CN-121573900-B - Be applied to platinum material way variable cross section homogenization purifier of glass float process production

CN121573900BCN 121573900 BCN121573900 BCN 121573900BCN-121573900-B

Abstract

The invention relates to the field of platinum material channels, in particular to a platinum material channel variable cross-section homogenizing and purifying device applied to glass float production, which comprises a material channel body, wherein the material channel body is composed of a contraction section, a homogenizing section and a flaring section, the contraction section is positioned at one side of a feeding end of the material channel body and is of a funnel-shaped structure, the larger opening end of the contraction section is positioned at the feeding end of the material channel body, the diameter ratio of the openings at the two ends of the contraction section is 4:3, the diameter ratio of the length of the contraction section to the smaller opening end of the contraction section is 3.5:3, the homogenizing section is of a straight cylinder structure, one end of the homogenizing section is communicated with the smaller opening end of the contraction section, the flaring section is arranged at one end of the homogenizing section, which is far away from the contraction section, the flaring section is of a funnel-shaped structure, and the smaller opening end of the flaring section is connected with the end of the homogenizing section. The invention can inhibit the backflow of glass melt, simplify the process flow, reduce the production energy consumption, improve the uniform efficiency and reduce the defective rate.

Inventors

WANG YUQI
ZHANG CHUN
MENG QINGRUI
LI YU
WANG SHUANGYU
LI YAN
ZHAI YAOPO
HU XUANYANG
HAN ZITENG

Assignees

耀华特种玻璃(秦皇岛)有限公司

Dates

Publication Date: 20260505
Application Date: 20260128

Claims (6)

1. A platinum material channel variable cross-section homogenizing and purifying device applied to glass float production comprises a material channel body (1); the material channel is characterized in that the material channel body (1) is composed of a contraction section (11), a homogenization section (12) and a flaring section (13); the shrinkage section (11) is positioned at one side of the feeding end of the material channel body (1), the shrinkage section (11) is of a funnel-shaped structure, the larger opening end of the shrinkage section (11) is positioned at the feeding end of the material channel body (1), the diameter ratio of the openings at the two ends of the shrinkage section (11) is 4:3, and the diameter ratio of the length of the shrinkage section (11) to the smaller opening end of the shrinkage section (11) is 3.5:3; The homogenizing section (12) is in a straight cylinder structure, and one end of the homogenizing section (12) is communicated with the smaller end of the opening of the shrinkage end; The flaring section (13) is arranged at one end of the homogenizing section (12) far away from the shrinkage section (11), the flaring section (13) is of a funnel-shaped structure, the smaller opening end of the flaring section (13) is connected with the end part of the homogenizing section (12), the diameter ratio of the openings at the two ends of the shrinkage section (11) is 4:3, the ratio of the length of the shrinkage section (11) to the diameter of the smaller opening end of the shrinkage section (11) is 5:3, and temperature sensors and heating wires are arranged on the shrinkage section (11), the homogenizing section (12) and the flaring section (13); a homogenization unit (2) is arranged in the homogenization section (12), the homogenization unit (2) comprising a stirring section and a rotary drive (23); the stirring part is provided with a plurality of stirring parts and is arranged in the homogenizing section (12) along the length direction of the material channel body (1), and the stirring part comprises a rotating shaft (21) and a guide vane (22); The rotating shaft (21) is rotatably arranged in the homogenizing section (12) along the width direction of the material channel body (1); A plurality of guide vanes (22) are arranged around the axis of the rotating shaft (21), the guide vanes (22) are fixedly arranged on the rotating shaft (21), and the guide vanes (22) and the rotating shaft (21) are made of platinum; the rotary driver (23) is arranged at the outer side of the material channel body (1), and the rotary driver (23) is used for driving the rotating shaft (21) to rotate; a guide plate (24) is laid at the bottom of the platinum material channel, the upper end surface of the guide plate (24) is of a wavy structure, and the wavy structure extends along the length direction of the platinum material channel; A quartz filter body (3) for filtering the glass melt is arranged in the material channel body (1), and the quartz filter body (3) is arranged at two sides of the rotating shaft (21); the quartz filter bodies (3) are distributed on the platinum material channel in a staggered way, and the vertical section of the homogenization section (12) is covered by the projection of the quartz filter bodies (3) in the horizontal direction.
2. The platinum material channel variable cross-section homogenizing and purifying device applied to glass float production according to claim 1, wherein the horizontal cross section of the quartz filter body (3) is in a honeycomb structure.
3. The platinum material channel variable cross-section homogenizing and purifying device applied to glass float production according to claim 1, wherein when the building soda-lime-silica float glass is produced, the pore diameter of the filtering pores of the quartz filtering body (3) is 400 mu m, the pore density is 25 pores/cm < 2 >, and the rotating speed of the guide vane (22) is 4r/min.
4. The platinum material channel variable cross-section homogenizing and purifying device applied to glass float production according to claim 1, wherein when the automobile float glass is produced, the pore diameter of a filter hole of a quartz filter body (3) is 400 mu m, the pore density is 28 holes/cm < 2 >, and the rotating speed of a guide vane (22) is 5r/min.
5. The platinum material channel variable cross-section homogenizing and purifying device applied to glass float production according to claim 1, wherein a plurality of metal sealing rings (211) are fixedly sleeved at one end of the rotating shaft (21) along the extending direction of the rotating shaft (21), a plurality of annular grooves (212) are arranged on the side wall of the material channel body (1), and each annular groove (212) is internally provided with one metal sealing ring (211).
6. The platinum material channel variable cross-section homogenizing and purifying device applied to glass float production according to claim 1, wherein a high-temperature-resistant heat-insulating coupler (231) for fixedly connecting the rotary driver (23) and the rotating shaft (21) is arranged between the rotary driver (23) and the rotating shaft (21), and the output end of the rotary driver (23) is indirectly contacted with the rotating shaft (21) through the high-temperature-resistant heat-insulating coupler (231).

