A furnace cover for an electric fused magnesia furnace
By improving the structural design of the furnace cover of the fused magnesia furnace and adopting a combination of components such as a base plate, locking bolts, clamping plates, anti-slip pads, and limit rods, the furnace cover of the fused magnesia furnace can be quickly installed and easily maintained. This solves the problem of cumbersome bolt connections in the existing technology and improves operating efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN JIUMU SHENGYAN NEW MATERIAL CO LTD
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-17
AI Technical Summary
The existing fused magnesia furnace cover is fixed to the furnace body by multiple sets of bolts, making the maintenance and installation process cumbersome and time-consuming.
A furnace cover for an electric fused magnesia furnace was designed, which adopts a structure of base plate, locking bolts, clamping plate, anti-slip pad, limiting rod and limiting hole. Through the cooperation of these components, the furnace cover is stably squeezed and positioned with the furnace body, and can be quickly disengaged by rotating the shaft, reducing the number of bolts and operation steps.
It significantly reduces the installation time of the furnace cover for fused magnesia furnaces, simplifies the maintenance process, improves operational convenience and stability, and reduces the number of bolts used.
Smart Images
Figure CN224517401U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric melting furnace technology, specifically to a furnace cover for an electric fused magnesia furnace. Background Technology
[0002] The fused magnesia furnace is an indispensable piece of basic equipment in modern high-temperature industry. It transforms ordinary ore into high-purity fused magnesia with excellent performance through the extreme method of electric arc heating, providing materials that can withstand ultra-high temperatures for national basic industries such as steel and building materials. Its core characteristics are high temperature, high energy consumption, and high technical requirements.
[0003] The existing furnace cover for fused magnesia furnaces requires multiple sets of bolts to be connected and fixed to the furnace body. Disassembly and maintenance are extremely time-consuming, and installation also requires precise positioning before bolt installation, making the process cumbersome. To address these issues, an innovative design was developed based on the existing furnace cover for fused magnesia furnaces. Utility Model Content
[0004] The purpose of this utility model is to provide a furnace cover for an electric fused magnesia furnace to solve at least one of the technical problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a furnace cover for an electric fused magnesia furnace, comprising a furnace cover body, a fixing plate installed on the top surface of the straight edge of the furnace cover body, a rotating shaft installed on the inner side of the top of the fixing plate, and the end of the rotating shaft being connected and fixed to one side of a base plate. An upper stabilizing hole is provided through the middle of the substrate. A locking bolt is installed through the upper stabilizing hole. A locking nut is installed at the bottom of the locking bolt. A lower stabilizing hole is provided through the bottom of the locking bolt. The lower stabilizing hole is located in the middle of the clamping plate. An anti-slip pad is fixedly installed on the top surface of one end of the clamping plate, and a limiting rod is fixedly installed on the top surface of the other end of the clamping plate. The top of the limiting rod is in contact with the bottom of the inner wall of the limiting hole, and the limiting hole is opened on the bottom surface of the other end of the substrate.
[0006] Preferably, the furnace cover body has an installation opening at the top center, an observation window at the top center, and connection holes at the edge.
[0007] Preferably, the fixing plates are symmetrically distributed about the center of the substrate, and the fixing plates are attached to the side of the substrate.
[0008] Preferably, the top view width of the substrate is greater than the diameter of the connecting hole, and the width of the substrate is the same as the width of the clamping plate.
[0009] Preferably, the locking bolt is slidably connected to both the upper and lower stabilizing holes, and the center of the locking bolt is on the same vertical plane as the center of the base plate and the clamping plate.
[0010] Preferably, the thickness of the anti-slip pad is greater than 1 / 3 of the thickness of the clamping plate, and the top view length of the anti-slip pad is greater than 1 / 3 of the top view length of the clamping plate.
