Cold rolling annealing furnace inlet sealing device

Abstract

The utility model relates to the technical field of annealing furnaces, and provides a cold rolling annealing furnace inlet sealing device which comprises a first sealing box body and a second sealing box body, the first sealing box body is of an annular structure and installed at an annealing furnace inlet, and air supply pipes are arranged at the two ends of the first sealing box body correspondingly; at least one nozzle is arranged in the first sealing box body and connected with an air supply pipe, the second sealing box body is arranged on the first sealing box body, a sealing roller set is arranged at the inlet end of the second sealing box body and comprises a first sealing roller and a second sealing roller, and first bearing seats are arranged at the two ends of the first sealing roller respectively. Through the adjusting mechanism and the sealing roller set, the gap between the two sealing rollers and the strip steel can be changed, entering of external air is reduced, the first sealing box body is designed to be of an annular structure, sealing positive pressure is more easily formed in the first sealing box body, external air is driven out of the first sealing box body, and the sealing effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of annealing furnaces, and in particular to an inlet sealing device for a cold rolling annealing furnace. Background Art

[0002] Annealing is a common process in material processing. In order to achieve certain properties, such as reducing the hardness of the workpiece and improving its plasticity, the workpiece needs to be heated, maintained for a period of time, and then slowly cooled to obtain this property. The annealing furnace is an indispensable processing equipment in the annealing process.

[0003] In production, if the sealing performance of the annealing furnace entrance is not good, a large amount of oxygen will enter the furnace, causing oxidation of the product and seriously affecting the product quality. Therefore, a sealing device for the entrance of a cold rolling annealing furnace is proposed. Utility Model Content

[0004] The purpose of the embodiment of the present application is to provide a cold rolling annealing furnace inlet sealing device, which adopts a combination of sealing roller group sealing and inflation sealing to improve the sealing effect.

[0005] The present invention provides a cold rolling annealing furnace inlet sealing device, which adopts the following technical solutions:

[0006] A cold rolling annealing furnace inlet sealing device comprises a first sealing box and a second sealing box. The first sealing box is an annular structure and is installed at the annealing furnace inlet. Air supply pipes are respectively provided at both ends of the first sealing box. At least one nozzle is provided inside the first sealing box, and the nozzle is connected to the air supply pipe.

[0007] The second sealing box body is arranged on the first sealing box body, and a sealing roller group is provided at the inlet end of the second sealing box body, and the sealing roller group includes a first sealing roller and a second sealing roller. First bearing seats are respectively provided at both ends of the first sealing roller, and second bearing seats are respectively provided at both ends of the second sealing roller. Two groups of adjustment mechanisms are relatively provided on the outside of the second sealing box body, and the adjustment mechanisms drive the first bearing seat and the second bearing seat to move closer to or away from each other.

[0008] Preferably, the adjustment mechanism includes a cylinder, an active crank arm, a driven crank arm, a first connecting member and a second connecting member. The cylinder is arranged outside the annealing furnace. The active crank arm and the driven crank arm can be rotatably installed on the outside of the second sealed box body. One end of the active crank arm is hinged to the telescopic end of the cylinder, and the other end of the active crank arm is connected to the first bearing seat, and the driven crank arm is connected to the second bearing seat. The first connecting member is fixedly connected to the active crank arm, and the second connecting member is fixedly connected to the driven crank arm. The first connecting member is hinged to the second connecting member.

[0009] Preferably, a support frame is provided outside the annealing furnace, and the cylinder is provided on the support frame.

[0010] Preferably, a sealing plate is provided opposite to the inlet end of the second sealing box, and the sealing plate is located between the first sealing roller and the second sealing roller.

[0011] Preferably, a sealing curtain is provided opposite to the inlet end of the second sealing box, one of the sealing curtains is in contact with the first sealing roller, and the other sealing curtain is in contact with the second sealing roller.

[0012] Preferably, the first sealed box is welded to the outside of the annealing furnace.

[0013] Preferably, the first sealed box body and the second sealed box body are connected via a flange.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present application sets up an adjustment mechanism and a sealing roller group. Under the action of the adjustment mechanism, the first bearing seat and the second bearing seat are moved closer to or away from each other, so that it is suitable for strip steels of different thicknesses. At the same time, the gap between the first sealing roller and the strip steel and the gap between the second sealing roller and the strip steel can be reduced at the same time, reducing the external air from entering the interior of the annealing furnace through the gap between the two sealing rollers and the strip steel.

