Heat preservation and preheating follow-up device for replacing stirring rod

Abstract

The utility model relates to the field of TFT-LCD (Thin Film Transistor Liquid Crystal Display) substrate glass production, in particular to a heat preservation and preheating follow-up device for replacing a stirring rod. Comprising a heat preservation shell and heating pieces, at least one heating piece is arranged in the heat preservation shell, and the heat preservation shell is of a flexible structure and can be arranged on the surface of a stirring rod in a sleeving mode; the flexible structure comprises a first cloth layer, a ceramic fiber layer and a second cloth layer which are sequentially arranged from inside to outside. The flexible design is adopted in the heat preservation shell, the heat preservation shell is of a composite structure composed of multiple layers of high-temperature-resistant materials, heat radiation generated when high-temperature molten glass is exposed can be effectively isolated, the temperature of the operation environment is reduced, an operator can replace the stirring rod in a safe environment, in addition, the heating piece can preheat the replaced stirring rod, and the stirring rod replacement efficiency is improved. And damages such as cracks and deformation of the stirring rod after replacement in a shock cooling or shock heating environment are avoided.

Description

Technical Field

[0001] The utility model relates to the field of TFT-LCD substrate glass production, in particular to a heat preservation and preheating follower device for replacing a stirring rod. Background Art

[0002] Stirring rods play a critical role in the manufacturing of TFT-LCD (Thin Film Transistor-Liquid Crystal Display) substrate glass. They are not only crucial for uniformly mixing the molten glass but also directly impact its quality and production efficiency. Therefore, the integrity and stable operation of stirring rods are crucial to the smooth operation of the entire production line. If a stirring rod suffers irreparable damage, such as cracks, deformation, or excessive wear, it must be promptly replaced to ensure continuity and stability in the production process.

[0003] During normal operation of the line, the working temperature of the stirring rod is usually maintained in the high temperature range of 1200-1600℃. When the heating system on the top of the stirring tank is turned on and the glass liquid is exposed to the air, the thermal radiation will instantly increase the temperature of the surrounding environment, forming a high temperature and high humidity environment. In this environment, it is not only difficult for operators to operate the stirring rod or perform other related operations at close range, but the high temperature and high humidity environment also makes it difficult to ensure the safety of operators.

[0004] Furthermore, the stirring rod is extremely susceptible to damage from rapid cooling and heating. Because the stirring rod needs to move in and out of hot molten glass during replacement, drastic temperature fluctuations can easily cause the rod to crack or deform due to thermal stress, leading to damage to the rod itself. Furthermore, the molten glass carried by the stirring rod may also break when suddenly cooled, and the flying glass fragments pose a significant safety hazard to nearby personnel. Before replacing the stirring rod, when the insulation and heating structure above the stirring tank is removed and the molten glass is exposed to air, a large amount of heat will be rapidly dissipated, which will not only affect the platinum body of the stirring tank but also cause the temperature of the molten glass to drop, affecting the stability and controllability of the process. Utility Model Content

[0005] The purpose of this utility model is to propose an insulation preheating follower device for replacing stirring rods, so as to solve the problems in the background technology such as high temperature and large heat radiation of the equipment, difficulty for personnel to operate at close range, serious heat loss of the glass liquid in the stirring tank, cracks or deformation of the stirring rod due to thermal stress, and even damage to the body.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model discloses a heat-insulating preheating follower device for replacing a stirring rod, comprising a heat-insulating shell and a heating element, wherein at least one heating element is provided in the heat-insulating shell, wherein the heat-insulating shell is a flexible structure and is sleeved on the surface of the stirring rod; the flexible structure comprises a first cloth layer, a ceramic fiber layer and a second cloth layer which are arranged in sequence from the inside to the outside.

[0008] As a further improvement, the first cloth layer, the ceramic fiber layer and the second cloth layer are sewn together by glass fiber.

[0009] As a further improvement, the heating element is a silicon carbon rod, and the heating element is arranged between the first cloth layer and the ceramic fiber layer.

