Sealing door for industrial furnace

Abstract

The utility model relates to a sealing door for an industrial furnace, which comprises a door frame, a furnace door vertically sliding on the inner side of the door frame, and at least one sealing mechanism for sealing the furnace door, the sealing mechanism comprises at least one pressing assembly for pressing the furnace door on the outer wall of the industrial furnace, and a driving assembly connected with the pressing assembly; the pressing assembly comprises a groove, a pressing piece and a connecting arm, wherein the groove is formed backwards from the rear groove wall of the sliding groove and detachably connected with the sliding piece, the pressing piece is rotationally connected to the door frame around a first rotating shaft arranged in the left-right direction and presses or releases the furnace door through rotation, and one end of the connecting arm is fixedly connected with the first rotating shaft. The number and the positions of the sliding pieces correspond to those of the grooves, and the driving assembly is rotationally connected with the other end of the connecting arm. The problems that a traditional furnace door is not tight in sealing, runs out of fire and the like are solved, the service life of the sealing door is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to a sealing door for an industrial furnace, which is suitable for the technical field of industrial furnace processing. Background Art

[0002] An industrial furnace is a thermal equipment that uses heat from combustion or electric energy conversion to heat workpieces in industrial production. In order to ensure the stability of the processing environment in the furnace and avoid the high temperature in the furnace affecting personnel, it is usually necessary to use a furnace door to close the furnace mouth of the industrial furnace (i.e., the hole for adding fuel to the furnace or taking and placing workpieces). The furnace door of an existing industrial furnace usually adopts a double-slot guided deadweight clamping mechanism, that is, the sliding direction of the furnace door is guided by sliding, and when the furnace door is closed, the furnace door is covered and pressed against the furnace mouth by its own gravity. However, the sliding track or furnace door of the industrial furnace is prone to deformation during long-term use, making it impossible to completely seal the furnace mouth by the deadweight of the furnace door alone, and even the furnace door cannot slide to a completely closed position, which leads to the industrial furnace catching fire and causing adverse effects on production. Furthermore, if the furnace door is not closed tightly, it will also cause the furnace door sealing strip and other components to age faster due to the high temperature environment in the furnace, further reducing the sealing effect of the furnace door, while reducing the service life and maintenance cost of the furnace door. Utility Model Content

[0003] In order to solve the defects of the prior art mentioned above, the utility model proposes a sealing door for an industrial furnace.

[0004] The technical scheme adopted by the utility model is: a sealed door for an industrial furnace, comprising a door frame fixed on the outer wall of the industrial furnace, a furnace door slidably arranged on the inner side of the door frame, and at least one sealing mechanism for sealing the furnace door, wherein the inner walls on the left and right sides of the door frame are provided with slide grooves, the furnace door is slidably connected to the slide grooves through sliding members respectively arranged on the left and right side walls, the furnace door has a first position located directly in front of the furnace opening and a second position staggered with the furnace opening by sliding itself, each sealing mechanism comprises at least one pressing component for pressing the furnace door against the outer wall of the industrial furnace, and a driving component connected to the pressing component, the pressing component comprises a rear groove wall extending from the rear groove wall to the rear A groove is opened and connected to the sliding part in a detachable manner, a pressing part is rotatably connected to the door frame around a first rotating shaft arranged in the left and right directions and presses or releases the furnace door by rotation, and a connecting arm is fixedly connected to the first rotating shaft at one end. The number and position of the sliding parts correspond to the grooves, and the driving component is rotatably connected to the other end of the connecting arm. The sealing door has at least two working states. When it is in the first working state, the furnace door is in the first position, the pressing part is pressed on the furnace door, the furnace door is pressed against the outer wall of the industrial furnace, and the sliding part is located in the groove; when the sealing door is in the second working state, the furnace door is in the second position, the pressing part is detached from the furnace door, and the sliding part is detached from the groove and located in the slide groove. When the furnace door slides to the first position along the slide groove, the sliding part synchronously slides to the front of the groove, and then drives the connecting arm through the driving component to make the other end of the connecting arm rotate around the axis of the first rotating shaft. At the same time, the first rotating shaft is driven to rotate through one end of the connecting arm, and the clamping part is driven to rotate, so that the clamping part is pressed on the furnace door and applies thrust to the furnace door to push the furnace door backward until the sliding part moves back into the groove, so that the sealed door enters the first working state. The pressure applied to the furnace door by the clamping part makes the furnace door press against the outer wall of the industrial furnace, ensuring the sealing effect of the furnace door, avoiding poor sealing due to deformation of the furnace door or the track, and avoiding aging of the furnace door structure due to fire at the furnace mouth, thereby increasing the service life of the industrial furnace and reducing maintenance costs.

