A waste heat recovery device for a regenerative melting furnace for aluminum plate processing

Abstract

The utility model relates to a waste heat recovery device technical field especially relates to a kind of waste heat recovery devices of heat accumulation type melting furnace for aluminium plate processing, including smelting furnace body and waste heat recovery tank, circulating water pipe is fixedly connected in the waste heat recovery tank, hollow tube is fixedly sheathed in the outside of circulating water pipe, the inner wall of hollow tube is provided with heat preservation layer;The smelting furnace body is connected by fixed frame and the hollow tube, the inside wall of both sides of fixed frame is fixedly connected with support strip, filter screen is arranged between multiple support strips, opening is set in the side of fixed frame, the cross section of opening is concave letter shape setting, sealing block is set in the opening.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery devices, and in particular to a waste heat recovery device for a regenerative melting furnace used in aluminum plate processing. Background Technology

[0002] With the continuous development of society and the continuous progress of science and technology, the technology related to waste heat recovery devices is also constantly improving. The regenerative melting furnace for aluminum plate processing is a new type of high-efficiency and energy-saving aluminum melting furnace developed based on the aluminum smelting process. At present, a large amount of heat contained in the flue gas can be recovered and utilized through waste heat recovery components, which can effectively reduce energy waste.

[0003] The patent document with publication number "CN220250637U" discloses a regenerative melting furnace for aluminum plate processing, including a furnace body, a flue gas pipe connected to the upper end of the furnace body, a waste heat recovery tank connected to the flue gas pipe, and a recovery chamber opened in the waste heat recovery tank.

[0004] Although the aforementioned patent documents have solved the problem of inconvenience in replacing the first, second, and third filter plates after prolonged use, resulting in incomplete flue gas purification and subsequent secondary emissions, the following drawbacks still exist: the flue gas contains a large number of impurities. When these impurities are directly discharged into the recovery chamber and come into contact with the surface of the circulating water pipe for heat exchange, they will gradually accumulate on the outside of the circulating water pipe, leading to an increase in the thermal resistance of the outer surface of the circulating water pipe and a reduction in heat exchange efficiency. Utility Model Content

[0005] The purpose of this utility model is to solve the following shortcomings in the prior art: the flue gas contains a large number of impurities. When these impurities are directly discharged into the recovery chamber and come into contact with the surface of the circulating water pipe for heat exchange, they will gradually accumulate on the outside of the circulating water pipe, which will increase the heat transfer resistance on the outer surface of the circulating water pipe and reduce the heat exchange efficiency. Therefore, a waste heat recovery device for a regenerative melting furnace for aluminum plate processing is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A regenerative melting furnace waste heat recovery device for aluminum plate processing includes a furnace body and a waste heat recovery tank. A circulating water pipe is fixedly connected inside the waste heat recovery tank. A hollow pipe is fixedly sleeved on the outside of the circulating water pipe. An insulation layer is provided on the inner wall of the hollow pipe.

[0008] The furnace body is connected to the hollow tube via a fixed frame. Support bars are fixedly connected to the inner walls on both sides of the fixed frame. Filter screens are arranged between multiple support bars. An opening is provided on one side of the fixed frame. The cross-section of the opening is U-shaped. A sealing block is provided inside the opening. A locking component is provided on the sealing block.

[0009] Preferably, the locking assembly includes a sliding plate slidably mounted on one side of the sealing block, a cross plate fixedly connected to one side of the fixing frame, and the sliding plate being connected to the cross plate via a threaded rod.

[0010] Preferably, a T-shaped groove is formed on one side surface of the sealing block, and an I-shaped block is slidably connected in the T-shaped groove. The sliding plate and the I-shaped block are fixedly connected.

[0011] Preferably, the sealing block has a movable groove, and two sealing strips are slidably connected in the movable groove, with each sealing strip installed inside the opening.

[0012] Preferably, each of the sealing strips is fixedly connected to a spring, and the spring is fixedly connected to the inner wall of the moving groove.

[0013] Preferably, each of the sealing strips has a compression opening with a right-angled triangular cross-section, and compression strips are fixedly connected to both sides of the slide plate, with the end face of each compression strip fitting against the inclined surface of the corresponding compression opening.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By filtering out impurities, reducing ash and scale buildup on the outside of the circulating water pipes, and lowering the thermal resistance, the hollow tube insulation layer reduces heat loss. This dual effect improves heat exchange efficiency, fully recovers waste heat from flue gas, and saves energy.

[0016] The locking component design of the sealing block enables quick opening and closing of the fixed frame opening, facilitating regular cleaning or replacement of the filter screen, ensuring long-term stable operation of the device, and reducing maintenance difficulty. The linkage structure of the sealing strip and the extrusion strip, together with the locking of the threaded rod, ensures reliable sealing at the fixed frame opening, preventing flue gas leakage and avoiding environmental pollution and heat waste. Attached Figure Description

[0017] Figure 1 This is a front structural schematic diagram of a waste heat recovery device for a regenerative melting furnace used in aluminum plate processing, as proposed in this utility model.

[0018] Figure 2 This is a partial front view of the internal structure of the waste heat recovery tank in this utility model.

