Novel heating furnace wire lead welding structure

Abstract

A new heating furnace wire lead welding structure, including the spiral furnace wire installed on the furnace wire loading porcelain pipe and the furnace wire lead wire electrically connected with the spiral furnace wire, the outgoing line end of the spiral furnace wire is formed by the bending mode to form a bending section, the transition connecting sleeve is fixedly connected with the end of the bending section, and the transition connecting sleeve is welded with the furnace wire lead wire into an integrated structure. The utility model discloses through optimization design, and the outgoing line end of the furnace wire is bent into the character type lower end and is arranged together with the end of the furnace wire lead wire and is welded through the transition connecting sleeve, so that the outgoing line end of the furnace wire is bent into the character type and offsets the furnace wire lead wire extension caused by the thermal expansion of the furnace wire lead wire, avoids the occurrence of the situation that the furnace wire lead wire extension caused by the thermal expansion pulls the spiral furnace wire, causes the end furnace wire to shake the circle, separates the furnace wire loading porcelain pipe, causes the contact short circuit between the furnace wire and other parts, improves the firmness of the furnace wire connection, and increases the service life of the furnace wire.

Description

Technical Field

[0010]

[0001] The utility model relates to the technical field of the installation of heating wires in a heating furnace, and particularly relates to a novel welding structure for the lead wire of the heating wire of a heating furnace. Background Technique

[0002] As is well known, a glass heating furnace is an important device in the production process of tempered glass. The existing glass heating furnace usually uses the method of electric heating wires for heating. The installation method of the heating wires in the glass heating furnace is to wind the heating wires around the heating wire supporting porcelain tube in a spiral shape, and the heating wires are positioned by positioning porcelain pins to prevent the heating wires from creeping and sticking together due to heating, resulting in a short circuit; the lead wires of the heating wires are directly welded to the two end outlet ends of the spiral shape of the heating wires.

[0003] The above existing installation structure is not firm enough in positioning the lead wire end of the heating wire. During use, the lead wire of the heating wire expands due to heat, causing the lead wire of the heating wire to extend, and then pulling the spiral heating wire, which is extremely likely to cause the end heating wire to shake and break away from the heating wire supporting porcelain tube, often resulting in situations such as short circuits between the heating wires or between the heating wire and other parts; in addition, because the lead wire of the heating wire expands due to heat, causing the lead wire of the heating wire to extend, pulling the welding part with the heating wire, it is extremely likely to break the weld seam, resulting in an open circuit of the heating wire and affecting the normal production of the heating furnace. Content of the Utility Model

[0004] The purpose of the utility model is to provide a novel welding structure for the lead wire of the heating wire of a heating furnace. This solution can improve the firmness of the connection of the heating wire and increase the service life of the heating wire.

[0005] The technical solution adopted by the utility model is: a novel welding structure for the lead wire of the heating wire of a heating furnace, which includes a spiral heating wire installed on a heating wire supporting porcelain tube and a lead wire of the heating wire electrically connected to the spiral heating wire. The outlet end of the spiral heating wire forms a bent section by bending, and a transition connecting sleeve is fixedly connected to the end of the bent section, and is welded to the lead wire of the heating wire through the transition connecting sleeve to form an integral structure.

[0006] As a preferred solution, the bent section at the outlet end of the spiral heating wire is in a shape of "J".

[0007] As a preferred solution, the outlet end of the spiral heating wire is fixedly connected to the transition connecting sleeve by welding.

[0008] As a preferred solution, the transition connecting sleeve and the lead wire of the heating wire are arranged side by side and fixedly connected by welding.

[0009] As a preferred solution, the parallel welding length of the transition connecting sleeve and the lead wire of the heating wire is 5 to 6 times the diameter of the lead wire of the heating wire.

[0010] As a preferred embodiment, the transition connecting sleeve is a hollow sleeve structure with a notch on one side. After the spiral heating wire passes through the transition connecting sleeve, a portion of it is exposed to the outside through the notch and fixed to the transition connecting sleeve as an integral structure by welding.

[0011] As a preferred option, the ceramic tube for holding the heating wire is also equipped with positioning ceramic pins for positioning the spiral heating wire.

[0012] The beneficial effects of this utility model are:

[0013] To address the shortcomings of existing technologies, this solution provides a novel welding structure for furnace wire leads. By optimizing the structure, the robustness of the wire connection is improved, increasing the service life of the wire. Specifically, the wire lead end is bent into a "Z" shape, with the lower end threaded through a transition connecting sleeve and welded parallel to the wire lead end. This "Z" shape offsets the elongation of the wire lead due to thermal expansion, preventing the wire from stretching and pulling on the spiral wire, causing the end wire to shake, detach from the ceramic tube, or short-circuit between or between the wires and other components.

[0014] Further optimizations are made as follows: Considering the relatively thin heating wires of the heating furnace, with a diameter generally between φ2 and φ5 mm, resulting in very poor welding reliability, the transition connecting sleeve is designed as a hollow sleeve structure with a notch milled on one side. After the lead-out end of the spiral heating wire passes through the transition connecting sleeve, a portion is exposed to the outside through the notch. The exposed portion is fixedly connected to the transition connecting sleeve by welding to form an integral structure. The transition connecting sleeve and the end of the heating wire lead-out are welded side by side, which strengthens the weld and solves the problem of the heating wire lead-out elongation caused by thermal expansion, which pulls on the weld joint and causes the weld to break, resulting in a broken circuit. The new heating furnace heating wire lead-out welding structure defined in this solution has the advantages of reliable connection and low cost, high installation efficiency, and good strength at the connection of the heating wire, greatly increasing the service life of the heating wire. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 for Figure 1Schematic diagram of the structure of the intermediate transition connecting sleeve.

