A refining furnace filtering device for purifying molten steel

Abstract

The utility model is suitable for the technical field of refining furnace, provide a kind of refining furnace filtering device for molten steel purification, including;Furnace body;Top cover, the top cover is arranged at the top of furnace body, and top fixed mounting has support plate;Vacuum pump, the vacuum pump is fixedly installed at the top of support plate;Rotary filtering structure, the rotary filtering structure is arranged between vacuum pump and top cover, rotary filtering is carried out below vacuum pump.Compared with prior art, the beneficial effects of the utility model are: in use, by setting rotary filtering structure between top cover and vacuum pump, then the position of filter core on different positions can be rotated and replaced, so that it is sequentially aligned with vacuum pump, so that the filter core under vacuum pump is replaced with the filter core in other through holes after a period of time, so that the filter core can filter the air pumped by vacuum pump for a long time, so that vacuum pump can pump the furnace body for a long time, reduce the consumption of heat energy.

Description

Technical Field

[0001] This utility model belongs to the field of refining furnace technology, and in particular relates to a refining furnace filtration device for purifying molten steel. Background Technology

[0002] In order to ensure the quality of special steel, after rough refining, the raw materials for special steel are refined multiple times in a refining furnace.

[0003] Refining furnaces are further divided into LF refining furnaces and RH refining furnaces, which operate on different principles. In the RH refining furnace, a vacuum pump is used to reduce the gas pressure inside the furnace during refining, thereby reducing the energy consumption of the furnace. However, when the vacuum pump is pumping air, it also draws in the steam generated during steel refining. Since the steam generated during refining contains a certain amount of metal powder and there is no filter structure, the metal powder is drawn into the vacuum pump along with the steam, which impacts the internal parts of the vacuum pump and causes damage to the vacuum pump.

[0004] Therefore, how to provide a refining furnace filtration device for molten steel purification is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a refining furnace filtration device for purifying molten steel, aiming to solve the problems mentioned in the background art.

[0006] This utility model is implemented as follows: a refining furnace filtration device for purifying molten steel, comprising;

[0007] Furnace body;

[0008] The top cover is located on the top of the furnace body, and a support plate is fixedly installed on the top.

[0009] A vacuum pump, which is fixedly mounted on the top of a support plate;

[0010] A rotary filter structure is disposed between the vacuum pump and the top cover to perform rotary filtration below the vacuum pump.

[0011] The rotary filter structure includes a first rotary toothed disc, an electric gear, and a protective cover. The protective cover is fixedly installed at the bottom of the top of the support plate. The first rotary toothed disc is slidably disposed at the bottom of the protective cover. Both the surface of the first rotary toothed disc and the protective cover are provided with through holes. A filter element is placed inside the through hole on the surface of the first rotary toothed disc. The electric gear is disposed at the top of the top cover and is connected to the side of the first rotary toothed disc for transmission.

[0012] Preferably, the top of the top cover is provided with a sliding groove, a sliding plate is slidably disposed inside the sliding groove, and a groove is provided at the inner end. A scraping structure is provided at the top of the groove to clean the bottom of the filter element in the upper through hole. A transmission structure is provided on the surface of the sliding plate. The transmission structure is connected to the side of the first rotating toothed disc. The front side of the transmission structure is connected to the scraping structure.

[0013] Preferably, the transmission structure includes a second rotating toothed disc and a steering gear. The steering gear is movably disposed on the top of the top cover and is connected to the first rotating toothed disc on its inner side. The second rotating toothed disc is movably disposed on the top of the slide plate and has a toothed roller fixedly installed on its top, which is connected to the steering gear. The right side of the second rotating toothed disc is connected to the scraping structure.

[0014] Preferably, the scraping structure includes a rotating ring and an elastic scraper. The rotating ring is slidably disposed at the top of the groove and is connected to the scraping structure on its left side. The elastic scraper is fixedly installed at the inner end of the rotating ring and its top is in movable contact with the bottom of the filter element in the upper through hole.

