A resealable heat-treatment oven door

Abstract

The utility model belongs to heat treatment furnace technical field especially, it is a kind of heat treatment furnace door of correctable sealing, including bolt hole being arranged in the edge of furnace door one round, and along the sealing adjustable device being arranged in the edge of furnace door one round of bolt hole;Sealing adjustable device includes the installation portion, connecting portion, extension portion connected in proper order, and the installation portion and extension portion are perpendicular with connecting portion respectively;Strip-shaped through-hole corresponding with bolt hole is set up on installation portion, the direction of this strip-shaped through-hole is perpendicular to the board surface of furnace door, and strip-shaped through-hole is fixed with bolt hole by bolt, and furnace door is sealed by extension portion and heat treatment furnace door frame contact.This utility model can be aimed at the furnace door deformation under long-term high temperature environment, adopt sealing adjustable device to carry out front and rear position adjustment, to make up the gap (warping deformation and arc-shaped gap) generated by furnace door deformation, ensure that furnace door and furnace door frame closely adhere, its operation is simple, and adjustment is quick.

Description

Technical Field

[0001] This utility model belongs to the field of heat treatment furnace technology, and in particular to a heat treatment furnace door with a correctable seal. Background Technology

[0002] Oxidation-free heat treatment furnaces are mainly used for the normalizing, quenching, and tempering processes of steel plates. Due to the deformation of the furnace door caused by prolonged high-temperature baking, abnormal changes in the atmosphere inside the furnace occur. Oxidation-free heat treatment furnaces have strict requirements for furnace door sealing. If the oxygen content inside the furnace exceeds 500ppm, it will easily cause oxidation of the steel structure inside the furnace and nodules on the surface of the roller conveyor, affecting the service life of the steel structure inside the furnace and the quality of the lower surface of the steel plate.

[0003] Traditionally, the method to address oven door deformation during baking involves manually hammering the deformed area for adjustment. This is time-consuming, labor-intensive, and involves prolonged work at height, increasing the risk of accidents. Utility Model Content

[0004] The purpose of this invention is to solve the problem of time-consuming and labor-intensive manual adjustment of deformation furnace doors in the existing technology, and to propose a heat treatment furnace door with a correctable seal.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A correctable seal heat treatment furnace door includes bolt holes arranged around the edge of the furnace door, and adjustable sealing devices arranged around the edge of the furnace door along the bolt holes, with a plurality of consecutive adjustable sealing devices attached side by side to the heat treatment furnace door frame seal. The adjustable sealing device includes a mounting part, a connecting part, and an extension part connected in sequence. The mounting part, the connecting part, and the extension part are all strip-shaped plate structures, and the mounting part and the extension part are perpendicular to the connecting part, respectively. The mounting section has a strip-shaped through hole corresponding to the bolt hole. The direction of the strip-shaped through hole is perpendicular to the surface of the furnace door. The strip-shaped through hole is fixed to the bolt hole by bolts. The furnace door is sealed by contacting the heat treatment furnace door frame through an extension.

[0006] As a further preferred embodiment, the area between the connecting part and the extension part is a flexible component installation area, and the flexible component installation area is provided with a sealing strip, which contacts and seals with the heat treatment furnace door frame.

[0007] As a further preferred option, the sealing strip is a frame-shaped structure corresponding to the size of the heat treatment furnace door frame, and the frame-shaped sealing strip is installed in the flexible part installation area of ​​the continuous adjustable sealing device.

[0008] As a further preferred option, the mounting part and the connecting part have reinforcing ribs.

[0009] As a further preferred option, the width of the adjustable sealing device is 1 / 10 to 1 / 20 of the length in the direction of the furnace door panel.

[0010] As a further preferred option, the adjustable sealing device is made of ductile iron.

[0011] This invention addresses the issue of furnace door deformation under prolonged high-temperature environments by employing a sealed adjustable device for front-to-back position adjustment. This compensates for gaps (warping deformation and arc-shaped gaps) caused by furnace door deformation, ensuring a tight fit between the furnace door and the furnace door frame. The operation is simple and the adjustment is quick, ensuring that the oxygen content inside the furnace meets the standards and fulfills the production process requirements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall installation structure of this utility model; Figure 2 This is a schematic diagram of the structure of the adjustable sealing device. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] The present invention provides a correctable sealing heat treatment furnace door, including bolt holes 2 arranged around the edge of the furnace door 1, and sealing adjustable devices 3 arranged around the edge of the furnace door 1 along the bolt holes 2. Multiple sealing adjustable devices 3 are attached side by side to the heat treatment furnace door frame for sealing, and two adjacent sealing adjustable devices 3 are in close contact. like Figure 1 As shown, the furnace door 1 is a hanging type that moves up and down to open and close the heating furnace. It moves up and down along the lifting guide wheel. When the furnace door 1 closes the heating furnace, the furnace door 1 is pressed onto the furnace door frame by the furnace door pressing device. The furnace door 1 is provided with a continuous sealing adjustable device 3 around its upper, lower, left and right edges. The sealing adjustable device 3 is not shown on the left and right sides in the figure.

