Magnetic fixing type explosion-proof oil drum heating belt

Abstract

This utility model relates to the field of heating belt technology and discloses a magnetically fixed explosion-proof oil drum heating belt, including an explosion-proof oil drum body and a heating belt body. A fixing mechanism is provided on the front side of the heating belt body for adjusting the tightness of explosion-proof oil drum bodies of different sizes. A storage mechanism is provided on the right front end of the heating belt body for storing the electrical components. An adjustment mechanism is provided on the left side of the storage mechanism. In this utility model, by passing the bent belt through the buckle and adjusting the stretch length, magnetic plates one and two are attracted and fixed, while the buckle slides along the fixing belt to change its angle. Combined with the heat dissipation belt and heating wire for uniform heating, this achieves rapid adaptation to explosion-proof oil drum bodies of different specifications in industrial explosion-proof scenarios, precise adjustment of the heating belt body tightness to ensure a tight fit, and stable and uniform heating, thus improving heating efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of heating belt technology, and in particular to a magnetically fixed explosion-proof oil drum heating belt. Background Technology

[0002] Explosion-proof oil drum heating belts are specialized heating devices used in flammable and explosive hazardous environments such as petroleum and chemical industries. They are mainly used to maintain the temperature of the medium inside the oil drum, preventing it from becoming viscous and losing fluidity due to excessively low temperatures, which would affect normal transportation and use. The device generates heat through heating components wrapped around the outside of the oil drum, which is then conducted to the drum body to indirectly heat the internal medium. With the increasing demands for safety and efficiency in industrial production, explosion-proof oil drum heating belts need to be able to be installed quickly, control temperatures precisely, and adapt to oil drums of different sizes to meet the diverse needs of industrial scenarios.

[0003] While most explosion-proof oil drum heating belts on the market currently avoid the risk of explosion caused by electrical short circuits through insulation and protection designs, existing heating belts are fixed to the surface of the oil drum by bolts, cable ties, or clips. Taking bolt fastening as an example, during installation, holes need to be drilled in advance at the corresponding positions of the heating belt and the oil drum, and then the two are fixed with bolts and nuts. This process is not only time-consuming and labor-intensive, but also requires a high level of installation skills from the operators. Cable ties require multiple wrapping and tightening of the cable ties, and the excess part needs to be cut off with tools. The installation efficiency is low, and the cable ties are prone to aging and breakage. Although the clip splicing method is relatively simple to operate, there are many clips, which need to be engaged one by one. Moreover, when the force on the surface of the oil drum is uneven, local loosening is likely to occur.

[0004] These fixed methods make the equipment installation process cumbersome. In emergency material allocation scenarios, it is necessary to quickly install heating belts on oil drums of various sizes. The existing methods reduce the overall operation efficiency due to the complicated installation process, and cannot meet the urgent needs of industrial production for efficient and convenient installation. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a magnetically fixed explosion-proof oil drum heating belt, which aims to improve the problem of reduced overall operation efficiency in emergency material allocation scenarios due to the complex installation process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a magnetically fixed explosion-proof oil drum heating belt, comprising an explosion-proof oil drum body and a heating belt body. A fixing mechanism is provided on the front side of the heating belt body, which is used to adjust the tightness of explosion-proof oil drum bodies of different sizes. A storage mechanism is provided on the right front end of the heating belt body, which is used to store the electrical parts. An adjustment mechanism is provided on the left side of the storage mechanism.

[0007] The fixing mechanism includes a buckle, a fixing strap is provided at the right end of the heating belt body, the rear side of the fixing strap is fixedly connected to the front right end of the heating belt body, the buckle is sleeved between the fixing strap and the heating belt body, a bending strap is provided at the left end of the heating belt body, the bending strap passes through the inside left side of the buckle, a fixing component is provided at the rear side of the bending strap, and a heating mechanism is provided inside the heating belt body.

[0008] As a further description of the above technical solution:

[0009] The storage mechanism includes a storage tube, which is fixedly connected to the front right end of the heating belt body. A spring wire is fixedly connected inside the storage tube, and an elastic component is provided inside the spring wire. A tube cover is fixedly connected to the top end of the spring wire, and the tube cover is snapped into the top of the storage tube. A plug is fixedly connected to the front side of the tube cover.

