Multi-section electric heating tube

Abstract

The utility model belongs to electric heating element technical field discloses a multi -section electric heating heating pipe, it includes shell, insulating board, heating pipe body, dismounting subassembly and protection subassembly, the dismounting subassembly includes the limiting ball controlled by shaft ring and spring, this limiting ball and the recess of heating pipe body outer wall are detachably clamped, to realize quick fixing and dismounting, protection subassembly sets up between shell and insulating board, it includes the first, second sealing washer and the elastic honeycomb base of buffer part that constitute double -sealed structure, is used for abutting the heating pipe body end, this heating pipe passes above -mentioned structure combination, has solved the inconvenient installation and dismounting of prior art, the problem that protection and poor vibration resistance, has the beneficial effect that installation maintenance is convenient and efficient, waterproof dustproof performance is excellent, shock attenuation effect is good and stable and reliable, long service life.

Description

Technical Field

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

[0002] Electric heating elements, as a core component that efficiently converts electrical energy into heat energy, are widely used in household appliances, industrial equipment, and various fluid and air heating systems. Typically, a basic electric heating element consists of a metal tube, a resistance heating wire inside the tube, and terminals for connecting to an external power source.

[0003] Traditional installation methods often use bolt fastening or pressure plate fixing structures, which can ensure the connection is firm, but the installation and disassembly process is often cumbersome and requires the use of special tools. This is especially inconvenient when operating inside equipment with limited space, which directly leads to low efficiency in equipment assembly and subsequent maintenance and replacement of heating tubes.

[0004] To protect electrical connections such as terminals, existing technologies typically use a single sealing gasket for waterproofing and dustproofing. However, this single protective structure is prone to deterioration or even failure in sealing performance under long-term use or improper installation. Once moisture or conductive dust enters, it can easily cause short circuits and corrosion at electrical connection points, leading to equipment failure and posing safety hazards.

[0005] Traditional rigid installation methods transmit these vibrations to the heating element body with almost no attenuation, and then to the relatively fragile heating wire inside. Long-term vibration stress will accelerate the metal fatigue of the heating wire, causing it to break prematurely. This has become a key bottleneck affecting the overall service life of the electric heating element. To address this issue, a multi-segment electric heating element is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a multi-segment electric heating tube, which aims to improve the problems of complex installation and disassembly process, insufficient protection performance and poor vibration resistance of the existing multi-segment electric heating tube.

[0007] This utility model provides a multi-segment electric heating tube, including: a shell, an insulating plate, and a heating tube body with a heating wire inside; as well as a disassembly component and a protective component.

[0008] The disassembly assembly is used to achieve a detachable fixation between the heating tube body and the insulating plate.

[0009] The protective assembly includes a sealing portion forming a sealed structure and a buffer portion abutting against the end of the heating tube body. The protective assembly is combined in such a way that it is disposed between the outer shell and the insulating plate.

[0010] Preferably, the disassembly assembly includes a fixing rod, a collar movably sleeved on the outside of the fixing rod, a spring disposed between the collar and the fixing rod, and a limiting ball that is pushed by the collar and engages with a groove on the outer wall of the heating tube body.

[0011] Furthermore, the fixed rod has an internal cavity for the limiting ball to retract when the spring is compressed.

[0012] Preferably, the sealing part of the protective component includes a first sealing ring, a first sealing groove that mates with the first sealing ring, a second sealing ring, and a second sealing groove that mates with the second sealing ring, which together constitute a double sealing structure.

[0013] Preferably, the first sealing ring and the first sealing groove are arranged around the outside of the second sealing ring and the second sealing groove.

[0014] Preferably, the buffer portion of the protective component is a honeycomb base.

[0015] Furthermore, the honeycomb base is an elastic honeycomb base.

[0016] Preferably, the multi-segment electric heating tube further includes a terminal block disposed on the insulating plate and electrically connected to the heating wire; and the connection between the outer shell and the insulating plate is a detachable threaded connection.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by disassembling the components, the installation and disassembly of the heating tube body can be completed without the need for complex tools, and locking and unlocking can be completed by simple push and pull actions, which greatly improves the efficiency of assembly and subsequent maintenance and significantly reduces labor and time costs.

