Door frame of heat treatment furnace

Abstract

The utility model provides a thermal treatment furnace door frame, which comprises a frame, a heat insulation structure and a reinforcing assembly used for reinforcing the frame, the reinforcing assembly is arranged on the outer wall of the frame, the heat insulation structure is arranged on the frame, and the reinforcing assembly comprises a plurality of reinforcing units arranged along the perimeter direction of the frame. The reinforcing units are cast iron blocks and are high in heat resistance and small in deformation in the high-temperature environment, heat insulation cotton is arranged between the reinforcing assemblies and the furnace door frame, the high-temperature resistance of the furnace door frame can be further improved, the situation that the furnace door frame is heated to deform is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of heat treatment technology, and in particular to a heat treatment furnace door frame. Background Art

[0002] A heat treatment furnace is a device used to heat metal materials. During the operation of the heat treatment furnace, the door frame of the heat treatment furnace needs to be opened and closed many times. In the existing technology, heat treatment furnaces usually use water-cooled door frames. This type of door frame has low heat resistance and is prone to deformation, resulting in the door frame being unable to open and close. This type of door frame is inconvenient to maintain and has low production efficiency. Utility Model Content

[0003] The utility model provides a heat treatment furnace door frame, which solves the problems in the prior art that the heat treatment furnace door frame has low heat resistance and is easily deformed.

[0004] To achieve the above-mentioned objectives, the utility model provides a heat treatment furnace door frame, comprising a frame, an insulation structure and a reinforcement component for reinforcing the frame, the reinforcement component being installed on the outer wall of the frame, the insulation structure being arranged on the frame, and the reinforcement component comprising a plurality of reinforcement units arranged along the circumference direction of the frame.

[0005] In one embodiment, the reinforcement unit is a cast iron plate, the cast iron plate is provided with first bolt holes for bolts to pass through, the frame is provided with second bolt holes arranged in a one-to-one correspondence with the first bolt holes, and the cast iron plate is connected to the frame by bolts passing through the first bolt holes and the second bolt holes;

[0006] In one embodiment, each of the cast iron plates is provided with four first bolt holes, wherein two first bolt holes form a group, and the two first bolt holes in each group are spaced apart in the vertical direction.

[0007] In one embodiment, the cast iron plate further has a first concave plane and a second concave plane, wherein the first concave plane is arranged between the two groups of the first bolt holes on the cast iron plate, and the second concave plane is arranged on the other side of the first bolt hole opposite to the first concave plane.

[0008] In one embodiment, the arrangement direction of the plurality of cast iron plates intersects with the arrangement direction of the first bolt holes.

[0009] In one embodiment, the cast iron plate is connected to the frame by bolts, and the side of the cast iron plate having the first concave plane abuts against the frame.

[0010] In one embodiment, the side of the cast iron plate having the first bolt hole is arranged toward the outside of the frame.

[0011] In one embodiment, the thermal insulation structure includes refractory wool and rivets, and the number of the rivets is multiple and installed on the refractory wool.

[0012] In one embodiment, the refractory wool is laid on the frame and arranged between the reinforcement component and the frame, and the installation position of the refractory wool corresponds to the reinforcement component.

[0013] In one embodiment, the frame further has expansion joints at positions corresponding to the plurality of cast iron plates, for accommodating dimensional changes caused by thermal expansion and contraction of the cast iron plates.

[0014] In the embodiment of the present application, a heat treatment furnace door frame with a reinforcement component is adopted. The reinforcement component is composed of multiple reinforcement units. The reinforcement unit is a cast iron block with high heat resistance and small deformation in a high temperature environment. There is heat insulation cotton between the reinforcement component and the frame of the furnace door frame, which can further improve the high temperature resistance of the furnace door frame, reduce the deformation of the furnace door frame due to heat, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the assembly of a heat treatment furnace door frame in one embodiment of the present invention, in which the heat insulation cotton is not shown;

[0017] Figure 2 for Figure 1 Cross-section at AA;

[0018] Figure 3 This is a schematic diagram of a frame in one embodiment of the present utility model;

[0019] Figure 4 A schematic diagram of a cast iron part in one embodiment of the present invention;

[0020] Figure 5 for Figure 4 Cross-section at BB.

[0021] Description of the drawings: 1. Frame; 11. Expansion joint; 2. Thermal insulation structure; 21. Thermal insulation cotton; 22. Rivet; 3. Reinforcement assembly; 31. Cast iron plate; 311. First bolt hole; 312. Second bolt hole; 313. First concave plane; 314. Second concave plane. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Moreover, the technical solutions between the various embodiments of the present invention can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] When numerical ranges are given in the examples, it should be understood that, unless otherwise specified herein, both endpoints of each numerical range and any value between the endpoints may be used. Unless otherwise defined, all technical and scientific terms used in this utility model are consistent with the prior art as understood by those skilled in the art and the description of this utility model. Any prior art methods, equipment, and materials similar or equivalent to those described in the examples of this utility model may also be used to implement this utility model.