[0015] Preferably, a movable cover is hinged inside the through hole on the outer side of the protective cover. The movable cover is positioned corresponding to the filter element, and its diameter is greater than that of the filter element.

[0016] Preferably, the groove is located below the rotational position of the through hole, and the diameter of the groove is greater than the diameter of the filter element.

[0017] Preferably, a support bracket is provided on the outer side of the furnace body, and a support rotating ring is provided at the top of the support bracket. The furnace body is inserted into the middle of the support rotating ring. Electric telescopic rods are symmetrically provided on the top of both sides of the support bracket. A top plate is fixedly installed on the top of the electric telescopic rod, and the top of the top plate is fixedly connected to the side of the top cover.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, by setting a rotating filter structure between the top cover and the vacuum pump, the positions of the filter elements at different locations can be rotated and replaced, aligning them sequentially with the vacuum pump. This allows the filter elements that have been filtering through the through holes below the vacuum pump for a period of time to be replaced with the filter elements in other through holes, thus enabling the filter elements to filter the air drawn by the vacuum pump for a long time. This allows the vacuum pump to evacuate the furnace for an extended period of time, reducing heat energy consumption.

[0019] Meanwhile, by opening a slider on the top of the top cover, opening a groove on the inner end of the slider, setting a transmission structure on the slider, and setting a scraping structure connected to the transmission structure on the top of the groove, when the rotating filter structure is working, it can drive the transmission structure to rotate, thereby driving the scraping structure to clean the metal powder that has moved to the bottom of the upper filter element, thus extending the service life of the filter element and reducing the number of filter element replacements. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 A schematic diagram of the overall appearance structure of a refining furnace filtration device for purifying molten steel, provided for an embodiment of this utility model;

[0022] Figure 2 A front cross-sectional view of a refining furnace filtration device for purifying molten steel, provided as an embodiment of this utility model;

[0023] Figure 3 A left oblique sectional view of a refining furnace filtration device for purifying molten steel, provided as an embodiment of this utility model;

[0024] Figure 4 A top-bottom view of a refining furnace filtration device for purifying molten steel, provided as an embodiment of this utility model;

[0025] Figure 5 Provided for the embodiments of this utility model Figure 3 A magnified structural diagram of part A.

[0026] In the diagram: 1-Support bracket, 2-Support rotating ring, 3-Furnace body, 4-Electric telescopic rod, 5-Top plate, 6-Support plate, 7-Vacuum pump, 8-First rotating gear, 9-Electric gear, 10-Top cover, 11-Slide groove, 12-Slide plate, 13-Second rotating gear, 14-Gear roller, 15-Directional gear, 16-Groove, 17-Rotating ring, 18-Elastic scraper, 19-Filter element, 20-Protective cover, 21-Through hole, 22-Modible cover. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The diagram shown is a structural schematic of a refining furnace filtration device for purifying molten steel, provided in one embodiment of the present invention, comprising:

[0030] Furnace body 3;

[0031] Top cover 10, the top cover 10 is set on the top of the furnace body 3, and a support plate 6 is fixedly installed on the top;

[0032] Vacuum pump 7 is fixedly installed on the top of support plate 6;

[0033] A rotary filter structure is set between the vacuum pump 7 and the top cover 10 to perform rotary filtration below the vacuum pump 7.

[0034] The rotary filter structure includes a first rotary toothed disc 8, an electric gear 9, and a protective cover 20. The protective cover 20 is fixedly installed at the bottom of the top of the support plate 6. The first rotary toothed disc 8 is slidably disposed at the bottom of the protective cover 20. Both the surface of the first rotary toothed disc 8 and the protective cover 20 are provided with through holes 21. A filter element 19 is placed inside the through holes 21 on the surface of the first rotary toothed disc 8. The electric gear 9 is disposed at the top of the top cover 10 and is connected to the side of the first rotary toothed disc 8 for transmission.