[0005] Furthermore, the driving assembly includes a first connecting rod arranged in the up-down direction, a second connecting rod having one end rotatably connected to one end of the first connecting rod around a second rotating shaft arranged in the left-right direction, a driver having an output end connected to the other end of the second connecting rod and used to drive the first connecting rod to move up and down, and the other end of the connecting arm is rotatably connected to the first connecting rod around a third rotating shaft arranged in the left-right direction. The second connecting rod is driven by the driver, and the first connecting rod is driven to realize the driving of the other end of the connecting arm. The rotational connection between the first connecting rod and the second connecting rod can prevent the first connecting rod from getting stuck during the movement, thereby ensuring the normal operation of the driving assembly.

[0006] Furthermore, the driver is configured as a telescopic cylinder, and the driving assembly further comprises a base fixed to the outer wall of the industrial furnace, the cylinder body of the telescopic cylinder being rotatably connected to the base around a fourth rotating shaft arranged in the left-right direction. The second connecting rod is pushed or pulled by the telescopic cylinder to drive the clamping assembly, and the rotatable connection between the cylinder body of the telescopic cylinder and the base can ensure the smooth progress of the driving process.

[0007] Furthermore, at least two sealing mechanisms are provided, and the at least two sealing mechanisms are respectively located on the left and right sides of the furnace door. The at least two sealing mechanisms simultaneously apply thrust to the left and right sides of the furnace door, further improving the sealing effect.

[0008] Furthermore, each sealing mechanism includes at least two pressing assemblies, which are arranged on the side of the furnace door in the vertical direction. By using at least two pressing assemblies arranged vertically, it is ensured that the four corners of the furnace door can be subjected to sufficient pressure, thereby further improving the sealing effect of the furnace door.

[0009] Furthermore, the pressing member includes a rocker arm fixedly connected to the first rotating shaft at one end, and a roller connected to the other end of the rocker arm rotating around a fifth rotating shaft arranged in the left-right direction, and when the sealing door is in the first working state, the roller is pressed against the furnace door. Specifically, the angle between the projections of the rocker arm and the connecting arm on a plane perpendicular to the first rotating shaft is greater than 0, and the first rotating shaft drives the rocker arm to rotate around the axis of the first rotating shaft, so that the roller at the other end gradually presses against the furnace door during the rotation process, and at the same time, the roller converts the sliding contact between the pressing member and the furnace door into rolling contact, thereby avoiding the adverse effects caused by friction and further improving the sealing effect.

[0010] Furthermore, the sealing door also includes a sealing strip arranged between the rear of the furnace door and the outer wall of the industrial furnace. When the sealing door is in the first working state, the furnace door and the outer wall of the industrial furnace clamp the sealing strip therebetween to ensure a sealing effect.

