Double-insulation protection electric heating tube

Abstract

The utility model relates to the technical field of electric heating tubes, and discloses a double insulation protection electric heating tube, which comprises a shell, a heating assembly is arranged in the shell, the heating assembly comprises a heating wire, a plurality of supporting rods are arranged in the heating wire, an insulation assembly comprises insulation filling materials, a first insulation layer is arranged on the surface of the shell, and a second insulation layer is arranged on the surface of the shell. The inner wall of the heating wire can be supported through the supporting rods, so that the heating wire is prevented from being knotted, short circuit or open circuit of the heating wire is avoided, the heating wire is prevented from making contact with the inner wall of the shell, and current on the heating wire is prevented from being conducted to the shell; and meanwhile, under the action of the insulating filling material, the insulating property of the interior of the shell is improved, and under the action of the first insulating layer, the insulating property of the surface of the shell is improved, so that the shell is safer in use.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tubes, in particular to a double-insulated protection electric heating tube. Background Art

[0002] The electric heating tube is a tubular electric heating element. It is composed of a metal tube, a spiral resistance wire and crystalline magnesium oxide powder. Electric heating tube products are generally made of high-quality imported stainless steel tubes, imported high-temperature magnesium oxide powder, high-quality heating wire and other materials to make heating elements, and other structural parts are made of stainless steel. It has excellent overall performance, ultra-long life and is easy to maintain.

[0003] The insulation effect of existing electric heating tubes is low, and the heating wire in the electric heating tube is prone to knotting inside the shell, which can easily cause the heating wire to short-circuit or break after being powered on, affecting the normal use of the heating wire. At the same time, the heating wire is prone to contact with the inner wall of the shell, which can easily cause the shell to be electrified. Therefore, we propose a double-insulated protection electric heating tube. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the deficiencies in the prior art, the present invention provides a double-insulated protection electric heating tube, which has the advantage of supporting the inner wall of the heating wire by setting a support rod, thereby preventing the heating wire from becoming tangled, preventing the heating wire from short-circuiting or breaking, and preventing the heating wire from contacting the inner wall of the shell, preventing the current on the heating wire from being conducted to the shell, causing the shell to be charged. At the same time, under the action of the insulating filling material, the insulation performance inside the shell is increased, and under the action of the first insulating layer, the insulation performance of the shell surface is increased, making the shell safer when in use. It solves the problems of low insulation effect of existing electric heating tubes, and the heating wire in the electric heating tube is prone to becoming tangled inside the shell, which easily causes the heating wire to short-circuit or break after being powered on, affecting the normal use of the heating wire, and the heating wire is prone to contact with the inner wall of the shell, which easily causes the shell to be charged.

[0006] (2) Technical solution

[0007] In order to achieve the above purpose, by providing a support rod, the inner wall of the heating wire can be propped up, thereby avoiding the phenomenon of the heating wire being tangled, avoiding the heating wire being short-circuited or broken, and avoiding the heating wire from contacting the inner wall of the shell, avoiding the current on the heating wire being conducted to the shell, causing the shell to be charged. At the same time, under the action of the insulating filling material, the insulation performance of the interior of the shell is increased, and under the action of the first insulating layer, the insulation performance of the surface of the shell is increased, making the shell safer when in use. The utility model provides the following technical solutions: A double-insulated protective electric heating tube, including a shell, the interior of the shell includes:

[0008] A heating assembly, the heating assembly comprising a heating wire, wherein a plurality of support rods are provided inside the heating wire;

[0009] An insulating component includes an insulating filling material, a first insulating layer is provided on the surface of the shell, and a second insulating layer is provided on the surface of the first insulating layer. By providing a support rod, the inner wall of the heating wire can be supported, thereby avoiding the heating wire from tangling, avoiding the heating wire from short-circuiting or breaking, and avoiding the heating wire from contacting the inner wall of the shell, avoiding the current on the heating wire from being conducted to the shell, causing the shell to be charged. At the same time, under the action of the insulating filling material, the insulation performance inside the shell is increased, and under the action of the first insulating layer, the insulation performance of the shell surface is increased, making the shell safer when in use.

