Annealing furnace traction roller rotating supporting arm and annealing furnace
By adopting a multi-channel disturbing cooling structure on the rotating support arm of the traction roller of the substrate glass annealing furnace, the temperature increase caused by heat radiation and heat conduction in traditional equipment is solved, the service life of the bearing is extended, the cooling effect is improved and the cooling effect is reduced. security risks.
Patent Information
- Application Number
- CN202420965853.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The rotating support arm of the pull roller in a traditional substrate glass annealing furnace increases temperature due to heat radiation and heat conduction, resulting in bearing failure, short service life, affecting production safety, and increasing the risk of scalding for peripheral personnel.
Design a multi-channel disturbed cooling structure, including cooling channels surrounding the traction roller bearing mounting section, transition connection section and rotating bearing mounting section, and set up multiple cavity and disturbing parts, through which the cooling medium flows, increasing heat dissipation Area and flow resistance to improve cooling efficiency.
It effectively reduces the temperature of the rotating support arm, extends the service life of the bearing, improves the cooling effect, reduces the incidence of faults and the risk of scalding for peripheral personnel, and enhances the safety of the working environment.
Smart Images
Figure CN222205048U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of high-generation substrate glass production, and in particular relates to a traction roller rotating support arm of an annealing furnace and an annealing furnace. Background Art
[0002] With the rapid development of high-generation substrate glass, liquid crystal display technology has been widely used. In the manufacturing process of liquid crystal glass substrate, annealing furnace is a key equipment used to eliminate residual stress inside the substrate and improve the physical properties of the substrate. In the process of producing substrate glass using the overflow method, the glass liquid merges at the bottom of the overflow device and is stretched into a continuous glass sheet by the traction device. The glass sheet enters the annealing furnace after cooling and solidification. The substrate glass passes through the annealing area at a uniform speed through the rotation of the traction roller to form a substrate glass that meets the quality requirements.
[0003] However, there are some problems with the conventional substrate glass annealing furnace. In the annealing furnace, the traction of the substrate glass is achieved by the traction roller in the annealing furnace, and the clamping force of the traction roller is adjusted by the external counterweight. The rotating support wall is the intermediate support unit connecting the traction roller and the counterweight.
[0004] During the use of the device, since the counterweight arm is close to the annealing furnace body, it will be affected by the heat radiation and heat conduction of the furnace body, and the temperature of the rotating support arm will increase, causing the traction roller bearing connected to it to fail and shorten its service life. After the traction roller rotating bearing fails, it will affect the traction process of the glass substrate in the furnace body, causing the glass substrate to break and cause production failures. In addition, high temperature also increases the risk of scalding for peripheral staff, and safety has also become a concern. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide an annealing furnace traction roller rotating support arm and an annealing furnace, so as to reduce the temperature of the rotating support arm and improve the cooling effect.
[0006] The utility model provides a rotating support arm for a traction roller of an annealing furnace, comprising a rotating support arm body, wherein the rotating support arm body comprises a traction roller bearing installation section, a transition connection section and a rotating bearing installation section connected in sequence, wherein a traction roller bearing installation hole is arranged in the traction roller bearing installation section, wherein at least two cavities and an intermediate connection section located between the two cavities are arranged in the transition connection section, and wherein a rotating bearing installation hole is arranged in the rotating bearing installation section;
[0007] The rotating support arm body is provided with a cooling channel, which includes a traction roller bearing installation section cooling channel surrounding the traction roller bearing installation hole, a transition connection section cooling channel flowing through the transition connection section, and a rotating bearing installation section cooling channel surrounding the rotating bearing installation hole.
[0008] The number of the cavities is preferably two.
[0009] In one embodiment, the cross-sectional area of the cavity is 30-70% of the cross-sectional area of the transition section. The cross-sectional area refers to the area cut along the flow direction of the cooling medium.
[0010] In one of the embodiments, a water inlet joint and a water outlet joint are further provided on the rotating support arm body, wherein the water inlet joint is located at the traction roller bearing installation section, and the water outlet joint is located at the rotating bearing installation section.