[0011] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0012] The sealing door for an industrial furnace in the utility model realizes the sealing of the furnace door through a sealing mechanism. When the furnace door slides to the front of the furnace mouth, the pressing part is driven by the driving assembly to make the pressing part apply a backward force to the furnace door, so as to push the furnace door cover and press it on the furnace mouth. On the basis of ensuring the sealing effect of the furnace door, the problems of poor sealing and fire in the industrial furnace caused by the traditional method of sealing by the dead weight of the furnace door are avoided, thereby avoiding the problems of reduced service life of the industrial furnace and increased maintenance cost caused by aging of the furnace door structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar mechanisms or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure of the embodiment shown in the top view when it is in the first working state;

[0016] Figure 3 yes Figure 1 A schematic diagram of the structure of the embodiment shown in the top view when it is in the second working state;

[0017] Figure 4 yes Figure 1 A schematic diagram of the side structure of the sealing mechanism in the illustrated embodiment when it is in the first working state;

[0018] Figure 5 yes Figure 1 A schematic diagram of the side structure of the sealing mechanism in the illustrated embodiment when it is in the second working state;

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Door frame; 11. Slide groove; 2. Furnace door; 21. Sliding member; 3. Sealing mechanism; 31. Clamping assembly; 311. Groove; 312. Clamping member; 313. Connecting arm; 314. First rotating shaft; 315. Rocker arm; 316. Roller; 32. Driving assembly; 321. First connecting rod; 322. Second connecting rod; 323. Second rotating shaft; 324. Driver; 325. Third rotating shaft; 326. Base; 327. Fourth rotating shaft. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be noted that the terms "up", "down", "left", "right", "front" and "rear" describing the directions are defined according to the setting direction of the sealing door. Specifically, when the sealing door is set on the outer wall of the industrial furnace, the side where the sealing door is located is the "front", and the opposite is the "rear"; when the industrial furnace is placed normally, the side facing the ground is the "down", and the opposite is the "up"; when a person faces forward, the left hand side of the person is the "left", and the opposite is the "right". The terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Reference Figure 1-5The sealed door for an industrial furnace in this embodiment includes a door frame 1 fixed on the outer wall of the industrial furnace, a furnace door 2 slidably arranged on the inner side of the door frame 1, and at least one sealing mechanism 3 for sealing the furnace door 2. Slide grooves 11 are provided on the inner walls on both sides of the door frame 1. The furnace door 2 is slidably connected to the slide grooves 11 through sliding members 21 respectively arranged on the left and right side walls. The furnace door 2 has a first position located directly in front of the furnace opening and a second position staggered from the furnace opening by sliding itself. Each sealing mechanism 3 includes at least one pressing component 31 for pressing the furnace door 2 against the outer wall of the industrial furnace, and a driving component 32 connected to the pressing component 31. The pressing component 31 includes a recessed groove 11 opened from the rear groove wall of the slide groove 11 to the rear and detachably connected to the sliding member 21. The groove 311, the clamping piece 312 that is rotatably connected to the door frame 1 around the first rotating shaft 314 set along the left and right directions and presses or releases the furnace door 2 by rotation, and the connecting arm 313 that is fixedly connected to the first rotating shaft 314 at one end, the number and position of the sliding members 21 correspond to the groove 311, the driving assembly 32 is rotatably connected to the other end of the connecting arm 313, and the sealing door has at least two working states. When it is in the first working state, the furnace door 2 is in the first position, the clamping piece 312 is pressed on the furnace door 2, the furnace door 2 is pressed against the outer wall of the industrial furnace, and the sliding member 21 is located in the groove 311; when the sealing door is in the second working state, the furnace door 2 is in the second position, the clamping piece 312 is separated from the furnace door 2, and the sliding member 21 is separated from the groove 311 and is located in the slide groove 11. When the furnace door 2 slides to the first position along the slide groove 11, the sliding member 21 synchronously slides to the front of the groove 311, and then drives the connecting arm 313 through the driving component 32, so that the other end of the connecting arm 313 rotates around the axial line of the first rotating shaft 314, and at the same time drives the first rotating shaft 314 to rotate through one end of the connecting arm 313, and drives the clamping member 312 to rotate, so that the clamping member 312 is pressed on the furnace door 2, and applies a thrust to the furnace door 2, pushing the furnace door 2 to move backward until the sliding member 21 moves back into the groove 311, so that the sealed door enters the first working state, and the pressure applied to the furnace door 2 by the clamping member 312 makes the furnace door 2 press against the outer wall of the industrial furnace, ensuring the sealing effect of the furnace door 2, avoiding poor sealing due to deformation of the furnace door or track, and avoiding aging of the furnace door structure due to fire at the furnace mouth, thereby increasing the service life of the industrial furnace and reducing maintenance costs.