[0016] By designing the first sealed box as a ring structure, compared to a square structure, when the cross-sectional area is equal, since there is no resistance at the four corners, after the high-pressure inert gas is sprayed into the interior of the first sealed box, it is easier to form a sealed positive pressure inside the first sealed box, drive the external air out of the first sealed box, so that the external air cannot enter the interior of the annealing furnace, and the gas inside the annealing furnace is not easy to overflow out of the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic structural diagram of some embodiments of the present utility model;

[0019] Figure 2 for Figure 1 A magnified view of the structure in the middle.

[0020] The reference numerals are:

[0021] 1. First sealing box; 2. Second sealing box; 3. Annealing furnace; 4. Air supply pipe; 5. Nozzle; 6. Sealing roller assembly; 7. First sealing roller; 8. Second sealing roller; 9. First bearing seat; 10. Second bearing seat; 11. Adjustment mechanism; 12. Cylinder; 13. Active crank arm; 14. Driven crank arm; 15. First connecting piece; 16. Second connecting piece; 17. Support frame; 18. Sealing plate; 19. Sealing curtain. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0027] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] Example

[0029] like Figure 1 and Figure 2 As shown, the cold rolling annealing furnace inlet sealing device described in the embodiment of the present application includes a first sealing box 1 and a second sealing box 2. The first sealing box 1 is a ring structure. The first sealing box 1 is installed at the entrance of the annealing furnace 3. Air supply pipes 4 are respectively provided at both ends of the first sealing box 1. The nozzle 5 is connected to the air supply pipe 4. The air supply pipe 4 is externally connected to a high-pressure air pump. At least one nozzle 5 is provided inside the first sealing box 1. When two or more nozzles 5 are provided, the nozzles 5 are arranged along the running direction of the strip ( Figure 1 The sealing rollers 6 are provided at the inlet end of the second sealing box 2. The sealing rollers 6 include a first sealing roller 7 and a second sealing roller 8. The first sealing roller 7 has first bearing seats 9 at both ends, and the second sealing roller 8 has second bearing seats 10 at both ends. Two sets of adjustment mechanisms 11 are relatively provided on the outside of the second sealing box 2. The adjustment mechanisms 11 drive the first bearing seats 9 and the second bearing seats 10 to move closer to or away from each other.

[0030] During use, under the action of the adjusting mechanism 11, the first bearing seat 9 and the second bearing seat 10 are moved closer to or away from each other, so as to be suitable for strips of different thicknesses. At the same time, the gap between the first sealing roller 7 and the strip and the gap between the second sealing roller 8 and the strip can be reduced at the same time, thereby reducing the external air from entering the interior of the annealing furnace 3 through the gap between the two sealing rollers and the strip. The external high-pressure air pump pumps the inert gas into the interior of the air supply pipe 4 and sprays it out through the nozzle 5. The nozzle 5 sprays the high-pressure inert gas onto the strip, forming a sealed positive pressure inside the first sealed box 1, driving the external air out of the first sealed box 1, so that the external air cannot enter the interior of the annealing furnace 3, and the gas inside the annealing furnace 3 is not easy to overflow outside the furnace.

[0031] In this embodiment, the adjustment mechanism 11 includes a cylinder 12, an active crank arm 13, a driven crank arm 14, a first connecting member 15 and a second connecting member 16. The cylinder 12 is arranged outside the annealing furnace 3. The active crank arm 13 and the driven crank arm 14 can be rotatably mounted on the outside of the second sealed box 2. One end of the active crank arm 13 is hinged to the telescopic end of the cylinder 12, and the other end of the active crank arm 13 is connected to the first bearing seat 9. The driven crank arm 14 is connected to the second bearing seat 10. The first connecting member 15 is fixedly connected to the active crank arm 13, and the second connecting member 16 is fixedly connected to the driven crank arm 14. The first connecting member 15 and the second connecting member 16 are fixedly connected to the driven crank arm 14. Hinge, when in use, the cylinder 12 extends and drives the active crank arm 13 to rotate counterclockwise, the active crank arm 13 drives the first connecting member 15 to move, under the interaction of the first connecting member 15 and the second connecting member 16, the second connecting member 16 drives the driven crank arm 14 to rotate, the first sealing roller 7 and the second sealing roller 8 move away from each other, the cylinder 12 contracts and drives the active crank arm 13 to rotate clockwise, the active crank arm 13 drives the first connecting member 15 to move, under the interaction of the first connecting member 15 and the second connecting member 16, the second connecting member 16 drives the driven crank arm 14 to rotate, the first sealing roller 7 and the second sealing roller 8 move closer to each other.

