Explosion-proof smelting furnace cover
By using a combination of limit posts and springs in the furnace cover, along with the design of slide rails and explosion-proof plates, the explosion-proof problem of the furnace cover when there is an imbalance of internal and external pressure is solved, achieving pressure balance and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HENGTONG NEW MATERIALS CO LTD
- Filing Date
- 2024-12-17
- Publication Date
- 2026-04-21
AI Technical Summary
The existing furnace lid is prone to splashing and cracking when the internal and external pressures are unbalanced, resulting in low safety performance.
An explosion-proof smelting furnace cover was designed. By using a combination of a first limiting post, a second limiting post, a first spring, a second spring, a first limiting plate, and a second limiting plate, the pressure relief function is achieved. The explosion-proof performance is enhanced by the combination of a slide rail, a slider, a connecting plate, and an explosion-proof plate.
When the internal and external pressures are unbalanced, the gas pressure is balanced, preventing the furnace cover from bursting and improving the safety and explosion-proof performance of the furnace.
Smart Images
Figure CN224151425U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smelting furnace cover technology, and in particular to an explosion-proof smelting furnace cover. Background Technology
[0002] The melting furnace uses a 200~2500Hz medium-frequency power supply for induction heating, with a power range of 20~2500KW. Based on its characteristics, it can also be called a medium-frequency electric furnace. It is mainly used for melting and heating precious metals such as gold, platinum, silver, copper, iron, stainless steel, aluminum alloys, and other metals. It is an ideal piece of equipment for university laboratories, research institutes, jewelry processing, and precision casting. The power supply uses imported IGBT power devices, making it more integrated and miniaturized, with an effective output power of over 90%, saving energy—60% more energy than traditional thyristor-controlled medium-frequency furnaces.
[0003] Extensive research revealed that existing smelting furnaces are generally equipped with furnace covers during use. However, the current furnace covers have a relatively simple function, and once the pressure inside and outside the smelting furnace becomes unbalanced, the furnace covers are prone to splashing and cracking, resulting in low safety performance.
[0004] Therefore, it is necessary to provide an explosion-proof smelting furnace cover to solve the above-mentioned technical problems. Utility Model Content
[0005] This utility model provides an explosion-proof smelting furnace cover, which solves the problems in the background art.
[0006] To solve the above-mentioned technical problems, this utility model provides an explosion-proof smelting furnace cover, including a furnace cover body. A sealing plate is provided inside the furnace cover body. A second limiting post is slidably inserted into the surface of the sealing plate. A second limiting plate is provided at the top of the second limiting post. A first limiting post is vertically installed on the top surface of the second limiting plate. The top of the first limiting post penetrates the top surface of the furnace cover body and is provided with the first limiting plate. A first spring is provided on the top surface of the second limiting plate, sleeved on the outside of the first limiting post. A second spring is provided on the bottom surface of the second limiting plate, sleeved on the outside of the second limiting post.
[0007] Preferably, a slide rail is provided on the periphery of the furnace cover body, and a slider is slidably connected inside the slide rail. A connecting rod is provided at one end of the slider, and an explosion-proof plate is provided at the top of the connecting rod. The explosion-proof plate is located on the top surface of the furnace cover body.
[0008] Preferably, multiple connecting rods are provided, and the multiple connecting rods are installed at equal intervals on the periphery of the explosion-proof plate.
[0009] Preferably, the sealing plate has a through hole on its surface, and the inner diameter of the through hole is equal to the outer diameter of the second limiting post.
[0010] Preferably, multiple through holes are provided, and the multiple through holes are equally spaced around the surface of the sealing plate, and a second limiting post is slidably inserted into the interior of each through hole.
[0011] Compared with related technologies, the explosion-proof smelting furnace cover provided by this utility model has the following beneficial effects:
[0012] 1. Compared with existing technologies, this explosion-proof smelting furnace cover, through the coordinated use of a first limiting post, a second limiting post, a first spring, a second spring, a first limiting plate, and a second limiting plate, facilitates pressure relief in the smelting furnace, thereby enabling the furnace cover body to function as an explosion-proof device. When the gas pressure inside the smelting furnace becomes unbalanced with the external pressure, the internal gas pressure pushes the second limiting post upwards. Then, the movement of the second limiting post stretches the second spring and compresses the first spring, causing the first limiting plate to move away from the top surface of the furnace cover body. This allows external gas to enter the smelting furnace, thus balancing the internal gas pressure. This method is simple to operate and facilitates the explosion-proof function of the furnace cover body. Through the coordinated use of a slide rail, a slider, a connecting plate, and an explosion-proof plate, after the internal pressure of the smelting furnace pushes open the first and second limiting plates, the first limiting plate will press upwards against the explosion-proof plate. Then, the explosion-proof plate drives the connecting rod, causing the slider to slide inside the slide rail. Thus, under the limiting effect of the explosion-proof plate, the explosion-proof performance of the furnace cover body is further improved. Attached Figure Description
[0013] Figure 1 This utility model provides a structural schematic diagram of an explosion-proof smelting furnace cover;
[0014] Figure 2 A schematic diagram of the internal structure of an explosion-proof smelting furnace cover provided by this utility model;
[0015] Figure 3 A schematic diagram of the connecting rod structure of an explosion-proof smelting furnace cover provided by this utility model;
[0016] Figure 4 A schematic diagram of the through-hole structure of an explosion-proof smelting furnace cover provided by this utility model.