[0024] In a more preferred embodiment, the driving assembly 32 includes a first connecting rod 321 arranged in the up-down direction, a second connecting rod 322 having one end rotatably connected to one end of the first connecting rod 321 around a second rotating shaft 323 arranged in the left-right direction, and a driver 324 having an output end connected to the other end of the second connecting rod 322 and used to drive the first connecting rod 321 to move up and down, and the other end of the connecting arm 313 is rotatably connected to the first connecting rod 321 around a third rotating shaft 325 arranged in the left-right direction. The second connecting rod 322 is driven by the driver 324, and the first connecting rod 321 is driven to realize the driving of the other end of the connecting arm 313. The rotational connection between the first connecting rod 321 and the second connecting rod 322 can prevent the first connecting rod 321 from getting stuck during the movement, thereby ensuring that the driving assembly 32 can operate normally.

[0025] In a more preferred embodiment, the driver 324 is configured as a telescopic cylinder, and the driving assembly 32 further includes a base 326 fixed to the outer wall of the industrial furnace, and the cylinder body of the telescopic cylinder is rotatably connected to the base 326 around a fourth rotating shaft 327 arranged along the left-right direction. The second connecting rod 322 is pushed or pulled by the telescopic cylinder to drive the clamping assembly 31, and the rotatable connection between the cylinder body of the telescopic cylinder and the base 326 can ensure the smooth progress of the driving process.

[0026] In a more preferred embodiment, at least two sealing mechanisms 3 are provided, and the at least two sealing mechanisms 3 are respectively located on the left and right sides of the furnace door 2. At least two sealing mechanisms 3 simultaneously apply thrust to the left and right sides of the furnace door 2, further improving the sealing effect.

[0027] In a more preferred embodiment, each sealing mechanism includes at least two pressing assemblies 31, and at least two pressing assemblies 31 are arranged in the vertical direction on the side of the furnace door 2. By using at least two pressing assemblies 31 arranged vertically, it is ensured that the four corners of the furnace door 2 can be subjected to sufficient pressure, thereby further improving the sealing effect of the furnace door 2.

[0028] In a more preferred embodiment, the pressing member 312 includes a rocker arm 315 fixedly connected to the first rotating shaft 314 at one end, and a roller 316 connected to the other end of the rocker arm 315 by rotating around a fifth rotating shaft 317 arranged in the left-right direction. When the sealing door is in the first working state, the roller 316 is pressed against the furnace door 2. Specifically, the angle between the projections of the rocker arm 315 and the connecting arm 313 on the plane perpendicular to the first rotating shaft 314 is greater than 0. The rocker arm 315 is driven by the first rotating shaft 314 to rotate around the axis of the first rotating shaft 314, so that the roller 316 at the other end is gradually pressed against the furnace door 2 during the rotation process. At the same time, the roller 316 converts the sliding contact between the pressing member 312 and the furnace door 2 into rolling contact, thereby avoiding the adverse effects caused by friction and further improving the sealing effect.

[0029] In a more preferred embodiment, the sealing door also includes a sealing strip (not shown in the drawings) arranged between the back of the furnace door 2 and the outer wall of the industrial furnace. When the sealing door is in the first working state, the furnace door 2 and the outer wall of the industrial furnace clamp the sealing strip therebetween to ensure a sealing effect.

[0030] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0031] The sealing door for an industrial furnace in the utility model realizes the sealing of the furnace door through a sealing mechanism. When the furnace door slides to the front of the furnace mouth, the pressing part is driven by the driving assembly to make the pressing part apply a backward force to the furnace door, so as to push the furnace door cover and press it on the furnace mouth. On the basis of ensuring the sealing effect of the furnace door, the problems of poor sealing and fire in the industrial furnace caused by the traditional method of sealing by the dead weight of the furnace door are avoided, thereby avoiding the problems of reduced service life of the industrial furnace and increased maintenance cost caused by aging of the furnace door structure.