[0025] In the prior art, heat treatment furnaces require frequent opening and closing of their door frames during operation. Typically, these furnaces utilize water-cooled door frames, which have low heat resistance and are prone to deformation during heating, resulting in the door not opening and closing properly. Furthermore, water-cooled door frames are prone to desoldering and rusting, requiring frequent replacements. Each replacement requires downtime, resulting in high maintenance costs.

[0026] The utility model provides a heat treatment furnace door frame, comprising a frame, a heat insulation structure and a reinforcement component for reinforcing the frame, the reinforcement component is installed on the outer wall of the frame, the heat insulation structure is arranged on the frame, and the reinforcement component includes a plurality of reinforcement units arranged along the circumference direction of the frame.

[0027] In the embodiments of this application, please refer to Figures 1 to 5 The heat treatment furnace door frame features a reinforcement assembly and thermal insulation structure. The reinforcement assembly is mounted on the outer wall of the frame, while the thermal insulation structure provides insulation against the high temperatures within the furnace cavity. This reinforces the heat treatment furnace door frame, improving its high-temperature resistance, reducing thermal deformation, and increasing production efficiency. The reinforcement assembly is composed of multiple reinforcement units arranged around the frame, making it easier to install and remove, reducing equipment maintenance costs.

[0028] In one embodiment, please refer to Figures 4 and 5The reinforcement unit is a cast iron plate, the cast iron plate is provided with a first bolt hole for the bolt to pass through, the frame is provided with a second bolt hole arranged one-to-one corresponding to the first bolt hole, and the cast iron plate is connected to the frame by bolts passing through the first bolt hole and the second bolt hole;

[0029] It needs to be explained that the first bolt hole and the second bolt hole correspond one to one, wherein the first bolt hole is a through hole passing through the cast iron plate, and the second bolt hole is a countersunk hole, that is, a stepped hole that accommodates the bolt head sinking into the cast iron part, wherein the diameter of the first bolt hole is smaller than the diameter of the second bolt hole.

[0030] In the embodiment of the present application, the reinforcement unit is a cast iron plate. Cast iron has strong heat resistance and is less deformed in high-temperature environments. Using cast iron as the reinforcement unit can reduce deformation of the furnace door frame during operation, allowing the furnace door to open and close normally. Cast iron has a long service life and is relatively low in cost, which can reduce production costs and improve production efficiency.

[0031] It should be noted that the connection method between the cast iron plate and the frame is not limited to bolt connection, and illustratively, welding can also be used.

[0032] In one embodiment, please refer to Figures 4 and 5 Each cast iron plate is provided with four first bolt holes, wherein every two first bolt holes form a group, and the two first bolt holes in each group are arranged at intervals in the vertical direction.

[0033] It should be explained that each cast iron plate has two groups of first bolt holes, and the two groups of first bolt holes are respectively arranged on both sides of the cast iron plate.

[0034] In an embodiment of the present application, first bolt holes are opened on the cast iron plate, and every two first bolt holes form a group. The two first bolt holes in each group are arranged at intervals in the vertical direction. This can make the cast iron plate more evenly stressed during assembly and can be assembled more firmly on the frame.

[0035] It should be noted that the arrangement of the first bolt holes is not limited to the above-mentioned one. For example, they may also be arranged in a direction intersecting the vertical direction.

[0036] In one embodiment, please refer to Figures 4 and 5 The cast iron plate also has a first concave plane and a second concave plane. The first concave plane is arranged between the two groups of first bolt holes on the cast iron plate, and the second concave plane is arranged on the other side of the first bolt hole opposite to the first concave plane.

[0037] In one embodiment, the cast iron plate is connected to the frame by bolts, and the side of the cast iron plate having the first concave plane abuts against the frame.

[0038] It should be explained that the first concave surface and the second concave surface have the same depth and are both recessed surfaces in the cast iron plate, separated by the first bolt hole. During assembly, both the frame and the cast iron plate are affected by the high temperature and deform. If the cast iron plate is completely in contact with the side wall of the frame, the thermal expansion and contraction of the two will significantly affect the security of the assembly.

[0039] In the embodiment of the present application, a first concave plane and a second concave plane are provided on the cast iron plate, and the cast iron plate is assembled on the frame, with one side having the first concave plane and the second concave plane abutting against the frame. This can reduce the deformation influence on the cast iron plate and the frame during assembly, make the connection between the cast iron plate and the frame more firm, and improve the service life of the product.

[0040] In one embodiment, please refer to Figures 1 to 5 The arrangement direction of the plurality of cast iron plates is arranged to intersect with the arrangement direction of the first bolt holes.

[0041] It should be explained that the first bolt holes are arranged in a vertical direction, and the plurality of cast iron plates are arranged transversely in a direction intersecting the vertical direction.

