Swing type furnace door and furnace wall structure

Abstract

The utility model provides a swing type furnace door and furnace wall structure, which comprises a furnace door and two oppositely arranged driving switch mechanisms, each driving switch mechanism comprises a driving component and a crank arm, the driving component is used for being fixed on the side wall of a furnace wall, the crank arm comprises a rotating end and a connecting end, the driving end of the driving component is connected with the connecting end of the crank arm, and the rotating end of the driving component is connected with the connecting end of the crank arm. The furnace door is connected between the connecting ends of the two crank arms, and the rotating ends of the crank arms are rotatably connected to the side wall of the furnace wall; when the driving assembly drives the furnace door to swing downwards around the rotating end of the crank arm to be tightly attached to the outlet end of the furnace wall, the furnace wall is in a closed state. When the driving assembly drives the furnace door to swing upwards around the rotating end of the crank arm to be tightly attached to the upper portion of the outlet end of the furnace wall, the furnace wall is in an open-door state. The furnace door is arranged to be in a rotary swinging opening and closing mode to reduce direct abrasion between the furnace door and the outlet end of the furnace wall, so that the service life of the furnace door is prolonged, a better sealing effect is guaranteed, flame leakage is avoided, and potential safety hazards can be removed.

Description

Technical Field

[0001] The utility model relates to the technical field of slab reheating furnaces, in particular to a swing-out furnace door and furnace wall structure. Background Art

[0002] A slab reheating furnace is a kind of equipment (industrial furnace) in the metallurgical industry that heats materials or workpieces (generally metals) to the rolling or forging temperature. The furnace door of the slab reheating furnace is used to fit with the end wall at the furnace door outlet to achieve the purpose of blocking fire. When the billet passes, the furnace door is lifted, and it is lowered at other times.

[0003] The existing furnace door is a lifting type. When the relatively soft refractory material rubs against the rough end wall frequently, the wear is huge, and its sealing effect will soon be lost. The service life is short, and the maintenance intensity is high. This not only affects the furnace temperature and product quality, but also the flame will leak out and burn the surrounding steel structures, and the gas leakage will also cause serious safety hazards. The production cost and maintenance cost remain high.

[0004] In view of this, it is necessary to propose a swing-out furnace door and furnace wall structure to solve or at least alleviate the above defects. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a swing-out furnace door to solve the problems in the prior art that the furnace door will rub against the end wall frequently, resulting in huge wear and poor sealing effect.

[0006] To achieve the above purpose, the utility model provides a swing-out furnace door, which includes a furnace door and two driving and switching mechanisms arranged oppositely along the transverse direction. The two driving and switching mechanisms are respectively used to be fixed on both sides of the furnace wall, and the furnace door is connected between the two driving and switching mechanisms; wherein,

[0007] Each driving and switching mechanism includes a driving component and a crank arm. The driving component is used to be fixed on the side wall of the furnace wall. The crank arm includes a rotating end and a connecting end. The driving end of the driving component is connected to the connecting end of the crank arm. The furnace door is connected between the connecting ends of the two crank arms, and the rotating end of the crank arm is rotatably connected to the side wall of the furnace wall;

[0008] Wherein, when the driving component drives the furnace door to swing downward around the rotating end of the crank arm until it closely adheres to the outlet end of the furnace wall, the furnace wall is in a closed state; when the driving component drives the furnace door to swing upward around the rotating end of the crank arm until it closely adheres above the outlet end of the furnace wall, the furnace wall is in an open state.

[0009] Preferably, it further includes a connecting frame, and both ends of the connecting frame are respectively fixedly connected to the connecting ends of the two crank arms.

[0010] Preferably, it further includes a pressing plate, and a plurality of threaded holes are formed in the pressing plate. The pressing plate passes through the threaded holes by screws and extends into the connecting end of the crank arm to abut against the side wall of the connecting frame.

[0011] Preferably, the driving assembly includes a cylinder and a cylinder base. The cylinder base is used to be fixed on the side wall of the furnace wall. The connecting end of the cylinder is installed on the cylinder base, and the driving end of the cylinder is connected to the connecting end of the crank arm.

