CN120903803A

CN120903803A - A flow-guiding inlet brick platform device

Info

Publication number: CN120903803A
Application number: CN202510987342.5A
Authority: CN
Inventors: 李小伟; 陈建
Original assignee: Irico Hefei LCD Glass Co Ltd
Current assignee: Irico Hefei LCD Glass Co Ltd
Priority date: 2025-07-17
Filing date: 2025-07-17
Publication date: 2025-11-07

Abstract

This invention discloses a flow-guiding inlet brick platform device, relating to the field of glass substrate production technology. It includes a high-temperature furnace and a feeding module. The high-temperature furnace has a pre-installed furnace inlet on its side. The discharge end of the feeding module connects to the inlet of the furnace inlet. The furnace inlet is inclined, and its inlet size is larger than its outlet size. The furnace inlet has multiple flow-guiding steps at its inner bottom, and its inner wall is coated with a high-temperature resistant composite material outer shell. This device can extend the lifespan of the feeding brick, reduce raw material flow eddies and coking, precisely control the feeding inlet temperature, improve raw material conveying efficiency and glass melt uniformity, reduce production costs, and improve the yield and stability of glass substrate production.

Description

Flow guide type feeding port brick platform device

Technical Field

The invention relates to the technical field of glass substrate production, in particular to a diversion type feeding brick platform device.

Background

In the production process of a TFT-LCD (thin film transistor liquid crystal display) glass substrate, a feeding system plays a vital role, and the core task is to continuously and stably convey raw materials into a high Wen Chilu for melting, so that uniform and high-quality glass liquid is provided for subsequent glass substrate manufacturing. The working temperature of the high-temperature tank furnace is up to about 1600 ℃, and the extremely high-temperature environment has extremely severe requirements on the performance and stability of a feeding system;

the traditional feed port bricks are mostly made of single zirconium bricks. The zirconium brick has certain high temperature resistance and can bear the high temperature environment of Wen Chilu to a certain extent. However, a single zirconia brick material of a feed port brick is extremely susceptible to thermal fatigue under prolonged continuous exposure to high temperatures of around 1600 ℃. Repeated temperature changes can create thermal stresses within the brick due to thermal expansion of the material in a high temperature environment and shrinkage upon cooling. Over time, these thermal stresses build up, eventually leading to cracking of the feed dog-house. Once the feed port bricks are cracked, normal conveying of raw materials can be affected, high-temperature glass liquid can be leaked, safety accidents are caused, and meanwhile, the maintenance cost of equipment and the risk of production interruption are increased;

The raw material flow path of conventional feed port bricks is fixed and this design lacks efficient guidance of raw material flow characteristics. In the actual production process, when the raw materials enter the height Wen Chilu through the feeding port, vortex is easy to form in a local area. The presence of eddy currents can cause heat to build up in localized areas, such that the temperature in the areas is much higher than elsewhere. The high temperature accumulation not only accelerates the thermal fatigue process of the feed dog-house brick, but also causes excessive reaction or decomposition of certain components in the raw materials to produce cokes. The cokes are gradually accumulated near the feeding hole, so that the flow of raw materials is further hindered, the feeding efficiency is reduced, the uniformity of the raw materials entering the high Wen Chilu is influenced, the uniformity of glass liquid is finally adversely affected, the quality of a glass substrate is reduced, and the yield of products is reduced;

in the prior art, the feeding system mainly relies on a passive heat dissipation mode to reduce the temperature of a feeding port. Passive heat dissipation generally relies on heat conduction from the feed gap brick itself and heat exchange with the surrounding environment to achieve heat dissipation. However, the heat dissipation mode cannot be accurately regulated according to the actual temperature condition of the feed inlet. In the high Wen Chilu running process, the temperature of the feed port can be influenced by various factors, such as the input amount of raw materials, the temperature change in the tank furnace and the like. The passive heat dissipation can not timely respond to the changes, so that the temperature fluctuation of the feeding port is larger. The temperature fluctuation can aggravate the structural degradation of the feed port brick, so that the problems of thermal fatigue cracking and the like are more likely to occur. Meanwhile, the instability of the temperature of the feed port can also influence the distribution of a temperature field in the high Wen Chilu, so that the melting process and uniformity of glass liquid are influenced, and the production quality of the glass substrate is negatively influenced.