[0011] In one of the embodiments, it also includes an arc-shaped water inlet pipe surrounding the outer surface of the traction roller bearing installation section, one end of the arc-shaped water inlet pipe is connected to the water inlet joint, and the other end is connected to the traction roller bearing installation section cooling channel in the traction roller bearing installation section.
[0012] In one of the embodiments, a plurality of disturbance members are provided on the side wall of the cooling channel.
[0013] In one embodiment, the plurality of disruptors are arranged in a staggered manner.
[0014] In one embodiment, the disturbance element includes a disturbance rod fixed on the side wall of the cooling channel and a disturbance ball located at the end of the disturbance rod.
[0015] In one embodiment, the diameter of the disturbance ball is larger than the diameter of the disturbance rod, and preferably, the diameter of the disturbance ball is 1.1-2 times the diameter of the disturbance rod.
[0016] In one embodiment, the cross-sectional areas of the cooling channels through which the cooling medium flows are the same.
[0017] The utility model provides an annealing furnace, comprising a traction roller bearing, a traction roller rotation support arm and a counterweight arm which are connected in sequence.
[0018] The beneficial effect of the utility model is that the utility model provides a multi-channel disturbance cooling structure for cooling the rotating support arm of the traction roller of the substrate glass annealing furnace. The cooling channel of the rotating support arm of the utility model includes a cooling channel of the traction roller bearing installation section, a cooling channel of the transition connection section, and a cooling channel of the rotating bearing installation section. When in use, cooling water or air or other cooling media enters from the water inlet joint (the water inlet joint can also enter other media such as air), flows in the cooling channel, and flows out from the water outlet joint.
[0019] The utility model is provided with at least two cavities in the transition connection section, which increases the contact area between the transition connection section and the air. When the cooling channel flows through the transition connection section, the heat driven by the cooling medium is more easily dissipated in the air, thereby increasing the cooling speed and the cooling effect. The cooling channel of the utility model includes a traction roller bearing installation section cooling channel surrounding the traction roller bearing installation hole, a transition connection section cooling channel flowing through the transition connection section, and a rotating bearing installation section cooling channel surrounding the rotating bearing installation hole. The main heat conduction direction is from the traction roller bearing to the rotating bearing through the rotating support arm. The bearing is a wearing part. Therefore, the cooling channel of the utility model is arranged around the outer periphery of the bearing, which can improve the heat dissipation capacity of the bearing, prevent heat from accumulating at the bearing, and increase the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the working principle of the rotating support arm;
[0021] Figure 2 It is a schematic diagram of the heating of the rotating support arm;
[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;
[0023] Figure 4 This is a cross-sectional view of the device of the utility model;
[0024] Figure 5 It is a schematic diagram of the structure and arrangement of the disturbance unit of the utility model;
[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the arc-shaped water inlet;
[0026] Figure 7 Schematic diagram of cooling water channel structure.
[0027] In the figure, 100 is a traction roller bearing, 200 is a rotating support arm, 300 is a counterweight arm, 1 is a rotating support arm body, 2 is an arc-shaped water inlet pipe, 3 is a water inlet joint, 4 is a water outlet joint, 11 is a traction roller bearing mounting section, 111 is a traction roller bearing mounting hole, 12 is a transition connection section, 121 is an intermediate connection section, 122 is a cavity, 13 is a rotating bearing mounting section, 131 is a rotating bearing mounting hole, 14 is a cooling channel, 141 is a traction roller bearing mounting section cooling channel, 142 is a transition connection section cooling channel, 143 is a rotating bearing mounting section cooling channel, 15 is a disturbance member, 151 is a disturbance rod, 152 is a disturbance ball, S1 is a cross-sectional area of the cooling channel of the traction roller bearing mounting section, S2 is a cross-sectional area of the cooling channel of the transition connection section, and S3 is a cross-sectional area of the cooling channel of the rotating bearing mounting section. DETAILED DESCRIPTION
[0028] The utility model provides a traction roller rotating support arm for an annealing furnace, comprising a rotating support arm body 1, wherein the rotating support arm body 1 comprises a traction roller bearing mounting section 11, a transition connecting section 12 and a rotating bearing mounting section 13 connected in sequence, wherein a traction roller bearing mounting hole 111 is arranged in the traction roller bearing mounting section 11, wherein at least two cavities 122 and an intermediate connecting section 121 located between the two cavities 122 are arranged in the transition connecting section 12, and wherein a rotating bearing mounting hole 131 is arranged in the rotating bearing mounting section 13;
[0029] A cooling channel 14 is provided in the rotating support arm body 1, and the cooling channel 14 includes a traction roller bearing mounting section cooling channel 141 surrounding the traction roller bearing mounting hole 111, a transition connection section cooling channel 142 flowing through the transition connection section 12, and a rotating bearing mounting section cooling channel 143 surrounding the rotating bearing mounting hole 131.