[0035] In this embodiment of the present invention, when in use, the vacuum pump 7 is started to extract the air inside the furnace body 3, and the metal powder in the air is filtered down by the filter element 19 below the vacuum pump 7, so as to avoid damage to the vacuum pump 7 by the metal powder inside the furnace body 3. After filtering for a period of time, the electric gear 9 is started to rotate the first rotating gear 8 below the protective cover 20, thereby replacing the filter element 19 in the through hole 21 below the vacuum pump 7 after filtering for a period of time with the filter element 19 in other through holes 21, so that the filter element 19 can filter the vacuum pump 7 for a long time, thereby enabling the vacuum pump 7 to evacuate the furnace body 3 for a long time.

[0036] By setting a rotating filter structure between the top cover 10 and the vacuum pump 7, the positions of the filter elements 19 at different locations can be rotated and replaced, aligning them sequentially with the vacuum pump 7. This allows the filter elements 19 in the through holes 21 below the vacuum pump 7 to be replaced with other filter elements 19 in the through holes 21 for a period of time. This enables the filter elements 19 to filter the air drawn by the vacuum pump 7 for a long time, allowing the vacuum pump 7 to evacuate the furnace body 3 for an extended period, thus reducing heat energy consumption.

[0037] likeFigure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, the top cover 10 has a groove 11 on its top, a slide plate 12 is slidably disposed inside the groove 11, and a groove 16 is provided at the inner end. A scraping structure is provided at the top of the groove 16 to clean the bottom of the filter element 19 in the upper through hole 21. A transmission structure is provided on the surface of the slide plate 12. The transmission structure is connected to the side of the first rotating toothed disc 8. The front side of the transmission structure is connected to the scraping structure.

[0038] In this embodiment of the present invention, when the first rotating toothed disk 8 rotates, it will drive the transmission structure to rotate and drive the scraping structure in the groove 16 to work, thereby cleaning the metal powder at the bottom of the filter element 19 and causing it to fall into the groove 16 for collection.

[0039] By connecting the transmission structure to the side of the first rotating toothed disc 8, the transmission structure will rotate when the first rotating toothed disc 8 is in operation. A scraping structure connected to the transmission structure is provided at the top of the groove 16. When the first rotating toothed disc 8 is working, the scraping structure can clean the metal powder that has moved to the bottom of the upper filter element 19, thereby extending the service life of the filter element 19 and reducing the number of times the filter element 19 needs to be replaced.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, the transmission structure includes a second rotating gear 13 and a steering gear 15. The steering gear 15 is movably disposed on the top of the top cover 10 and is connected to the first rotating gear 8 on its inner side. The second rotating gear 13 is movably disposed on the top of the slide plate 12 and a toothed roller 14 is fixedly installed on its top, which is connected to the steering gear 15. The right side of the second rotating gear 13 is connected to the scraping structure.

[0041] In this embodiment of the present invention, when the first rotating toothed disk 8 rotates, it will drive the steering gear 15 to rotate, which in turn drives the second rotating toothed disk 13 to rotate rapidly through the toothed roller 14, thereby causing the scraping structure to rotate accordingly.

[0042] By setting up a transmission structure, when the first rotating gear disk 8 rotates, the filter element 19 in the through hole 21 below the vacuum pump 7 is replaced by the filter element 19 in other through holes 21 after a period of time. This allows the filter element 19 to filter the vacuum pump 7 for a long time, thereby enabling the vacuum pump 7 to evacuate the furnace body 3 for a long time.

[0043] like Figure 3 and Figure 5 As shown, in a preferred embodiment of the present invention, the scraping structure includes a rotating ring 17 and an elastic scraper 18. The rotating ring 17 is slidably disposed on the top of the groove 16 and is connected to the scraping structure on the left side. The elastic scraper 18 is fixedly installed on the inner end of the rotating ring 17 and its top is in movable contact with the bottom of the filter element 19 in the upper through hole 21.