[0012] Preferably, the connecting end of the cylinder is rotatably connected to the cylinder base.

[0013] Preferably, the cross-section of the furnace door is rectangular, and the furnace door is attached to the exact middle of the outlet end of the furnace wall.

[0014] Preferably, the connecting beam is in a gate shape, and the horizontal section of the connecting beam is arranged above the furnace door.

[0015] Preferably, the horizontal length of the furnace door is 2m to 5m.

[0016] Preferably, the thickness of the furnace door is 20cm to 52cm.

[0017] This application also provides a furnace wall structure, including a furnace wall which has an outlet end for steel tapping, and further includes the swing-open furnace door as described above. The driving and switching mechanism of the swing-open furnace door is fixed on the side wall of the furnace wall, and the furnace door of the swing-open furnace door is arranged at the outlet end of the furnace wall so as to be swingable up and down.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] An opening - type furnace door and furnace wall structure provided by the utility model includes a furnace door and two driving and switching mechanisms arranged oppositely along the transverse direction. The two driving and switching mechanisms are respectively used to be fixed on both sides of the furnace wall. The furnace door is connected between the two driving and switching mechanisms. Each driving and switching mechanism includes a driving component and a crank arm. The driving component is used to be fixed on the side wall of the furnace wall. The crank arm includes a rotating end and a connecting end. The driving end of the driving component is connected to the connecting end of the crank arm. The furnace door is connected between the connecting ends of the two crank arms. The rotating end of the crank arm is rotatably connected to the side wall of the furnace wall. When the driving component drives the furnace door to swing downward around the rotating end of the crank arm until it closely adheres to the outlet end of the furnace wall, the furnace wall is in a closed - door state. When the driving component drives the furnace door to swing upward around the rotating end of the crank arm until it closely adheres above the outlet end of the furnace wall, the furnace wall is in an open - door state. In this way, by setting the furnace door in a rotating and opening - type switching form, the direct abrasion between the furnace door and the outlet end of the furnace wall can be reduced, thereby prolonging the service life of the furnace door, ensuring a better sealing effect, avoiding flame leakage to remove potential safety hazards, reducing labor intensity, and reducing maintenance costs while reducing wear compensation. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is a three - dimensional schematic diagram of the application scenario of the overall structure in an embodiment of the present utility model;

[0022] Figure 2 It is a side schematic diagram of the application scenario of the overall structure in an embodiment of the present utility model;

[0023] Figure 3 It is a front - elevation schematic diagram of the application scenario of the overall structure in an embodiment of the present utility model.

[0024] The realization of the purpose, functional characteristics, and advantages of the present utility model will be further described with reference to the embodiments and the drawings.

[0025] Explanation of the Reference Numerals in the Drawings:

[0026] 10. Driving and switching mechanism; 110. Driving component; 111. Cylinder; 112. Cylinder base; 120. Crank arm; 121. Rotating end; 122. Connecting end; 130. Connecting frame; 140. Pressing plate; 141. Screw; 20. Furnace door; 30. Furnace wall; 310. Outlet end. Detailed Embodiment

[0027] It should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0031] Please refer to the attached Figures 1-3 , a swing-open furnace door in an embodiment provided by the present invention includes a furnace door 20 and two driving switch mechanisms 10 arranged oppositely along the transverse direction. The two driving switch mechanisms 10 are respectively used to be fixed on both sides of a furnace wall 30, and the furnace door 20 is connected between the two driving switch mechanisms 10. First of all, it should be noted that the transverse direction in this application refers to the width direction of the furnace wall 30; different from the prior art where the furnace door 20 is a lifting type, when the relatively soft refractory material frequently rubs against the rough end wall, the wear is huge, and its sealing effect will be quickly lost, the service life is short, and the maintenance intensity is high. In this way, not only the furnace temperature is affected, the product quality is affected, the flame will leak out and burn the surrounding steel structures, but also the gas leakage will cause serious safety hazards, and the production cost and maintenance cost remain high. This application solves the above defects in the prior art by setting a swing-open furnace door and a furnace wall 30 structure. Specifically as follows:

[0032] Each of the driving switch mechanisms 10 includes a driving component 110 and a crank arm 120. The driving component 110 is used to be fixed on the side wall of the furnace wall 30. The crank arm 120 includes a rotating end 121 and a connecting end 122. The driving end of the driving component 110 is connected to the connecting end 122 of the crank arm 120. The furnace door 20 is fixed between the connecting ends 122 of the two crank arms 120. The rotating end 121 of the crank arm 120 is rotatably connected to the side wall of the furnace wall 30. Wherein, when the driving component 110 drives the furnace door 20 to swing downward around the rotating end 121 of the crank arm 120 until it closely adheres to the outlet end 310 of the furnace wall 30, the furnace wall 30 is in a closed state. When the driving component 110 drives the furnace door 20 to swing upward around the rotating end 121 of the crank arm 120 until it closely adheres above the outlet end 310 of the furnace wall 30, the furnace wall 30 is in an open state.

[0033] Specifically, the swing-open furnace door in the present application includes a furnace door 20 and two driving switch mechanisms 10. The furnace door 20 is used to cover the outlet end 310 of the furnace wall 30 to open / close according to the operation requirements. The driving switch mechanism 10 is used to drive the furnace door 20 to swing so as to realize the switching between opening and closing. The two driving switch mechanisms 10 are respectively fixed on both sides of the furnace wall 30 to drive the furnace door 20 to swing simultaneously from both sides, thereby ensuring the uniform consistency of the swing.

[0034] Wherein, each of the driving switch mechanisms 10 includes a driving component 110 and a crank arm 120. The driving component 110 serves as the power source of the entire mechanism to drive the crank arm 120 to move. The crank arm 120 is used to connect the driving end of the driving component 110 and the furnace door 20. Thus, under the drive of the driving component 110, the furnace door 20 is driven to swing by the crank arm 120. Preferably, the crank arm 120 includes a rotating end 121 and a connecting end 122. The connecting end 122 is used to connect to the driving end of the driving component 110 and at the same time for the furnace door 20 to be connected and installed, so that the furnace door 20 is fixed between the connecting ends 122 of the two crank arms 120. The rotating end 121 is used to realize the rotation of the crank arm 120. It is rotatably connected to the side wall of the furnace wall 30, and can be connected by means of a pin shaft. In this way, when the rotating end 121 rotates, the connecting end 122 can swing around the rotating end 121, and the furnace door 20 fixedly installed on the connecting end 122 can swing synchronously around the rotating end 121 to realize the switching between opening and closing. And the way of switching by swinging will not directly rub against the furnace wall 30 to cause wear, improving the service life and sealing performance of the furnace door 20.

[0035] Among them, when the process of heating and calcining the billet is required, the driving component 110 drives the furnace door 20 to swing downward around the rotating end 121 of the crank arm 120, so as to swing to the position of blocking the outlet end 310 of the furnace wall 30 and closely adhere to the surface of the furnace wall 30 to ensure the sealing effect. At this time, the furnace wall 30 is in the closed state; when the billet needs to enter and exit from the outlet end 310 of the furnace wall 30, the driving component 110 drives the furnace door 20 to swing upward around the rotating end 121 of the crank arm 120, so as to swing to closely adhere to the upper part of the outlet end 310 of the furnace wall 30. At this time, the outlet end 310 of the furnace wall 30 is not blocked by the furnace door 20, and the furnace wall 30 is in the open state.

[0036] As a preferred embodiment of the present utility model, it further includes a connecting frame 130, and both ends of the connecting frame 130 are fixedly connected to the connecting ends 122 of the two crank arms 120 respectively.

[0037] It should be noted that the connecting frame 130 plays a role of synchronization, so that the two sides can swing synchronously during the swinging movement, thereby avoiding one side moving first and the other side moving later, resulting in distortion and damage to the entire structure. Therefore, both ends of the connecting frame 130 are fixedly connected to the connecting ends 122 of the two crank arms 120 respectively to achieve synchronous movement.

[0038] As a relatively preferred embodiment of the present utility model, it further includes a pressing plate 140. A plurality of threaded holes are formed in the pressing plate 140. The pressing plate 140 passes through the threaded holes by screws 141 and extends into the connecting end 122 of the crank arm 120 to abut against the side wall of the connecting frame 130.

