Local heating device for steel drum

Abstract

The utility model discloses a steel drum local heating device which comprises a heating protective cover of an arc-shaped columnar structure, one side of the heating protective cover is open, the heating protective cover comprises an inwards-sunken storage cavity, a heating pipe is installed in the storage cavity, the heating pipe is installed on a supporting plate, and the heating protective cover is provided with an opening. A double-thread screw used for positioning is connected to the bottom of the heating protective cover in a penetrating mode. Through the arc-shaped fitting design and the modular structure, the problems that in the prior art, the number of local heating structures of the steel drum is small, the heating device is not in tight contact with the steel drum, the heat utilization rate is low, and operation is complex are solved, and the advantages of accurate positioning, efficient heat conduction and modular design are achieved; the device is suitable for steel drum welding preheating, deformation correction, stress relief and other scenes, operation is safe and convenient, the maintenance cost is low, the efficient, safe and adjustable local heating effect is achieved, and the remarkable industrial application value is achieved.

Description

Technical Field

[0001] This utility model relates to the field of steel drum processing equipment, specifically a local heating device for steel drums. Background Technology

[0002] Steel drums are a traditional type of container, evolving from temporary storage to industrial, retail, and transport packaging. They form a continuous flow from production to distribution and consumption, holding a vital position among traditional containers. During steel drum manufacturing or repair, localized preheating before welding can reduce material hardness, decrease welding stress, and prevent cracks in the weld area due to rapid cooling, especially for thick-walled steel drums. Furthermore, some sealing processes, such as the installation of heat-shrinkable seals, require localized heating to achieve a tight seal. However, there are few existing structural components on the market specifically designed for localized heating of steel drums. To better adapt to production and processing, this invention provides a localized heating device for steel drums. Utility Model Content

[0003] The purpose of this invention is to provide a local heating device for steel drums to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a steel drum local heating device: including an arc-shaped columnar heating protective cover, the heating protective cover being open on one side, the heating protective cover including an inwardly recessed storage cavity, a heating tube installed in the storage cavity, the heating tube being mounted on a support plate, and a double-ended screw for positioning being threaded through the bottom of the heating protective cover.

[0005] Preferably, the support plate is mounted on an upright support column, and there are at least two support columns, which are respectively arranged on both sides of the support plate. The support columns are installed at the bottom of the heating protective cover, so that the support columns can provide effective support for the support plate.

[0006] Preferably, the support column is provided with a locking step for locking the support plate, which facilitates the locking effect.

[0007] Preferably, the edge of the support plate is welded to the inner side of the heating protective cover, and the shape of the support plate is consistent with the upper top plate and lower pressure plate of the heating protective cover.

[0008] Preferably, the lower pressure plate of the heating protective cover is provided with a first through hole that matches the double-ended screw; the lower pressure plate of the heating protective cover is also provided with a second through hole that matches the support column, so as to facilitate the connection of parts and achieve positioning.

[0009] Preferably, the heating tube is arranged in a "one" shape, a "冂" shape or an "S" shape, so as to provide heating tubes of various shapes and facilitate improving the local heating effect.

[0010] Preferably, the lower pressing plate is provided with an arc-shaped raised edge for engaging with the double-headed screw. One end of the double-headed screw is screwed into the arc-shaped raised edge with the upward setting and is locked and positioned by a bolt, which is convenient for the double-headed screw to be positioned on one side of the heating protective cover first.

[0011] Preferably, at least two double-headed screws are provided, which is convenient for the heating protective cover to be more stable during assembly.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model has the functions of precise positioning and stable fixation. Through the cooperation of the double-headed screw and the threaded hole of the external structure, the rapid positioning and locking of the device are realized, avoiding displacement caused by vibration or thermal stress during the process of locally heating the steel barrel, ensuring the stability of the heating area. The cooperative design of the arc-shaped raised edge and the double-headed screw further enhances the fitting degree of the device and the steel barrel, preventing heat dissipation; it has the functions of efficient heat conduction and uniform heating. The arc-shaped columnar heating protective cover matches the arc of the outer wall of the steel barrel, and in cooperation with the "冂" - shaped or "S" - shaped heating tube, it expands the contact range of the heating surface, improves the heat transfer efficiency, reduces local overheating or cold areas. The support plate has the same shape as the upper top plate and the lower pressing plate of the heating protective cover, ensuring that the heating tube is parallel to the surface of the steel barrel and the heat is evenly distributed. The support plate is welded to the inner side of the heating protective cover, enhancing the overall rigidity and avoiding deformation at high temperatures; it has the functions of safety protection and convenient operation. The open - side design of the heating protective cover is convenient for observing and adjusting the position of the heating tube, reducing heat leakage and also reducing the risk of scalding the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0015] Figure 2 is Figure 1 the top view of

[0016] Figure 3 is Figure 1 the right view of

[0017] Figure 4 It is a schematic diagram of the overall structure of the heating protective cover.

[0018] In the figure: heating protective cover (1), first through - hole (11), storage cavity (12), second through - hole (13), arc - shaped raised edge (14), heating tube (2), support plate (3), double - headed screw (4), support column (5). Specific Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1-4 , an embodiment provided by the present utility model: a local heating device for a steel drum, including a heating protective cover 1 with an arc-shaped columnar structure. The heating protective cover 1 is provided with an open side. The heating protective cover 1 includes a storage cavity 12 recessed inward. A heating pipe 2 is installed in the storage cavity 12. The heating pipe 2 is installed on a support plate 3. A double-headed screw rod 4 for positioning is inserted through the bottom of the heating protective cover 1.

