Insulation protection structure of electric heating device

Abstract

The utility model relates to the technical field of electric heating rods, in particular to an insulation protection structure of an electric heating device, which comprises an electric heating rod, one end of the electric heating rod is provided with a junction box, the outer surface of the electric heating rod is sleeved with two insulation sleeve shells, and the two insulation sleeve shells tightly wrap the electric heating rod in an up-down clamping mode. A fixing plate is fixed at one end, close to the junction box, of each insulating sleeve shell, and the fixing plates are connected with the wiring ends of the electric heating rods through bolts. The electric heating rod is wrapped by the high-temperature-resistant insulating sleeve shell, current leakage is effectively prevented, the risks of electric leakage and short circuit are avoided, the use safety of equipment is improved, the insulating sleeve shell in the design can be easily disassembled by screwing out a bolt, independent replacement or maintenance can be carried out without replacing the whole electric heating rod, and the cost is reduced. The maintenance process is greatly simplified, the maintenance cost is reduced, and resource waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric heating rod technical field especially, relates to an insulating protection structure of electric heating device. BACKGROUND

[0002] Electric heating rod is a kind of heating equipment for liquid medium, mainly for the heating and heat tracing of liquid medium, its working principle is that heat is generated by current through internal heating element, and heat is transferred to surrounding liquid medium, to realize heating purpose, electric heating rod is suitable for various liquid medium except gasoline, and is widely used in petrochemical industry, electric power, food processing, household appliances and other fields.

[0003] In the working process of electric heating rod, since its heating element can generate high temperature, it needs to ensure electrical insulation performance to prevent safety hazards such as electric leakage and short circuit, at present, the traditional electric heating rod usually realizes insulation protection by setting insulating shell outside, however, the existing insulating shell is fixed on electric heating rod by welding or integral molding, but the insulating shell of welding or integral molding needs complex process in installation process, which increases the difficulty of manufacturing and maintenance, in addition, when insulating shell or electric heating rod is damaged, since they are fixed as a whole, they cannot be replaced separately, and electric heating rod can only be replaced as a whole, leading to high maintenance cost and resource waste.

[0004] Therefore, it is urgent to provide an insulating protection structure of electric heating device which is easy to disassemble. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings that the insulating shell in traditional electric heating rod adopts welding or integral molding installation mode, leading to inconvenient disassembly and increasing the difficulty of manufacturing and maintenance, the utility model provides an insulating protection structure of electric heating device which is easy to disassemble.

[0006] To realize the above problems, the utility model adopts the following technical scheme: an insulating protection structure of electric heating device, including electric heating rod, the one end of electric heating rod is installed with terminal box, the outer surface of electric heating rod is equipped with two insulating shells, two insulating shells are tightly wrapped electric heating rod by the way of upper and lower clamping, the one end of each insulating shell is fixed with fixed plate near terminal box, the fixed plate is connected with terminal of electric heating rod by bolt, the contact surface of two insulating shells is embedded with sealing strip.

[0007] Optionally, the terminal of electric heating rod is installed with conductive sheet in lower part, the side surface of conductive sheet is connected with grounding pin, the upper part of terminal of electric heating rod is installed with limiting block, the bottom of limiting block is equipped with clamping groove, the top of conductive sheet is fixed with clamping block which is matched with clamping groove.

[0008] Optionally, reinforcing plates are fixed on the wiring ends of the electric heating rod, and the reinforcing plates are fixedly connected with the wiring ends of the electric heating rod at the upper ends and are fixed with the junction box at the lower ends through screws.

[0009] Optionally, a clamping ball is arranged on the inner wall of the clamping groove of the limiting block, and a clamping hole matched with the clamping ball is arranged on the clamping block.

[0010] Optionally, a mounting block is fixed on the junction box.

[0011] Optionally, a pull rod is fixed on the limiting block.