[0032] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A sealed door for an industrial furnace, characterized in that: The industrial furnace comprises a door frame (1) fixed to the outer wall of the industrial furnace, a furnace door (2) slidably arranged on the inner side of the door frame (1), and at least one sealing mechanism (3) for sealing the furnace door (2), wherein the inner walls on the left and right sides of the door frame (1) are provided with sliding grooves (11), the furnace door (2) is slidably connected to the sliding grooves (11) through sliding members (21) respectively arranged on the left and right side walls, the furnace door (2) has a first position located directly in front of the furnace opening and a second position offset from the furnace opening by sliding itself, each of the sealing mechanisms (3) comprises at least one pressing component (31) for pressing the furnace door (2) against the outer wall of the industrial furnace, and a driving component (32) connected to the pressing component (31), the pressing component (31) comprising a groove (311) opened from the rear groove wall of the sliding groove (11) to the rear and detachably connected to the sliding member (21), a first groove (311) arranged around the second groove (311) along the left and right directions. A rotating shaft (314) is rotatably connected to the door frame (1) and is used to press or release a pressing member (312) of the furnace door (2) by rotation, and a connecting arm (313) having one end fixedly connected to the first rotating shaft (314); the number and position of the sliding members (21) correspond to the groove (311); the driving assembly (32) is rotatably connected to the other end of the connecting arm (313); the sealing door has at least two working states; when it is in a first working state, the furnace door (2) is in a first position, the pressing member (312) is pressed against the furnace door (2), the furnace door (2) is pressed against the outer wall of the industrial furnace, and the sliding member (21) is located in the groove (311); when the sealing door is in a second working state, the furnace door (2) is in a second position, the pressing member (312) is separated from the furnace door (2), and the sliding member (21) is separated from the groove (311) and is located in the slide groove (11).

2. The sealed door for an industrial furnace according to claim 1, characterized in that: The driving assembly (32) comprises a first connecting rod (321) arranged in the up-down direction, a second connecting rod (322) having one end rotatably connected to one end of the first connecting rod (321) around a second rotating shaft (323) arranged in the left-right direction, and a driver (324) having an output end connected to the other end of the second connecting rod (322) and used for driving the first connecting rod (321) to move up and down, and the other end of the connecting arm (313) is rotatably connected to the first connecting rod (321) around a third rotating shaft (325) arranged in the left-right direction.

3. The sealed door for an industrial furnace according to claim 2, characterized in that: The driver (324) is configured as a telescopic cylinder, and the drive assembly (32) further comprises a base (326) fixed to the outer wall of the industrial furnace. The cylinder body of the telescopic cylinder is rotatably connected to the base (326) around a fourth rotating shaft (327) arranged in the left-right direction.

4. The sealed door for an industrial furnace according to claim 1, characterized in that: At least two sealing mechanisms (3) are provided, and the at least two sealing mechanisms (3) are respectively located on the left and right sides of the furnace door (2).

5. The sealed door for an industrial furnace according to claim 1, characterized in that: Each of the sealing mechanisms comprises at least two pressing assemblies (31), and at least two of the pressing assemblies (31) are arranged on the side of the furnace door (2) in the up-down direction.

6. The sealed door for an industrial furnace according to claim 1, characterized in that: The pressing member (312) comprises a rocker arm (315) having one end fixedly connected to the first rotating shaft (314), and a roller (316) rotatably connected to the other end of the rocker arm (315) around a fifth rotating shaft (317) arranged in the left-right direction; when the sealing door is in the first working state, the roller (316) is pressed against the furnace door (2).

7. The sealed door for an industrial furnace according to claim 1, characterized in that: It also comprises a sealing strip arranged between the rear of the furnace door (2) and the outer wall of the industrial furnace.

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