[0011] Preferably, the limiting rod is slidably connected to the limiting hole. The top view cross-sectional shapes of the limiting rod and the limiting hole are both square. The front view cross-sectional shape of the limiting rod is "T"-shaped, and the front view cross-sectional shape of the limiting hole is an inverted "convex" shape.
[0012] Preferably, the center of the limiting rod and the center of the locking bolt are on the same vertical plane, and the width of the limiting rod is greater than 1 / 3 of the diameter of the locking bolt.
[0013] Preferably, the sum of the distance from the top surface of the limiting rod to the inner top surface of the limiting hole and the thickness of the straight part of the edge of the furnace cover body is greater than the distance from the top surface of the anti-slip pad to the bottom edge of the furnace cover body.
[0014] The furnace cover of the fused magnesia furnace of the present utility model has the following beneficial effects: Adopting a new structural design, it not only greatly reduces the number of bolts required for the installation of the furnace cover of the fused magnesia furnace, but also can stably lock the furnace cover of the fused magnesia furnace. At the same time, it also greatly shortens the installation time of the furnace cover of the fused magnesia furnace, which is convenient for maintenance; 1. Through the cooperation of the base plate, locking bolt, locking nut, clamping plate and anti-slip pad, it can stably squeeze and position the edge of the furnace cover body and the edge of the furnace body, thus greatly reducing the bolts used for connection and being convenient to operate; 2. The structural design of the limiting rod and the limiting hole ensures the stability of the clamping plate during disassembly and installation, avoiding the clamping plate from being skewed. And through the structural design of the fixing plate and the rotating shaft, the base plate can quickly rotate away with the locking bolt and the clamping plate, facilitating the quick disassembly of the furnace cover body. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a front view structural schematic diagram of the present utility model; Figure 2 It is a top view structural schematic diagram of the present utility model; Figure 3 It is a front view cross-sectional structural schematic diagram of the base plate and the clamping plate of the present utility model; Figure 4This is a bottom view of the substrate, upper stabilizing hole, and limiting hole of this utility model; Figure 5 This is a side view sectional diagram of the upper and lower stabilizing holes of this utility model; Figure 6 This is a top view of the clamping plate, anti-slip pad, and limiting rod of this utility model.
[0017] [Explanation of Key Component Symbols] 1. Furnace cover body; 2. Mounting port; 3. Observation window; 4. Connection hole; 5. Fixing plate; 6. Rotating shaft; 7. Base plate; 8. Upper stabilizing hole; 9. Locking bolt; 10. Locking nut; 11. Lower stabilizing hole; 12. Clamping plate; 13. Anti-slip pad; 14. Limiting rod; 15. Limiting hole. Detailed Implementation
[0018] The furnace cover of the fused magnesia furnace of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0023] Please see Figure 1-6 This utility model provides a technical solution: a furnace cover for an electric fused magnesia furnace, comprising a furnace cover body 1, an installation port 2, an observation window 3, a connecting hole 4, a fixing plate 5, a rotating shaft 6, a base plate 7, an upper stabilizing hole 8, a locking bolt 9, a locking nut 10, a lower stabilizing hole 11, a clamping plate 12, an anti-slip pad 13, a limiting rod 14, and a limiting hole 15. A fixing plate 5 is installed on the top surface of the straight edge of the furnace cover body 1, and a rotating shaft 6 is installed on the inner side of the top of the fixing plate 5. The end of the rotating shaft 6 is connected and fixed to one side of the base plate 7. An upper stabilizing hole 8 is provided through the middle of the substrate 7. A locking bolt 9 is installed through the upper stabilizing hole 8. A locking nut 10 is installed at the bottom of the locking bolt 9. A lower stabilizing hole 11 is provided through the bottom of the locking bolt 9. The lower stabilizing hole 11 is located in the middle of the clamping plate 12. An anti-slip pad 13 is fixedly installed on the top surface of one end of the clamping plate 12, and a limiting rod 14 is fixedly installed on the top surface of the other end of the clamping plate 12. The top of the limiting rod 14 is in contact with the bottom of the inner wall of the limiting hole 15, and the limiting hole 15 is opened on the bottom surface of the other end of the substrate 7.