[0010] As a further description of the above technical solution:

[0011] The adjustment mechanism includes an insulating box, which is fixedly connected to the left side of the storage tube. The left side of the insulating box is fixedly connected to the right side of the fixing strap. A transformer is fixedly connected inside the insulating box. An adjustment knob is rotatably connected to the front of the insulating box and is electrically connected to the transformer.

[0012] As a further description of the above technical solution:

[0013] The fixing component includes a magnetic suction piece one, which is fixedly connected to the rear side of the bending belt. An adjustment belt is fixedly connected to the front left end of the heating belt body, and multiple magnetic suction pieces two are fixedly connected inside the adjustment belt.

[0014] As a further description of the above technical solution:

[0015] The heating mechanism includes a heat dissipation strip, which is fixedly connected to the inner side of the heating strip body, and multiple heating wires are fixedly connected at equal intervals to the inner side of the heat dissipation strip.

[0016] As a further description of the above technical solution:

[0017] The elastic component includes a conductive wire and a contraction spring, which are fixedly connected to the left and right sides of the spring conductor, respectively.

[0018] As a further description of the above technical solution:

[0019] The storage mechanism also includes a guide post, which is fixedly connected to the bottom inner side of the storage tube, and the top of the guide post has a rounded design.

[0020] As a further description of the above technical solution:

[0021] Multiple length indicators are fixedly connected at equal intervals on the top left side of the heating belt body, and the spacing between the multiple length indicators is equal to the spacing between the multiple magnetic pieces.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by passing the bending strip through the buckle and adjusting the stretching length, the magnetic suction piece one and the magnetic suction piece two are attracted and fixed, while the buckle slides along the fixing strip to change the angle; together with the heat dissipation strip and the heating wire to provide uniform heat, it is possible to quickly adapt to the body of explosion-proof oil drums of different specifications in industrial explosion-proof scenarios, accurately adjust the tightness of the heating strip body to ensure a tight fit, and at the same time, provide stable and uniform heating, thereby improving heating efficiency and safety.

[0024] 2. In this utility model, pulling the plug causes the spring wire to extend from the storage tube, and the retracting spring stretches; after use, the retracting spring resets, causing the spring wire to retract, the tube cover locks into the storage tube, and the guide post guides and prevents tangling. This achieves the effect of automatically storing the electrical connection parts in industrial explosion-proof scenarios, avoiding exposed wire wear, preventing leakage and explosion hazards, facilitating the management of the electrical connection parts, and ensuring safe use. Attached Figure Description

[0025] Figure 1 This is a perspective view of the magnetically fixed explosion-proof oil drum heating belt proposed in this utility model;

[0026] Figure 2 This is a front view of the magnetically fixed explosion-proof oil drum heating belt proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the fixing mechanism in the magnetically fixed explosion-proof oil drum heating belt proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the storage mechanism in the magnetically fixed explosion-proof oil drum heating belt proposed in this utility model;

[0029] Figure 5 This is a cross-sectional view of the insulating box in the magnetically fixed explosion-proof oil drum heating belt proposed in this utility model;

[0030] Figure 6 This is a cross-sectional view of the spring wire in the magnetically fixed explosion-proof oil drum heating belt proposed in this utility model;

[0031] Figure 7 This is a cross-sectional view of the adjusting belt in the magnetically fixed explosion-proof oil drum heating belt proposed in this utility model.

[0032] Legend:

[0033] 1. Explosion-proof oil drum body; 2. Heating belt body; 3. Fixing mechanism; 31. Buckle; 32. Fixing strap; 33. Bending strap; 34. Fixing component; 341. Magnetic suction plate one; 342. Adjusting strap; 343. Magnetic suction plate two; 35. Heating mechanism; 351. Heat dissipation belt; 352. Heating wire; 4. Storage mechanism; 41. Storage tube; 42. Spring wire; 43. Elastic component; 431. Conductive wire; 432. Retraction spring; 44. Drum cover; 45. Plug; 46. Guide post; 5. Adjustment mechanism; 51. Insulation box; 52. Transformer; 53. Adjustment knob; 6. Length indicator. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0035] Reference Figure 1 , Figure 3 and Figure 7 An embodiment of this utility model is provided: a magnetically fixed explosion-proof oil drum heating belt, including an explosion-proof oil drum body 1 and a heating belt body 2. A fixing mechanism 3 is provided on the front side of the heating belt body 2. The fixing mechanism 3 is used to adjust the tightness of the explosion-proof oil drum body 1 for different sizes. A storage mechanism 4 is provided on the right front side of the heating belt body 2. The storage mechanism 4 is used to store the electrical part. An adjustment mechanism 5 is provided on the left side of the storage mechanism 4.

[0036] The fixing mechanism 3 includes a buckle 31. A fixing strap 32 is provided at the right end of the heating belt body 2. The rear side of the fixing strap 32 is fixedly connected to the front right end of the heating belt body 2. The buckle 31 is sleeved between the fixing strap 32 and the heating belt body 2. A bent strap 33 is provided at the left end of the heating belt body 2. The bent strap 33 passes through the left side of the inside of the buckle 31. A fixing component 34 is provided at the rear side of the bent strap 33. The fixing component 34 includes a magnetic suction piece 341, which is fixedly connected to the rear side of the bent strap 33. An adjustment belt 342 is fixedly connected to the front left end. Multiple magnetic absorbing pieces 343 are fixedly connected inside the adjustment belt 342. A heating mechanism 35 is provided inside the heating belt body 2. The heating mechanism 35 includes a heat dissipation belt 351. The heat dissipation belt 351 is fixedly connected to the inner side of the heating belt body 2. Multiple heating wires 352 are fixedly connected at equal intervals to the inner side of the heat dissipation belt 351. Multiple length indicator marks 6 are fixedly connected at equal intervals to the top left side of the heating belt body 2. The spacing between the multiple length indicator marks 6 is equal to the spacing between the multiple magnetic absorbing pieces 343.

[0037] Specifically, the buckle 31 of the fixing mechanism 3 is sleeved between the fixing strap 32 at the right end of the heating belt body 2 and the heating belt body 2, and the bending strap 33 at the left end of the heating belt body 2 passes through the left side of the buckle 31; the magnetic suction piece 341 of the fixing component 34 is fixed to the rear side of the bending strap 33, and the adjusting strap 342 is fixed to the front left end of the heating belt body 2, with multiple magnetic suction pieces 343 embedded inside; when the bending strap 33 passes through the buckle 31, the magnetic suction piece 341 and the magnetic suction piece 343 in the adjusting strap 342 are attracted and fixed, so as to achieve the fit between the heating belt body 2 and the explosion-proof oil drum body 1;

[0038] The heat dissipation strip 351 of the heating mechanism 35 is fixed to the inner side of the heating strip body 2, and the heating wires 352 are evenly distributed on the inner side; the length indicator 6 is fixed to the top left side of the heating strip body 2, and the spacing is consistent with the magnetic suction piece 343; the buckle 31 can slide along the fixing strip 32 to change the angle at which the bending strip 33 passes through the buckle 31; the material of the bending strip 33 is flexible and can adapt to explosion-proof oil drum bodies 1 of different diameters; the attraction force between the magnetic suction piece 341 and the magnetic suction piece 343 ensures the connection stability of the fixing mechanism 3;

[0039] When the heating belt body 2 surrounds the explosion-proof oil drum body 1, the operator pulls the bending belt 33 through the buckle 31 and adjusts the stretching length of the bending belt 33 according to the length indicator 6, so that the magnetic suction piece 1 341 is attracted to the corresponding magnetic suction piece 2 343, thereby adjusting the tightness; the heating wire 352 generates heat after being energized, which is evenly conducted to the surface of the explosion-proof oil drum body 1 through the heat dissipation belt 351; the storage mechanism 4 stores the connected parts to avoid the influence of the external environment; the adjustment mechanism 5 assists the fixing mechanism 3 in adjustment.

