Sealing door body for annealing furnace

Abstract

The utility model relates to the technical field of annealing furnaces, in particular to a sealing door body for an annealing furnace, which is arranged at a feed port of a furnace body and comprises a sealing door with an axial lead coinciding with the axial lead of the furnace body, and the sealing door is movably connected with the furnace body so as to be used for opening and closing the feed port; and the locking ring is rotationally arranged on the surface of the furnace body and at the feeding hole. Due to the fact that the locking ring fixing mode is adopted, compared with a traditional screw fixing mode, the locking ring fixing mode is firmer and safer, the width of the locking ring is large, the locking ring applies pressure, the locking ring is the annular ring, the mode similar to a spinning buckle is formed, the sealing door can still be stably connected when the interior of the furnace body bears larger pressure intensity, and when the locking ring is driven to rotate, the locking ring is not prone to falling off. When the first lock catch piece of the lock ring is separated from the second lock catch piece on the sealing door, the sealing door can be opened, when the first lock catch piece and the second lock catch piece are attached to each other, door locking is completed, and the door opening and closing efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of annealing furnace technology, and in particular to a sealing door for an annealing furnace. Background Technology

[0002] The sealing door of the annealing furnace is installed at the feed inlet of the furnace body. After the workpiece is placed into the furnace body, the sealing door can be closed to seal the furnace chamber, prevent outside air from entering and gas from leaking out of the furnace, maintain a stable atmosphere inside the furnace, and ensure the quality of annealing. Currently, the sealing door of the traditional bell-type annealing furnace is installed as follows: first, the sealing door is placed on the feed inlet of the furnace body. Both the sealing door and the furnace body have a ring of screw holes for installing bolts. The screws are installed in the screw holes one by one by manual or electric tightening, thereby connecting the sealing door to the furnace body.

[0003] The above solution has the following drawbacks: the contact area between the screws and the sealing door and furnace body is small, which cannot provide sufficient fastening force. When the internal pressure of the furnace body changes significantly, the screws will loosen, causing the sealing door to separate from the furnace body. In order to maintain the connection strength of the sealing door, the number of screws can only be increased. When there are many screws, it takes a lot of time to install and disassemble, which is not conducive to quick disassembly. It is necessary to design a new sealing door structure. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a sealing door for an annealing furnace to solve the technical problems of poor connection strength and low loading and unloading efficiency of the sealing door of the existing annealing furnace.

[0005] To achieve the above objectives, this utility model provides a sealing door for an annealing furnace, disposed at the feed inlet of the furnace body, comprising:

[0006] A sealing door whose axis coincides with the axis of the furnace body, the sealing door being movably connected to the furnace body for opening and closing the feed inlet;

[0007] Rotate the locking ring located on the surface of the furnace body and at the feed inlet, one end of the locking ring is provided with at least one first locking element;

[0008] At least one second locking element is provided at one end of the sealing door near the locking ring, so that when the sealing door is closed on the feed inlet, the first locking element and the second locking element are offset from each other and separated in the direction of the furnace body axis. By rotating the locking ring, the first locking element can be rotated relative to the second locking element along the furnace body axis, so that the separation between the first locking element and the second locking element changes to a close fit, thereby fixing the sealing door and the furnace body in a fixed connection on their respective axes.

[0009] As a preferred technical solution of this utility model, the first locking element is a first protruding tooth provided on the inner circumferential surface of one end of the locking ring, and the second locking element is a second protruding tooth provided on the outer circumferential surface of one end of the sealing door. By rotating the locking ring, it can drive the first protruding tooth to rotate around the axis of the furnace body, so that the first protruding tooth and the second protruding tooth are either in contact with each other or separated from each other.

[0010] As a preferred embodiment of the present invention, the first protruding teeth are arranged in a ring-shaped interval on the inner circumference of the lock ring about the axis of the lock ring, and a first gap is formed between adjacent first protruding teeth so that the second protruding teeth can pass through. The second protruding teeth are arranged in a ring-shaped interval on the outer circumference of the sealing door about the axis of the sealing door, and a second gap is formed between adjacent second protruding teeth so that the first protruding teeth can pass through.