[0024] In this example, the furnace cover body 1 has an installation port 2 at the top center, an observation window 3 at the top center, and a connection hole 4 at the edge. The above structural design facilitates the installation of various pipes, monitoring equipment, and control valves, makes it easy to observe the situation inside the furnace, and also facilitates the installation of bolts connecting the furnace body.
[0025] In this example, the fixing plate 5 is symmetrically distributed about the center of the substrate 7. The fixing plate 5 is attached to the side of the substrate 7. The above structural design ensures that the substrate 7 has high stability when it is in static use and when it is rotated for adjustment.
[0026] In this example, the top view width of the substrate 7 is greater than the diameter of the connecting hole 4, and the width of the substrate 7 is the same as the width of the clamping plate 12. The above structural design makes the structural strength of the substrate 7 and the clamping plate 12 high, and can be used stably without deformation.
[0027] In this example, the locking bolt 9 is slidably connected to the upper stabilizing hole 8 and the lower stabilizing hole 11. The center of the locking bolt 9 is on the same vertical plane as the center of the base plate 7 and the clamping plate 12. The above structural design makes the connection between the locking bolt 9 and the base plate 7 and the clamping plate 12 stable.
[0028] In this example, the thickness of the anti-slip pad 13 is greater than 1 / 3 of the thickness of the clamping plate 12, and the top view length of the anti-slip pad 13 is greater than 1 / 3 of the top view length of the clamping plate 12. The above structural design enables the anti-slip pad 13 to fit stably against the bottom edge of the furnace body over a large area.
[0029] In this example, the limiting rod 14 and the limiting hole 15 are slidably connected. The top view cross-sectional shape of both the limiting rod 14 and the limiting hole 15 is square. The front view cross-sectional shape of the limiting rod 14 is "T" shaped, and the front view cross-sectional shape of the limiting hole 15 is an inverted "convex" shape. The above structural design allows the limiting rod 14 and the limiting hole 15 to slide stably relative to each other, and the limiting rod 14 will not rotate within the limiting hole 15, thus achieving the limitation of the clamping plate 12.
[0030] In this example, the center of the limiting rod 14 and the center of the locking bolt 9 are on the same vertical plane. The width of the limiting rod 14 is greater than 1 / 3 of the diameter of the locking bolt 9. The above structural design makes the limiting rod 14 stably aligned with the locking bolt 9 and has sufficient structural strength to limit the locking bolt 9.
[0031] In this example, the sum of the distance from the top surface of the limiting rod 14 to the inner top surface of the limiting hole 15 and the thickness of the straight part of the edge of the furnace cover body 1 is greater than the distance from the top surface of the anti-slip pad 13 to the bottom edge of the furnace cover body 1. The above structural design ensures that the upward movement distance of the clamping plate 12 is sufficient to stably squeeze the top edge of the furnace body and the bottom edge of the furnace cover body 1 to fit and fix.
[0032] Working principle: During installation, if... Figure 3 As shown, place the furnace cover body 1 on the top of the furnace body of the fused magnesia furnace, align and fit the bottom edge of the furnace cover body 1 with the top edge of the furnace body, screw on the locking nut 10, the locking nut 10 pushes the clamping plate 12 to slide up along the locking bolt 9, the clamping plate 12 with the limiting rod 14 slides vertically up along the limiting hole 15 until the anti-slip pad 13 is stably fitted with the bottom surface of the top edge of the furnace body, the clamping plate 12 and the base plate 7 stably press and fix the top edge of the furnace body and the bottom edge of the furnace cover body 1, stop rotating the locking nut 10, and then use the bolt to pass through the connecting hole 4 and the hole opened on the top edge of the furnace body to connect and lock; During disassembly and maintenance, first remove the fewer bolts installed in the connecting holes 4, then slightly unscrew the locking nut 10. The clamping plate 12 slides down along the locking bolt 9, and the anti-slip pad 13 separates from the bottom surface of the top edge of the furnace body. Figure 3 The base plate 7 rotates clockwise around the pivot 6 and tilts up, causing the clamping plate 12 to rotate rapidly and completely separate from the top edge of the furnace body, so that the furnace cover body 1 can be quickly hoisted and transferred.