[0018] 2. In this utility model, the protective components achieve dual protection of double sealing and buffering shock absorption; and the double sealing structure forms a reliable waterproof and dustproof barrier, which can effectively prevent external moisture and dust from entering and protect the safety of internal electrical components. The elastic honeycomb base can effectively absorb and offset external vibration and impact, protecting the fragile internal heating wire from damage. Together, they significantly extend the overall service life of the product. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a multi-segment electric heating tube proposed in this utility model; Figure 2 This is a schematic diagram of the disassembly assembly of a multi-segment electric heating tube proposed in this utility model; Figure 3This is a schematic diagram of the structure of a protective assembly for a multi-segment electric heating tube proposed in this utility model; Figure 4 for Figure 2 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0020] Legend: 1. Outer shell; 2. Insulating board; 3. Terminal block; 4. Disassembly assembly; 401. Fixing rod; 402. Collar; 403. Spring; 404. Limiting ball; 405. Groove; 406. Cavity; 5. Heating tube body; 6. Heating wire; 7. Protective assembly; 701. First sealing ring; 702. First sealing groove; 703. Second sealing ring; 704. Second sealing groove; 705. Honeycomb base. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 5 This utility model provides an embodiment of a multi-segment electric heating tube, which aims to solve the problems of complex installation and disassembly processes and poor protection performance leading to short service life in the prior art. The multi-segment electric heating tube includes a shell 1, an insulating plate 2, and a heating tube body 5. The shell 1 is used to cover and protect all internal components, and the insulating plate 2 is used to install and fix other components and achieve electrical insulation. The shell 1 and the insulating plate 2 are detachably connected by threads. A heating wire 6 for converting electrical energy into heat energy is fixedly installed inside the heating tube body 5. The heating tube body 5 is installed and fixed on the insulating plate 2. It also includes a terminal block 3 fixedly installed on the insulating plate 2 for connecting an external power source to supply power to the heating wire 6, a disassembly component 4 installed on the insulating plate 2 and cooperating with the heating tube body 5, and a protective component 7 installed between the shell 1 and the insulating plate 2. Reference Figure 3The disassembly assembly 4 is used to achieve a detachable fixation between the heating tube body 5 and the insulating plate 2. It includes a fixing rod 401 as a stationary base, which is fixedly mounted on the insulating plate 2. The fixing rod 401 has a cavity 406 inside, and a through hole is formed in the rod wall. A limiting ball 404 is movably disposed within the through hole. A collar 402, used to drive the limiting ball 404 radially, is movably sleeved on the outer circumference of the fixing rod 401. A spring 403, used to provide a restoring force for the collar 402, is sleeved on the fixing rod 401. The two ends of the spring 403 abut against the inner side of the collar 402 and the rod body portion of the fixing rod 401, respectively. The wall has a groove 405 for locking with a limiting ball 404. During installation, the collar 402 is slid to the left to compress the spring 403, so that the inner wall of the collar 402 no longer squeezes the limiting ball 404. Under external pressure, the limiting ball 404 moves inward and retracts into the cavity 406. At this time, the heating tube body 5 is inserted until the groove 405 is aligned with the through hole. After the collar 402 is released, the spring 403 rebounds and pushes the collar 402 to the right. The inner wall of the collar 402 squeezes the limiting ball 404 again, causing it to protrude outward from the cavity 406 and be stuck in the groove 405, thus completing the quick fixation of the heating tube body 5. Disassembly is done by reversing the operation. The protective component 7 provides sealing and shock absorption protection for the heating tube body 5. It includes a sealing part and a buffer part. The sealing part is formed by the cooperation of a first sealing ring 701, a first sealing groove 702, a second sealing ring 703, and a second sealing groove 704 to form a double sealing structure. The first sealing ring 701 is embedded in the first sealing groove 702, and the second sealing ring 703 is embedded in the second sealing groove 704. The first sealing ring 701 and the first sealing groove 702 are arranged around the outside of the second sealing ring 703 and the second sealing groove 704. When the outer shell 1 is tightened with the insulating plate 2, the two sealing structures are simultaneously compressed to form a double waterproof and dustproof barrier. The buffer part of the protective component 7 is an elastic honeycomb base 705. The honeycomb base 705 is fixedly connected to the bottom of the outer shell 1 to absorb vibration and impact. Its end face abuts against the end of the heating tube body 5 after assembly, providing continuous cushioning and shock absorption support for the heating tube body 5. The basic working principle of heating wire 6 being energized and heating inside heating tube body 5, the threaded connection method between outer shell 1 and insulating plate 2, and the general electrical connection structure of terminal 3 are all well-known technologies in the field. Those skilled in the art can implement them according to actual needs, and will not be elaborated here.