[0030] The cooling medium of the utility model is mainly water, and can also be other media such as air. The core purpose of the utility model is to protect the bearing and reduce the overall temperature. Therefore, in order to speed up the cooling speed, the cooling channel of the utility model includes a traction roller bearing installation section cooling channel 141 surrounding the traction roller bearing installation hole 111, a transition connection section cooling channel 142 flowing through the transition connection section 12, and a rotating bearing installation section cooling channel 143 surrounding the rotating bearing installation hole 131, which can take away the heat accumulated at the bearing at the first time, thereby protecting the bearing. At least two cavities 122 and an intermediate connection section 121 located between the two cavities 122 are provided in the transition connection section 12 of the utility model, which increases the contact ability of the cooling channel 14 with the outside air and improves its heat dissipation capacity.
[0031] The cross-sectional area of the cavity 122 is 30-70% of the cross-sectional area of the transition connection section 12, and is generally preferably 50-60%, which can not only ensure the connection strength, but also effectively improve the heat dissipation capacity.
[0032] The rotating support arm body 1 is also provided with a water inlet joint 3 and a water outlet joint 4, wherein the water inlet joint 3 is located at the traction roller bearing installation section 11, and the water outlet joint 4 is located at the rotating bearing installation section 13. The main heat accumulation place of the utility model is the traction roller bearing, therefore, the cooling medium enters from here, which can effectively improve its heat dissipation capacity and protect the traction roller bearing.
[0033] The device further comprises an arc-shaped water inlet pipe 2 surrounding the outer surface of the traction roller bearing installation section 11, one end of the arc-shaped water inlet pipe 2 is connected to the water inlet joint 3, and the other end is connected to the traction roller bearing installation section cooling channel 141 in the traction roller bearing installation section 11. The arc-shaped water inlet pipe 2 changes the direction of water inlet on the one hand, and can improve the cooling speed of the traction roller bearing on the other hand.
[0034] A plurality of disruptors 15 are disposed on the side wall of the cooling channel 14 , and the plurality of disruptors 15 are arranged in a staggered manner.
[0035] The disturbance member 15 includes a disturbance rod 151 fixed on the side wall of the cooling channel 14 and a disturbance ball 152 located at the end of the disturbance rod 151 .
[0036] The diameter of the disturbance ball 152 is greater than the diameter of the disturbance rod 151 .
[0037] The cross-sectional areas of the cooling channels 14 through which the cooling medium flows are the same.
[0038] When in use, cooling water enters the device from the inlet and flows in the cooling channel. Through the designed disturbance element 15, the cooling water can form eddies and disturbances, so that the cooling is more sufficient.
[0039] By introducing a multi-channel disturbance cooling structure, the following advantages are achieved. First, the temperature of the rotating support arm 200 is reduced, thereby improving the temperature of the bearing and extending its service life. Second, by arranging a disturbance piece on the water channel wall, the cooling water can absorb the heat on the rotating support wall 200, thereby improving the cooling effect. In addition, the risk of scalding of peripheral workers is reduced, and the safety of the working environment is increased.