[0017] Numbering on the map:
[0018] 1. Furnace cover body; 2. Explosion-proof plate; 3. First limiting plate; 4. First limiting post; 5. First spring; 6. Second limiting plate; 7. Sealing plate; 8. Second spring; 9. Connecting rod; 10. Slide rail; 11. Slider; 12. Through hole; 13. Second limiting post. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] First Embodiment
[0021] Please refer to the following: Figure 1-4 An explosion-proof smelting furnace cover includes a furnace cover body 1. A sealing plate 7 is provided inside the furnace cover body 1. A second limiting post 13 is slidably inserted into the surface of the sealing plate 7. A second limiting plate 6 is provided at the top of the second limiting post 13. A first limiting post 4 is vertically installed on the top surface of the second limiting plate 6. The top of the first limiting post 4 penetrates the top surface of the furnace cover body 1 and is provided with the first limiting plate 3. A first spring 5 is provided on the top surface of the second limiting plate 6, sleeved on the outside of the first limiting post 4. A second spring 8 is provided on the bottom surface of the second limiting plate 6, sleeved on the outside of the second limiting post 13.
[0022] By using the first limiting post 4, the second limiting post 13, the first spring 5, the second spring 8, the first limiting plate 3, and the second limiting plate 6 in combination, the furnace can be depressurized, thus enabling the furnace cover body 1 to function as an explosion-proof device. When the gas pressure inside the furnace is unbalanced with the external pressure, the gas pressure inside the furnace will push the second limiting post 13 upward. Then, as the second limiting post 13 moves, it stretches the second spring 8 and compresses the first spring 5, thereby moving the first limiting plate 3 away from the top surface of the furnace cover body 1, allowing external gas to enter the furnace and thus balancing the internal gas pressure. This method is simple to operate and makes it easy for the furnace cover body 1 to function as an explosion-proof device.
[0023] The working principle of the explosion-proof smelting furnace cover provided by this utility model is as follows:
[0024] When the internal pressure of this explosion-proof smelting furnace cover becomes unbalanced with the external pressure, the internal pressure of the furnace pushes the second limiting post 13 upward. Then, the movement of the second limiting post 13 stretches the second spring 8 and compresses the first spring 5, causing the first limiting plate 3 to move away from the top surface of the furnace cover body 1. This allows external gas to enter the furnace, thus balancing the internal pressure. This method is simple to operate and facilitates the explosion-proof function of the furnace cover body 1. Through the coordinated use of the slide rail 10, slider 11, connecting plate, and explosion-proof plate 2, the internal pressure of the furnace pushes open the first limiting plate 3 and the second limiting plate 6. The first limiting plate 3 then presses the explosion-proof plate 2 upward. The explosion-proof plate 2 then drives the connecting rod 9, causing the slider 11 to slide within the slide rail 10. Under the limiting effect of the explosion-proof plate 2, the explosion-proof performance of the furnace cover body 1 is further improved.
[0025] Compared with related technologies, the explosion-proof smelting furnace cover provided by this utility model has the following beneficial effects:
[0026] This type of explosion-proof smelting furnace cover, through the coordinated use of a first limiting post 4, a second limiting post 13, a first spring 5, a second spring 8, a first limiting plate 3, and a second limiting plate 6, facilitates pressure relief of the smelting furnace, thereby enabling the furnace cover body 1 to function as an explosion-proof device. When the gas pressure inside the smelting furnace becomes unbalanced with the external pressure, the gas pressure inside the smelting furnace will push the second limiting post 13 upwards. Then, under the movement of the second limiting post 13, the second spring 8 is stretched and the first spring 5 is compressed, thereby causing the first limiting plate 3 to move away from the top surface of the furnace cover body 1. The method allows external gases to enter the smelting furnace, thereby balancing the internal gas pressure. This method is simple to operate and facilitates the explosion-proof function of the furnace cover body 1. By setting up the slide rail 10, slider 11, connecting plate, and explosion-proof plate 2 in cooperation, the pressure inside the smelting furnace pushes open the first limiting plate 3 and the second limiting plate 6. The first limiting plate 3 will then squeeze the explosion-proof plate 2 upward. After that, the explosion-proof plate 2 drives the connecting rod 9 to make the slider 11 slide inside the slide rail 10. Thus, under the limitation of the explosion-proof plate 2, the explosion-proof performance of the furnace cover body 1 is further improved.