[0039] It should be noted that the pressing plate 140 is used to improve the connection stability between the pressing plate 140 and the connecting end 122 of the crank arm 120. By screwing the pressing plate 140 with screws 141, the pressing plate 140 abuts against the side wall of the connecting frame 130 to apply an inward pressure to the connecting frame 130, ensuring stable connection and preventing loosening during the swinging process.

[0040] As a preferred embodiment of the present utility model, the driving component 110 includes a cylinder 111 and a cylinder base 112. The cylinder base 112 is used to be fixed on the side wall of the furnace wall 30. The connecting end 122 of the cylinder 111 is installed on the cylinder base 112, and the driving end of the cylinder 111 is connected to the connecting end 122 of the crank arm 120.

[0041] It should be noted that the cylinder 111 is used to apply a thrust / pull force to the connecting end 122 of the crank arm 120 in a telescopic manner, so as to drive the connecting end 122 of the crank arm 120 to swing around the rotating end 121, and the cylinder base 112 is used for installing the cylinder 111; thus, when the furnace wall 30 needs to be in the closed state, the cylinder 111 is driven to push the connecting end 122 of the crank arm 120, so that the connecting end 122 of the crank arm 120 swings downward around the rotating end 121 under the action of the thrust force and swings to closely adhere to the outlet end 310 of the furnace wall 30 for shielding; and when the furnace wall 30 needs to be in the open state, the cylinder 111 is driven to pull the connecting end 122 of the crank arm 120, so that the connecting end 122 of the crank arm 120 swings upward around the rotating end 121 under the action of the pulling force and is pulled up to a position above the outlet end 310 of the furnace wall 30 for the billet to freely enter and exit.

[0042] As a preferred embodiment of the present invention, the connecting end 122 of the cylinder 111 is rotatably connected to the cylinder base 112.

[0043] It should be noted that since the driving end of the cylinder 111 is connected to the connecting end 122 of the crank arm 120 and the cylinder 111 moves in an extending / contracting manner along its own extending direction, when the connecting end 122 of the crank arm 120 swings downward to rotate to the lower side, at this time the driving end of the cylinder 111 needs to face downward, and the connecting end 122 of the cylinder 111 needs to make a rotational fine adjustment around the cylinder base 112, otherwise structural damage will occur. Therefore, the connecting end 122 of the cylinder 111 is rotatably connected to the cylinder base 112; similarly, when the connecting end 122 of the crank arm 120 swings upward to rotate to the upper side, at this time the driving end of the cylinder 111 needs to face upward.

[0044] Furthermore, the cross-section of the furnace door 20 is rectangularly arranged, and the furnace door 20 is attached to the exact middle of the outlet end 310 of the furnace wall 30.

[0045] It should be noted that since the outlet end 310 of the furnace wall 30 is usually a rectangular opening, the cross-section of the furnace door 20 is arranged in a rectangular shape to ensure a better shielding and covering effect. In order to avoid unevenness on both sides during shielding, the furnace door 20 is attached to the exact middle of the outlet end 310 of the furnace wall 30, that is, the vertical center line of the furnace door 20 is aligned with the center line of the outlet end 310 of the furnace wall 30.

[0046] Furthermore, the connecting beam is in a door shape, and the horizontal section of the connecting beam is arranged above the furnace door 20.

[0047] It should be understood that the connecting beam is arranged in a door shape to avoid the installation of the connecting beam from affecting the normal swing of the furnace door 20. Therefore, the horizontal section of the connecting beam is arranged above the furnace door 20. In this way, the swing of the furnace door 20 will not be affected by the stop of the connecting beam while playing a synchronization role.

[0048] Further, the horizontal length of the furnace door 20 is 2m to 5m.

[0049] It should be noted that the horizontal length of the furnace door 20 refers to the length along the transverse direction, which can be set according to the length of the outlet end 310 of the furnace wall 30 along the transverse direction to ensure good sealing during shielding. Preferably, the horizontal length of the furnace door 20 can be set to 2m to 5m, and those skilled in the art can set it according to the situation.