Disclosure of Invention

In order to solve the technical problems in the background technology, the invention provides a diversion type feeding port brick platform device.

The invention provides a diversion type feed opening brick platform device which comprises a high Wen Chilu and a feeding module, wherein a tank feed opening is reserved at the side part of a high-temperature tank, the discharge end of the feeding module is connected with the feed opening of the tank feed opening, the tank feed opening is obliquely arranged, the size of the feed opening of the tank feed opening is larger than that of the discharge opening, a multi-stage diversion step is arranged at the bottom end of the interior of the tank feed opening, and a high-temperature resistant composite material outer shell layer is arranged on the inner wall of the tank feed opening in a spraying manner.

Further, the side part of the high-temperature tank furnace is provided with a material port cooling heat conducting piece in an embedded mode at a position corresponding to the feeding port of the tank furnace, the inside of the material port cooling heat conducting piece is of a hollow structure, and the side part of the material port cooling heat conducting piece is respectively connected with a cooling liquid inlet connector and a cooling liquid outlet connector.

Further, the feeding module comprises a support, a feeding cylinder is arranged at the top end of the support, an auger shaft is rotatably connected in the feeding cylinder, a coupler is arranged at the end part of the feeding cylinder, a driving motor is arranged at the end part of the coupler, and a driving end of the driving motor is connected with the auger shaft through the coupler so as to drive the auger shaft to rotate.

Further, a hopper is arranged at the top end of the material conveying cylinder, and a discharge hole at the bottom of the hopper is communicated with the inside of the material conveying cylinder.

Further, an opening is formed in one end, facing the feeding port of the tank furnace, of the material conveying cylinder, so that materials are conveyed to the feeding port of the tank furnace when the auger shaft rotates.

Further, a cavity is formed in the shell of the material conveying barrel, a material conveying barrel liquid inlet connector communicated with the cavity is connected to the bottom end of the material conveying barrel, and a material conveying barrel liquid outlet connector communicated with the cavity is connected to the top end of the material conveying barrel.

Further, the liquid outlet connector of the material conveying cylinder is connected with the cooling liquid inlet connector through a flow guide pipe so as to convey cooling liquid in the cavity to the inside of the material opening cooling heat conducting piece, thereby cooling the material inlet of the tank furnace.

Further, the high temperature resistant composite material outer shell layer is provided as a composite ceramic coating of silicon carbide and zirconia.

The invention has the beneficial effects that:

1. The excellent thermal shock resistance of the material inlet brick is fully utilized by adopting the advanced composite material, compared with the traditional single zirconium brick material, the structural stability of the material inlet brick in a high-temperature environment can be obviously improved, when the material inlet brick is exposed in a high Wen Chilu environment with the temperature of about 1600 ℃ for a long time, the thermal fatigue cracking phenomenon caused by thermal stress concentration can be effectively reduced, the service life of the material inlet brick is greatly prolonged, and the equipment maintenance cost and the production interruption risk are reduced;

2. The flow guide structure can accurately optimize the flow path of the raw materials at the feed port according to the high-temperature hydrodynamic principle, overcomes the defects that the flow path of the raw materials of the traditional feed port brick is fixed and vortex is easy to form, enables the raw materials to uniformly and stably enter the high Wen Chilu, effectively reduces the accumulation of heat in a local area, reduces the possibility of accumulation of coked materials, improves the efficiency of conveying the raw materials, ensures the uniformity of the raw materials entering a tank furnace, and lays a foundation for producing high-quality glass liquid;

3. different from the passive heat dissipation dependence in the prior art, the active temperature control system can monitor the temperature change of the feed inlet in real time, accurately regulate and control according to preset temperature parameters, effectively reduce the fluctuation of the temperature of the feed inlet through active heat dissipation or heating measures, avoid the degradation influence on the structure of the feed inlet brick caused by unstable temperature, and stabilize the temperature field distribution in the high Wen Chilu at the same time, thereby improving the melting quality and uniformity of glass liquid and remarkably improving the yield of glass substrates.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a split structure of a feeding module according to the present invention;

FIG. 3 is a half cross-sectional view of a feed delivery cartridge of the present invention;

fig. 4 is a half cross-sectional view of the present invention.