[0010] As a further improvement, the first cloth layer and the second cloth layer are one of high silica cloth, glass fiber cloth, and high silica fiber-based cloth.

[0011] As a further improvement, the ceramic fiber layer is one of a 1600 type ceramic fiber blanket, a 1400 type ceramic fiber blanket, and a zirconium-containing ceramic fiber blanket.

[0012] As a further improvement, the thermal insulation shell is further provided with a plurality of temperature measuring ports, which are used for installing temperature measuring components.

[0013] As a further improvement, the diameter of the temperature measuring port is 5 mm.

[0014] As a further improvement, it further comprises a fastener, which can fasten the heat-insulating shell and the stirring rod.

[0015] As a further improvement, the fastener is a clamp.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention solves the problems of high-temperature radiation, heat loss, and thermal stress damage during the replacement of stirring rods in the production process of TFT-LCD substrate glass through the design of a heat-insulating shell and a built-in heating element. Specifically, the heat-insulating shell adopts a flexible design. The heat-insulating shell is composed of a composite structure of multiple layers of high-temperature resistant materials. It can effectively isolate the heat radiation generated when the high-temperature glass liquid leaks, significantly reducing the working environment temperature, allowing operators to replace the stirring rods in a safe environment; the heating element can preheat the stirring rods in the heat-insulating shell, so that the stirring rods are always in a stable thermal environment during the replacement process, avoiding the concentration of thermal stress caused by rapid cooling and heating, thereby preventing the stirring rods from cracking, deforming, or damaging the rod body; by wrapping the stirring rods, the present device can reduce the direct contact between the glass liquid and the air, reduce the heat loss rate, and ensure the temperature stability of the glass liquid in the stirring tank.

[0018] The utility model improves the overall sealing of the device by using glass fiber seals at the interfaces of each layer of the thermal insulation shell, further reduces heat dissipation in a high-temperature environment, and prevents the separation of the ceramic fiber layer due to high-temperature expansion, thereby ensuring long-lasting and stable thermal insulation performance; the silicon carbon rods provided can meet the temperature field uniformity requirements required for the replacement of the stirring rods; by arranging matching temperature measuring ports and temperature measuring components on the thermal insulation shell, the temperature of the stirring rods inside the device can be monitored in real time, providing data support for equipment safety and operation control, and effectively solving the problems of large temperature changes and low replacement efficiency in the traditional stirring rod replacement process, which can improve the stability and efficiency of the replacement process and is suitable for various industrial production scenarios that require high-temperature replacement of stirring rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the heat preservation and preheating follower device for replacing the stirring rod of the utility model;

[0020] Figure 2 This is a schematic diagram of the insulation shell of the insulation preheating follower device for replacing the stirring rod of the utility model.

[0021] Reference numerals: 1. clamp; 2. thermal insulation shell; 3. heating element; 4. temperature measuring port; 5. first cloth layer; 6. second cloth layer; 7. ceramic fiber layer; 8. glass fiber; 9. silicon carbon rod. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0023] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] The utility model discloses a heat preservation and preheating follower device for replacing stirring rods, which is mainly used for replacing stirring rods in the production process of TFT-LCD substrate glass. The device includes a heat preservation shell 2, a heating element 3, a fastener and a temperature measuring element. Through the synergistic effect of each device, the device can achieve the effects of heat preservation, preheating, temperature monitoring of the stirring rod and adaptability to stirring rods of different diameters. Figure 1 As shown, the thermal insulation shell 2 of this embodiment is a flexible structure, so the thermal insulation shell 2 can wrap the stirring rod. At the same time, the flexible structure isolates the high-temperature radiation of the stirring rod. The built-in silicon carbon rod 9 provides uniform preheating. The temperature measuring component set at the temperature measuring port 4 can monitor the temperature in real time. The clamp 1 can ensure that the device fits tightly with the stirring rod.

