RU2029741C1 - Flow feeder replacement method - Google Patents

Abstract

FIELD: replacement of flow feeder on glass filament production unit in one stage. SUBSTANCE: method involves dismounting burnt flow feeder and mounting new flow feeder; effectuating dismounting by heating crystallized glass disposed in annular space between burnt flow feeder and dismounting device, which is preliminarily installed coaxially relative to flow feeder to be subsequently mounted; upon burning of flow feeder, disconnecting upper current supplying arrangement of flow feeder from common terminal; changing-over current conducting bus from lower current supplying arrangement of flow feeder to current supplying arrangement of dismounting device; heating dismounting device till crystallized glass is softened; releasing and withdrawing burnt flow feeder from feeding system; disconnecting power source from dismounting device; cleaning site for receiving new flow feeder; mounting it; connecting upper current supplying arrangement to common terminal and changing-over current conducting bus from dismounting device current supplying arrangement to lower current supplying arrangement of new flow feeder. EFFECT: increased efficiency of method. 1 dwg

Description

 The invention relates to methods for replacing a jet feeder in plants for the production of glass fiber with a one-step method and can be used in enterprises for the production of glass beads and glass forming.

 In the production process of glass fiber, a single-stage method uses a jet feeder to feed the molten glass into a spinneret feeder and then process it into fibers. Jet feeders are also used in the production of glass beads and in the formation of glass, when it is necessary to ensure the supply of molten glass with a given flow rate and the required viscosity. In the event that the jet feeder leaves the stream, it becomes necessary to replace it, which, with the existing method, is accompanied by high labor costs, requires a lot of time, and leads to destruction of the refractory of the bottom of the feeder cell [1].

 In accordance with the long-standing practice at the industry factories, no special methods and devices are used to replace the burned-out jet feeder and dismantling is done by manually hollowing out crystallized glass between the burned-out jet feeder and the bottom of the feeder cell using a scarpel (chisel) and a jackhammer. In this case, the supply of energy (gas, electricity) to the cell with the burned feeder is turned off, cooled by blowing air or spraying water on the bottom area of the feeder cell, and the process of extracting the burned jet feeder is accompanied by the expenditure of great physical effort at high ambient temperature, long juice of this work and the destruction of the seat in the bottom of the feeder cell, which has to be re-created under the subsequently installed new jet feeder [2].

 All of these negative phenomena that occur when replacing a burnt ink jet feeder with an existing method can be avoided if, instead of the glass hollowing process, a specially developed method is used for this purpose.

 The aim of the invention is to reduce labor costs, shorten the time of work and maintain the integrity of the refractory of the bottom of the feeder cell when dismantling a burned-out and installing a new jet feeder at the installation, for example, to obtain glass fiber by a single-stage method, both with and without power supply (gas, electricity) shutdown ) to this feeder cell.

 The goal is achieved by the fact that the dismantling is carried out by heating and softening the crystallized glass located in the annular gap between the burning jet feeder and a special device for dismantling, which is installed before the installation of the jet feeder, once for the entire period of the feeder before it is launched, subsequently coaxially mounted to the jet feeder and after combustion of the latter, its upper current lead is disconnected from the common clamp, the current-carrying bus is switched from the lower current lead of the jet feeder to the current lead water of the device, heat the device for softening the crystallized glass, release and remove the burned jet feeder from the feeder, turn off the power to the device, clean the seat for a new jet feeder, install it, connect the upper current supply to the common clamp and switch the current-carrying bus from the current supply of the device to the lower current supply of a new jet feeder.

 The drawing shows a diagram of the working cell of the feeder for implementing the method.

 After combustion of the jet feeder 1, its upper current lead is disconnected from the common clamp 3, the current-carrying bus 4 is switched from the lower current lead 5 of the jet feeder to the current lead 6 of the dismantling device 7, which is heated and the jet feeder is removed from it by its own weight, then the power supply is disconnected from the device to prevent the outflow of molten glass from the feeder cell.

 Next, they clean the seat for a new jet feeder, install it, connect the upper current lead 2 to the common clamp 3 and switch the current-carrying bus 4 from the current lead 6 of the device to the lower current lead 5 of the new jet feeder, and the dismantled burner and the installation of a new jet feeder are disconnected, and without shutting off the supply of energy (gas, electricity) to this feeder cell.

 A great advantage of the method of replacing the jet feeder is that all operations are performed with minimal labor, in the shortest possible time and while maintaining the integrity of the refractory of the bottom of the feeder cell.

 Since the dismantling of the burned jet feeder is carried out by releasing it from the crystallized glass 8 by heating and softening the latter, this operation is not time-consuming and takes exactly as much time as is necessary to soften the glass, while completely refractory to the refractory of the bottom of the feeder cell. Also, at maximum labor costs and as soon as possible, a new jet feeder is installed in the seat, and in the proposed method, in contrast to the known method, the refractory for the feeder cell is not destroyed and the time-consuming operation of manufacturing a new seat instead of the destroyed one using the existing method is completely excluded.

 The production verification of the method made it possible to successfully replace the jet feeder at the installation for producing glass fiber with a single-stage method from refractory glass prone to crystallizing melts of low heat transparency, both with and without switching off the energy supply to this cell of the high-temperature feeder with minimal labor, in the shortest possible time and while maintaining the integrity of the refractory bottom of the feeder cell.

Claims (1)

 METHOD FOR REPLACING AN INJECTOR FEEDER in a plant for producing glass fiber by a single-stage method by dismantling a burned-out and installing a new feeder, characterized in that the dismantling is performed by heating the crystallized glass located in the annular gap between the burned-out jet feeder and the dismantling device, which is subsequently installed coaxially to the feeder, and after the combustion of the latter, its upper current lead is disconnected from the common clamp, the current-carrying bus is switched from the lower current supply of the jet feeder to the current supply of the device, heat the device until the crystallized glass softens, release and burn the burned jet feeder from the feeder, disconnect the power supply from the device, clean the seat for a new jet feeder, install it, connect the upper current supply to the common clamp and switch the current-carrying a bus from the device’s current supply to the lower current supply of the new jet feeder.

Images