A sealed electric heating tube

Abstract

The utility model relates to heating pipe technical field especially relates to a sealed electric heating pipe, including mounting seat, the inboard insertion fixed sealing shell of mounting seat, the one end welding fixed of sealing shell has the adapter disc no.

Description

Technical Field

[0001] This utility model relates to the field of heating tube technology, and in particular to a sealed electric heating tube. Background Technology

[0002] Electric heating elements are heating devices widely used in industrial, commercial, and domestic applications. Their basic principle is to generate heat by passing an electric current through a resistance wire, and then transfer that heat to the object or medium that needs to be heated. Due to their high efficiency, safety, and ease of control, electric heating elements have become the preferred choice for many heating applications.

[0003] With the advancement of technology, the design and manufacturing process of electric heating tubes have been continuously improved, resulting in various different types of electric heating tubes. According to the authorized publication number "CN220368817U", a sealed electric heating tube is disclosed. This utility model includes an electric heating tube, with a wire fixed to the top of the heating tube. A first mounting base is assembled between the electric heating tube and the wire, and a plug-in mechanism is assembled between the electric heating tube and the first mounting base. The plug-in mechanism is used for connecting the electric heating tube and the first mounting base. A sealing mechanism is assembled between the plug-in mechanism and the wire to prevent liquid from overflowing along the outside of the wire. Through the structural design of the plug-in mechanism, this utility model facilitates the separation of the electric heating tube from the first mounting base, enabling maintenance personnel to easily disassemble and repair the device, thus improving its safety. Furthermore, through the structural design of the sealing mechanism, the device prevents liquid from boiling and overflowing along the outside of the wire when heating liquid, ensuring the sealing performance of the electric heating tube during use, preventing liquid from flowing into the connection between the wire and the power supply, and extending the service life of the device.

[0004] Currently, most electric heating elements rely solely on screws to secure the sealed outer shell to the connector for a tight fit. While the screws can initially seal the connection between the outer shell and the connector, gaps can still form over time or when exposed to liquids, leading to leaks. Furthermore, the arrangement of the heating wires inside most heating elements is not regular enough. If external impact causes the wires to come into contact with each other, localized overheating or short circuits can easily occur. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned shortcomings in the prior art and to propose a sealed electric heating tube, including a mounting base, a sealing shell is inserted and fixed inside the mounting base, a connecting plate one is welded and fixed to one end of the sealing shell, a connecting plate two is attached to the other side of the connecting plate one, the connecting plate one is fixedly installed to the connecting plate two by a number of screws, a power supply base is fixedly embedded inside the connecting plate two, and a power supply wire is provided on the outward side of the power supply base;

[0006] Two symmetrically distributed support rods are fixedly installed on the side of the connecting plate two near the sealing shell. Support plates are fixed between the support rods distributed on both sides. There are several groups of support plates along the support rods, and they are equidistant from each other.

[0007] The support plate has several resistance wires distributed throughout it, and one end of each resistance wire is fixedly connected to the power base for power supply.

[0008] In detail, the second connecting plate is fixedly installed with an anti-contact layer on one side of the resistance wire. The surface of the anti-contact layer is provided with several hollow holes. The inner side of the anti-contact layer covers the surface of several resistance wires. The anti-contact layer is made of glass fiber material.

[0009] In detail, two symmetrically distributed mounting brackets are fixedly mounted on the surface of the mounting base. The mounting brackets have mounting holes on their surfaces, and the inner wall of the mounting holes is either smooth or threaded.

[0010] In detail, the mounting base, support rod, support plate, and mounting bracket are all made of ceramic material.

[0011] In detail, the sealing shell, connecting plate one, and connecting plate two are all made of stainless steel.

[0012] In detail, a sealing groove 1 is provided on one side of the connecting plate 1, and a sealing groove 2 is provided on the side of the connecting plate 2 near the connecting plate 1. Both sealing groove 1 and sealing groove 2 are annular structures and have the same size and specifications. Sealing groove 1 and sealing groove 2 fit together and cover each other.

[0013] In detail, the same sealing ring is slidably fitted inside both the first sealing groove and the second sealing groove, and the sealing ring is made of aluminum alloy.

[0014] To achieve the above objectives, the present invention adopts the following technical solution:

[0015] The design scheme proposed in this utility model has the following beneficial effects in application:

[0016] 1. This solution adopts a dual protection structure of a sealed outer shell and an anti-contact layer. The sealed outer shell is made of stainless steel to ensure that the internal heating element is isolated from the outside. The anti-contact layer is made of fiberglass material and has perforations, which not only prevents the resistance wire from directly contacting the outer shell and causing short circuits or damage, but also ensures efficient heat dissipation. The ceramic material design of the support rod and support plate further improves the insulation and high temperature resistance performance, ensuring that the resistance wire is neatly arranged and properly tensioned, avoiding bending losses and mutual contact, and significantly improving the service life and safety of the heating element.

