A sealing structure of a glass toughening furnace

Abstract

The utility model relates to a kind of sealing structure of glass toughening furnace in the technical field of glass toughening furnace, including furnace body, the side wall of furnace body is equipped with access hole, the outside of access hole is equipped with access door, and sealing cooperation structure is equipped between access door and access hole, and the sealing cooperation structure includes: fixed frame, inlay in the inside of access hole, and its outer end peripheral side is equipped with radial extension, and the fixed frame inner cavity is conical;Fixed cover, its outer edge portion is detachably installed in the outside wall of furnace body, inner edge portion is pressed together in the radial extension;Conical sealing block, detachably installed in the inner surface of access door, with the opening and closing action of access door, insert or exit the fixed frame inner cavity;The utility model uses conical sealing block and the fixed frame of conical inner cavity to cooperate with each other, utilizes the self-tightening characteristics of conical surface sealing, can realize automatic centering and the effect of more pressure more tight in access door closing process, to form high-reliability main sealing structure.

Description

Technical Field

[0001] This utility model relates to the field of glass tempering furnace technology, and in particular to a sealing structure for a glass tempering furnace. Background Technology

[0002] A glass tempering furnace uses physical or chemical methods to form a compressive stress layer on the glass surface and a tensile stress layer inside. When the glass is subjected to external forces, the compressive stress layer can offset some of the tensile stress, preventing the glass from breaking and thus increasing its strength. During the heat treatment of tempered glass, the tempering furnace generates extremely high temperatures, therefore requiring a very strict seal. However, because glass is prone to accidental breakage during tempering, regular or irregular inspection and cleaning of the furnace are necessary.

[0003] The sealing structure of existing glass tempering furnace access doors is generally fixed within the access door or the furnace body. With repeated opening and closing, the sealing structure gradually wears down, affecting the actual sealing effect. Furthermore, the fixed sealing structure cannot be flexibly disassembled for repair or replacement.

[0004] To address this, we designed a sealing structure for a glass tempering furnace. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a sealing structure for a glass tempering furnace.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A sealing structure for a glass tempering furnace includes a furnace body, an inspection port on the side wall of the furnace body, an inspection door on the outer side of the inspection port, and a sealing fit structure between the inspection door and the inspection port. The sealing fit structure includes: A fixing frame is embedded inside the inspection port, and its outer circumference is provided with a radial extension. The inner cavity of the fixing frame is conical. A fixed cover, the outer edge of which is detachably mounted to the outer side wall of the furnace body, and the inner edge of which is pressed against the radial extension; A conical sealing block is detachably installed on the inner surface of the inspection door and is inserted into or removed from the inner cavity of the fixed frame as the inspection door opens and closes.

[0007] Furthermore, the outer side of the conical sealing block is provided with a connecting plate, and the outer surface of the connecting plate is provided with a plurality of outwardly extending screws, which pass through the inspection door and are locked by nuts.

[0008] Furthermore, a flexible sealing ring is provided on the outer edge of the inner plate of the connecting plate, and the flexible sealing ring is pressed between the inner plate of the connecting plate and the outer end face of the fixing frame.

[0009] Furthermore, a fixing member is provided on the outside of the inspection door, the screw passes through the fixing member, and nuts are screwed on both sides of it. By adjusting the nuts, the screw and the conical sealing block are moved to compensate for the wear of the conical sealing block.

[0010] Furthermore, one side of the inspection door is pivotally connected to the fixed cover, and the outer surface of the other side is provided with a door handle.

[0011] Furthermore, the inspection port is sealed to the fixed frame by a layer of refractory mud.

[0012] Furthermore, the outer contour of the fixed frame is tapered, and its inner end is a small end.