[0040] By sliding the buckle 31 and the bending belt 33 together, and by adsorbing and fixing the magnetic suction piece 1 341 and the magnetic suction piece 2 343, the tightness of the heating belt body 2 on the explosion-proof oil drum body 1 of different sizes can be adjusted, and the heating mechanism 35 can heat evenly, so as to achieve the effect of conveniently adapting to oil drums of different specifications and heating stably in industrial explosion-proof scenarios.

[0041] Reference Figures 3-6The storage mechanism 4 includes a storage tube 41, which is fixedly connected to the front right end of the heating belt body 2. A spring wire 42 is fixedly connected inside the storage tube 41. An elastic component 43 is provided inside the spring wire 42. The elastic component 43 includes a conductive wire 431 and a contraction spring 432. The conductive wire 431 and the contraction spring 432 are fixedly connected to the left and right sides of the spring wire 42, respectively. A tube cover 44 is fixedly connected to the top of the spring wire 42. The tube cover 44 is snapped into the top of the storage tube 41. A plug 45 is fixedly connected to the front side of the tube cover 44. The storage mechanism 4 also includes a guide post 46, which is fixedly connected to the bottom inside the storage tube 41. The top of the guide post 46 has a rounded design.

[0042] Specifically, the storage mechanism 4 of the magnetically fixed explosion-proof oil drum heating belt achieves storage and protection of the electrical connection part through an elastic contraction and locking structure;

[0043] The storage tube 41 is fixed to the front right end of the heating element body 2, and the spring wire 42 is fixed inside; the conductive wire 431 and the contraction spring 432 of the elastic component 43 are fixed to the left and right sides of the spring wire 42 respectively, forming an elastic conductive structure; the tube cover 44 is snapped onto the top of the storage tube 41, and the plug 45 is fixed to the front side, and the top end of the spring wire 42 is connected to the tube cover 44; the guide post 46 is fixed to the bottom inside the storage tube 41, and the top end is rounded.

[0044] The spring wire 42 can undergo elastic deformation as the plug 45 is stretched and retracted. The conductive wire 431 ensures circuit continuity, and the retraction spring 432 provides a restoring force. The locking structure between the cap 44 and the storage tube 41 facilitates disassembly and installation. The guide post 46 guides the retraction process of the spring wire 42 to prevent the wire from tangling. When the plug 45 is connected to an external power source, the spring wire 42 is pulled out of the storage tube 41, and the retraction spring 432 is in a stretched state.

[0045] When the plug 45 is not in use, the restoring force of the retraction spring 432 causes the spring wire 42 to retract into the storage tube 41, and the plug 45 is locked onto the top of the storage tube 41 along with the tube cover 44; the smooth top of the guide post 46 reduces the frictional resistance when the spring wire 42 retracts; the extension length of the spring wire 42 adapts to different electrical connection distance requirements; the material of the storage tube 41 has explosion-proof characteristics and is consistent with the explosion-proof rating of the heating belt body 2;

[0046] By utilizing the elastic restoring effect of the retraction spring 432, combined with the conductivity and extensibility of the spring wire 42, and the guiding structure of the guide post 46, the automatic storage and protection of the electrical connection part is achieved. This enables convenient management of the heating belt electrical connection parts and ensures safe use in industrial explosion-proof scenarios.

[0047] Reference Figure 2 , Figure 3 and Figure 5The adjustment mechanism 5 includes an insulating box 51, which is fixedly connected to the left side of the storage tube 41. The left side of the insulating box 51 is fixedly connected to the right side of the fixing belt 32. A transformer 52 is fixedly connected inside the insulating box 51. An adjustment knob 53 is rotatably connected to the front side of the insulating box 51. The adjustment knob 53 is electrically connected to the transformer 52.

[0048] Specifically, the insulating box 51 is fixed to the left side of the storage tube 41 and the right side of the fixing strap 32, and the transformer 52 is installed inside. The front side is rotatably connected to the adjustment knob 53, and the adjustment knob 53 is electrically connected to the transformer 52.

[0049] The transformer 52 is used to convert the input voltage. The adjusting knob 53 changes the transformation ratio of the transformer 52 by rotating it, thereby adjusting the working voltage of the heating wire 352. The insulating box 51 is made of insulating material to prevent the risk of leakage. The rotation angle of the adjusting knob 53 is linearly related to the output voltage of the transformer 52.

