CN216360458U

CN216360458U - Double-hot-zone glass drawing furnace

Info

Publication number: CN216360458U
Application number: CN202123183772.8U
Authority: CN
Inventors: 李家乐; 廉正刚; 李长松
Original assignee: Wuhan Optical Valley Changyingtong Measurement Co ltd
Current assignee: Wuhan Optical Valley Changyingtong Measurement Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-22
Anticipated expiration: 2031-12-17

Abstract

The utility model provides a double-heating-area glass drawing furnace which comprises an outer shell, wherein the outer shell is provided with an upper port and a lower port, an inner cylinder with two open ends is arranged in the outer shell, two ends of the inner cylinder are respectively communicated with the upper port and the lower port of the outer shell, a heating area is arranged between the outer shell and the inner cylinder, at least two heating wires are arranged in the heating area along the length direction of the inner cylinder, the heating wires surround the outer wall of the inner cylinder, one side of the outer shell is provided with an electric box, a controller is arranged in the electric box, and the controller is electrically connected with the heating wires.

Description

Double-hot-zone glass drawing furnace

Technical Field

The utility model relates to the field of glass drawing and forming, in particular to a double-heat-zone glass drawing furnace.

Background

The wire drawing furnace is mainly applied to a glass processing technology, a glass bar is heated by an electric heating or flame ejector to be melted, and the glass bar falls under the dead weight and is drawn into a filament shape by a traction mechanism at the lower end. The drawing furnace is widely applied to the fields of capillary glass tube forming, optical fiber manufacturing and the like, and in the prior art, the CN 109836036A records in an optical fiber drawing furnace and an optical fiber drawing method.

SUMMERY OF THE UTILITY MODEL

The utility model provides a double-heating-zone glass drawing furnace, which solves the problems that the traditional single heating zone can not control the temperature in a partitioned mode and is difficult to produce special-shaped glass products.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a two hot district glass wire drawing stoves, includes the shell body, and the shell body is equipped with upper port and lower port, is equipped with both ends open-ended inner tube in the shell body, and the inner tube both ends communicate the upper port and the lower port of shell body respectively, are equipped with the zone of heating between shell body and the inner tube, are equipped with two at least heater strips along inner tube length direction in the zone of heating, and the heater strip encircles the inner tube outer wall, and shell body one side is equipped with electric box, is equipped with the controller in the electric box, and the controller is connected with the heater strip electricity.

In a preferred scheme, at least one partition board is arranged in the heating zone, the partition boards partition the heating zone into a plurality of chambers, each chamber is internally provided with a thermocouple, and the thermocouples are electrically connected with the controller.

In a preferred scheme, each cavity is filled with a heat insulation material.

In a preferred embodiment, the upper port of the outer housing is provided with a replaceable sleeve.

In the preferred scheme, a furnace cover device is arranged at a lower port of the outer shell and comprises a base, a first fan cover and a second fan cover, one ends of the first fan cover and the second fan cover are hinged with the base, and semicircular holes are formed in the middle of the first fan cover and the second fan cover.

In the preferred scheme, the semicircular holes of the first fan cover and the second fan cover are provided with clamping grooves, the first fan cover and the second fan cover are combined to form a ring groove, and the first fan cover and the second fan cover are also provided with heat insulation sheets with holes, and the heat insulation sheets with the holes are clamped in the ring groove.

In a preferable scheme, one end of the first fan cover and one end of the second fan cover are provided with handles.

The utility model has the beneficial effects that: the double heating wires are adopted to heat the inner cylinder, two sections of regions with different temperatures are arranged in the inner cylinder along the length direction and are used for heating and melting the glass rod material, and different heating processes are conveniently adopted to manufacture special-shaped glass products with different shapes; in the preferred scheme, each heating zone is provided with a thermocouple, so that the temperature of each zone is monitored in real time, and is conveniently fed back to a controller to adjust the temperature; in the preferred scheme, the sleeve and the perforated heat-insulating sheet are convenient to replace, so that the sleeve and the perforated heat-insulating sheet can be conveniently adapted to glass rod materials with different diameters and different drawing speeds.

Drawings

The utility model is further illustrated by the following figures and examples.

FIG. 1 is a schematic of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic view of the furnace lid assembly of the present invention.

Fig. 4 is a schematic view showing the opening of the lid assembly of the present invention.

In the figure: an outer shell 1; an upper cover 2; an inner cylinder 3; a heating zone 4; a partition 401; a first heating wire 5; a second heating wire 6; a furnace lid device 7; a base 701; a first fan cover 702; a second fan cover 703; perforated thermal insulating sheets 704; a card slot 705; a handle 706; an electrical box 8; a thermocouple 9; a controller 10; a sleeve 11; an upper mounting sleeve 12; and a lower mounting sleeve 13.

