermore, a slot is provided on one side of the fixed frame 21, and the movable plate 13 is inserted into the slot of the fixed frame 21. An arc-shaped groove is provided on one side of the inner wall of the slot of the fixed frame 21, and one end of the positioning rod 22 is inserted into the arc-shaped groove of the fixed frame 21. This allows the positioning rod 22 to be moved and limited by the arc-shaped groove of the fixed frame 21, thereby limiting the movable angle of the movable plate 13.

[0029] Furthermore, a limiting hole is provided on one side of the positioning rod 22, and one end of the limiting rod 23 is inserted into the limiting hole provided in the positioning rod 22. The support frame 25 is connected to one side of the surface of the fixed frame 21, so that the fixed frame 21 limits the support frame 25 and uses the support frame 25 to support the support spring 24.

[0030] Furthermore, a movable groove is provided on one side of the support frame 25, and one end of the support spring 24 is connected to one side of the inner wall of the movable groove provided in the support frame 25. The limiting rod 23 and the limiting plate 26 can slide inside the movable groove provided in the support frame 25, so as to realize the movement and limiting of the limiting rod 23 and the limiting plate 26 through the movable groove provided in the support frame 25.

[0031] Furthermore, an assembly structure 3 is connected to one side of the movable plate 13. The assembly structure 3 includes a positioning plate 31. A handle 32 is sleeved on the outer wall of the positioning plate 31. A limiting screw 33 is inserted inside one side of the handle 32. A nut 34 is rotatably connected to the outer surface of one end of the limiting screw 33, so as to achieve a quick assembly effect between the movable plate 13 and the handle 32. The handle 32 is used to control the angle adjustment of the movable plate 13.

[0032] Furthermore, a groove is provided on one end of the grip 32, and one end of the positioning plate 31 is inserted into the groove of the grip 32. A positioning groove is provided on one side of the inner wall of the groove of the grip 32, and the limiting screw 33 is inserted into the positioning groove of the grip 32. This allows the limiting screw 33 to be positioned by the positioning groove of the grip 32, and the angle of the grip 32 to be limited.

[0033] Furthermore, one end of the limiting screw 33 is connected to one side of the surface of the positioning plate 31, and the limiting screw 33 and the nut 34 are rotated together by threads, so as to lock the limiting screw 33 by connecting and fixing the limiting screw 33 and the nut 34 through the threads.

[0034] Working principle: When limiting the furnace door sealing mechanism of the hot-dip galvanizing annealing furnace, the limiting plate 26 is pulled to compress the supporting spring 24 and retract it. Then, the angle of the movable plate 13 is rotated so that one side is inserted into the slot opened in the fixed frame 21, and the positioning rod 22 is simultaneously inserted into the arc-shaped groove opened in the fixed frame 21. Then, the limiting plate 26 is released, so that the supporting spring 24 supports one end of the limiting rod 23 to return to its original position, thereby inserting one end of the limiting rod 23 into the limiting groove opened in the positioning rod 22, limiting the positioning rod 22, thereby achieving the effect of locking the angle of the movable plate 13.

[0035] When assembling the furnace door sealing mechanism for hot-dip galvanizing annealing furnace, the handle 32 is sleeved on the outer surface of the positioning plate 31, and the limiting screw 33 is inserted into the positioning groove opened in the handle 32 to position the movable plate 13 and the handle 32. Then, the nut 34 is rotated and connected to the outer surface of one end of the limiting screw 33 to limit the limiting screw 33, thereby achieving a quick assembly effect between the movable plate 13 and the handle 32. The handle 32 is used to control the angle adjustment of the movable plate 13.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A furnace door sealing mechanism for a hot-dip galvanizing annealing furnace, characterized in that, include: The device body (1) includes a door frame (11), a sealing door panel (12) is hinged to one side of the door frame (11), and a movable plate (13) is movably connected to one side of the surface of the sealing door panel (12). A limiting structure (2) is connected to one side of the surface of the door frame (11). The limiting structure (2) includes a fixing frame (21). A positioning rod (22) is inserted inside the fixing frame (21). A limiting rod (23) is inserted inside one side of the positioning rod (22). A support spring (24) is connected to one end of the limiting rod (23). A support frame (25) is connected to one side of the limiting rod (23). A limiting plate (26) is connected to one end of the support frame (25).

2. The furnace door sealing mechanism for a hot-dip galvanizing annealing furnace according to claim 1, characterized in that: The fixed frame (21) has a slot on one side, and the movable plate (13) is inserted into the slot of the fixed frame (21) on one side. The inner wall of the slot of the fixed frame (21) has an arc-shaped groove on one side, and one end of the positioning rod (22) is inserted into the arc-shaped groove of the fixed frame (21).

3. The furnace door sealing mechanism for a hot-dip galvanizing annealing furnace according to claim 1, characterized in that: The positioning rod (22) has a limiting hole on one side, and one end of the limiting rod (23) is inserted into the limiting hole of the positioning rod (22). The support frame (25) is connected to one side of the surface of the fixing frame (21).

4. The furnace door sealing mechanism for a hot-dip galvanizing annealing furnace according to claim 1, characterized in that: The support frame (25) has a movable groove on one side, and one end of the support spring (24) is connected to one side of the inner wall of the movable groove of the support frame (25). The limiting rod (23) and the limiting plate (26) can slide inside the movable groove of the support frame (25).

5. The furnace door sealing mechanism for a hot-dip galvanizing annealing furnace according to claim 1, characterized in that: The movable plate (13) is connected to an assembly structure (3) on one side. The assembly structure (3) includes a positioning plate (31). A handle (32) is sleeved on the outer wall of the positioning plate (31). A limiting screw (33) is inserted inside one side of the handle (32). A nut (34) is rotatably connected to the outer surface of one end of the limiting screw (33).

6. The furnace door sealing mechanism for a hot-dip galvanizing annealing furnace according to claim 5, characterized in that: The grip (32) has a groove on one end surface, and the positioning plate (31) is inserted into the groove of the grip (32) at one end. The inner wall of the groove of the grip (32) has a positioning groove on one side, and the limiting screw (33) is inserted into the positioning groove of the grip (32).

7. The furnace door sealing mechanism for a hot-dip galvanizing annealing furnace according to claim 5, characterized in that: One end of the limiting screw (33) is connected to one side of the surface of the positioning plate (31), and the limiting screw (33) and the nut (34) are rotatably connected by threads.

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