[0032] In this embodiment, a support frame 17 is provided outside the annealing furnace 3 , and the cylinder 12 is provided on the support frame 17 .

[0033] In this embodiment, a sealing plate 18 is provided opposite the inlet end of the second sealing box body 2. The sealing plate 18 is located between the first sealing roller 7 and the second sealing roller 8. The sealing plate 18 is used to reduce the gap between the first sealing roller 7 and the second sealing roller 8 to improve the sealing effect. The sealing plate 18 is connected to the second sealing box body 2 through a flange.

[0034] In this embodiment, a sealing curtain 19 is arranged opposite to the inlet end of the second sealing box body 2, one sealing curtain 19 is in contact with the first sealing roller 7, and the other sealing curtain 19 is in contact with the second sealing roller 8. By setting the sealing curtain 19, the gap between the first sealing roller 7 and the second sealing box body 2, and the gap between the second sealing roller 8 and the second sealing box body 2 can be reduced, thereby further improving the sealing effect.

[0035] In this embodiment, the first sealed box body 1 is welded to the outside of the annealing furnace 3. The welded structure has the advantages of high rigidity and good integrity, while easily ensuring air tightness and water tightness.

[0036] In this embodiment, the first sealed box body 1 and the second sealed box body 2 are connected via a flange. The flange connection has the advantages of easy disassembly, high strength, and good sealing performance.

[0037] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A cold rolling annealing furnace inlet sealing device, characterized by: The invention comprises a first sealed box body and a second sealed box body, wherein the first sealed box body is an annular structure and is installed at the entrance of the annealing furnace. Air supply pipes are respectively provided at both ends of the first sealed box body, and at least one nozzle is provided inside the first sealed box body, and the nozzle is connected to the air supply pipe; The second sealing box body is arranged on the first sealing box body, and a sealing roller group is provided at the inlet end of the second sealing box body, and the sealing roller group includes a first sealing roller and a second sealing roller. First bearing seats are respectively provided at both ends of the first sealing roller, and second bearing seats are respectively provided at both ends of the second sealing roller. Two groups of adjustment mechanisms are relatively provided on the outside of the second sealing box body, and the adjustment mechanisms drive the first bearing seat and the second bearing seat to move closer to or away from each other.

2. The cold rolling annealing furnace inlet sealing device according to claim 1, characterized in that: The adjusting mechanism includes a cylinder, an active crank arm, a driven crank arm, a first connecting member and a second connecting member. The cylinder is arranged outside the annealing furnace. The active crank arm and the driven crank arm can be rotatably mounted on the outside of the second sealed box. One end of the active crank arm is hinged to the telescopic end of the cylinder, and the other end of the active crank arm is connected to the first bearing seat. The driven crank arm is connected to the second bearing seat. The first connecting member is fixedly connected to the active crank arm, and the second connecting member is fixedly connected to the driven crank arm. The first connecting member is hinged to the second connecting member.

3. The cold rolling annealing furnace inlet sealing device according to claim 2, characterized in that: A support frame is provided outside the annealing furnace, and the cylinder is arranged on the support frame.

4. The cold rolling annealing furnace inlet sealing device according to claim 1, characterized in that: A sealing plate is provided opposite to the inlet end of the second sealing box, and the sealing plate is located between the first sealing roller and the second sealing roller.

5. The cold rolling annealing furnace inlet sealing device according to claim 4, characterized in that: A sealing curtain is provided opposite to the inlet end of the second sealing box, wherein one of the sealing curtains is in contact with the first sealing roller, and the other sealing curtain is in contact with the second sealing roller.

6. The cold rolling annealing furnace inlet sealing device according to claim 1, characterized in that: The first sealed box is welded to the outside of the annealing furnace.

7. The cold rolling annealing furnace inlet sealing device according to claim 1, characterized in that: The first sealed box body and the second sealed box body are connected via a flange.

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