[0018] Reference numerals: 1, spiral heating wire; 11, bent section; 2, porcelain tube for containing heating wire; 3, positioning porcelain pin; 4, transition connecting sleeve; 41, notch; 5, heating wire lead-out wire. Specific embodiments

[0019] Hereinafter, the present utility model will be specifically described by way of exemplary embodiments. However, it should be understood that, without further description, the elements, structures, and features in one embodiment can also be beneficially combined into other embodiments.

[0020] It should be noted that: Unless otherwise defined, the technical terms or scientific terms used herein should have the ordinary meaning as understood by those of ordinary skill in the field to which the present utility model pertains; the words such as "a", "one", or "the" used in the specification and claims of the present utility model patent application do not express a quantity limitation, but rather indicate the existence of at least one; the words such as "comprising" or "including" etc. indicate that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, but do not exclude other elements or objects having the same function.

[0021] In order to more clearly describe the specific structural composition of a novel heating furnace heating wire lead welding structure, in combination with the attached Figure 1-2 This embodiment will be described in detail:

[0022] As shown in the figure, a novel heating furnace heating wire lead welding structure includes a spiral heating wire 1 installed on a porcelain tube 2 for containing the heating wire and a heating wire lead-out wire 5 electrically connected to the spiral heating wire. A positioning porcelain pin 3 for positioning the spiral heating wire 1 is also provided on the porcelain tube 2 for containing the heating wire. The outgoing end of the spiral heating wire 1 first forms a bent section 11 by bending. A transition connecting sleeve 4 is fixedly connected to the end of the bent section 11. The outgoing end of the spiral heating wire 1, the heating wire lead-out wire 5, and the transition connecting sleeve 3 are fixed into an integral structure by welding.

[0023] In this embodiment, the bent section at the outgoing end of the spiral heating wire is in a shape of "J", and bending it into a "J" shape offsets the elongation of the heating wire lead caused by thermal expansion, thereby avoiding the occurrence of situations such as the heating wire lead elongating due to thermal expansion and pulling the spiral heating wire, resulting in the end heating wire shaking and detaching from the porcelain tube for containing the heating wire, causing short circuits between the heating wires or between the heating wire and other parts.

[0024] In this embodiment, considering that the heating furnace wire is relatively thin, with a diameter generally between φ2 and φ5 mm, the welding reliability is very poor. Therefore, the transition connecting sleeve 4 is designed as a hollow sleeve structure, with a notch 41 milled on one side. A step is milled along half the length of the transition connecting sleeve to a depth one-third of the exposed inner hole. The inner hole of the transition connecting sleeve 4 matches the outer diameter of the heating wire outlet end. After the outlet end of the spiral heating wire 1 passes through the transition connecting sleeve 4, a portion is exposed through the notch 41. The exposed portion is fixedly connected to the transition connecting sleeve 4 by welding to form an integral structure. The heating wire lead-out wire 5 is welded and fixed together with the transition connecting sleeve 4 in parallel. The parallel welding length is 5 to 6 times the diameter of the heating wire lead-out wire. Figure 1 As can be seen from the diagram, the furnace wire lead 5 is welded to the outer wall of the pipe without a notch on one side of the transition connecting sleeve 4. In this scheme, the transition connecting sleeve 4 and the end of the furnace wire lead 5 are welded together side by side, which plays the role of reinforcing the weld and solving the problem of the furnace wire lead being extended due to thermal expansion, pulling on the welded part of the furnace wire and causing the weld to break, resulting in a broken circuit of the furnace wire.

[0025] The parts not described in detail in the above embodiments are existing technologies.

[0026] It should be noted that although the present invention has been described through the above embodiments, there may be other various embodiments of the present invention. Without departing from the spirit and scope of the present invention, those skilled in the art can obviously make various corresponding changes and modifications to the present invention, but all such changes and modifications should fall within the scope of protection of the appended claims and their equivalents.

Claims

1. A novel heating furnace wire lead welding structure, comprising a spiral heating wire mounted on a ceramic tube for mounting the heating wire and a wire lead electrically connected to the spiral heating wire, characterized in that: The outlet end of the spiral heating wire forms a bent section by bending, and a transition connecting sleeve is fixedly connected to the end of the bent section, and is welded to the heating wire lead-out wire through the transition connecting sleeve to form an integral structure.

2. The novel heating furnace wire lead welding structure according to claim 1, characterized in that: The bent section at the outlet end of the spiral heating wire is in a shape of "J".

3. The novel heating furnace wire lead welding structure according to claim 1, characterized in that: The outlet end of the spiral heating wire and the transition connecting sleeve are fixedly connected by welding.

4. The novel heating furnace wire lead welding structure according to claim 3, characterized in that: The transition connecting sleeve and the heating wire lead-out wire are arranged side by side and fixedly connected by welding.

5. The novel heating furnace wire lead welding structure according to claim 4, characterized in that: The parallel welding length of the transition connecting sleeve and the heating wire lead-out wire is 5 to 6 times the diameter of the heating wire lead-out wire.

6. The novel heating furnace wire lead welding structure according to claim 4, characterized in that: The transition connecting sleeve is a hollow sleeve structure, and a notch is provided on one side thereof. After the outlet end of the spiral heating wire passes through the transition connecting sleeve, a part thereof is exposed outside through the notch and is fixedly integrated with the transition connecting sleeve by welding.

7. The novel heating furnace wire lead welding structure according to claim 1, characterized in that: A positioning porcelain pin for positioning the spiral heating wire is further provided on the porcelain tube for loading the heating wire.

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