[0050] Further, the thickness of the furnace door 20 is 20cm to 52cm.

[0051] It should be noted that since the temperature inside the furnace wall 30 is relatively high, if the thickness of the furnace door 20 is small, the furnace door 20 may not be able to withstand high-temperature calcination, but if the thickness is too large, it will be less flexible during swinging. Therefore, preferably, the thickness of the furnace door 20 is 20cm to 52cm, and those skilled in the art can choose according to actual needs.

[0052] This application also provides a furnace wall 30 structure, including the furnace wall 30, the furnace wall 30 has an outlet end 310 for steel discharging, and further includes the swing-open furnace door as described above. The drive switch mechanism 10 of the swing-open furnace door is fixed on the side wall of the furnace wall 30, and the furnace door 20 of the swing-open furnace door is arranged at the outlet end 310 of the furnace wall 30 so as to swing up and down.

[0053] It can be understood that the installation position of the drive switch mechanism 10 of the swing-open furnace door can be comprehensively selected according to the telescopic range of the cylinder 111 and the swing trajectory of the furnace door 20 and then installed on the side wall of the furnace wall 30; while the furnace door 20 of the swing-open furnace door needs to be correspondingly arranged at the outlet end 310 of the furnace wall 30 to ensure the opening / closing effect.

[0054] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An openable furnace door, characterized in that, It includes a furnace door and two driving and switching mechanisms arranged oppositely along the transverse direction. The two driving and switching mechanisms are respectively used to be fixed on both sides of the furnace wall, and the furnace door is connected between the two driving and switching mechanisms; wherein, Each driving and switching mechanism includes a driving component and a toggle arm. The driving component is used to be fixed on the side wall of the furnace wall. The toggle arm includes a rotating end and a connecting end. The driving end of the driving component is connected to the connecting end of the toggle arm. The furnace door is connected between the connecting ends of the two toggle arms, and the rotating end of the toggle arm is rotatably connected to the side wall of the furnace wall; Wherein, when the driving component drives the furnace door to swing downward around the rotating end of the toggle arm until it closely adheres to the outlet end of the furnace wall, the furnace wall is in a closed state; when the driving component drives the furnace door to swing upward around the rotating end of the toggle arm until it closely adheres above the outlet end of the furnace wall, the furnace wall is in an open state.

2. The swing-out furnace door according to claim 1, wherein, It further includes a connecting frame, and both ends of the connecting frame are respectively fixedly connected to the connecting ends of the two toggle arms.

3. The swing-out furnace door according to claim 2, characterized in that, It further includes a pressing plate. A plurality of threaded holes are formed in the pressing plate. The pressing plate passes through the threaded holes by screws and extends into the connecting end of the toggle arm to abut against the side wall of the connecting frame.

4. The swing-out furnace door according to claim 2, characterized in that, The driving component includes a cylinder and a cylinder base. The cylinder base is used to be fixed on the side wall of the furnace wall. The connecting end of the cylinder is installed on the cylinder base, and the driving end of the cylinder is connected to the connecting end of the toggle arm.

5. The swing-out furnace door according to claim 4, characterized in that, The connecting end of the cylinder is rotatably connected to the cylinder base.

6. The swing-out furnace door according to claim 1, wherein The cross-section of the furnace door is rectangular, and the furnace door is attached to the exact middle of the outlet end of the furnace wall.

7. The swing-out furnace door according to claim 2, characterized in that, The connecting beam is in a door shape, and the horizontal section of the connecting beam is arranged above the furnace door.

8. The swing-out furnace door according to claim 6, characterized in that, The horizontal length of the furnace door is 2m to 5m.

9. The swing-out furnace door according to claim 6, wherein, The thickness of the furnace door is 20cm to 52cm.

10. A furnace wall structure includes a furnace wall, and the furnace wall has an outlet end for tapping steel. It is characterized in that, It further includes a swing-open furnace door according to any one of claims 1-9. The driving and switching mechanism of the swing-open furnace door is fixed on the side wall of the furnace wall, and the furnace door of the swing-open furnace door is arranged to be swingable up and down at the outlet end of the furnace wall.

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