[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.
Claims
1. An electrically fused magnesia furnace cover, characterized in that, Comprising: A furnace cover body (1), on the top surface of the straight part of the edge of the furnace cover body (1), a fixing plate (5) is installed, on the inner side of the top of the fixing plate (5), a rotating shaft (6) is installed, and the end of the rotating shaft (6) is fixedly connected to one side of the substrate (7); A through upper stabilizing hole (8) is provided in the middle of the substrate (7), a locking bolt (9) is installed through the upper stabilizing hole (8), a locking nut (10) is installed at the bottom end of the locking bolt (9), the bottom of the locking bolt (9) penetrates through the lower stabilizing hole (11), and the lower stabilizing hole (11) is provided in the middle of the clamping plate (12); On the top surface of one end of the clamping plate (12), an anti-slip pad (13) is fixedly installed, on the top surface of the other end of the clamping plate (12), a limiting rod (14) is fixedly installed, the top end of the limiting rod (14) fits against the bottom of the inner wall of the limiting hole (15), and the limiting hole (15) is provided on the bottom surface of the other end of the substrate (7).
2. An electric fused magnesia furnace cover according to claim 1, characterised in that: An installation opening (2) is provided at the center of the top of the furnace cover body (1), an observation window (3) is provided at the center of the top of the furnace cover body (1), and a connection hole (4) is provided at the edge of the furnace cover body (1).
3. An electric fused magnesia furnace cover according to claim 1, characterized in that: The fixing plates (5) are symmetrically distributed about the center of the substrate (7), and the fixing plates (5) are in contact with the side surface of the substrate (7).
4. An electric fused magnesia furnace cover according to claim 1, characterized in that: The width of the substrate (7) in the top view is greater than the diameter of the connection hole (4), and the width of the substrate (7) is the same as the width of the clamping plate (12).
5. An electric fused magnesia furnace cover according to claim 1, characterized in that: The locking bolt (9) is slidably connected to both the upper stabilizing hole (8) and the lower stabilizing hole (11), and the center of the locking bolt (9) is on the same vertical plane as the centers of the substrate (7) and the clamping plate (12).
6. An electric fused magnesia furnace cover according to claim 1, characterized in that: The thickness of the anti-slip pad (13) is greater than 1 / 3 of the thickness of the clamping plate (12), and the length of the anti-slip pad (13) in the top view is greater than 1 / 3 of the length of the clamping plate (12) in the top view.
7. An electric fused magnesia furnace cover according to claim 1, characterized in that: The limiting rod (14) is slidably connected to the limiting hole (15), the top view cross-sectional shapes of the limiting rod (14) and the limiting hole (15) are both square, the front view cross-sectional shape of the limiting rod (14) is a "T" shape, and the front view cross-sectional shape of the limiting hole (15) is an inverted "convex" shape.
8. The furnace cover for an electric fused magnesia furnace according to claim 1, characterized in that: The center of the limiting rod (14) is on the same vertical plane as the center of the locking bolt (9), and the width of the limiting rod (14) is greater than 1 / 3 of the diameter of the locking bolt (9).
9. A furnace cover for an electrofused magnesia furnace according to claim 1, characterized in that: The sum of the distance from the top surface of the limiting rod (14) to the inner top surface of the limiting hole (15) and the thickness of the straight part of the edge of the furnace cover body (1) is greater than the distance from the top surface of the anti-slip pad (13) to the bottom edge of the furnace cover body (1).