[0011] As a preferred embodiment of this utility model, the locking ring protrudes a certain distance from the feed inlet at the end where the first locking element is provided.

[0012] As a preferred embodiment of this utility model, the locking ring is provided with a slider on its inner side, and the slider is rotatably engaged with a groove formed on the outer circumferential surface of the furnace body.

[0013] As a preferred embodiment of this utility model, the sealing door further includes:

[0014] A mounting ring fixedly disposed on the outer circumferential surface of the furnace body;

[0015] A first hinge seat, one end of which is fixedly connected to the mounting ring;

[0016] A second hinge seat is fixedly connected at one end to the sealed door, and a pivot is provided between the other ends of the first hinge seat and the second hinge seat.

[0017] As a preferred embodiment of this utility model, the second hinge seat is further provided with a reinforcing member.

[0018] As a preferred embodiment of this utility model, the sealing door further includes:

[0019] A connecting rod whose end is fixedly connected to the top end of the rotating shaft;

[0020] A hanger whose one end is fixedly connected to the other end of the connecting rod;

[0021] A hook, one end of which is connected to the other end of the hanger;

[0022] A lifting ring is fixedly connected at one end to the sealing door, and the lifting ring is connected to a hook.

[0023] As a preferred embodiment of this invention, the sealing door further includes a driving component for driving the locking ring to rotate along the axis of the furnace body.

[0024] As a preferred embodiment of this utility model, the driving component includes a hydraulic cylinder, the base of which is connected to the furnace body, and the output end of which is connected to a locking ring.

[0025] The beneficial effects of this utility model are as follows: Due to the use of a locking ring fixing method, this utility model is more robust and secure than the traditional screw fixing method. The locking ring is wide and applies pressure, and the locking ring is a ring-shaped ring, forming a style similar to a swivel. This allows the sealing door to remain stable even when the furnace body is subjected to greater pressure. When the locking ring is driven to rotate, the first locking element of the locking ring separates from the second locking element on the sealing door, allowing the sealing door to open. When the first locking element and the second locking element are engaged, the door is locked, resulting in high efficiency in opening and closing the door. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a front view structural diagram of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 3 This is a side view of the structure of this utility model;

[0030] Figure 4 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 5 This is a three-dimensional structural diagram of the locking ring, the first protruding tooth, the first hinge seat, and the hydraulic cylinder of this utility model.

[0032] The components in the diagram are labeled as follows: 1. Furnace body; 2. Feed inlet; 3. Mounting ring; 4. First hinge seat; 5. Rotating shaft; 6. Sealing door; 7. Connecting rod; 8. Hanger; 9. Hook; 10. Lifting ring; 11. Locking ring; 12. Sliding block; 13. Slide groove; 14. First tooth; 15. First gap; 16. Second tooth; 17. Second gap; 18. Hydraulic cylinder; 19. Second hinge seat; 20. Reinforcing member. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a sealing door for an annealing furnace is installed at the feed inlet 2 of the furnace body 1, comprising: a sealing door 6 whose axis coincides with the axis of the furnace body 1, the sealing door 6 being movably connected to the furnace body 1 for opening and closing the feed inlet 2; a locking ring 11 rotatably disposed on the surface of the furnace body 1 at the feed inlet 2, one end of the locking ring 11 being provided with at least one first locking element; and at least one second locking element disposed on the sealing door 6 near the locking ring 11, such that when the sealing door 6 is closed on the feed inlet 2, the first locking element and the second locking element are offset from each other and separated in the direction of the axis of the furnace body 1, and by rotating the locking ring 11, it can drive the first locking element to rotate relative to the second locking element along the axis of the furnace body 1, causing the first locking element and the second locking element to change from separation to contact, thereby fixing the sealing door 6 and the furnace body 1 in a fixed connection on their respective axes;