1, A height Wen Chilu, 2, a feeding module, 21, a bracket, 22, a material conveying cylinder, 221, an opening, 222, a cavity, 223, a material conveying cylinder liquid inlet joint, 224, a material conveying cylinder liquid outlet joint, 23, an auger shaft, 24, a coupling, 25, a driving motor, 26, a hopper, 3, a tank furnace feed inlet, 31, a multi-stage diversion step, 32, a high-temperature resistant composite material shell layer, 4, a material inlet cooling heat conducting piece, 41, a cooling liquid inlet joint, 42, a cooling liquid outlet joint and 5, a diversion pipe.

Detailed Description

Referring to fig. 1-4, the diversion type feed opening brick platform device provided by the invention mainly comprises a height Wen Chilu and a feeding module. The high-temperature tank furnace is used as core equipment for smelting materials, a tank furnace feed inlet is reserved at the side part of the high-temperature tank furnace, the discharge end of the feeding module is tightly connected with the feed inlet of the tank furnace feed inlet, smooth material conveying is realized, and the concrete technical scheme is as follows:

The high-temperature tank furnace is used for carrying out high-temperature smelting treatment on the input materials. The side part of the cooling heat conducting piece is provided with a material opening cooling heat conducting piece in an embedded manner at a position corresponding to the feeding opening of the tank furnace, the material opening cooling heat conducting piece is made of a metal material with high heat conducting performance, the inside of the cooling heat conducting piece is provided with a hollow structure, and the side part of the cooling heat conducting piece is respectively connected with a cooling liquid inlet connector and a cooling liquid outlet connector so as to facilitate the circulation flow of cooling liquid, cool the feeding opening of the tank furnace and prevent the feeding opening from being damaged or the material conveying from being influenced due to high temperature;

The feeding port of the tank furnace is obliquely arranged, so that materials can smoothly enter the interior of the high Wen Chilu under the action of gravity, the size of the feeding port of the tank furnace is larger than that of the discharging port, a tapered structure is formed, the materials can be gradually compressed in the entering process, the compactness of the materials is improved, meanwhile, the flow rate of the materials can be controlled, the multistage diversion steps are arranged at the bottom end of the inner end of the feeding port of the tank furnace, the multistage diversion steps are distributed in a stepped manner, the flowing direction of the materials can be further guided, the materials can uniformly and stably enter the high Wen Chilu, the materials are prevented from being accumulated or blocked, in addition, the inner wall of the feeding port of the tank furnace is sprayed with a high-temperature-resistant composite material outer shell layer which is formed by silicon carbide and zirconia, and the composite ceramic coating has excellent high-temperature resistance and corrosion resistance, the inner wall of the feeding port of the tank furnace can be effectively protected, and the service life of the tank furnace is prolonged;

The feeding module comprises a support, the support is made of a firm metal material, a stable support is provided for the whole feeding module, a feeding cylinder is mounted at the top end of the support, and the feeding cylinder is of a cylindrical barrel structure and is used for conveying materials. The hopper is installed on the top of defeated feed cylinder, and the hopper bottom is the toper, and its discharge gate is linked together with the inside of defeated feed cylinder, conveniently pours the material into defeated feed cylinder in, and the inside rotation of defeated feed cylinder is connected the auger axle, is provided with helical blade on the auger axle, can carry the material to the other end from one end through rotatory, and the shaft coupling is installed to the tip of defeated feed cylinder, and driving motor is installed to the tip of shaft coupling, and driving motor's drive end passes through the shaft coupling and is connected with the auger axle. When the driving motor is started, the auger shaft is driven to rotate through the coupler, so that the conveying of materials is realized, an opening is formed in one end of the material conveying cylinder, facing the feeding hole of the tank furnace, and when the auger shaft rotates, the materials are pushed to the opening by the spiral blades and are further conveyed to the feeding hole of the tank furnace, and the feeding process of the materials is completed;

In the long-time working process of the material conveying cylinder, high temperature can be generated due to friction of materials and the influence of high-temperature environment. In order to cool the material conveying cylinder, a cavity is arranged in the shell of the material conveying cylinder, the bottom end of the material conveying cylinder is connected with a material conveying cylinder liquid inlet connector communicated with the cavity, and the top end of the material conveying cylinder is connected with a material conveying cylinder liquid outlet connector communicated with the cavity. The cooling liquid enters the cavity from the liquid inlet connector of the material conveying cylinder, absorbs the heat of the material conveying cylinder in the flowing process of the cavity, and then flows out from the liquid outlet connector of the material conveying cylinder;

Meanwhile, the liquid outlet connector of the material conveying cylinder is connected with the cooling liquid inlet connector through the guide pipe, so that the cooling liquid flowing out of the cavity can be conveyed to the inside of the material opening cooling heat conducting piece through the guide pipe, the material opening of the tank furnace is continuously cooled, the recycling of the cooling liquid is realized, the cooling efficiency is improved, and the overall energy consumption of the device is reduced.

