Furnace door sealing structure of aluminum alloy solid solution furnace

Abstract

The utility model discloses a furnace door sealing structure of an aluminum alloy solid solution furnace, which comprises a furnace door and a furnace opening arranged on a furnace body, the furnace door is driven by a furnace door driving device arranged on the furnace body to move up and down relative to the furnace body so as to open and close the furnace opening, and a furnace door bulge is arranged on the furnace door. The furnace door protrusion extends into the furnace opening and is attached to the furnace opening in the state that the furnace opening is closed by the furnace door, and the furnace door protrusion is used for improving the sealing performance of the furnace door and the furnace opening. According to the utility model, the furnace door bulge is arranged on the furnace door and extends into the furnace mouth to be attached to the furnace mouth, so that the sealing performance between the furnace mouth and the furnace door is improved, and the problem that hot air in the furnace body leaks from the furnace mouth is reduced.

Description

Technical Field

[0001] This utility model relates to a furnace door sealing structure for an aluminum alloy solution treatment furnace, belonging to the technical field of heat treatment equipment. Background Technology

[0002] In the design process of aluminum alloy solution aging equipment, most of them are designed and manufactured according to the automated production line. In actual use, the workpiece will be heated to a temperature of 450℃-550℃ in the solution furnace. For such high-temperature equipment, furnace doors will be set at the positions where the workpieces are processed to enter and exit the equipment to isolate the high-temperature air.

[0003] The existing aluminum alloy solution furnace door structure is as follows: Figure 1 As shown, the furnace door 1 moves up and down and is directly attached to the furnace body 2. Metal lining plates 16 are installed around the furnace opening 3. To prevent the furnace door 1 from deforming due to thermal expansion and contraction, the metal lining plates 16 are usually made of thick steel plates. When the furnace is working normally, the furnace gas reaches more than 500 degrees. Due to installation accuracy issues, the gap between the furnace door 1 and the metal lining plate 16 varies in size, causing heat leakage. In addition, the heat inside the furnace is conducted to the furnace door 1 through the metal lining plate 16, which increases the deformation of the furnace door 1 after thermal expansion and contraction, widens the gap between the furnace door 1 and the metal lining plate 16, and causes serious heat leakage.

[0004] The existing aluminum alloy solution furnace door structure is prone to hot gas leakage at the joint between the furnace door 1 and the furnace body 2. As the equipment is used, the furnace door 1 often expands and contracts due to thermal changes, and the fitting precision of the furnace door 1 will become worse and worse, making the hot gas leakage more and more serious. It is necessary to shut down the machine for maintenance to reduce the hot gas leakage. Summary of the Invention

[0005] The purpose of this invention is to provide a furnace door sealing structure for an aluminum alloy solution furnace, thereby solving the technical defect in the prior art where hot gas easily leaks out of the furnace body at high temperatures.

[0006] To solve the above problems, the technical solution adopted by this utility model is: a furnace door sealing structure for an aluminum alloy solution furnace, including a furnace door and a furnace opening on the furnace body. The furnace door is driven by a furnace door drive device mounted on the furnace body to move up and down relative to the furnace body to open and close the furnace opening. A furnace door protrusion is provided on the furnace door. When the furnace door is closed, the furnace door protrusion extends into the furnace opening and fits against it, thereby improving the sealing performance between the furnace door and the furnace opening. This utility model provides a furnace door protrusion on the furnace door, which extends into the furnace opening and fits against it, improving the sealing performance between the furnace opening and the furnace door, thereby reducing the problem of hot gas leakage from the furnace opening.

[0007] As a further improvement of this utility model, a furnace door panel is fixed to the surface of the furnace body on the side for opening the furnace opening. This furnace door panel fits snugly against the furnace door when the furnace opening is closed. By providing a furnace door panel on the furnace body, the sealing performance between the furnace door and the furnace body is further improved through the fit between the furnace door panel and the furnace door, thereby further reducing the possibility of hot air leaking out of the furnace body through the furnace door.

[0008] As a further improvement of this utility model, the furnace door protrusion is a frustum-shaped protrusion, larger at one end near the furnace door and smaller at the other end away from the furnace door, and the end of the furnace opening near the furnace door is an inclined surface that mates with the furnace door protrusion. The frustum-shaped furnace door protrusion in this utility model increases the contact area between the furnace door protrusion and the furnace opening while maintaining a certain thickness, and also facilitates the furnace door protrusion extending into the furnace opening during use.