[0040] The utility model provides an annealing furnace, comprising a traction roller bearing 100, an annealing furnace traction roller rotation support arm 200 and a counterweight arm 300 which are connected in sequence.
[0041] The purpose of the utility model is to provide a multi-water channel disturbance cooling structure for the rotating support arm of the traction roller of the substrate glass annealing furnace, which can effectively solve the problem of excessive temperature of the rotating support arm during normal production, reduce the temperature of the rotating support arm 200, effectively improve the temperature of the rotating bearing part, extend its service life, and reduce the failure rate; by arranging a cooling water disturbance member 15 on the water channel wall, the cooling water can efficiently absorb the heat on the rotating support arm 200, thereby improving the cooling effect; at the same time, the risk of scalding of peripheral staff is reduced, and the safety of the working environment is increased.
[0042] In the process of producing high-generation substrate glass by the overflow method, the high-temperature molten glass liquid is clarified and homogenized before flowing into the overflow bricks in the device. Subsequently, the glass liquid fuses at the bottom of the overflow bricks and is stretched into a continuous glass sheet by a traction device. Finally, through processes such as cooling, solidification and annealing, substrate glass that meets quality requirements is formed. In the process of producing high-generation substrate glass by the overflow method, the annealing furnace is a key equipment used to anneal the substrate glass sheet to improve its crystallization and mechanical properties.
[0043] The movement of the substrate glass from top to bottom in the annealing furnace is achieved by the rotation of the traction roller. The substrate glass passes between the two traction rollers in the annealing furnace. The effective rotation of the traction roller can achieve a reasonable annealing speed. Through the external counterweight adjustment, the clamping force of the traction roller can be changed, thereby achieving the stability of the traction process. The key to speed and stability is the rotating support arm 200.
[0044] The rotating bearing of the traction roller is fixed at an appropriate position inside the rotating support arm 200, and the counterweight arm 300 is also located on the rotating support arm 200, so the rotating support arm 200 is very important to ensure the rationality of the annealing speed and the stability of the annealing process. Figure 1 shown.
[0045] However, since the rotating support arm 200 is close to the annealing furnace, the heating process of the heating unit inside the annealing furnace and the heat dissipation process of the glass substrate will generate heat. Under the influence of heat radiation and heat conduction inside the furnace, the temperature of the rotating support arm 200 will be very high. Figure 2 As shown, the rotating bearing of the traction roller thereon is adversely affected, such as rotation failure, bearing jamming, and further plate breakage, resulting in production failure and affecting the safety of the production line; at the same time, the higher temperature of the rotating support arm 200 affects the counterweight arm 300, resulting in the risk of burns to personnel during adjustment and work, affecting the safety of personnel.
[0046] In order to solve these problems, the present application proposes a new multi-channel disturbance cooling structure for the traction roller rotating support arm of the substrate glass annealing furnace. The device includes a bearing outer ring water channel (i.e., the traction roller bearing installation section cooling channel 141), three intermediate water channels (transition connection section cooling channel 142), and a water channel wall composed of a disturbance unit composed of a small cylinder and a small sphere located thereon. When in use, cooling water enters the device from the inlet and circulates in the water channel. Through the designed disturbance element 15, the cooling water can form vortices and disturbances, making the cooling more sufficient.
[0047] In the working position of the bearing, an outer ring water channel is added, and three groups of water channel units are added between the two groups of bearing water channels, which can effectively increase the flow of the cooling medium, effectively absorb the heat on the rotating support arm 200, and reduce the temperature of the rotating support arm 200. At the same time, a disturbance member 15 is arranged inside the water channel. The disturbance member 15 is composed of a small cylinder and a sphere located thereon.
[0048] The disturbance members 15 are staggered on the inner surface of the water channel and staggered a certain distance apart to form a staggered arrangement pattern. This arrangement can form turbulence or eddy currents in the cooling medium during the flow process, thereby increasing the contact area between the cooling medium and the water channel wall and fully performing heat exchange, thereby greatly improving the heat transfer efficiency.