[0044] In this embodiment of the utility model, when the first rotating toothed disk 8 rotates, it will drive the steering gear 15 to rotate, and then drive the second rotating toothed disk 13 to rotate rapidly through the toothed roller 14, thereby causing the rotating ring 17 at the top of the inner groove 16 of the slide plate 12 and the elastic scraper 18 on its inner side to rotate.

[0045] By setting up a scraping structure, when the filter element 19 rotates above the groove 16 after filtering for a period of time, the elastic scraper 18 can scrape the metal powder array at the bottom of the filter element 19, thereby extending the service life of the filter element 19 and reducing the number of times the filter element 19 needs to be replaced.

[0046] like Figure 1 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, a movable cover 22 is hinged inside the through hole 21 on the outer side of the protective cover 20. The movable cover 22 is positioned corresponding to the filter element 19, and its diameter is greater than that of the filter element 19.

[0047] In this embodiment of the utility model, when in use, a movable cover 22 is hinged inside the through hole 21 on the outside of the protective cover 20, so that the through hole 21 on the inside of the protective cover 20 is always unobstructed, which facilitates air extraction. The movable cover 22 is positioned corresponding to the filter element 19, and its diameter is larger than that of the filter element 19, which facilitates the replacement of the filter element 19.

[0048] like Figure 3 and Figure 5 As shown, in a preferred embodiment of the present invention, the groove 16 is disposed below the rotation position of the through hole 21, and the diameter of the groove 16 is greater than the diameter of the filter element 19.

[0049] In this embodiment of the utility model, when in use, by setting the groove 16 below the rotation position of the through hole 21, and making the diameter of the groove 16 larger than the diameter of the filter element 19, it is convenient to clean the metal dust at the bottom of the filter element 19.

[0050] like Figure 1 and Figure 2As shown, in a preferred embodiment of the present invention, a support bracket 1 is provided on the outer side of the furnace body 3, and a support rotating ring 2 is provided at the top of the support bracket 1. The furnace body 3 is inserted into the middle of the support rotating ring 2. Electric telescopic rods 4 are symmetrically provided on the top of both sides of the support bracket 1. A top plate 5 is fixedly installed on the top of the electric telescopic rod 4. The top of the top plate 5 is fixedly connected to the side of the top cover 10.

[0051] In this embodiment of the utility model, when in use, the furnace body 3 is inserted into the middle of the support rotating ring 2, and then the support rotating ring 2 on the surface of the support bracket 1 is activated, so that the angle of the furnace body 3 can be adjusted, thereby facilitating the discharge of molten steel. Electric telescopic rods 4 are symmetrically arranged on the top of both sides of the support bracket 1, and a top plate 5 is fixedly installed on the top of the electric telescopic rods 4, so that the top of the top plate 5 is fixedly connected to the side of the top cover 10, thereby adjusting the height of the top cover 10.

[0052] The above embodiments of this utility model provide a refining furnace filtration device for purifying molten steel. When in use, the vacuum pump 7 is started to extract the air inside the furnace body 3, and the metal powder in the air is filtered down by the filter element 19 below the vacuum pump 7 and adheres to the bottom of the filter element 19, thereby avoiding damage to the vacuum pump 7 by the metal powder inside the furnace body 3.

[0053] After filtering for a period of time, the electric gear 9 is activated, causing the first rotating gear 8 under the protective cover 20 to rotate, thereby replacing the filter element 19 in the through hole 21 below the vacuum pump 7 with the filter element 19 in other through holes 21. This allows the filter element 19 to filter the vacuum pump 7 for a long time, and thus the vacuum pump 7 can evacuate the furnace body 3 for a long time.

[0054] Meanwhile, when the first rotating toothed disc 8 rotates, it drives the steering gear 15 to rotate, which in turn drives the second rotating toothed disc 13 to rotate rapidly through the toothed roller 14. This causes the rotating ring 17 at the top of the inner groove 16 of the slide plate 12 and the elastic scraper 18 on its inner side to rotate. When the filter element 19, which has been filtering for a period of time, rotates to the top of the groove 16, the elastic scraper 18 can scrape the metal powder array at the bottom of the filter element 19, thereby extending the service life of the filter element 19 and reducing the number of times the filter element 19 needs to be replaced.