[0015] like Figure 2 As shown, the adjustable sealing device 3 includes a mounting part 31, a connecting part 32, and an extension part 33 connected in sequence. The mounting part 31, the connecting part 32, and the extension part 33 are all strip-shaped plate structures with the same length. The mounting part 31 and the extension part 33 are perpendicular to the connecting part 32, and the cross section of the structure formed by the three is similar to a "Z". It is mainly arranged towards the furnace door frame through the extension part 33. The mounting part 31 has a strip-shaped through hole 34 corresponding to the bolt hole 2. The direction of the strip-shaped through hole 34 is perpendicular to the surface of the furnace door 1. The strip-shaped through hole 34 is fixed to the bolt hole 2 by bolts. The furnace door 1 is sealed by contact with the heat treatment furnace door frame through the extension part 33. This allows a certain sealing adjustable device 3 to move back and forth relative to the furnace door frame. After a gap appears in the furnace door 1, the forward movement of the sealing adjustable device 3 is adjusted, and then the bolts are fixed. The sealing adjustable device 3 covers the gap and continues to achieve the sealing effect.

[0016] As an example, the area between the connecting part 32 and the extension part 33 is a flexible component installation area, which is used to install sealing material, improve the fit with the furnace door frame, and enhance the sealing effect.

[0017] Preferably, the flexible component installation area is provided with a sealing strip 4, which contacts and seals against the heat treatment furnace door frame. Figure 1 As can be seen, the sealing strip 4 is installed in front of the extension 33 in a protruding manner, replacing the extension 33 in contact with the furnace door frame for sealing.

[0018] Since the sealing strip 4 is arranged along the furnace door frame, it can be segmented or continuous, and a continuous sealing strip 4 is more conducive to the sealing effect; that is, the sealing strip 4 used in this utility model is a frame structure corresponding to the size of the heat treatment furnace door frame, and the frame structure sealing strip 4 is installed in the flexible part installation area of ​​the continuous adjustable sealing device 3.

[0019] Furthermore, a reinforcing rib 35 is provided between the mounting part 31 and the connecting part 32, which enhances the rigidity of the entire adjustable sealing device 3.

[0020] To ensure more targeted sealing of the gap between the furnace door 1 and the furnace door frame by the adjustable sealing device 3, multiple adjustable sealing devices 3 of different sizes can be used on a single furnace door 1. Generally, the width of the adjustable sealing device 3 is 1 / 10 to 1 / 20 of the length of the furnace door 1 in the panel direction. That is, the width of the entire adjustable sealing device 3 is the length of the mounting part 31, the connecting part 32, and the extension part 33. The width of the adjustable sealing device 3 has different dimensions. During installation, a wide or narrow adjustable sealing device 3 is selected according to the length of the furnace door 1 in the panel direction (i.e., the four sides of the furnace door). The specific width of the adjustable device 3 is based on the ratio of the width to the length of the furnace door 1 in the panel direction. A wider adjustable sealing device 3 is more convenient for sealing and adjusting larger gaps, while a narrower adjustable sealing device 3 is more convenient for sealing and adjusting smaller gaps.

[0021] The adjustable sealing device 3 is made of ductile iron to ensure that the deformation does not exceed the standard after high temperature.

[0022] This utility model improves the furnace door sealing structure by changing the original fixed seal to an adjustable seal structure. The seal is adjusted according to the deformation of the furnace door, ensuring that the furnace door remains tightly sealed to the furnace door frame after deformation. This ensures that the oxygen content inside the furnace meets the standards and production process requirements.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat treatment furnace door with a correctable seal, characterized in that: Includes bolt holes (2) arranged around the edge of the furnace door (1), and adjustable sealing devices (3) arranged around the edge of the furnace door (1) along the bolt holes (2), with multiple adjustable sealing devices (3) attached side by side to the heat treatment furnace door frame seal. The adjustable sealing device (3) includes a mounting part (31), a connecting part (32), and an extension part (33) connected in sequence. The mounting part (31), the connecting part (32), and the extension part (33) are all strip-shaped plate structures. The mounting part (31) and the extension part (33) are perpendicular to the connecting part (32). The mounting part (31) is provided with a strip-shaped through hole (34) corresponding to the bolt hole (2). The direction of the strip-shaped through hole (34) is perpendicular to the plate surface of the furnace door (1). The strip-shaped through hole (34) is fixed to the bolt hole (2) by bolts. The furnace door (1) is sealed to the heat treatment furnace door frame through the extension (33).

2. The correctable seal heat treatment furnace door according to claim 1, characterized in that: The area between the connecting part (32) and the extension part (33) is the flexible component installation area. The flexible component installation area is provided with a sealing strip (4), which contacts and seals with the heat treatment furnace door frame.

3. The correctable seal heat treatment furnace door according to claim 2, characterized in that: The sealing strip (4) is a frame structure corresponding to the size of the heat treatment furnace door frame. The frame structure sealing strip (4) is installed in the flexible part installation area of ​​the continuous adjustable sealing device (3).

4. A correctable seal heat treatment furnace door according to claim 1 or 3, characterized in that: The mounting part (31) and the connecting part (32) have a reinforcing rib (35).

5. A correctable seal heat treatment furnace door according to claim 1 or 3, characterized in that: The width of the adjustable sealing device (3) is 1 / 10 to 1 / 20 of the length of the furnace door (1) in the panel direction.

6. A correctable seal heat treatment furnace door according to claim 1, characterized in that: The adjustable sealing device (3) is made of ductile iron.

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