[0013] Furthermore, the outer contour taper of the fixed frame is smaller than its inner contour taper.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The conical sealing block and the fixed frame of the conical inner cavity cooperate with each other, utilizing the self-tightening characteristics of the conical surface seal. During the closing of the maintenance door, automatic centering and the effect of increasing pressure are achieved, thus forming a highly reliable main sealing structure. Together with the auxiliary seal formed by the flexible sealing ring, they form a double sealing barrier, which greatly improves the overall sealing reliability under high temperature conditions, effectively prevents heat leakage, and ensures the stability of the temperature field inside the furnace. 2. The position of the conical sealing block on the access door can be easily adjusted via the screw and nut adjustment mechanism. When the sealing block wears down due to long-term use, there is no need to replace the entire door or the sealing components; simply tightening the nut will push the sealing block forward to compensate for the wear and restore the original sealing pressure. This greatly extends the overall service life of the sealing structure and the access door, and reduces the risk of production interruption due to seal failure. 3. The conical sealing block, connecting plate, and flexible sealing ring are installed on the inspection door as a whole using screws and nuts, making them highly removable. When maintenance or replacement is needed, the entire sealing module can be removed simply by loosening the nuts from outside the furnace. The operation is simple and quick, requiring no special tools or complicated procedures, significantly reducing maintenance time and labor intensity, and improving equipment operation and maintenance efficiency. 4. The fixing frame is embedded into the furnace body through a refractory mortar layer, ensuring both installation stability and a high-temperature seal between the frame and the furnace body. The design of the fixing cover both compresses the fixing frame and provides a hinge point for the maintenance door. The differentiated design of the inner and outer tapers ensures the structural strength and pressure resistance of the fixing frame. The overall structural layout is reasonable, the functions of each component are clearly defined, and they work well together, demonstrating good adaptability to the harsh working environment of the tempering furnace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 AA section view; Figure 3 for Figure 1 BB cross-sectional view; Figure 4 This is a schematic diagram of the structure of the inspection door and the sealing fit in this utility model; Figure 5 This is a schematic diagram of the inspection door and sealing structure from another perspective in this utility model.

[0016] In the diagram: 1. Furnace body; 11. Inspection port; 2. Inspection door; 21. Fixing component; 22. Door handle; 3. Fixing frame; 31. Radial extension; 4. Fixing cover; 5. Conical sealing block; 6. Connecting plate; 7. Screw; 71. Nut; 8. Flexible sealing ring; 9. Refractory mud layer. Detailed Implementation

[0017] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0018] Example 1, in conjunction with Appendix Figure 1-3 A sealing structure for a glass tempering furnace includes a furnace body 1, an inspection door 2, a fixing frame 3, a fixing cover 4, and a conical sealing block 5.

[0019] The side wall of the furnace body 1 is provided with an inspection port 11 for inspection and maintenance.

[0020] The fixing frame 3 is embedded and fixed to the inside of the inspection port 11 by the refractory mortar layer 9, ensuring high-temperature sealing between it and the furnace body 1. That is, when installing the fixing frame 3, the refractory mortar is first applied to the inner surface of the inspection port 11, then the fixing frame 3 is pressed into the inspection port 11, and then the overflowing refractory mortar is removed. After a certain period of time, the refractory mortar solidifies to form the refractory mortar layer 9.

[0021] Specifically, the inner cavity of the fixing frame 3 is a conical hole. The outer end of the fixing frame 3 (i.e. the end near the outer side of the furnace body) is provided with a radially outwardly extending flange, i.e., the radial extension 31.

[0022] The inner edge of the fixed cover 4 is pressed onto the radial extension 31 of the fixed frame 3, and is detachably installed on the outer wall of the furnace body 1 by fasteners such as bolts, thus serving to fix the fixed frame 3.

[0023] Preferably, a flexible sealing ring 8 (such as an insulation layer) is provided between the inner side of the radial extension 31 of the fixing frame 3 and the outer side wall of the furnace body 1.

[0024] One side of the access door 2 is pivotally connected to the fixed cover 4 via a hinge, pivot, or pivot, allowing the access door 2 to be opened or closed around that side. A door handle 22 is installed on the outer surface of the other side of the access door 2 for easy operation. An adjustable sealing assembly is provided on the inner surface of the access door 2 (i.e., the side facing the furnace cavity).

[0025] It should be noted that the inspection door 2 also has a locking structure (not shown in the figure), which is existing technology and will not be described in detail here.

[0026] The sealing assembly includes a conical sealing block 5 that matches the taper of the inner cavity of the fixed frame 3. A connecting plate 6 is fixed to the outer side of the conical sealing block 5 (i.e., the side facing away from the furnace cavity), and several outwardly extending screws 7 are welded or fixed to the outer surface of the connecting plate 6.

[0027] Preferably, the conical sealing block 5 is made of a flexible sealing material such as graphite that is resistant to high temperatures, wear-resistant, and has self-lubricating properties.

[0028] A through hole is provided on the inspection door 2 at the position corresponding to the screw 7. The screw 7 passes through the through hole on the inspection door 2 and a fastener 21 installed on the outside of the inspection door 2.

[0029] It should be noted that there is a gap between the position of the fixing component 21 corresponding to the screw 7 and the outer surface of the access door 2. This allows nuts 71 to be screwed onto both sides of the screw 7 located on the fixing component 21. By tightening or loosening the nuts 71, the relative position of the conical sealing block 5 on the access door 2 can be adjusted, thereby compensating for wear caused by long-term use and high temperatures, and ensuring that the conical sealing block 5 can always be tightly inserted into the conical inner cavity of the fixing frame 3 to form an effective seal.

