CN213363307U

CN213363307U - Spiral heating device for sintering furnace

Info

Publication number: CN213363307U
Application number: CN202022332431.1U
Authority: CN
Inventors: 姜岩; 张亚; 张小元; 陈永强
Original assignee: Shengliheng Ningxia Vacuum Technology Co ltd
Current assignee: Shengliheng Ningxia Vacuum Technology Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-04
Anticipated expiration: 2030-10-19

Abstract

A spiral heating device for a sintering furnace comprises a plurality of heating bodies, a connecting plate and electrodes, wherein the connecting plate is used for installing the heating bodies, the connecting plate and the heating bodies are arranged side by side to form a closed-shaped thermal field, the heating bodies form a plane structure or an arc-shaped surface structure by a plurality of mutually-nested spiral resistance wires, and the electrodes are connected with the connecting plate and used for being connected with an external power supply; two adjacent spiral resistance wires are mutually overlapped and fixed, and the resistance wires do not need to be additionally fixed, so that the stability is good; the adjacent resistance wires have large contact area, high conductivity, high power supply and low loss. The surface area of the spiral heating wire is at least twice of that of the original Z-shaped bent heating wire, and the heating power is also twice of that of the original Z-shaped bent heating wire.

Description

Spiral heating device for sintering furnace

Technical Field

The utility model relates to a high temperature vacuum sintering technical field especially relates to a spiral heating device for fritting furnace.

Background

The high-temperature vacuum sintering furnace is indispensable equipment for sintering materials, the temperature rise mainly depends on a heater inside a hearth and a sealing heat-insulating structure of a furnace body, the heater is used as an active heating part, and the heating power and the radiation effective area of the heater are the most important parameters influencing the performance of the furnace body.

The original heater adopts the resistance wire to weave and forms, weaves and adopts the Z style of calligraphy side by side, see fig. 1, 2, and a resistance wire traversing of reuse is as fixed, is similar to plane network structure, and its resistance wire low-usage, heating power is also lower, in furnace effective space, and calorific capacity is lower.

Disclosure of Invention

There is a need for a spiral heating device for a sintering furnace.

The utility model provides a spiral heating device for fritting furnace, includes a plurality of heating members, connecting plate, electrode, the connecting plate is used for installing the heating member, and connecting plate and heating member set up side by side, form closed shape thermal field, the planar structure or arcwall face structure are constituteed by a plurality of heliciform resistance wires that overlap each other to the heating member, the electrode is connected with the connecting plate for insert external power source.

Preferably, the connecting plate includes a lower connecting plate and a plurality of upper connecting plates, the lower connecting plate is a long and thin plate body, the upper end surface of the lower connecting plate is provided with a plurality of slots for inserting the heating body, the upper connecting plate is a single body, and each upper connecting plate is provided with a lower slot for inserting the heating body.

Preferably, the shape of the lower connecting plate is square, rectangular or circular.

In the utility model, the single resistance wire is coiled into a spiral shape, so that the effective length of the resistance wire in the unit space is longest, the effective surface area is largest, and the effective heating area is largest; two adjacent spiral resistance wires are mutually overlapped and fixed, and the resistance wires do not need to be additionally fixed, so that the stability is good; the adjacent resistance wires have large contact area, high conductivity, high power supply and low loss. The surface area of the spiral heating wire is at least twice of that of the original Z-shaped bent heating wire, and the heating power is also twice of that of the original Z-shaped bent heating wire.

Drawings

Fig. 1 and 2 are a cross-sectional schematic view and a top schematic view of a heater resistance wire in the prior art.

Fig. 3 and 4 are schematic diagrams of two embodiments of the device.

FIG. 5 is a schematic axial view of a part of the structure of the rectangular device.

Fig. 6, 7 and 8 are a left side view, a front view and a plan view of fig. 5.

FIGS. 9 and 10 are a front view and a top view of the heating element.

In the figure: heating body 10, resistance wire 11, lower connecting plate 21, upper connecting plate 22, electrode 30.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 3-10, the embodiment of the present invention provides a spiral heating device for sintering furnace, including a plurality of heating members 10, a connecting plate, and an electrode 30, the connecting plate is used for installing the heating member 10, and the connecting plate and the heating member 10 are arranged side by side to form a closed shape thermal field (for example, a rectangle, a square, or a quasi-circular shape can be set according to the shape of the connecting plate, the connecting plate is a rectangle, a square, or a quasi-circular shape, and then the heating member 10 can surround to form a corresponding shape after being installed, and the corresponding shape forms the thermal field inside), the heating member 10 is a planar structure or an arc structure composed of a plurality of mutually nested spiral resistance wires 11, and the electrode 30 is connected with the connecting plate and used for.

Further, the connecting plate includes a lower connecting plate 21 and a plurality of upper connecting plates 22, the lower connecting plate 21 is a long and thin plate, the upper end surface of the lower connecting plate is provided with a plurality of slots for inserting the heating body 10, the upper connecting plates 22 are single pieces, and each upper connecting plate 22 is provided with a lower slot for inserting the heating body 10.

Further, the shape of the lower connecting plate 21 is square, rectangular or circular.

The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.

The above disclosure is only illustrative of the preferred embodiments of the present invention, which should not be taken as limiting the scope of the invention, but rather the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It will be understood by those skilled in the art that all or part of the above-described embodiments may be implemented and equivalents thereof may be made to the claims of the present invention while remaining within the scope of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A spiral heating apparatus for a sintering furnace, characterized in that: the heating device comprises a plurality of heating bodies, a connecting plate and electrodes, wherein the connecting plate is used for installing the heating bodies, the connecting plate and the heating bodies are arranged side by side to form a closed-shaped thermal field, the heating bodies form a plane structure or an arc-shaped surface structure by a plurality of mutually overlapped spiral resistance wires, and the electrodes are connected with the connecting plate and used for being connected into an external power supply.

2. The spiral heating apparatus for a sintering furnace as set forth in claim 1, wherein: the connecting plate comprises a lower connecting plate and a plurality of upper connecting plates, the lower connecting plate is a long and thin plate body, a plurality of slots for inserting the heating bodies are formed in the upper end face of the lower connecting plate, the upper connecting plates are single bodies, and each upper connecting plate is provided with a lower slot for inserting the heating body.

3. The spiral heating apparatus for a sintering furnace as set forth in claim 2, wherein: the shape of the lower connecting plate is square, rectangular or circular.