[0025] The heat-insulating shell 2 in the embodiment adopts a flexible composite structure, including a first cloth layer 5, a ceramic fiber layer 7 and a second cloth layer 6 arranged in sequence from the inside to the outside. Figure 2 As shown; in the embodiment, the first cloth layer 5 and the second cloth layer 6 are made of one of high-silica cloth, glass fiber cloth or high-silica fiber composite base cloth. In this embodiment, high-silica cloth is preferred. This material has the characteristics of high temperature resistance, low thermal conductivity and strong flexibility. It can directly contact the stirring rod at high temperature and can adapt to the movement during the replacement process of the stirring rod.

[0026] In the embodiment, since the heat-insulating shell 2 is a flexible structure, when wrapping the stirring rod, the flexible structure will produce opening and closing seams, which are specifically arranged on the side and bottom. After the heat-insulating shell 2 wraps the stirring rod, the opening and closing seams are closed by glass fiber.

[0027] The ceramic fiber layer 7 in the embodiment is located between the first cloth layer 5 and the second cloth layer 6. Specifically, one of the 1600 type ceramic fiber blanket, the 1400 type ceramic fiber blanket or the zirconium-containing ceramic fiber blanket is selected, and the 1600 type ceramic fiber blanket is preferred. This structure can withstand a high temperature of 1600°C and is suitable for high temperature environments. The layers in the embodiment are sewn together by glass fiber 8 to form an insulating shell 2. The glass fiber 8 has the characteristics of high temperature resistance and good sealing, which can prevent the ceramic fiber layer 7 at high temperature from separating between layers due to thermal expansion, while reducing heat dissipation from the gaps, thereby ensuring the overall thermal insulation effect of the insulating shell 2.

[0028] like Figure 1 As shown, since the thermal insulation shell 2 is a flexible structure, the thermal insulation shell 2 can wrap the surface of the stirring rod. During use, when the thermal insulation shell 2 is lifted to the outside of the stirring tank along with the stirring rod, it is necessary to first clean the glass liquid remaining at the bottom of the stirring rod, and then use glass fiber to seal the opening and closing seams on the side and bottom of the thermal insulation shell 2 so that the thermal insulation shell 2 completely wraps the stirring rod; when the thermal insulation shell 2 is lowered into the stirring tank along with the stirring rod, the opening and closing seams at the bottom of the thermal insulation shell 2 are opened, and as the stirring rod descends, the thermal insulation shell 2 will be stacked on the upper surface of the stirring tank, further reducing heat loss.

[0029] The multi-layered structure of the insulating shell 2 of the present invention allows it to tightly wrap the stirring rod and accommodate stirring rods of varying diameters. The combination of the first fabric layer 5, the second fabric layer 6, and the ceramic fiber layer 7 reduces the external ambient temperature to a safe operating range for operators, while also reducing heat loss from exposure to the molten glass and maintaining a stable temperature within the stirring tank.

[0030] In the embodiment, the heating element 3 is preferably a silicon carbon rod 9, which is specifically arranged between the first cloth layer 5 and the ceramic fiber layer 7. Figure 2As shown; wherein a plurality of silicon carbon rods 9 are arranged in sequence, one end of the silicon carbon rod 9 is connected to the electronic control system, and the temperature is adjusted in real time by the electronic control system. In this embodiment, the preheating temperature of the silicon carbon rod 9 is set to 800-1600°C. This temperature range can form a gradient with the working temperature of the stirring rod of 1200-1600°C, which can avoid sudden temperature changes. When in use, after replacing the stirring rod, the silicon carbon rod 9 is started and heated to the preset temperature, so that a uniform temperature field is formed inside the heat-insulating shell 2, which can preheat the new stirring rod to a temperature close to the working temperature.