[0009] As a further improvement of this utility model, the width and height of the furnace door protrusion are smaller than the width and height of the furnace door, respectively. A sealing ring is fixed around the furnace door protrusion, and this sealing ring fits against the furnace body when the furnace door is closed. This utility model further improves the sealing performance between the furnace door and the furnace body by setting a sealing ring around the furnace door protrusion and by the fit of the sealing ring against the furnace body.

[0010] As a further improvement of this utility model, sealing sheets made of flexible material with low thermal conductivity are fixed on the mating surfaces of the furnace door protrusion and the furnace opening. When the furnace door and furnace opening are closed, the furnace door protrusion and the sealing sheet on the furnace opening are in contact. The sealing sheet on the furnace body in this utility model further improves the sealing performance between the furnace door and the furnace body. Furthermore, because the sealing sheet is made of flexible material, it ensures a tight fit between the furnace door and the furnace body when the furnace door deforms due to heat, preventing changes in the fitting precision of the furnace door and furnace body caused by thermal expansion and contraction.

[0011] As a further improvement of this invention, the sealing sheet is made of aluminum silicate fiber. The aluminum silicate fiber in this invention has a low thermal conductivity, which can reduce heat loss during use.

[0012] As a further improvement of this utility model, two upper and lower rollers are provided on both the left and right sides of the furnace door, and vertical guide rails are fixed on both the left and right sides of the furnace body. Guide grooves are vertically formed on opposite sides of the guide rails. The rollers on both sides of the furnace door are respectively positioned in the guide grooves on the guide rails on both sides of the furnace body and can roll up and down within the guide grooves. Two inclined grooves are provided on the side of the guide grooves near the furnace opening. The end of the inclined groove facing the furnace opening slopes downwards, and the distance between the two inclined grooves is equal to the distance between the two upper and lower rollers. As the rollers roll downwards to the inclined grooves, they roll into the inclined grooves and move towards the furnace opening until the furnace door protrusion moves into the furnace opening and closes the furnace opening. This utility model guides the movement of the furnace door by setting two guide rails in cooperation with the rollers, and the inclined grooves allow the furnace door to move towards the furnace opening when it descends, facilitating the furnace door protrusion to extend into the furnace opening during movement.

[0013] As a further improvement of this utility model, the furnace door drive device is a winch installed on the top of the furnace body. The winch is connected to the top of the furnace door by a wire rope or chain and is used to drive the furnace door to move up and down. This utility model drives the furnace door to move up and down by a winch, which has a simple structure and is easy to use.

[0014] As a further improvement of this utility model, a through hole is provided in the middle of the furnace door protrusion, penetrating both sides. This through hole is filled with insulating cotton, and a steel plate is installed on the side of the insulating cotton facing the furnace opening to seal the insulating cotton. This utility model improves the heat insulation performance of the furnace door by creating a through hole in the furnace door protrusion and filling it with insulating cotton.

[0015] As a further improvement of this utility model, multiple tie rods are fixed on the side of the furnace door facing the furnace opening. The tie rods pass through the insulation cotton and the steel plate, and the steel plate is fixed with matching nuts. This utility model facilitates the fixing of the steel plate by setting tie rods on the furnace door.

[0016] In summary, the beneficial effects of this utility model are: 1. The furnace door protrusion of this utility model has a sealing function. When the furnace door is closed, the flexible material of the furnace door protrusion is squeezed by the flexible material that matches the furnace opening, thus achieving a sealing function.

[0017] 2. The furnace door and furnace opening contact area are made of refractory material with extremely low thermal conductivity, which greatly reduces the heat conduction from the furnace to the furnace door panel, reduces panel deformation, and allows the furnace door seal to better fit the furnace opening, thus enhancing the sealing effect.

[0018] 3. The use of an embedded furnace door made of flexible materials compensates for heat leakage caused by insufficient installation precision during furnace door use. Furthermore, the sealing surfaces are made of materials with extremely low thermal conductivity, significantly reducing heat transfer from the furnace interior to the furnace opening. This invention not only reduces maintenance costs and equipment downtime, increasing equipment utilization, but also saves energy and improves production automation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the furnace door structure of an existing aluminum alloy solution treatment furnace.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model with the furnace door open.

[0021] Figure 3 This is a schematic diagram of the structure of this utility model in the closed state of the furnace door.