[0010] As a preferred technical solution of the present invention, the inner wall of the first insulating layer is fixedly connected to the surface of the outer shell by high-temperature glue, and the inner wall of the second insulating layer is fixedly connected to the surface of the first insulating layer by high-temperature glue. Under the action of the first insulating layer, the insulation performance of the outer shell surface is increased.

[0011] As an optimal technical solution of the present invention, lead-out rods are provided on both the left and right sides of the interior of the shell, and the opposite ends of the two lead-out rods are fixedly connected with mounting fasteners. With the action of the mounting fasteners, the lead-out rods can be easily installed on the shell.

[0012] As an optimal technical solution of the present invention, the inner walls of the two mounting fasteners are fixedly connected to the left and right ends of the outer shell, the left and right ends of the multiple support rods are respectively fixedly connected to the opposite side of the lead-out rod, and the left and right ends of the heating wire are respectively fixedly connected to the opposite side of the lead-out rod. Under the action of the lead-out rod, the heating wire and the support rod are facilitated to be installed.

[0013] As a preferred technical solution of the present invention, the opposite ends of the two mounting fasteners are fixedly connected with insulating ends, and the opposite sides of the two insulating ends are fixedly connected with terminal posts. Under the action of the terminal posts, the electric heating tube can be easily installed on the equipment in use.

[0014] As an optimal technical solution of the present invention, the materials of the support rod and the insulating end are both zirconia ceramics, which have the advantages of high hardness, high toughness, high bending strength, high wear resistance, low friction coefficient, good insulation, strong corrosion resistance, no static electricity, high temperature resistance, and excellent thermal insulation performance.

[0015] As a preferred technical solution of the present invention, the material of the first insulating layer is mica, and the material of the second insulating layer is carbon fiber. Mica has excellent thermal conductivity and can effectively conduct and disperse heat, prevent equipment from overheating and improve work efficiency. Mica has good electrical insulation performance, and carbon fiber has good high temperature resistance and its melting point is very high, so it can maintain stable performance in high temperature environments.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a double-insulated protection electric heating tube, which has the following beneficial effects:

[0018] 1. The electric heating tube can support the inner wall of the heating wire by providing a support rod, thereby preventing the heating wire from tangling, short-circuiting or breaking, and contacting the heating wire with the inner wall of the shell, preventing the current on the heating wire from being conducted to the shell, causing the shell to be charged. At the same time, under the action of the insulating filling material, the insulation performance inside the shell is increased, and under the action of the first insulating layer, the insulation performance of the shell surface is increased, making the shell safer when in use.

[0019] 2. The electric heating tube, support rod and insulating end are made of zirconia ceramics, which makes the support rod and insulating end have the advantages of high hardness, high toughness, high bending strength, high wear resistance, low friction coefficient, good insulation, strong corrosion resistance, no static electricity, high temperature resistance, and excellent thermal insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the overall front side cross-sectional structure of the utility model.

[0022] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of part A.

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the heating component of the present invention.

[0024] In the figure: 1. Shell; 2. Heating component; 21. Heating wire; 22. Support rod; 3. Insulation component; 31. Insulation filling material; 32. First insulation layer; 33. Second insulation layer; 4. Lead rod; 41. Mounting fastener; 42. Insulation end; 43. Terminal. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] Reference Figure 1-4 , which is the first embodiment of the utility model, provides a double-insulated protection electric heating tube, including a shell 1, the interior of the shell 1 includes:

[0028] The heating assembly 2 includes a heating wire 21, which is disposed inside the housing 1. A plurality of support rods 22 are disposed inside the heating wire 21. The support rods 22 are evenly distributed inside the heating wire 21, and the surfaces of the support rods 22 are in contact with the inner wall of the heating wire 21.

[0029] The insulating component 3 includes an insulating filling material 31 . The insulating filling material 31 is disposed inside the housing 1 . A first insulating layer 32 is disposed on the surface of the housing 1 . A second insulating layer 33 is disposed on the surface of the first insulating layer 32 .

[0030] The inner wall of the first insulating layer 32 is fixedly connected to the surface of the housing 1 by means of high-temperature glue, and the inner wall of the second insulating layer 33 is fixedly connected to the surface of the first insulating layer 32 by means of high-temperature glue.