[0017] 2. As described in 1, the combination design of connecting plate one and connecting plate two, along with the sealing groove and aluminum alloy sealing ring, forms a reliable sealing cavity structure, effectively preventing the intrusion of external moisture or contaminants, extending the service life of internal components. The mounting base is equipped with a ceramic mounting bracket, providing multiple fixing methods (smooth surface or threaded hole), facilitating quick installation and adapting to different scenario requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 This is an enlarged schematic diagram of point A in this utility model;

[0021] Figure 4 This is an enlarged schematic diagram of section B of this utility model;

[0022] Figure 5 This is a schematic diagram of the anti-contact layer structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the sealing ring structure of this utility model.

[0024] In the diagram: 1. Mounting base; 11. Sealed outer shell; 12. Connecting plate one; 13. Connecting plate two; 14. Power supply base; 15. Power transmission line; 16. Screw; 17. Support rod; 18. Support plate; 19. Resistance wire; 2. Anti-contact layer; 21. Hole; 3. Mounting bracket; 31. Mounting hole; 4. Sealing groove one; 41. Sealing groove two; 42. Sealing ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Reference Figures 1-6A sealed electric heating element includes a mounting base 1. A sealing shell 11 is inserted and fixed inside the mounting base 1. The sealing shell 11 is used to protect the heating element and prevent it from contacting the external environment. A connecting plate 12 is welded and fixed to one end of the sealing shell 11. A connecting plate 2 13 is attached to the other side of the connecting plate 12. The connecting plate 12 is fixedly installed to the connecting plate 2 13 by a number of screws 16. A power supply base 14 is fixedly embedded inside the connecting plate 2 13. A power supply wire 15 is provided on the outward side of the power supply base 14. The power supply base 14 is a terminal block that can be installed with a resistance wire 19 and pass current through the resistance wire 19 to heat it and form a heating element.

[0028] Two symmetrically distributed support rods 17 are fixedly installed on the side of the connecting plate 2 13 near the sealing shell 11. A support plate 18 is fixed between the support rods 17 distributed on both sides. Several groups of support plates 18 are arranged along the support rods 17 and are equidistant from each other. The support rods 17 and the support plates 18 can serve as a tensioning arrangement structure for installing several resistance wires 19, ensuring that the resistance wires 19 will not bend and suffer damage, and that adjacent resistance wires 19 will not come into contact with each other.

[0029] Several resistance wires 19 are distributed throughout the interior of the support plate 18. One end of each resistance wire 19 is fixedly connected to the power base 14. The resistance wire 19 can be used as a heating element and can release heat after being energized.

[0030] It should be further explained that the connecting plate 2 13 is fixedly installed on one side of the resistance wire 19 with an anti-contact layer 2. The surface of the anti-contact layer 2 is provided with several hollow holes 21. The inner side of the anti-contact layer 2 covers the surface of several resistance wires 19. The anti-contact layer 2 is made of glass fiber material and has a cylindrical structure, which can prevent the resistance wire 19 from directly contacting the sealed shell 11. The hollow holes 21 can ensure that the heat dissipation of the resistance wire 19 is not hindered when it is heated.

[0031] It should be further explained that two symmetrically distributed mounting brackets 3 are fixedly mounted on the surface of the mounting base 1. The surface of the mounting bracket 3 is provided with mounting holes 31. The inner wall surface of the mounting holes 31 is smooth or threaded. By using the mounting bracket 3 in conjunction with the mounting holes 31, one end of the entire heating element can be fixed when it needs to be installed.

[0032] It should be further noted that the mounting base 1, support rod 17, support plate 18 and mounting bracket 3 are all made of ceramic material, which has good insulation and high temperature resistance.

[0033] It should be further noted that the sealing shell 11, connecting plate one 12 and connecting plate two 13 are all made of stainless steel, which has sufficient compressive strength. At the same time, they can be fixed by screws or welding when connected.

[0034] It should be further explained that a sealing groove 4 is provided on one side of the connecting plate 12, and a sealing groove 41 is provided on the side of the connecting plate 13 near the connecting plate 12. Both the sealing groove 4 and the sealing groove 41 are annular structures and have the same size. The sealing groove 4 and the sealing groove 41 fit together and cover each other. The sealing groove 4 and the sealing groove 41 can close each other to form a sealed cavity structure.