[0036] The above technical solution can improve the connection strength between the sealing door 6 and the furnace body 1. In use, the sealing door 6 is moved to cover the feed inlet 2 of the furnace body 1. The sealing door 6 is partially embedded in the locking ring 11, so that the second locking member of the sealing door 6 and the first locking member of the locking ring 11 are offset in the direction of the axis of the furnace body 1, and the second locking member and the first locking member are in a separated state. By rotating the locking ring 11, it can drive the first locking member to rotate relative to the second locking member along the axis of the furnace body 1, so that the separation between the first locking member and the second locking member can be changed to a fit. It can be a partial fit or a complete fit. Thus, through the mutual abutment of the first locking member and the second locking member, the sealing door 6 and the furnace body 1 are fixedly connected on their axis. When it is necessary to open the sealing door 6, rotating the locking ring 11 can drive the first locking member to rotate and reset along the axis of the furnace body 1, so that the first locking member and the second locking member are separated, and the sealing door 6 can move around the furnace body 1 to open the feed inlet 2.

[0037] In summary, this utility model, due to the use of a locking ring 11 for fixing, is much stronger and safer than the traditional screw fixing. The locking ring 11 is wide and applies pressure, and its ring shape forms a loop similar to a swivel, ensuring that the sealing door 6 remains stable even when the furnace body 1 is subjected to greater pressure. When the locking ring 11 is rotated, the first locking element of the locking ring 11 separates from the second locking element on the sealing door 6, allowing the sealing door 6 to open. When the first and second locking elements engage, the door is locked, resulting in high efficiency in opening and closing the door.

[0038] like Figure 4 As shown, in this embodiment, the first locking element is a first protruding tooth 14 disposed on the inner circumferential surface of one end of the locking ring 11, and the second locking element is a second protruding tooth 16 disposed on the outer circumferential surface of one end of the sealing door 6. By rotating the locking ring 11, it can drive the first protruding tooth 14 to rotate around the axis of the furnace body 1, so that the first protruding tooth 14 and the second protruding tooth 16 are either in contact with each other or separated from each other.

[0039] The above technical solution enables the connection between the locking ring 11 and the sealing door 6 through the protruding teeth. In use, rotating the locking ring 11 can drive the first protruding tooth 14 on its inner circumference to rotate. The first protruding tooth 14 rotates relative to the second protruding tooth 16 on the outer circumference of the sealing door 6. When the first protruding tooth 14 and the second protruding tooth 16 are in contact with each other, that is, when the first protruding tooth 14 and the second protruding tooth 16 are aligned with each other, the locking ring 11 and the sealing door 6 can be axially locked, making them unable to separate and the sealing door 6 cannot be opened. Conversely, when the first protruding tooth 14 and the second protruding tooth 16 are separated, that is, when the first protruding tooth 14 and the second protruding tooth 16 are completely disengaged, the axial lock between the locking ring 11 and the sealing door 6 can be released, and the sealing door 6 can be opened normally.

[0040] like Figure 4 As shown, in this embodiment, the first protrusion 14 has a plurality of teeth arranged in a ring-shaped interval about the axis of the locking ring 11 on the inner circumference of the locking ring 11. A first gap 15 is formed between adjacent first protrusions 14, through which second protrusions 16 can pass. The second protrusions 16 have a plurality of teeth arranged in a ring-shaped interval about the axis of the sealing door 6 on the outer circumference of the sealing door 6. A second gap 17 is formed between adjacent second protrusions 16, through which first protrusions 14 can pass. The locking ring 11 protrudes a certain distance from the feed inlet 2 at the end where the first locking element is provided.

[0041] The above technical solution can improve the connection strength between the locking ring 11 and the sealing door 6 by increasing the number of protruding teeth. Increasing the number of protruding teeth can make the contact area between the locking ring 11 and the sealing door 6 larger, and the force is more uniform, preventing uneven force from causing local deformation and damage. When the first protruding tooth 14 and the second protruding tooth 16 are completely disengaged, the first protruding tooth 14 is facing the second gap 17, and the second protruding tooth 16 is facing the first gap 15. The protruding teeth can pass through the gap. Generally, the gap should be set larger than the protruding teeth to avoid motion interference when opening and closing the sealing door 6.