[0031] Lead rods 4 are provided on both the left and right sides of the housing 1 , and mounting fasteners 41 are fixedly connected to opposite ends of the two lead rods 4 .

[0032] The inner walls of the two mounting fasteners 41 are fixedly connected to the left and right ends of the outer shell 1, the left and right ends of the multiple support rods 22 are fixedly connected to the opposite side of the lead-out rod 4, and the left and right ends of the heating wire 21 are fixedly connected to the opposite side of the lead-out rod 4.

[0033] The opposite ends of the two mounting fasteners 41 are fixedly connected to the insulating ends 42 , and the opposite sides of the two insulating ends 42 are fixedly connected to the terminal posts 43 .

[0034] During use, the electric heating tube is installed at the location of use and is installed with the installed equipment through the terminal 43 on the housing 1. The current enters the lead-out rod 4 on the mounting fastener 41 through the terminal 43, and the current flows through the heating wire 21, causing the heating wire 21 to heat up;

[0035] Under the action of the insulating end 42, the current between the terminal 43 and the installation equipment is insulated and protected. Under the action of the support rod 22, the heating wire 21 is supported to prevent the heating wire 21 from being tangled and to prevent the heating wire 21 from contacting the inner wall of the shell 1. Under the action of the insulating filler material 31, the heating wire 21 in the shell 1 is insulated and protected. Under the action of the first insulating layer 32, the surface of the shell 1 is insulated and protected. Under the action of the second insulating layer 33, the first insulating layer 32 is protected.

[0036] Example 2

[0037] Reference Figure 1-4 , which is the second embodiment of the present invention, the materials of the support rod 22 and the insulating end 42 are both zirconia ceramics.

[0038] The first insulating layer 32 is made of mica, and the second insulating layer 33 is made of carbon fiber.

[0039] During use, the support rod 22 is made of zirconia ceramics to increase the high temperature resistance of the support rod 22. At the same time, the support rod 22 has insulation performance and high strength, which reduces damage to the support rod 22. The insulating end 42 is made of zirconia ceramics, so that the insulating end 42 has insulation performance;

[0040] The first insulating layer 32 is made of mica, which increases the insulation performance of the surface of the housing 1 and has high thermal conductivity. The second insulating layer 33 protects the first insulating layer 32 to prevent the first insulating layer 32 from being broken.

[0041] The remaining structures are the same as those of Example 1.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A double-insulated electric heating tube, comprising a housing (1), characterized in that: The interior of the housing (1) comprises: A heating assembly (2), the heating assembly (2) comprising a heating wire (21), a plurality of support rods (22) being arranged inside the heating wire (21); An insulating component (3), wherein the insulating component (3) includes an insulating filling material (31); a first insulating layer (32) is provided on the surface of the shell (1); a second insulating layer (33) is provided on the surface of the first insulating layer (32); an inner wall of the first insulating layer (32) is fixedly connected to the surface of the shell (1) by means of high-temperature glue; an inner wall of the second insulating layer (33) is fixedly connected to the surface of the first insulating layer (32) by means of high-temperature glue; lead rods (4) are provided on both left and right sides of the interior of the shell (1); the two lead rods (4) ) are fixedly connected to the opposite ends of the two mounting fasteners (41), the inner walls of the two mounting fasteners (41) are fixedly connected to the left and right ends of the outer shell (1), the left and right ends of the plurality of support rods (22) are respectively fixedly connected to the opposite sides of the lead-out rod (4), the left and right ends of the heating wire (21) are respectively fixedly connected to the opposite sides of the lead-out rod (4), the opposite ends of the two mounting fasteners (41) are fixedly connected to the insulating end (42), and the opposite sides of the two insulating ends (42) are fixedly connected to the terminal (43).

2. The double-insulated protection electric heating tube according to claim 1, characterized in that: The support rod (22) and the insulating end (42) are both made of zirconia ceramics.

3. The double-insulated protection electric heating tube according to claim 2, characterized in that: The material of the first insulating layer (32) is mica, and the material of the second insulating layer (33) is carbon fiber.

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