[0050] When the operator rotates the adjustment knob 53, the output voltage of the transformer 52 changes, and the power of the heating wire 352 changes accordingly, thereby adjusting the heating temperature; the fixed position of the insulation box 51 makes it easy for the operator to adjust after the heating belt is installed; the electrical connection lines of the transformer 52 are hidden inside the insulation box 51 to ensure circuit safety.

[0051] By adjusting the knob 53 to control the transformer 52's transformation ratio, the heating power of the heating belt can be adjusted, enabling flexible adjustment of the heating temperature according to requirements in industrial explosion-proof scenarios.

[0052] Working principle: The heating belt body 2 is equipped with a heating mechanism 35 inside, and integrates fixing, storage and adjustment functional components on the outside. Through the cooperation of various mechanisms, the explosion-proof oil drum body 1 is heated in a wrap-around manner.

[0053] In the fixing mechanism 3, the buckle 31 is fitted between the fixing band 32 on the right end of the heating band body 2 and the heating band body 2. The bent band 33 on the left end of the heating band body 2 passes through the left side of the buckle 31. The magnetic suction piece 341 on the back side of the bent band 33 and the magnetic suction piece 343 in the adjusting band 342 form a magnetic attraction fixing structure. When the heating band body 2 surrounds the explosion-proof oil drum body 1, the operator pulls the bent band 33 through the buckle 31 and adjusts the stretching length of the bent band 33 according to the length indicator mark 6 on the top left side of the heating band body 2, so that the magnetic suction piece 341 and the corresponding magnetic suction piece 343 are attracted to each other, so that the heating band and the oil drum are tightly fitted. The buckle 31 can slide along the fixing band 32 to change the angle at which the bent band 33 passes through, and adapt to oil drums of different diameters.

[0054] The heat dissipation strip 351 of the heating mechanism 35 is fixed to the inner side of the heating strip body 2, and the heating wires 352 are evenly distributed on its inner side; when the heating wires 352 are energized, heat is generated and evenly conducted to the surface of the explosion-proof oil tank body 1 through the heat dissipation strip 351, thereby heating the medium inside the tank.

[0055] The storage tube 41 of the storage mechanism 4 is fixed to the front right end of the heating belt body 2, and has a spring wire 42 inside. The conductive wire 431 inside the spring wire 42 and the retraction spring 432 are fixed to the left and right sides respectively, forming an elastic conductive structure. The tube cover 44 is snapped into the top of the storage tube 41, and the plug 45 is fixed to the front. The guide post 46 at the bottom of the inner side of the storage tube 41 has a smooth top and guides the retraction of the spring wire 42. When the plug 45 is connected to an external power source, the spring wire 42 is pulled out and the retraction spring 432 is stretched. After use, the retraction spring 432 resets and drives the spring wire 42 to retract. The plug 45 is snapped into the storage tube 41 along with the tube cover 44, completing the storage of the power connection part.

[0056] The insulating box 51 of the adjusting mechanism 5 is fixed to the left side of the storage tube 41 and the right side of the fixing strap 32. The transformer 52 is installed inside, and the front side is rotatably connected to the adjusting knob 53. The operator rotates the adjusting knob 53 to change the transformation ratio of the transformer 52, thereby adjusting the working voltage of the heating wire 352. The insulating material of the insulating box 51 prevents leakage, and the hidden electrical connection lines inside ensure circuit safety. The linear adjustment relationship between the adjusting knob 53 and the transformer 52 achieves precise control of the heating power.

[0057] In actual use, first wrap the heating belt body 2 around the explosion-proof oil drum body 1, and use the magnetic attraction and length adjustment of the fixing mechanism 3 to make the heating belt fit tightly against the oil drum; then pull out the plug 45 from the storage tube 41 to connect to the power supply, and the spring wire 42 extends; then, according to the heating requirements, turn the adjustment knob 53 to adjust the power of the heating wire 352 through the adjustment mechanism 5; during the heating process, the heat generated by the heating wire 352 is evenly transferred to the oil drum through the heat dissipation belt 351; after use, disconnect the power supply, and the plug 45 retracts into the storage tube 41 along with the spring wire 42 under the action of the contraction spring 432.