[0031] like Figure 1 As shown, in the embodiment, a plurality of temperature measuring ports 4 are provided on the surface of the heat-insulating shell 2. The diameter of each temperature measuring port 4 is 5 mm and is used to install a temperature measuring component. In the embodiment, the temperature measuring component is preferably a thermocouple or an infrared thermometer. The temperature measuring ports 4 are evenly distributed on the middle surface of the heat-insulating shell 2 to monitor the temperature distribution in the device. The temperature of the stirring rod is collected in real time through the temperature measuring component, and the heating power of the silicon carbon rod 9 is dynamically adjusted to accurately control the preheating temperature and ensure that the stirring rod works within a suitable temperature range.

[0032] The fastener in the embodiment is a clamp 1, which is preferably made of 310S stainless steel. Figure 1 As shown, the clamp 1 surrounds the top of the insulation shell 2, and the device is fixed to the flange on the top of the stirring rod through the clamp 1. Since the insulation shell 2 is a flexible structure, the clamp 1 can adapt to the installation requirements of stirring rods of different diameters and achieve the fit between the insulation shell 2 and the stirring rod.

[0033] When the device is in use, when the top of the stirring rod is separated from the stirring tank, the insulation shell 2 is fixed to the flange at the top of the stirring rod by the fastener 1. When the bottom of the stirring rod is separated from the stirring tank, the insulation shell 2 wraps the stirring rod as a whole, and the opening and closing seams of the insulation shell 2 are closed using glass fiber 8. The stirring rod is heated and kept warm by the heating element 3.

[0034] After replacing the new stirring rod, the new stirring rod is wrapped by this device, and the opening and closing seams of the insulation shell 2 are closed with glass fiber 8. After the new stirring rod is heated to the preset temperature by the heating element 3, the new stirring rod is driven to descend into the stirring tank, and the opening and closing seams at the bottom of the insulation shell 2 are opened. During the descent, the insulation shell 2 will be stacked on the opening at the top of the stirring tank. After the new stirring rod enters the stirring tank, the fastener 1 of the flange at the top of the new stirring rod is opened, and the device is separated from the new stirring rod to complete the stirring rod replacement operation.

[0035] It should be noted that, in the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0036] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0037] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A heat preservation and preheating follower device for replacing a stirring rod, characterized in that: It comprises a heat-insulating shell and a heating element, wherein at least one heating element is provided in the heat-insulating shell, wherein the heat-insulating shell is a flexible structure and is sleeved on the surface of the stirring rod; The flexible structure includes a first cloth layer, a ceramic fiber layer and a second cloth layer which are sequentially arranged from inside to outside.

2. A heat preservation and preheating follower device for replacing a stirring rod according to claim 1, characterized in that: The first cloth layer, the ceramic fiber layer and the second cloth layer are sewn together by glass fibers.

3. A heat preservation and preheating follower device for replacing a stirring rod according to claim 1, characterized in that: The heating element is a silicon carbon rod and is arranged between the first cloth layer and the ceramic fiber layer.

4. A heat preservation and preheating follower device for replacing a stirring rod according to claim 1, characterized in that: The first cloth layer and the second cloth layer are one of high silica cloth, glass fiber cloth and high silica fiber-based cloth.

5. The heat preservation and preheating follower device for replacing a stirring rod according to claim 1, characterized in that: The ceramic fiber layer is one of a 1600 type ceramic fiber blanket, a 1400 type ceramic fiber blanket, and a zirconium-containing ceramic fiber blanket.

6. A heat preservation and preheating follower device for replacing a stirring rod according to claim 1, characterized in that: The heat-insulating shell is also provided with a plurality of temperature measuring ports, which are used for installing temperature measuring components.

7. A heat preservation and preheating follower device for replacing a stirring rod according to claim 6, characterized in that: The diameter of the temperature measuring port is 5 mm.

8. The heat preservation and preheating follower device for replacing a stirring rod according to claim 1, characterized in that: Also included is a fastener capable of fastening the heat-insulating housing to the stirring rod.

9. A heat preservation and preheating follower device for replacing a stirring rod according to claim 8, characterized in that: The fastener is a clamp.

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