[0049] The utility model mainly comprises four parts: a rotating support arm body 1, an arc-shaped water inlet pipe 2, a water inlet joint 3, and a water outlet joint 4. Figure 3 shown.
[0050] The cooling medium can be cooling air or cooling water. Taking cooling water as an example, the details are as follows.
[0051] The cooling water enters from the water inlet joint 3, passes through the arc-shaped water inlet pipe 2, and then enters the rotating support arm body 1. The first part that comes into contact with the rotating bearing support part of the traction roller is the cooling water. The cooling water is divided into two parts at the water inlet, and the two parts pass through the outer wall of the arc-shaped structure to cool the rotating bearing support part of the traction roller. After the cooling water passes through the outer wall of the outer circle, it is divided into three paths and enters the intermediate transition cooling channel to cool the rotating support arm body 1, effectively reducing the temperature of the structure body; it flows into the outer circle channel of the rotating bearing support part to cool the rotating bearing support part, and finally flows out from the water outlet joint 4 to form a complete cooling cycle process, such as Figure 4 shown.
[0052] The rotating support arm body 1 is the core structure of the present application. Figure 3 , Figure 4 As shown, there are two parts, the upper and lower parts, whose structures are exactly the same. The upper and lower parts are closed into a whole. Taking one part as an example, the details are as follows.
[0053] The rotating support arm body 1 is divided into five parts, mainly consisting of a traction roller bearing mounting hole 111, a transition connection section 12, a rotating bearing mounting hole 131, a cooling channel 14, a disturbance member 15 and the like.
[0054] The traction roller bearing mounting hole 111, the transition connection section 12, and the rotating bearing mounting hole 131 constitute the main body of the structure, and the corresponding cooling channel 14 is also divided into three parts, namely, the traction roller bearing mounting section cooling channel 141, the transition connection section cooling channel 142, and the rotating bearing mounting section cooling channel 143. The cross-sections of the three cooling channels are oblong holes, which are adapted to the cross-sections of the main body of the structure.
[0055] The traction roller rotating bearing is fixed in the traction roller bearing mounting hole 111, the rotating bearing is fixed in the rotating bearing mounting hole 131, and the transition connecting section 12 is divided into three parts. This structural design can effectively improve the strength of the rotating support arm body 1 and is more conducive to the heat dissipation of the structural body.
[0056] The disturbance element 15 is composed of two parts, namely a disturbance rod 151 and a disturbance ball 152, which are staggered and evenly arranged around the wall of the cooling channel 14. Figure 5As shown, when the cooling water passes through the wall of the cooling channel 14, the high-speed flow of the cooling water is blocked, the cooling water is smoothly divided, and at the same time, it is subject to a certain flow resistance, and a vortex is formed at the contact part of the disturbance member 15, so that the cooling water is fully in contact with the wall of the cooling channel 14, which can effectively absorb the heat on the rotating support arm body 1 and reduce the temperature of the structure body. In this way, the temperature of the traction roller bearing installation section 11, the transition connection section 12 and the rotating bearing installation section 13 is effectively reduced, and the stability of the overall structure is ensured.
[0057] like Figure 3 , Figure 6 As shown, the arc-shaped water inlet pipe 2 is located at the large arc end of the rotating support arm body 1, outside the traction roller bearing mounting hole 111, the curvature radius of the outer contour of the arc-shaped water inlet pipe 2 is adapted to the end arc, and a water inlet channel is arranged inside the arc-shaped water inlet pipe 2.
[0058] The water inlet joint 3 is located at the tail end of the arc-shaped water inlet pipe 2, and the cross section of the water inlet channel is circular, which is convenient for connecting to the external cooling water system. The water outlet joint 4 is located at the small arc end of the rotating support arm body 1, and the cross section of the water outlet channel is also circular.