[0012] Compared with the prior art, the utility model has the following technical effects: 1. The electric heating rod is wrapped by the high-temperature-resistant insulating sleeve, effectively preventing current leakage, avoiding the risk of electric shock and short circuit, improving the safety of equipment use, and the insulating sleeve in the design can be easily disassembled by unscrewing the bolt, so that the whole electric heating rod does not need to be replaced, and the maintenance process is greatly simplified, the maintenance cost is reduced, and resource waste is reduced.

[0013] 2. Through the design of the conductive sheet and the grounding needle, when the electric heating rod leaks, the current generated by the leakage can be quickly introduced into the ground, effectively avoiding the current passing through the human body, protecting the personal safety, and the setting of the grounding needle can also prevent the problem of excessive voltage or short circuit caused by circuit failure, improving the safety of equipment operation.

[0014] 3. Through the cooperation of the clamping block and the clamping groove, the quick connection and separation of the limiting block and the conductive sheet are realized, ensuring that the installation position of the grounding needle is fixed, and also facilitating the disassembly and replacement of the grounding needle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 It is a partial sectional view of the electric heating rod, the insulating sleeve and the sealing sleeve and other parts of the utility model.

[0017] Figure 3 It is an explosion view of the insulating sleeve, the sealing strip and the bolt and other parts of the utility model.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the junction box, the conductive sheet and the screw and other parts of the utility model.

[0019] Figure 5 It is a partial sectional view of the grounding needle, the clamping block and the limiting block and other parts of the utility model.

[0020] Explanation of reference signs: 1: electric heating rod, 2: junction box, 3: insulating sleeve, 4: fixing plate, 5: bolt, 6: sealing strip, 7: conductive sheet, 8: grounding pin, 9: clamping block, 10: limiting block, 11: reinforcing plate, 12: screw, 13: clamping ball, 14: pull rod, 15: mounting block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Embodiment 1: please refer to Figures 1-3 An insulating protection structure of an electric heating device, comprising an electric heating rod 1, one end of the electric heating rod 1 is provided with a junction box 2, the junction box 2 is fixedly connected with a mounting block 15, the mounting block 15 is designed to provide a mounting point for the device, facilitating the fixation and installation of the device, the junction end of the electric heating rod 1 is fixedly connected with symmetrically distributed reinforcing plates 11, the upper end of the reinforcing plate 11 is fixedly connected with the junction end of the electric heating rod 1, and the lower end is fixedly connected with the junction box 2 through a screw 12, so as to enhance the connection strength of the junction end and the electric heating rod 1, prevent the connection from loosening due to vibration or external force, and the outer surface of the electric heating rod 1 is sleeved with two insulating sleeves 3, the two insulating sleeves 3 tightly wrap the electric heating rod 1 in an upper and lower clamping manner, so as to realize omnidirectional protection, and one end of each insulating sleeve 3 close to the junction box 2 is fixedly connected with a fixing plate 4, the fixing plate 4 is connected with the junction end of the electric heating rod 1 through a bolt 5, so as to ensure the stable installation of the insulating sleeve 3, and the contact surfaces of the two insulating sleeves 3 are embedded with sealing strips 6, so as to enhance the sealing effect and prevent external dust or moisture from entering.

[0023] Before using the electric heating rod 1, first, the two insulating sleeves 3 are sleeved outside the electric heating rod 1 and are ensured to be clamped in place, then the fixing plate 4 on the insulating sleeve 3 is fixed to the junction end of the electric heating rod 1 through the bolt 5, so as to realize stable connection, this design not only facilitates disassembly and maintenance, but also, when the electric heating rod 1 is working, since the insulating sleeve 3 is made of high-temperature-resistant insulating material, can effectively isolate the current and prevent current leakage, avoiding the risk of electric shock and short circuit, in addition, the insulating sleeve 3 can also protect the electric heating rod 1 from being eroded and damaged by external environmental factors, thereby prolonging the service life thereof, when the insulating sleeve 3 is damaged or needs to be repaired, the insulating sleeve 3 can be easily removed by unscrewing the bolt 5, so as to perform replacement or repair operation, greatly improving the maintenance efficiency.