[0042] like Figure 5 As shown, in this embodiment, the locking ring 11 is provided with a slider 12 on its inner side, and the slider 12 is rotatably engaged with the groove 13 opened on the outer circumferential surface of the furnace body 1.

[0043] The above technical solution allows the locking ring 11 to be rotatably mounted on the furnace body 1.

[0044] like Figure 2 and Figure 4 As shown, in this embodiment, the sealing door further includes: a mounting ring 3 fixedly disposed on the outer circumferential surface of the furnace body 1; a first hinge seat 4 fixedly connected to the mounting ring 3 at one end; a second hinge seat 19 fixedly connected to the sealing door 6 at one end; a rotating shaft 5 is provided between the other ends of the first hinge seat 4 and the second hinge seat 19; and a reinforcing member 20 is also provided on the second hinge seat 19.

[0045] The above technical solution allows the sealing door 6 to be mounted on the furnace body 1 via a movable hinge, and the opening and closing of the feed inlet 2 of the furnace body 1 can be controlled by rotating the sealing door 6.

[0046] like Figure 2 and Figure 4 As shown, in this embodiment, the sealing door further includes: a connecting rod 7 with one end fixedly connected to the top end of the rotating shaft 5; a hanger 8 with one end fixedly connected to the other end of the connecting rod 7; a hook 9 with one end connected to the other end of the hanger 8; and a lifting ring 10 with one end fixedly connected to the sealing door 6, the lifting ring 10 being connected to the hook 9.

[0047] The above technical solution can prevent the sealing door 6 from falling due to excessive weight. In use, a lifting structure can be formed by setting up a connecting rod 7, a hanger 8 and a hook 9. After the hook 9 of the lifting structure is connected to the lifting ring 10 on the sealing door 6, the lifting structure can provide a pulling force to the sealing door 6 to balance the weight of the sealing door 6. In addition, the lifting structure can rotate normally with the sealing door 6 during use without affecting the normal opening and closing of the sealing door 6.

[0048] like Figure 2 and Figure 4 As shown, in this embodiment, the sealing door also includes a driving component for driving the locking ring 11 to rotate along the axis of the furnace body 1; the driving component includes a hydraulic cylinder 18, the base of the hydraulic cylinder 18 is connected to the furnace body 1, and the output end of the hydraulic cylinder 18 is connected to the locking ring 11.

[0049] The above technical solution can automatically control the rotation of the locking ring 11. When in use, the output shaft of the hydraulic cylinder 18 is started to drive the locking ring 11 to rotate relative to the furnace body 1, thereby enabling the locking ring 11 to unlock or lock the sealing door 6.

[0050] Working principle: During use, the sealing door 6 is rotated around the rotating shaft 5, covering the feed inlet 2 of the furnace body 1. The sealing door 6 is partially embedded in the locking ring 11, causing the second protrusion 16 on the sealing door 6 to pass through the first gap 15. The second protrusion 16 and the first protrusion 14 are offset along the axis of the furnace body 1, and the first protrusion 14 and the second protrusion 16 are in a separated state, that is, they are not in contact. The hydraulic cylinder 18 is activated, causing its output shaft to drive the locking ring 11 to rotate relative to the furnace body 1. The locking ring 11 drives the first protrusion 14 to rotate relative to the second protrusion 16 along the axis of the furnace body 1, causing the first protrusion 14 to rotate. The separation between the first tooth 14 and the second tooth 16 is transformed into a fit. The two can be partially or completely fitted. When fully fitted, the connection strength is more stable. Thus, through the mutual abutment of the first tooth 14 and the second tooth 16, the sealing door 6 and the furnace body 1 are fixedly connected on their axis. When it is necessary to open the sealing door 6, the hydraulic cylinder 18 is operated to rotate the locking ring 11. The locking ring 11 drives the first tooth 14 to rotate and reset along the axis of the furnace body 1, so that the first tooth 14 and the second tooth 16 are separated, thereby releasing the locking ring 11 from locking the sealing door 6, allowing the sealing door 6 to rotate around the furnace body 1 to open the feed port 2.