Description

Be applied to platinum material way variable cross section homogenization purifier of glass float process production Technical Field The invention relates to the field of platinum material channels, in particular to a variable cross-section homogenizing and purifying device for a platinum material channel applied to glass float production. Background In the float glass preparation process, a platinum material channel is a key device for connecting a melting link and a forming link, and is required to bear the tasks of stable conveying, component homogenization and impurity purification of high-temperature glass melt, so that the forming quality (such as thickness uniformity and no bubble/impurity defect) of a glass ribbon in a float tin bath is directly determined. The capacity of the current float glass is continuously enlarged, and the requirements of backflow prevention, high-efficiency homogenization, high-temperature purification resistance and long service life of a platinum material channel are increasingly urgent. The existing platinum material channel for float production has obvious technical limitations that 1, the material channel is mostly designed with a uniform cross section (the whole inner diameter is consistent), local negative pressure cannot be formed, glass melt is easy to flow back at the joint of the inlet and the middle section of the material channel due to high viscosity and high flow resistance, so that the feeding quantity of a float tin groove is fluctuated, and the thickness of a glass belt is uneven, 2, a homogenization link depends on natural convection of the melt, a non-active disturbance structure is adopted, the homogenization efficiency is low, so that the local performance difference (such as light transmittance and strength) of the glass belt is caused, 3, the platinum material channel is mostly pure platinum, the creep resistance is weak at high temperature (1600 ℃), the raw material channel is easy to deform if the pressure difference between the feeding end and the discharging end is not controlled properly, the service life is short (the cost of platinum consumable material) is extremely high, 4, the existing equipment is not designed aiming at the characteristics of continuous stable feeding of a float, homogenization, purification and backflow prevention functions are independent, and an additional homogenization furnace and a filter tank are needed, so that the temperature loss is caused, and the temperature loss is further influenced. Disclosure of Invention Aiming at the problems, the variable cross-section homogenizing and purifying device for the platinum material channel applied to glass float production is provided, and the linkage relation between the flow velocity and the pressure of glass melt in flow channels with different cross sections is utilized through the gradual change type variable cross-section design of a contraction section, a homogenizing section and a flaring section, so that the outlet position of the homogenizing section can form a stable local negative pressure area. The gradual change structure avoids turbulence and pressure disturbance caused by abrupt change of the section, adapts the flow characteristic of the high-viscosity melt, and effectively inhibits the backflow phenomenon of the glass melt at the joint of the material channel inlet and the middle section. In order to solve the problems in the prior art, the invention provides a platinum material channel variable cross-section homogenizing and purifying device applied to glass float production, which comprises a material channel body; The material channel body consists of a contraction section, a homogenization section and a flaring section; The shrinkage section is positioned at one side of the feeding end of the material channel body, the shrinkage section is of a funnel-shaped structure, the larger end of the opening of the shrinkage section is positioned at the feeding end of the material channel body, the diameter ratio of the openings at the two ends of the shrinkage section is 4:3, and the diameter ratio of the length of the shrinkage section to the smaller end of the opening of the shrinkage section is 3.5:3; the homogenizing section is in a straight cylinder structure, and one end of the homogenizing section is communicated with the smaller end of the opening of the contracting end; The flaring section is arranged at one end of the homogenizing section, which is far away from the shrinkage section, the flaring section is of a funnel-shaped structure, the smaller opening end of the flaring section is connected with the end part of the homogenizing section, the diameter ratio of the openings at the two ends of the shrinkage section is 4:3, the diameter ratio of the length of the shrinkage section to the smaller opening end of the shrinkage section is 5:3, and the shrinkage section, the homogenizing section and the flaring section are all provided with temperature senso