[0024] Embodiment 2: Based on Embodiment 1, please refer to Figure 4 and Figure 5 The lower part of the wiring end of the electric heating rod 1 is clamped and installed with a conductive sheet 7, the side of the conductive sheet 7 is connected with a grounding needle 8 for guiding the current generated by the electric heating rod 1 to the ground, the upper part of the wiring end of the electric heating rod 1 is clamped and installed with a limiting block 10, the bottom of the limiting block 10 is provided with two clamping grooves, the top of the conductive sheet 7 is fixed with two clamping blocks 9 matched with the clamping grooves, the stable connection of the limiting block 10 and the conductive sheet 7 is realized by inserting the clamping blocks 9 into the clamping grooves, so that the installation of the grounding needle 8 is realized, the inner wall of the clamping groove of the limiting block 10 is provided with a clamping ball 13, the clamping block 9 is provided with a clamping hole matched with the clamping ball 13, the connection of the limiting block 10 and the clamping block 9 is enhanced by the cooperation of the clamping ball 13 and the clamping hole, so that the displacement of the limiting block 10 under the action of vibration or external force is prevented, the installation position of the grounding needle 8 is fixed, the top of the limiting block 10 is fixedly connected with a pull rod 14, the pull rod 14 is arranged to facilitate the disassembly and installation of the limiting block 10, the operator can easily pull the limiting block 10 through the pull rod 14 to realize quick disassembly and assembly.

[0025] Before the electric heating rod 1 is actually used, the conductive sheet 7 is first installed at the lower part of the wiring end of the electric heating rod 1, then the limiting block 10 is installed at the upper part of the wiring end, the stable connection of the limiting block 10 and the conductive sheet 7 is realized by the cooperation of the clamping block 9 and the clamping groove, so that the position of the grounding needle 8 is fixed, this installation mode not only facilitates disassembly and maintenance, but also when the electric heating rod 1 leaks, the grounding needle 8 can quickly guide the current generated by the leakage to the ground, so as to avoid the current passing through the human body and protect the personal safety, in addition, the grounding needle 8 can also prevent the problem of excessively high voltage or short circuit caused by circuit failure, protect the equipment from damage and improve the reliability of equipment operation.

[0026] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principles of the present application, and these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. An insulating protection structure for an electric heating device, comprising an electric heating rod (1), wherein a junction box (2) is installed at one end of the electric heating rod (1), characterized in that, The outer surface of the electric heating rod (1) is fitted with two insulating shells (3). The two insulating shells (3) tightly wrap the electric heating rod (1) by interlocking. Each insulating shell (3) has a fixing plate (4) fixed at one end near the junction box (2). The fixing plate (4) is connected to the wiring terminal of the electric heating rod (1) by bolts (5). Sealing strips (6) are embedded in the contact surfaces of the two insulating shells (3).

2. The insulation protection structure of the electric heating device according to claim 1, characterized in that, A conductive sheet (7) is snapped onto the lower part of the wiring terminal of the electric heating rod (1). A grounding pin (8) is connected to the side of the conductive sheet (7). A limiting block (10) is snapped onto the upper part of the wiring terminal of the electric heating rod (1). A slot is provided at the bottom of the limiting block (10). A locking block (9) that matches the slot is fixed on the top of the conductive sheet (7).

3. The insulation protection structure of the electric heating device according to claim 2, characterized in that, The electric heating rod (1) has symmetrically distributed reinforcing plates (11) fixedly connected to its wiring terminals. The upper end of the reinforcing plate (11) is fixedly connected to the wiring terminals of the electric heating rod (1), and the lower end is fixedly connected to the junction box (2) by screws (12).

4. The insulation protection structure of the electric heating device according to claim 3, characterized in that, The inner wall of the slot of the limiting block (10) is provided with a ball (13), and the card block (9) is provided with a card hole that is compatible with the ball (13).

5. The insulation protection structure of the electric heating device according to claim 4, characterized in that, A mounting block (15) is fixedly connected to the junction box (2).

6. The insulation protection structure of the electric heating device according to claim 5, characterized in that, A pull rod (14) is fixedly connected to the limiting block (10).

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