[0027] Second Embodiment
[0028] Please refer to the following: Figure 1-4 Based on the explosion-proof smelting furnace cover provided in the first embodiment of this application, the second embodiment of this application proposes another explosion-proof smelting furnace cover. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.
[0029] Specifically, the second embodiment of this application provides an explosion-proof smelting furnace cover that differs in that a slide rail 10 is provided on the side of the furnace cover body 1, and a slider 11 is slidably connected inside the slide rail 10. A connecting rod 9 is provided at one end of the slider 11, and an explosion-proof plate 2 is provided at the top of the connecting rod 9. The explosion-proof plate 2 is located on the top surface of the furnace cover body 1. By using the slide rail 10, slider 11, connecting plate, and explosion-proof plate 2 in combination, after the pressure inside the smelting furnace pushes open the first limiting plate 3 and the second limiting plate 6, the first limiting plate 3 will squeeze the explosion-proof plate 2 upward. Then, the explosion-proof plate 2 drives the connecting rod 9 to make the slider 11 slide inside the slide rail 10, thereby further improving the explosion-proof performance of the furnace cover body 1 under the limitation of the explosion-proof plate 2.
[0030] In this technical solution, multiple connecting rods 9 are provided, and the multiple connecting rods 9 are installed at equal intervals on the sides of the explosion-proof plate 2. By providing multiple connecting rods 9, the stability of the connection between the explosion-proof plate 2 and the furnace cover body 1 can be improved.
[0031] In this technical solution, a through hole 12 is provided on the surface of the sealing plate 7. The inner diameter of the through hole 12 is equal to the outer diameter of the second limiting post 13. By setting the inner diameter of the through hole 12 to be equal to the outer diameter of the second limiting post 13, the stability of the diameters of the second limiting post 13 and the through hole 12 can be improved.
[0032] In this technical solution, multiple through holes 12 are provided, and the multiple through holes 12 are equally spaced around the surface of the sealing plate 7. Each through hole 12 is slidably inserted with a second limiting post 13. By providing multiple through holes 12, it is convenient to install multiple second limiting posts 13 at the same time, which helps to improve the explosion-proof performance of the furnace cover body 1.
[0033] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.
[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An explosion-proof smelting furnace cover comprising a furnace cover body (1), characterized in that, The furnace cover body (1) is provided with a sealing plate (7) inside. A second limiting post (13) is slidably inserted on the surface of the sealing plate (7). A second limiting plate (6) is provided at the top of the second limiting post (13). A first limiting post (4) is vertically installed on the top surface of the second limiting plate (6). The top of the first limiting post (4) penetrates the top surface of the furnace cover body (1) and is provided with the first limiting plate (3). A first spring (5) is provided on the top surface of the second limiting plate (6) sleeved on the outside of the first limiting post (4). A second spring (8) is provided on the bottom surface of the second limiting plate (6) sleeved on the outside of the second limiting post (13).
2. A cover for an explosion-proof smelting furnace according to claim 1, characterized in that The furnace cover body (1) has a slide rail (10) on its periphery. A slider (11) is slidably connected inside the slide rail (10). A connecting rod (9) is provided at one end of the slider (11). An explosion-proof plate (2) is provided at the top of the connecting rod (9). The explosion-proof plate (2) is located on the top surface of the furnace cover body (1).
3. A cover for an explosion-proof smelting furnace according to claim 2, characterized in that Multiple connecting rods (9) are provided, and the multiple connecting rods (9) are installed at equal intervals on the periphery of the explosion-proof plate (2).
4. The explosion-proof smelting furnace cover according to claim 1, characterized in that The sealing plate (7) has a through hole (12) on its surface, and the inner diameter of the through hole (12) is equal to the outer diameter of the second limiting post (13).
5. A cover for an explosion-proof smelting furnace according to claim 4, characterized in that The through holes (12) are provided in multiple ways, and the multiple through holes (12) are equally spaced around the surface of the sealing plate (7), and a second limiting post (13) is slidably inserted into the interior of each through hole (12).