[0035] It should be further noted that the same sealing ring 42 is slidably fitted inside both the sealing groove 1 4 and the sealing groove 2 41. The sealing ring 42 is made of aluminum alloy and fills the sealing cavity to seal and protect the gap between the connecting plate 1 12 and the connecting plate 2 13.

[0036] Operating Method: This solution ensures the safety and durability of the heating element through a multi-layer sealing structure. The sealed outer shell 11, as the first barrier, is made of stainless steel and welded to the mounting base 1. It can withstand internal pressure and isolate the external environment. Connecting plate 12 and connecting plate 23 are fastened with screws 16. The contact surfaces of the two are provided with matching sealing grooves 4 and 41, and an aluminum alloy sealing ring 42 is embedded inside. When the two are pressed together, the sealing ring 42 fills the cavity to form an airtight connection, effectively preventing the intrusion of moisture or corrosive gases. In addition, the anti-contact layer 2 is made of glass fiber, wraps the resistance wire 19 and has hollow holes 21. This not only avoids the resistance wire from directly contacting the metal shell and causing a short circuit, but also ensures efficient heat dissipation through the holes. This dual protection design (mechanical seal + insulation layer) ensures the stable operation of the heating element under harsh conditions such as high temperature and humidity.

[0037] The arrangement of the resistance wire 19 directly affects the heating uniformity and lifespan. The support rod 17 and the support plate 18 form a modular tensioning structure: multiple sets of ceramic support plates 18 are fixed equidistantly between the two support rods 17. The resistance wire 19 passes through the reserved holes of the support plate 18 and forms a parallel arrangement. The high-temperature insulation properties of ceramics prevent current leakage, while the equidistant distribution forces the resistance wire to maintain a straight state, preventing local overheating caused by bending deformation or contact between adjacent wires. At the same time, the spacing of the support plates 18 is calculated to reduce resistance wire vibration loss and ensure that heat is evenly diffused to the inner wall of the sealed shell 11. The power socket 14 serves as a terminal to conduct current into the resistance wire 19. Its cooperation with the support structure realizes the efficient conversion of electrical energy to thermal energy, and the tensioning design avoids resistance wire deformation caused by thermal expansion and contraction, extending the service life of the component.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealed electric heating tube, comprising a mounting base (1), characterized in that: A sealing shell (11) is inserted and fixed inside the mounting base (1). A connecting plate (12) is welded and fixed at one end of the sealing shell (11). A connecting plate (2) (13) is attached to the other side of the connecting plate (12). The connecting plate (12) is fixedly installed to the connecting plate (2) (13) by several screws (16). A power supply base (14) is fixedly embedded inside the connecting plate (2) (13). A power supply wire (15) is provided on the outward side of the power supply base (14). The connecting plate 2 (13) has two symmetrically distributed support rods (17) fixedly installed on one side near the sealing shell (11). Support plates (18) are fixed between the support rods (17) distributed on both sides. The support plates (18) are arranged in several groups along the support rods (17) and are equidistant from each other. The support plate (18) has several resistance wires (19) distributed throughout its interior, and one end of each resistance wire (19) is fixedly connected to the power supply base (14) for power supply.

2. A sealed electric heating tube according to claim 1, characterized in that: The connecting plate 2 (13) is fixedly installed with an anti-contact layer (2) on one side of the resistance wire (19). The surface of the anti-contact layer (2) is provided with several hollow holes (21). The inner side of the anti-contact layer (2) covers the surface of several resistance wires (19). The anti-contact layer (2) is made of glass fiber material.

3. A sealed electric heating tube according to claim 2, characterized in that: The mounting base (1) has two symmetrically distributed mounting brackets (3) fixedly mounted on its surface. The mounting brackets (3) have mounting holes (31) on their surfaces. The inner wall of the mounting holes (31) is smooth or threaded.

4. A sealed electric heating tube according to claim 3, characterized in that: The mounting base (1), support rod (17), support plate (18) and mounting bracket (3) are all made of ceramic material.

5. A sealed electric heating tube according to claim 4, characterized in that: The sealed outer shell (11), connecting plate one (12) and connecting plate two (13) are all made of stainless steel.

6. A sealed electric heating tube according to claim 5, characterized in that: A sealing groove 1 (4) is provided on one side of the connecting plate 1 (12), and a sealing groove 2 (41) is provided on the side of the connecting plate 2 (13) near the connecting plate 1 (12). Both the sealing groove 1 (4) and the sealing groove 2 (41) are annular structures and have the same size specifications. The sealing groove 1 (4) and the sealing groove 2 (41) fit together and cover each other.

7. A sealed electric heating tube according to claim 6, characterized in that: The same sealing ring (42) is slidably fitted inside both the first sealing groove (4) and the second sealing groove (41). The sealing ring (42) is made of aluminum alloy.

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