Detailed Description

As shown in fig. 1-4, a double-heat-zone glass drawing furnace comprises an outer shell 1, wherein the outer shell 1 is composed of a U-shaped cylinder and an openable upper cover 2, and is convenient for installation of internal devices, materials can be stainless steel, the outer shell 1 is provided with an upper port and a lower port for feeding and discharging materials, an inner cylinder 3 with two open ends is arranged in the outer shell 1, the inner cylinder 3 is made of ceramic materials and can bear high temperature while conducting heat uniformly, two ends of the inner cylinder 3 are respectively communicated with the upper port and the lower port of the outer shell 1, a heating zone 4 is arranged between the outer shell 1 and the inner cylinder 3, a plurality of heating wires are arranged in the heating zone 4, for example, a second heating wire 6 is arranged below a first heating wire 5, the first heating wire 5 and the second heating wire 6 surround the outer wall of the inner cylinder 3 and are used for transferring temperature to the inner cylinder 3, an electrical box 8 is arranged on one side of the outer shell 1, and a controller 10 is arranged in the electrical box 8, the controller 10 is electrically connected to the first and

second heating wires

5 and 6 for adjusting the temperature of the heating wires.

The glass rod material enters from the upper port, after heating and melting, the lower end drops by self weight and becomes thinner, and the dropping end drops from the lower port.

In a preferred scheme, a partition plate 401 is arranged in the heating zone 4, the partition plate 401 is made of a heat insulating material such as a mica sheet, the partition plate 401 divides the heating zone 4 into an upper chamber and a lower chamber, thermocouples 9 are arranged in the upper chamber and the lower chamber, the thermocouples 9 are electrically connected with the controller 10, the heating zone 4 is divided and is insulated by the partition plate 401, the temperatures of the chambers are relatively independent, the chambers cannot interfere with each other, and the detection of the thermocouples 9 is more accurate.

In the preferred scheme, the upper chamber and the lower chamber are filled with heat insulation materials, and the heat insulation materials are made of ceramic fibers and can resist higher temperature.

In the preferred scheme, the upper port of the outer shell 1 is provided with a replaceable sleeve 11, the outer ring is fixed with the upper cover 2 through an upper mounting sleeve 12, the diameters of through holes of different sleeves 11 are different, the diameters are matched with the outer diameter of a glass bar as much as possible, and gaps are reduced, so that the temperature dissipation in the furnace is reduced.

In a preferable scheme, a furnace cover device 7 is arranged at a lower port of the outer shell 1, the furnace cover device 7 comprises a base 701, a first fan cover 702 and a second fan cover 703, one end of the first fan cover 702 and one end of the second fan cover 703 are hinged to the base 701, semicircular holes are formed in the middle of the first fan cover 702 and the middle of the second fan cover 703, the first fan cover 702 and the second fan cover 703 can rotate to embrace, and the semicircular holes form a whole circular hole for allowing the falling end of the glass rod to pass through.

In the preferred scheme, semicircular clamping grooves 705 are formed in semicircular holes of the first fan cover 702 and the second fan cover 703, the first fan cover 702 and the second fan cover 703 are encircled to form a circular ring groove, a heat insulation sheet 704 with holes is further arranged, and the heat insulation sheet 704 with holes is clamped in the ring groove.

In a preferred scheme, a handle 706 is arranged at one end of the first fan cover 702 and one end of the second fan cover 703, so that the first fan cover 702 and the second fan cover 703 can be opened by manual operation conveniently, and the perforated heat insulation sheet 704 can be replaced.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. A glass drawing furnace with double hot areas is characterized in that: including shell body (1), shell body (1) is equipped with upper port and lower port, be equipped with both ends open-ended inner tube (3) in shell body (1), inner tube (3) both ends communicate the upper port and the lower port of shell body (1) respectively, be equipped with zone of heating (4) between shell body (1) and inner tube (3), be equipped with two at least heater strips along inner tube (3) length direction in the zone of heating (4), the heater strip encircles inner tube (3) outer wall, shell body (1) one side is equipped with electric box (8), be equipped with controller (10) in electric box (8), controller (10) are connected with the heater strip electricity.

2. The dual hot zone glass draw furnace of claim 1, wherein: at least one partition board (401) is arranged in the heating area (4), the partition board (401) partitions the heating area (4) into a plurality of chambers, a thermocouple (9) is arranged in each chamber, and the thermocouples (9) are electrically connected with the controller (10).

3. The dual hot zone glass draw furnace of claim 2, wherein: and heat insulation materials are filled in the cavities.

4. The dual hot zone glass draw furnace of claim 1, wherein: the upper port of the outer shell (1) is provided with a replaceable sleeve (11).

5. The dual hot zone glass draw furnace of claim 1, wherein: the furnace cover device (7) is arranged at the lower end opening of the outer shell (1), the furnace cover device (7) comprises a base (701), a first fan cover (702) and a second fan cover (703), one ends of the first fan cover (702) and the second fan cover (703) are hinged to the base (701), and semicircular holes are formed in the middle parts of the first fan cover (702) and the second fan cover (703).

6. The dual hot zone glass draw furnace of claim 5, wherein: a clamping groove (705) is formed in semicircular holes of the first fan cover (702) and the second fan cover (703), the first fan cover (702) and the second fan cover (703) are encircled to form a ring groove, a heat insulation sheet (704) with holes is further arranged, and the heat insulation sheet (704) with holes is clamped in the ring groove.

7. The dual hot zone glass draw furnace of claim 5, wherein: one end of the first fan cover (702) and one end of the second fan cover (703) are provided with handles (706).