[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0052] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing door body for an annealing furnace, provided at a feed inlet (2) of a furnace body (1), characterized in that, include: A sealing door (6) whose axis coincides with the axis of the furnace body (1), the sealing door (6) being movably connected to the furnace body (1) for opening and closing the feed inlet (2); Rotate the locking ring (11) located on the surface of the furnace body (1) and at the feed inlet (2), one end of the locking ring (11) is provided with at least one first locking element; At least one second locking element is provided at one end of the sealing door (6) near the locking ring (11) so that when the sealing door (6) is closed on the feed inlet (2), the first locking element and the second locking element are offset from each other and separated in the direction of the axis of the furnace body (1). By rotating the locking ring (11), it can drive the first locking element to rotate relative to the second locking element along the axis of the furnace body (1), so that the separation between the first locking element and the second locking element changes to being in contact, thereby fixing the sealing door (6) and the furnace body (1) on their axis.

2. The sealing door body for an annealing furnace according to claim 1, characterized by The first locking element is a first protruding tooth (14) on the inner circumferential surface of one end of the locking ring (11), and the second locking element is a second protruding tooth (16) on the outer circumferential surface of one end of the sealing door (6). By rotating the locking ring (11), it can drive the first protruding tooth (14) to rotate around the axis of the furnace body (1), so that the first protruding tooth (14) and the second protruding tooth (16) are either in contact with each other or separated from each other.

3. The sealing door body for an annealing furnace according to claim 2, characterized by The first protrusion (14) has a plurality of teeth and is arranged in annular intervals about the axis of the locking ring (11) on the inner circumference of the locking ring (11). A first gap (15) is formed between adjacent first protrusions (14) for the second protrusion (16) to pass through. The second protrusion (16) has a plurality of teeth and is arranged in annular intervals about the axis of the sealing door (6) on the outer circumference of the sealing door (6). A second gap (17) is formed between adjacent second protrusions (16) for the first protrusion (14) to pass through.

4. The sealing door body for an annealing furnace according to claim 1, characterized by The locking ring (11) protrudes a distance from the feed inlet (2) at the end where the first locking element is provided.

5. The sealing door body for an annealing furnace according to claim 1, characterized by The locking ring (11) has a slider (12) on its inner side, and the slider (12) is rotatably engaged with the groove (13) opened on the outer circumferential surface of the furnace body (1).

6. The sealing door body for an annealing furnace according to any one of claims 1 to 5, characterized in that, The sealed door also includes: A mounting ring (3) is fixedly disposed on the outer circumferential surface of the furnace body (1); A first hinge seat (4) with one end fixedly connected to the mounting ring (3); A second hinge seat (19) is fixedly connected to the sealing door (6) at one end, and a pivot (5) is provided between the other ends of the first hinge seat (4) and the second hinge seat (19).

7. The sealing door body for an annealing furnace according to claim 6, characterized by The second hinge seat (19) is also provided with a reinforcing member (20).

8. The sealing door body for an annealing furnace according to claim 6, wherein The sealed door also includes: A connecting rod (7) whose end is fixedly connected to the top end of the rotating shaft (5); A hanger (8) whose one end is fixedly connected to the other end of the connecting rod (7); A hook (9) whose one end is connected to the other end of the hanger (8); A lifting ring (10) is fixedly connected at one end to the sealing door (6), and the lifting ring (10) is connected to the hook (9).

9. The sealing door body for an annealing furnace according to claim 1, wherein The sealed door also includes a drive component for driving the locking ring (11) to rotate along the axis of the furnace body (1).

10. The sealing door for an annealing furnace according to claim 9, characterized in that, The driving component includes a hydraulic cylinder (18), the base of which is connected to the furnace body (1), and the output end of which is connected to a locking ring (11).

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