[0042] In the embodiment of the present application, the arrangement direction of the plurality of cast iron plates is cross-arranged with the arrangement direction of the first bolt holes, which can facilitate the disassembly and assembly of the cast iron plates.

[0043] It should be noted that the arrangement of the cast iron plates is not limited to the above-mentioned one. For example, the cast iron plates may also be arranged along the direction aligned with the first bolt holes.

[0044] In one embodiment, please refer to Figures 1 to 2 , the side of the cast iron plate having the first bolt hole is arranged toward the outside of the frame.

[0045] In the embodiment of the present application, the side of the cast iron plate having the first bolt hole is arranged toward the outside of the frame, which can improve the stress condition of the frame and enable the cast iron plate to be more firmly assembled on the frame.

[0046] It should be noted that the assembly method of the cast iron plates is not limited to the one described above. For example, the cast iron plates can also be assembled on the frame in a vertical direction.

[0047] In one embodiment, please refer to Figure 2 The thermal insulation structure includes refractory wool and rivets, and the number of rivets is multiple and is installed on the refractory wool.

[0048] It needs to be explained that refractory wool is a material with strong fire resistance and is relatively soft. It can be cut and bent as needed to adapt to requirements of different shapes and sizes.

[0049] In the embodiment of the present application, refractory wool is used for insulation and is installed by rivets, which can reduce the cost of the insulation structure and facilitate installation and replacement.

[0050] It should be noted that the thermal insulation structure is not limited to the one mentioned above. For example, the thermal insulation structure may also be made of materials such as ceramic fibers.

[0051] In one embodiment, please refer to Figure 2 The refractory wool is laid on the frame and arranged between the reinforcement component and the frame. The installation position of the refractory wool corresponds to the reinforcement component.

[0052] In an embodiment of the present application, refractory wool is arranged on the frame, between the frame and the reinforcement component, and the installation position of the refractory wool corresponds to that of the reinforcement component. This can consume less refractory wool to more efficiently improve the fire resistance performance and further reduce the thermal deformation of the reinforcement component.

[0053] In one embodiment, please refer to Figure 3 The frame is also provided with expansion joints at positions corresponding to the multiple cast iron plates to accommodate the dimensional changes caused by thermal expansion and contraction of the cast iron plates.

[0054] In the embodiment of the present application, expansion joints are provided corresponding to the positions where the cast iron plates are installed on the frame, so that the cast iron parts can adapt to thermal expansion and contraction, reduce the possibility of cracking of the cast iron parts and the frame due to thermal deformation, maintain dimensional stability, and reduce stress concentration, making the disassembly and assembly of the cast iron parts more convenient.

[0055] The above technical solutions of the present invention are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heat treatment furnace door frame, characterized in that: It includes a frame, an insulation structure and a reinforcement component for reinforcing the frame. The reinforcement component is installed on the outer wall of the frame. The insulation structure is arranged on the frame. The reinforcement component includes a plurality of reinforcement units arranged along the circumference of the frame.

2. The heat treatment furnace door frame according to claim 1, characterized in that: The reinforcement unit is a cast iron plate, which is provided with a first bolt hole for bolts to pass through. The frame is provided with second bolt holes arranged in a one-to-one correspondence with the first bolt holes. The cast iron plate is connected to the frame by bolts passing through the first bolt holes and the second bolt holes.

3. The heat treatment furnace door frame according to claim 2, characterized in that: Each of the cast iron plates is provided with four first bolt holes, wherein every two first bolt holes form a group, and the two first bolt holes in each group are arranged at intervals in the vertical direction.

4. The heat treatment furnace door frame according to claim 2, characterized in that: The cast iron plate further has a first concave plane and a second concave plane, wherein the first concave plane is arranged between the two groups of the first bolt holes on the cast iron plate, and the second concave plane is arranged on the other side of the first bolt holes opposite to the first concave plane.

5. The heat treatment furnace door frame according to claim 4, characterized in that: The direction in which the plurality of cast iron plates are arranged intersects with the direction in which the first bolt holes are arranged.

6. The heat treatment furnace door frame according to claim 4, characterized in that: The cast iron plate is connected to the frame via bolts, and a side of the cast iron plate having a first concave plane abuts against the frame.

7. The heat treatment furnace door frame according to claim 6, characterized in that: The side of the cast iron plate having the first bolt hole is arranged toward the outside of the frame.

8. The heat treatment furnace door frame according to claim 1, characterized in that: The heat insulation structure includes fire-resistant wool and rivets, and the number of the rivets is multiple and installed on the fire-resistant wool.

9. The heat treatment furnace door frame according to claim 8, characterized in that: The refractory wool is laid on the frame and arranged between the reinforcement component and the frame. The installation position of the refractory wool corresponds to the reinforcement component.

10. The heat treatment furnace door frame according to claim 2, characterized in that: The frame is also provided with expansion joints at positions corresponding to the plurality of cast iron plates, for accommodating dimensional changes caused by thermal expansion and contraction of the cast iron plates.

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