[0058] The oil drum is adapted to the magnetic attraction and length adjustment of the fixing mechanism 3, the flexible storage of the storage mechanism 4 ensures electrical safety, the electrical regulation of the adjustment mechanism 5 precisely controls the heating power, and the heating mechanism 35 evenly conducts heat, so as to achieve a stable heating effect of convenient installation, safe power supply and flexible temperature control for explosion-proof oil drums of different specifications in industrial explosion-proof scenarios.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A magnetically fixed explosion-proof oil drum heating belt, comprising an explosion-proof oil drum body (1) and a heating belt body (2), characterized in that: A fixing mechanism (3) is provided on the front side of the heating belt body (2). The fixing mechanism (3) is used to adjust the tightness of explosion-proof oil drum bodies (1) of different sizes. A storage mechanism (4) is provided on the right front side of the heating belt body (2). The storage mechanism (4) is used to store the electrical part. An adjustment mechanism (5) is provided on the left side of the storage mechanism (4). The fixing mechanism (3) includes a buckle (31), a fixing strap (32) is provided at the right end of the heating belt body (2), the rear side of the fixing strap (32) is fixedly connected to the front right end of the heating belt body (2), the buckle (31) is sleeved between the fixing strap (32) and the heating belt body (2), a bending strap (33) is provided at the left end of the heating belt body (2), the bending strap (33) passes through the left side of the buckle (31), a fixing component (34) is provided at the rear side of the bending strap (33), and a heating mechanism (35) is provided inside the heating belt body (2).

2. The magnetic fixing type explosion-proof oil drum heating belt according to claim 1, characterized in that: The storage mechanism (4) includes a storage tube (41), which is fixedly connected to the front right end of the heating belt body (2). A spring wire (42) is fixedly connected inside the storage tube (41), and an elastic component (43) is provided inside the spring wire (42). A tube cover (44) is fixedly connected to the top of the spring wire (42), and the tube cover (44) is engaged with the top of the storage tube (41). A plug (45) is fixedly connected to the front side of the tube cover (44).

3. The magnetic fixing type explosion-proof oil drum heating belt according to claim 1, characterized in that: The adjustment mechanism (5) includes an insulating box (51), which is fixedly connected to the left side of the storage tube (41). The left side of the insulating box (51) is fixedly connected to the right side of the fixing strap (32). A transformer (52) is fixedly connected inside the insulating box (51). An adjustment knob (53) is rotatably connected to the front side of the insulating box (51). The adjustment knob (53) is electrically connected to the transformer (52).

4. The magnetically fixed explosion-proof oil drum heating belt according to claim 1, characterized in that: The fixing component (34) includes a magnetic suction piece (341), which is fixedly connected to the rear side of the bending belt (33). An adjustment belt (342) is fixedly connected to the front left end of the heating belt body (2), and multiple magnetic suction pieces (343) are fixedly connected inside the adjustment belt (342).

5. The magnetic fixing type anti-explosion oil drum heating belt according to claim 1, characterized in that: The heating mechanism (35) includes a heat dissipation strip (351), which is fixedly connected to the inner side of the heating strip body (2). Multiple heating wires (352) are fixedly connected at equal intervals to the inner side of the heat dissipation strip (351).

6. The magnetic fixing type anti-explosion oil drum heating belt according to claim 2, characterized in that: The elastic component (43) includes a conductive wire (431) and a contraction spring (432), which are fixedly connected to the left and right sides of the spring conductor (42), respectively.

7. The magnetic fixing type anti-explosion oil drum heating belt according to claim 1, characterized in that: The storage mechanism (4) also includes a guide post (46), which is fixedly connected to the bottom of the inner side of the storage tube (41), and the top of the guide post (46) is rounded.

8. The magnetically fixed explosion-proof oil drum heating belt according to claim 1, characterized in that: A plurality of length indicating marks (6) are equidistantly fixedly connected to the top left side of the heating belt body (2), and the interval of the plurality of length indicating marks (6) is equal to the interval of the plurality of magnetic attracting pieces (343).

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