[0055] When it is necessary to clean the metal powder in the groove 16 at the inner end of the slide plate 12, simply pull the slide plate 12 out through the slide groove 11, and then the metal powder in the groove 16 can be cleaned.

[0056] When the filter element 19 needs to be replaced, simply open the movable cover 22 on the surface of the protective cover 20 to expose the through hole 21 underneath, and then the filter element 19 inside can be taken out for replacement.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 refining furnace filtration device for purifying molten steel, characterized in that, include; Furnace body (3); Top cover (10), the top cover (10) is set on the top of the furnace body (3), and a support plate (6) is fixedly installed on the top. A vacuum pump (7) is fixedly mounted on the top of a support plate (6); A rotary filter structure is provided between the vacuum pump (7) and the top cover (10) to perform rotary filtration below the vacuum pump (7); The rotary filter structure includes a first rotary toothed disc (8), an electric gear (9), and a protective cover (20). The protective cover (20) is fixedly installed at the bottom of the top of the support plate (6). The first rotary toothed disc (8) is slidably disposed at the bottom of the protective cover (20). Both the surface of the first rotary toothed disc (8) and the protective cover (20) are provided with through holes (21). A filter element (19) is placed inside the through hole (21) on the surface of the first rotary toothed disc (8). The electric gear (9) is disposed at the top of the top cover (10) and is connected to the side of the first rotary toothed disc (8) for transmission.

2. The refining furnace filtration device for purifying molten steel according to claim 1, characterized in that, The top of the top cover (10) is provided with a sliding groove (11), and a sliding plate (12) is slidably arranged inside the sliding groove (11), and a groove (16) is provided at the inner end. A scraping structure is provided at the top of the groove (16) to clean the bottom of the filter element (19) in the upper through hole (21). A transmission structure is provided on the surface of the sliding plate (12), and the transmission structure is connected to the side of the first rotating toothed disc (8). The front side of the transmission structure is connected to the scraping structure.

3. A refining furnace filtration device for purifying molten steel according to claim 2, characterized in that, The transmission structure includes a second rotating toothed disc (13) and a steering gear (15). The steering gear (15) is movably disposed on the top of the top cover (10) and is connected to the first rotating toothed disc (8) on its inner side. The second rotating toothed disc (13) is movably disposed on the top of the slide plate (12) and a toothed roller (14) is fixedly installed on its top and is connected to the steering gear (15). The right side of the second rotating toothed disc (13) is connected to the scraping structure.

4. A refining furnace filtration device for purifying molten steel according to claim 2, characterized in that, The scraping structure includes a rotating ring (17) and an elastic scraper (18). The rotating ring (17) is slidably disposed on the top of the groove (16) and is connected to the scraping structure on the left side. The elastic scraper (18) is fixedly installed on the inner end of the rotating ring (17) and its top is in movable contact with the bottom of the filter element (19) in the upper through hole (21).

5. A refining furnace filtration device for purifying molten steel according to claim 1, characterized in that, The protective cover (20) has a hinged movable cover (22) inside the through hole (21) on the outside. The movable cover (22) is positioned corresponding to the filter element (19), and its diameter is greater than that of the filter element (19).

6. A refining furnace filtration device for purifying molten steel according to claim 3, characterized in that, The groove (16) is located below the rotation position of the through hole (21), and the diameter of the groove (16) is greater than the diameter of the filter element (19).

7. A refining furnace filtration device for purifying molten steel according to claim 1, characterized in that, A support bracket (1) is provided on the outside of the furnace body (3). A support rotating ring (2) is provided at the top of the support bracket (1). The furnace body (3) is inserted into the middle of the support rotating ring (2). Electric telescopic rods (4) are symmetrically provided on the top of both sides of the support bracket (1). A top plate (5) is fixedly installed on the top of the electric telescopic rod (4). The top of the top plate (5) is fixedly connected to the side of the top cover (10).

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