[0023] Working principle: First, the operator slides the collar 402 of the disassembly component 4 to the left to compress the spring 403, so that the limiting ball 404 can retract into the cavity 406 inside the fixing rod 401 after being squeezed by the inner wall of the collar 402. Next, insert the heating tube body 5 into the mounting position of the insulating plate 2 until the groove 405 on the heating tube body 5 is aligned with the through hole on the fixing rod 401. Then, loosen the collar 402. The spring 403 pushes the collar 402 to the right due to the rebound. The inner wall of the collar 402 then squeezes the limiting ball 404 again, causing it to protrude outward from the cavity 406 and be firmly inserted into the groove 405 of the heating tube body 5, thereby completing the quick fixation of the heating tube body 5. After the heating tube body 5 is fixed, align the outer shell 1 with the threaded interface of the insulating plate 2 and tighten it clockwise. This tightening action makes the first sealing ring 701 in the protective component 7 completely fit with the first sealing groove 702, and at the same time, the second sealing ring 703 and the second sealing groove 704 are also completely fitted. This forms a double waterproof and dustproof barrier between the external environment and the inside of the equipment. The elastic honeycomb base 705 at the bottom of the outer shell 1 also abuts against the end of the heating tube body 5, providing continuous cushioning and shock absorption support for the heating tube body 5. When heating is required, connect the external power supply to the terminal 3. The current generates heat through the heating wire 6, and the heat is then conducted outward through the heating tube body 5. When disassembly and maintenance are required, simply loosen and remove the outer casing 1 by turning counterclockwise, and repeat the above-mentioned action of the sliding collar 402 to make the limiting ball 404 disengage from the groove 405, and then pull out the heating tube body 5. The whole process is convenient and efficient, solving the problems of inconvenient installation and disassembly and insufficient protection in the existing technology.

Claims

1. A multi-segment electric heating tube, comprising a shell (1), an insulating plate (2), and a heating tube body (5) with a heating wire (6) disposed inside, wherein the heating tube body (5) is disposed on the insulating plate (2); characterized in that, It also includes: A disassembly assembly (4) is provided on the insulating plate (2) and cooperates with the heating tube body (5). The disassembly assembly (4) is used to achieve a detachable fixation between the heating tube body (5) and the insulating plate (2). The protective assembly (7) is disposed between the outer casing (1) and the insulating plate (2), the protective assembly (7) including a sealing part forming a sealing structure and a buffer part abutting against the end of the heating tube body (5).

2. The multi-segment electric heating tube according to claim 1, characterized in that, The outer wall of the heating tube body (5) is provided with a groove (405); the disassembly assembly (4) includes a fixing rod (401), a collar (402) movably sleeved on the outside of the fixing rod (401), a spring (403) disposed between the collar (402) and the fixing rod (401), and a limiting ball (404) pushed by the collar (402) and engaged with the groove (405).

3. The multi-segment electric heating tube according to claim 2, characterized in that, The fixed rod (401) has a cavity (406) inside which the limiting ball (404) retracts when the spring (403) is compressed.

4. The multi-segment electric heating tube according to claim 1, characterized in that, The sealing part of the protective component (7) includes a first sealing ring (701), a first sealing groove (702) that cooperates with the first sealing ring (701), a second sealing ring (703), and a second sealing groove (704) that cooperates with the second sealing ring (703), which together constitute a double sealing structure.

5. The multi-segment electric heating tube according to claim 4, characterized in that, The first sealing ring (701) and the first sealing groove (702) are arranged around the outside of the second sealing ring (703) and the second sealing groove (704).

6. The multi-segment electric heating tube according to claim 1, characterized in that, The buffer portion of the protective component (7) is a honeycomb base (705).

7. The multi-segment electric heating tube according to claim 6, characterized in that, The honeycomb base (705) is an elastic honeycomb base.

8. The multi-segment electric heating tube according to claim 1, characterized in that, It also includes a terminal block (3) disposed on the insulating plate (2) and electrically connected to the heating wire (6); the housing (1) is detachably connected to the insulating plate (2) by threads.

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