[0030] To further enhance the sealing effect, a flexible sealing ring 8 is provided on the inner plate surface of the outer edge of the connecting plate 6 (i.e., the side facing the fixed frame 3). That is, when the inspection door 2 is closed and locked, the connecting plate 6 moves inward, and the flexible sealing ring 8 is tightly pressed between the outer end face of the connecting plate 6 and the fixed frame 3, forming another reliable sealing barrier.

[0031] Furthermore, a sealing groove is formed on the inner surface of the outer edge of the connecting plate 6, and a flexible sealing ring 8 is embedded in the sealing groove.

[0032] The working principle is as follows: When closing the inspection door 2, the operator holds the door handle 22 and pushes the door to the closed position. As the inspection door 2 closes, the conical sealing block 5 installed on its inner surface is inserted into the conical inner cavity of the fixed frame 3. Due to the characteristics of the conical surface fit, it can automatically center and tighten during the closing process, thereby achieving an excellent main sealing structure. Then, by tightening the nut 71 on the screw 7, the conical sealing block 5 can be further pushed inward, increasing the sealing pressure and compensating for possible wear. The flexible sealing ring 8 on the connecting plate 6 is also pressed at the same time, forming an auxiliary seal.

[0033] Example 2, in conjunction with Appendix Figure 1-3 A sealing structure for a glass tempering furnace. In Embodiment 1, the outer contour of the fixed frame 3 is a cuboid. When the fixed frame 3 is pressed into the inspection port 11, the refractory mortar is easily pushed out, resulting in uncontrollable gap defects between the refractory mortar layer 9 and the outer side of the fixed frame 3. Therefore, this embodiment differs from Embodiment 1 in that the outer contour of the fixed frame 3 is conical, and its inner end is a small end.

[0034] Preferably, the outer contour taper of the fixed frame 3 is smaller than its inner contour taper.

[0035] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A sealing structure for a glass tempering furnace, comprising a furnace body (1), wherein an inspection port (11) is provided on the side wall of the furnace body (1), and an inspection door (2) is provided on the outer side of the inspection port (11), wherein a sealing fit structure is provided between the inspection door (2) and the inspection port (11), characterized in that: The sealing fit structure includes: The fixing frame (3) is embedded inside the inspection port (11), and its outer periphery is provided with a radial extension (31). The inner cavity of the fixing frame (3) is conical. The fixed cover (4) has its outer edge detachably mounted on the outer side wall of the furnace body (1) and its inner edge pressed against the radial extension (31). The conical sealing block (5) is detachably installed on the inner surface of the inspection door (2) and is inserted into or removed from the inner cavity of the fixed frame (3) as the inspection door (2) opens and closes.

2. The sealing structure of a glass tempering furnace according to claim 1, characterized in that: The outer side of the conical sealing block (5) is provided with a connecting plate (6), and the outer plate surface of the connecting plate (6) is provided with a number of outwardly extending screws (7). The screws (7) pass through the inspection door (2) and are locked by nuts (71).

3. The sealing structure of a glass tempering furnace according to claim 2, characterized in that: The inner edge of the connecting plate (6) is provided with a flexible sealing ring (8), which is pressed between the inner surface of the connecting plate (6) and the outer end face of the fixing frame (3).

4. The sealing structure of a glass tempering furnace according to claim 2 or 3, characterized in that: The inspection door (2) is provided with a fixing member (21) on the outside. The screw (7) passes through the fixing member (21) and is screwed with nuts (71) on both sides. By adjusting the nuts (71), the screw (7) and the conical sealing block (5) are moved to compensate for the wear of the conical sealing block (5).

5. The sealing structure of a glass tempering furnace according to claim 1, characterized in that: The inspection door (2) is pivotally connected to the fixed cover (4) on one side, and a door handle (22) is provided on the outer surface of the other side.

6. The sealing structure of a glass tempering furnace according to claim 1, characterized in that: The inspection port (11) is sealed to the fixed frame (3) by a refractory mud layer (9).

7. The sealing structure of a glass tempering furnace according to claim 1 or 6, characterized in that: The outer contour of the fixed frame (3) is conical, and its inner end is a small end.

8. The sealing structure of a glass tempering furnace according to claim 7, characterized in that: The outer contour taper of the fixed frame (3) is smaller than its inner contour taper.

Images