In the actual use process, firstly, materials are poured into a hopper, and enter a material conveying cylinder through a discharge hole at the bottom of the hopper. Starting a driving motor, and driving the auger shaft to rotate by the driving motor through the coupler, wherein the spiral blade on the auger shaft conveys the material forwards until the material enters the feeding hole of the tank furnace from the opening at one end of the feeding cylinder. The materials smoothly enter the high Wen Chilu along the multi-stage diversion steps in the feed inlet of the tank furnace for smelting. Meanwhile, the cooling liquid circularly flows in the cavity of the material conveying cylinder and the material opening cooling heat conducting piece to cool the material conveying cylinder and the material inlet of the tank furnace, so that the stable operation of the device is ensured.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. A flow-guiding inlet brick platform device, comprising a high-temperature pool furnace (1) and a feeding module (2), characterized in that a pool furnace inlet (3) is reserved on the side of the high-temperature pool furnace (1), the discharge end of the feeding module (2) is connected to the inlet of the pool furnace inlet (3), the pool furnace inlet (3) is inclined, and the inlet size of the pool furnace inlet (3) is larger than the outlet size, a multi-level flow-guiding step (31) is provided at the bottom of the pool furnace inlet (3), and a high-temperature resistant composite material outer shell layer (32) is sprayed on the inner wall of the pool furnace inlet (3).

2. The flow-guiding feed inlet brick platform device according to claim 1, characterized in that a feed inlet cooling heat conduction component (4) is embedded in the side of the high-temperature furnace (1) at the position corresponding to the furnace feed inlet (3), the interior of the feed inlet cooling heat conduction component (4) is set as a hollow structure, and the side of the feed inlet cooling heat conduction component (4) is respectively connected to a cooling liquid inlet connector (41) and a cooling liquid outlet connector (42).

3. The guide-type feed inlet brick platform device according to claim 1, characterized in that the feeding module (2) includes a support (21), a feeding cylinder (22) is installed at the top of the support (21), an auger shaft (23) is rotatably connected inside the feeding cylinder (22), and a coupling (24) is installed at the end of the feeding cylinder (22), a drive motor (25) is installed at the end of the coupling (24), and the drive end of the drive motor (25) is connected to the auger shaft (23) through the coupling (24) to drive the auger shaft (23) to rotate.

4. The guide-type feed inlet brick platform device according to claim 3, characterized in that a hopper (26) is installed at the top of the feed cylinder (22), and the discharge port at the bottom of the hopper (26) is connected to the interior of the feed cylinder (22).

5. The guide-type feed inlet brick platform device according to claim 3, characterized in that the end of the conveying cylinder (22) facing the furnace feed inlet (3) is provided with an opening (221) so as to convey the material to the furnace feed inlet (3) when the auger shaft (23) rotates.

6. The flow-guiding inlet brick platform device according to claim 3, characterized in that a cavity (222) is provided inside the shell of the conveying cylinder (22), the bottom end of the conveying cylinder (22) is connected to a conveying cylinder liquid inlet connector (223) communicating with the cavity (222), and the top end of the conveying cylinder (22) is connected to a conveying cylinder liquid outlet connector (224) communicating with the cavity (222).

7. The flow-guided feed inlet brick platform device according to claim 6, characterized in that the liquid outlet connector (224) of the conveying cylinder and the liquid inlet connector (41) are connected by a flow guide pipe (5) to transport the coolant in the cavity (222) to the interior of the material outlet cooling heat conduction component (4) so as to cool the furnace feed inlet (3).

8. The flow-guiding feed inlet brick platform device according to claim 1, wherein the high-temperature resistant composite material outer shell layer (32) is configured as a composite ceramic coating of silicon carbide and zirconium oxide.