[0059] For the overall circulating water channel, the cross-sectional area of the water channel at the water inlet and the water outlet is equal, both are S; for the cooling channel 141 of the traction roller bearing installation section, the cross-sectional area is S1; the cross-sectional area of the cooling channel 142 of the single transition connection section is S2; the cross-sectional area of the cooling channel 143 of the rotating bearing installation section is S3, such as Figure 7 As shown, the following relationship exists: S=2×S1=3×S2=2×S3, to ensure the stability of flow.
[0060] In order to ensure good sealing when the cooling medium flows, the connections of the above parts can be welded, and the material can be 304 stainless steel.
[0061] In summary, the utility model can significantly improve the overheating problem of the rotating support arm 200 of the annealing furnace. By introducing a multi-channel disturbance cooling structure, the temperature of the rotating support arm 200 is significantly reduced, the temperature of the bearing is improved, and its service life is extended; by setting a disturbance piece on the water channel wall, the cooling water can fully absorb the heat on the support wall, thereby improving the cooling effect. At the same time, the risk of scalding of peripheral workers is reduced, and the safety of the working environment is increased.
[0062] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.
[0063] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.
Claims
1. A rotating support arm for a traction roller of an annealing furnace, characterized in that: The invention comprises a rotating support arm body (1), wherein the rotating support arm body (1) comprises a traction roller bearing mounting section (11), a transition connecting section (12) and a rotating bearing mounting section (13) which are connected in sequence, wherein a traction roller bearing mounting hole (111) is arranged in the traction roller bearing mounting section (111), wherein at least two cavities (122) and an intermediate connecting section (121) located between the two cavities (122) are arranged in the transition connecting section (12), and wherein a rotating bearing mounting hole (131) is arranged in the rotating bearing mounting section (13); A cooling channel (14) is provided in the rotating support arm body (1), and the cooling channel (14) comprises a traction roller bearing mounting section cooling channel (141) surrounding the traction roller bearing mounting hole (111), a transition connection section cooling channel (142) flowing through the transition connection section (12), and a rotating bearing mounting section cooling channel (143) surrounding the rotating bearing mounting hole (131).
2. The annealing furnace pulling roller rotating support arm according to claim 1, characterized in that: The cross-sectional area of the cavity (122) is 30-70% of the cross-sectional area of the transition connection section (12).
3. The annealing furnace traction roller rotating support arm according to claim 1, characterized in that: The rotating support arm body (1) is also provided with a water inlet joint (3) and a water outlet joint (4); the water inlet joint (3) is located at the traction roller bearing installation section (11), and the water outlet joint (4) is located at the rotating bearing installation section (13).
4. The annealing furnace pulling roller rotating support arm according to claim 3, characterized in that: It also includes an arc-shaped water inlet pipe (2) surrounding the outer surface of the traction roller bearing installation section (11), one end of the arc-shaped water inlet pipe (2) being connected to the water inlet joint (3), and the other end being connected to the traction roller bearing installation section cooling channel (141) in the traction roller bearing installation section (11).
5. The traction roller rotating support arm of the annealing furnace according to any one of claims 1 to 4, characterized in that: A plurality of disturbance members (15) are arranged on the side wall of the cooling channel (14).
6. The annealing furnace pulling roller rotating support arm according to claim 5, characterized in that: The plurality of disruptors (15) are arranged in a staggered manner.
7. The annealing furnace pulling roller rotating support arm according to claim 5, characterized in that: The disturbance member (15) comprises a disturbance rod (151) fixed on the side wall of the cooling channel (14) and a disturbance ball (152) located at the end of the disturbance rod (151).
8. The annealing furnace traction roller rotating support arm according to claim 7, characterized in that: The diameter of the disturbance ball (152) is greater than the diameter of the disturbance rod (151).
9. The traction roller rotating support arm of the annealing furnace according to any one of claims 1 to 4, characterized in that: The cross-sectional areas of the cooling channels (14) through which the cooling medium flows are the same.
10. An annealing furnace, characterized in that: It comprises a traction roller bearing (100), an annealing furnace traction roller rotation support arm (200) as claimed in any one of claims 1 to 9, and a counterweight arm (300) which are connected in sequence.