[0021] The support plate 3 is installed on a support column 5 arranged upright. At least two support columns 5 are provided, respectively arranged on both sides of the support plate 3. The support column 5 is installed at the bottom of the heating protective cover 1.

[0022] A clamping step for clamping the support plate 3 is provided on the support column 5.

[0023] In order to better match the size of the support plate 3, the edge of the support plate 3 is welded to the inner side of the heating protective cover 1. The shape of the support plate 3 is the same as the upper top plate and the lower pressing plate of the heating protective cover 1.

[0024] In order to realize the positioning of the double-headed screw rod 4 and the support column 5, a first through-hole 11 matching the double-headed screw rod 4 is provided on the lower pressing plate of the heating protective cover 1; a second through-hole 13 matching the support column 5 is also provided on the lower pressing plate of the heating protective cover 1.

[0025] The heating pipe 2 is arranged in a "one" shape or a "冂" shape or an "S" shape, and can be flexibly replaced according to the requirements of steel drum repair or processing, meeting different scenarios such as local heating, stress elimination, and weld preheating. It should be noted that although three shapes of heating pipes are provided in this solution, other shapes of heating pipes can also be used in practice, and can be specifically used according to requirements.

[0026] An arc-shaped raised edge 14 for cooperating with the double-headed screw rod 4 to be clamped is provided on the lower pressing plate. One end of the double-headed screw rod 4 is screwed into the arc-shaped raised edge 14 and set upward, and is locked and positioned by a bolt, facilitating the fixation of one side of the double-headed screw rod 4. At least two double-headed screw rods 4 are provided, which can better maintain stability during the heating process.

[0027] Working principle:

[0028] 1. Installation and positioning:

[0029] The open side of the heating protective cover 1 is attached to the area to be heated in the steel barrel. The double-ended screw 4 is screwed into the external structural threaded hole to achieve the positioning effect. The arc-shaped protruding edge 14 is in close contact with the surface of the steel barrel. The double-ended screw 4 is screwed into the arc-shaped protruding edge 14 with the upward side and locked and fixed with bolts.

[0030] The support plate 3 is pressed onto the locking step of the support column 5 to maintain the optimal distance between the heating tube 2 and the surface of the steel barrel;

[0031] 2. Heating process:

[0032] After the heating tube 2 is activated, the heat is evenly transferred to the entire storage cavity 12 of the heating protective cover 1. The arc-shaped structure of the heating protective cover 1 focuses the heat and reflects it to the surface of the steel barrel, forming a local heating area.

[0033] The enclosed storage chamber 12 of the heating shield 1 reduces heat loss and improves thermal efficiency; the open side allows operators to monitor the heating status in real time.

[0034] By adjusting the power and heating time of heating tube 2, a specific area is heated in a gradient. The principle of thermal expansion and contraction is used to make the deformed area shrink or extend. With the forced fixation of double-headed screw 4, the shape of the steel barrel is gradually restored. It can also be used to uniformly increase the temperature of the weld area during preheating before welding, thereby reducing residual stress after welding.

[0035] 3. Safety protection and maintenance:

[0036] After heating is complete, turn off the power and keep the heating shield 1 closed. Use the residual heat to slowly cool the steel drum to avoid sudden cooling that could cause the material to become brittle.

[0037] This device, through its arc-shaped fitting design and modular structure, solves the problems of existing technologies, such as the lack of local heating structures for steel drums, poor contact between the heating device and the steel drum, low heat utilization, and complex operation. It achieves efficient, safe, and adjustable local heating, and has significant industrial application value.

[0038] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A steel drum local heating device characterized by, The utility model provides a heating protective cover (1) including arc column structure, the heating protective cover (1) is one side open type arrangement, the heating protective cover (1) includes the inward recessed arrangement of article cavity (12), heating pipe (2) is installed in article cavity (12), heating pipe (2) is installed on support plate (3), the bottom of heating protective cover (1) is connected with the double -end screw rod (4) for positioning.

2. A steel drum partial heating apparatus according to claim 1, characterized in that: The support plate (3) is installed on the upright support column (5), the support column (5) is provided with at least two, and is provided on both sides of the support plate (3), respectively, the support column (5) is installed on the bottom of the heating protective cover (1).

3. A steel drum partial heating apparatus according to claim 2, characterized in that: The support column (5) is provided with a clamping step for clamping the support plate (3).

4. A steel drum partial heating apparatus according to claim 2 or 3, characterised in that: The edge of the support plate (3) is welded to the inner side of the heating protective cover (1), and the shape of the support plate (3) is consistent with the upper top plate and the lower pressing plate of the heating protective cover (1).

5. A steel drum partial heating apparatus as defined in claim 4, wherein: The lower pressing plate of the heating protective cover (1) is provided with a first through hole (11) matched with the double-end screw rod (4). The lower pressing plate of the heating protective cover (1) is also provided with a second through hole (13) matched with the support column (5).

6. A steel drum partial heating apparatus according to claim 5, characterized in that: The heating pipe (2) is arranged in the shape of "one", "Hou" or "S".

7. A steel drum partial heating apparatus according to claim 6, characterized in that: The lower pressing plate is provided with an arc convex edge (14) for cooperating with the double-end screw rod (4), one end of the double-end screw rod (4) is screwed into the arc convex edge (14) and is positioned by bolt locking.

8. A steel drum partial heating apparatus according to claim 7, characterized in that: The double-end screw rod (4) is provided with at least two.

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