[0022] The components include: 1. Furnace door; 2. Furnace body; 3. Furnace opening; 4. Furnace door drive device; 5. Furnace door protrusion; 6. Furnace door panel; 7. Sealing ring; 8. Roller; 9. Guide rail; 10. Guide groove; 11. Inclined groove; 12. Insulation cotton; 13. Steel plate; 14. Tie rod; 15. Nut; 16. Metal lining plate. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] like Figure 2 and Figure 3 The furnace door sealing structure of the aluminum alloy solution treatment furnace shown includes a furnace door 1 and a furnace opening 3 on the furnace body 2. The furnace door has a rectangular longitudinal section, and the furnace opening 3 is rectangular in shape. The furnace door 1 is driven by a furnace door drive device 4 mounted on the furnace body 2 to move up and down relative to the furnace body 2. The up and down movement of the furnace door 1 is used to open or close the furnace opening 3. In this invention, the furnace door 3 moves upward to open the furnace opening 3. When the furnace opening 3 is open, the workpiece to be processed can be sent into the furnace body 2, and the workpiece after heat treatment can be taken out from the furnace opening 3. When the furnace door 1 moves downward, it can close the furnace opening 3. In this invention, a furnace door protrusion 5 is provided on the furnace door 1. When the furnace door 1 is closed, the furnace door protrusion 5 extends into the furnace opening 3 and fits against the furnace opening 3 to improve the sealing performance of the furnace door 1 and the furnace opening 3, preventing high-temperature gas in the furnace body 2 from escaping from the furnace opening. Both the furnace door protrusion 5 and the furnace opening 3 in this invention are made of flexible material.

[0025] like Figure 2 and Figure 3As shown, this utility model has a furnace door panel 6 fixed on the surface of the furnace body 2 on the side for opening the furnace opening 3. The furnace door panel 6 is made of thin steel plate and fits against the furnace door 1 when the furnace opening 3 is closed. In this utility model, the width and height of the furnace door protrusion 5 are smaller than the width and height of the furnace door 1, respectively. A sealing ring 7 is fixed around the furnace door protrusion 5 on the furnace door 1. The sealing ring 7 has a rectangular structure and fits against the furnace body 2 when the furnace opening 3 is closed, further improving the sealing performance between the furnace door 1 and the furnace body 2. Since the furnace door panel 6 is fixed on the furnace body 2, the sealing ring 7 in this utility model actually achieves sealing with the furnace body 2 by fitting against the furnace door panel 6 during use.

[0026] like Figure 2 and Figure 3 As shown, the furnace door protrusion 5 is a frustum-shaped structure, larger at one end near the furnace door 1 and smaller at the other. The furnace opening 3 has an inclined surface near the furnace door 1 that mates with the furnace door protrusion 5. Sealing sheets (not shown in the figure) made of a flexible material with low thermal conductivity are fixed to the mating surfaces of both the furnace door protrusion 5 and the furnace opening 3. When the furnace door 1 is closed and the furnace opening 3 is closed, the furnace door protrusion 5 and the sealing sheet on the furnace opening 3 are in contact. The sealing ring 7 and the sealing sheet in this invention are made of aluminum silicate fiber. The flexible material of both the furnace door protrusion 5 and the furnace opening 3 in this invention can be made of aluminum silicate fiber.

[0027] like Figure 2 and Figure 3 As shown, two rollers 8 are provided on the left and right sides of the furnace door 1, and vertical guide rails 9 are fixed on the left and right sides of the furnace body 2. The guide rails 9 are welded to the furnace body 2. The two guide rails 9 are located on the left and right sides of the furnace opening 3, respectively. A guide groove 10 is provided on the opposite side of the two guide rails 9 in the vertical direction. The rollers 8 on both sides of the furnace door 1 are respectively set in the guide grooves 10 on the guide rails 9 on both sides of the furnace body 2, and can roll up and down in the guide grooves 10. Two inclined grooves 11 are provided on the side of the guide groove 10 near the furnace opening 3. The inclined groove 11 is inclined downward at the end facing the furnace opening 3. The upper end of the inclined groove 11 is connected to the guide groove 10, and the distance between the two inclined grooves 11 is equal to the distance between the two rollers 8. The rollers 8 roll down to the inclined groove 11 and roll into the inclined groove 11 and move towards the furnace opening 3 until the furnace door protrusion 5 moves into the furnace opening 3 and closes the furnace opening 3.

[0028] like Figure 2 and Figure 3 As shown, the furnace door drive device 4 in this utility model is a winch installed on the top of the furnace body 2. The winch is connected to the top of the furnace door 1 by a wire rope or chain (not shown in the figure) to drive the furnace door 1 to move up and down.

[0029] like Figure 2 and Figure 3 As shown, this utility model has a through hole in the middle of the furnace door protrusion 5, which extends through both sides. The through hole is filled with insulation cotton 12, and a steel plate 13 is provided on the side of the insulation cotton 12 facing the furnace opening 3. The steel plate 13 and the furnace door 1 are used to seal the insulation cotton 12 from both sides. To facilitate the fixing of the steel plate 13, this utility model has multiple tie rods 14 welded and fixed on the side of the furnace door 1 facing the furnace opening 3. The tie rods 14 pass through the insulation cotton 12 and the steel plate 13, and are fixed with nuts 15 that cooperate with them. This utility model has a nut 15 on each side of the steel plate 13 on the tie rod 14. The two nuts 15 clamp the steel plate 13 on the tie rod 14. Optimally, this utility model has a washer on each side of the steel plate 13 to separate the steel plate 13 from the nuts 15.

[0030] Unless otherwise specified in the above description, all parts are prior art, or can be implemented using existing technology. Furthermore, the specific embodiments described in this utility model are merely preferred embodiments and are not intended to limit the scope of this utility model. That is, all equivalent changes and modifications made to the content of the claims of this utility model should be considered within the technical scope of this utility model.

Claims

1. A furnace door sealing structure for an aluminum alloy solution treatment furnace, comprising a furnace door and a furnace opening formed on the furnace body, wherein the furnace door is driven by a furnace door drive device disposed on the furnace body to move up and down relative to the furnace body for opening and closing the furnace opening, characterized in that: The furnace door is provided with a furnace door protrusion. When the furnace door is closed, the furnace door protrusion extends into the furnace opening and fits against the furnace opening to improve the sealing performance between the furnace door and the furnace opening. The width and height of the furnace door protrusion are smaller than the width and height of the furnace door, respectively. A sealing ring is fixed around the furnace door protrusion. The sealing ring fits into the furnace body when the furnace door is closed. Sealing sheets made of flexible material with low thermal conductivity are fixed on the surfaces of the furnace door protrusion and the furnace opening. When the furnace door and furnace opening are closed, the furnace door protrusion and the sealing sheet on the furnace opening are in contact.

2. The furnace door sealing structure of the aluminum alloy solution treatment furnace according to claim 1, characterized in that: A furnace door panel is fixed to the surface of the furnace body on the side where the furnace opening is to be opened. The furnace door panel fits against the furnace door when the furnace opening is closed.

3. The furnace door sealing structure of the aluminum alloy solution treatment furnace according to claim 1, characterized in that: The furnace door protrusion is a frustum-shaped structure, larger at one end near the furnace door and smaller at the other. The furnace opening at the end near the furnace door is an inclined surface that matches the furnace door protrusion.

4. The furnace door sealing structure of the aluminum alloy solution treatment furnace according to claim 1, characterized in that: The sealing sheet is made of aluminum silicate fiber.

5. The furnace door sealing structure of the aluminum alloy solution treatment furnace according to claim 1, characterized in that: The furnace door is equipped with two rollers on both the left and right sides. Vertical guide rails are fixed on both the left and right sides of the furnace body. Guide grooves are opened vertically on the opposite side of the guide rails. The rollers on both sides of the furnace door are respectively set in the guide grooves on the guide rails on both sides of the furnace body and can roll up and down in the guide grooves. Two inclined grooves are set on the side of the guide grooves near the furnace opening. The end of the inclined grooves facing the furnace opening is inclined downward, and the distance between the two inclined grooves is equal to the distance between the two rollers. The rollers roll downward to the inclined grooves and roll into the inclined grooves and move towards the furnace opening until the furnace door protrudes and moves into the furnace opening to close the furnace opening.

6. The furnace door sealing structure of the aluminum alloy solution treatment furnace according to claim 1, characterized in that: The furnace door drive device is a winch installed on the top of the furnace body. The winch is connected to the top of the furnace door by a wire rope or chain and is used to drive the furnace door to move up and down.

7. The furnace door sealing structure of the aluminum alloy solution treatment furnace according to claim 1, characterized in that: The furnace door has a through hole in the middle of the protrusion, which runs through both sides. The through hole is filled with insulation cotton, and a steel plate is installed on the side of the insulation cotton facing the furnace opening to seal the insulation cotton.

8. The furnace door sealing structure of the aluminum alloy solution treatment furnace according to claim 7, characterized in that: Several tie rods are fixed on the side of the furnace door facing the furnace opening. The tie rods pass through the insulation cotton and steel plate, and the steel plate is fixed with nuts that match them.

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