[0019] Figure 3 This is a partial three-dimensional structural diagram of the fixing frame and sealing block in this utility model;

[0020] Figure 4 This is a partial internal structural diagram of the fixing frame and sealing block in this utility model;

[0021] Figure 5This is a partial three-dimensional structural diagram of the sealing strip and sealing block in this utility model.

[0022] In the diagram: 1 Furnace body, 2 Waste heat recovery tank, 3 Circulating water pipe, 4 Fixed frame, 5 Hollow pipe, 6 Support strip, 7 Sealing strip, 8 Sealing block, 9 Extrusion strip, 10 Spring, 11 Extrusion port, 12 I-shaped block, 13 Horizontal plate, 14 Threaded rod, 15 Slide plate, 16 Filter screen, 17 Moving groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0025] Reference Figures 1-5 A regenerative melting furnace waste heat recovery device for aluminum plate processing includes a furnace body 1 and a waste heat recovery tank 2. A circulating water pipe 3 is fixedly connected inside the waste heat recovery tank 2. A hollow pipe 5 is fixedly sleeved on the outside of the circulating water pipe 3. An insulation layer is provided on the inner wall of the hollow pipe 5. The furnace body 1 is connected to the hollow pipe 5 through a fixed frame 4. The fixed frame 4 is fixedly connected to the hollow pipe 5 and the furnace body 1 and is interconnected. Support bars 6 are fixedly connected to the inner walls on both sides of the fixed frame 4. A filter screen 16 is provided between multiple support bars 6. The support bars 6 are used to support the filter screen 16. An opening is opened on one side of the fixed frame 4. The cross-section of the opening is U-shaped. A sealing block 8 is provided in the opening. A locking component is provided on the sealing block 8.

[0026] The locking assembly includes a sliding plate 15 slidably mounted on one side of the sealing block 8, a horizontal plate 13 fixedly connected to one side of the fixing frame 4, the sliding plate 15 being connected to the horizontal plate 13 via a threaded rod 14, a T-shaped groove being provided on one side surface of the sealing block 8, an I-shaped block 12 being slidably connected in the T-shaped groove, the sliding plate 15 and the I-shaped block 12 being fixedly connected, a moving groove 17 being provided on the sealing block 8, two sealing strips 7 being slidably connected in the moving groove 17, each sealing strip 7 being installed inside an opening, a spring 10 being fixedly connected to each sealing strip 7, the spring 10 being fixedly connected to the inner wall of the moving groove 17, an extrusion port 11 being provided on each sealing strip 7 with a cross-section of a right-angled triangle, and extrusion strips 9 being fixedly connected to both sides of the sliding plate 15, the end face of each extrusion strip 9 being in contact with the inclined surface of the corresponding extrusion port 11.

[0027] In the initial state, the sealing block 8 and the two sealing strips 7 seal and block the opening. When maintenance or replacement of the filter screen 16 is required, the threaded rod 14 is rotated so that the upper end of the threaded rod 14 disengages from the threaded groove on the horizontal plate 13, causing the slide plate 15 to slide down along the T-shaped slide groove. When the slide plate 15 moves, the two extrusion strips 9 will move close to the inclined surface of the extrusion port 11, thereby pushing the sealing strips 7 to move. The distance between the two sealing strips 7 decreases, the two springs 10 deform, and when the two sealing strips 7 move towards each other, they will be close to the two side surfaces of the filter screen 16 respectively, clamping the filter screen 16. Then, the sealing block 8 is pulled outward to pull the clamped filter screen 16 out of the fixed frame 4 for easy replacement of the filter screen 16.

[0028] In this invention, after the flue gas generated by the furnace body 1 enters the fixed frame 4, it first passes through the filter screen 16 on the support bar 6. Impurities in the flue gas are intercepted by the filter screen 16. After filtration, the flue gas enters the heat exchange area between the hollow tube 5 and the circulating water pipe 3. The filtered flue gas flows in the hollow tube 5 and exchanges heat with the circulating water pipe 3. The heat insulation layer on the inner wall of the hollow tube 5 reduces heat loss and improves heat exchange efficiency. The medium in the circulating water pipe 3 absorbs heat and realizes waste heat recovery.

[0029] The filter screen 16 inside the fixed frame 4 is used to pre-treat the flue gas discharged from the furnace body 1, intercepting dust, particulate matter and other impurities, preventing impurities from directly entering the heat exchange space between the hollow tube 5 and the circulating water pipe 3, reducing the problem of increased heat transfer resistance caused by impurity accumulation from the source, and ensuring stable heat exchange efficiency.

[0030] The insulation layer on the inner wall of the hollow tube 5 reduces heat loss to the environment, allowing the heat from the flue gas to be transferred to the medium inside the circulating water pipe 3 more efficiently. The nested structure of the circulating water pipe 3 and the hollow tube 5 increases the contact area between the flue gas and the water pipe. Combined with the low impurity characteristics of the filtered flue gas, it reduces the thermal resistance of the heat exchange surface due to fouling, thereby improving the overall waste heat recovery efficiency.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A regenerative melting furnace waste heat recovery device for aluminum plate processing, comprising a furnace body (1) and a waste heat recovery tank (2), characterized in that, The waste heat recovery tank (2) is fixedly connected to a circulating water pipe (3), and a hollow pipe (5) is fixedly sleeved on the outside of the circulating water pipe (3). The inner wall of the hollow pipe (5) is provided with a heat insulation layer. The furnace body (1) is connected to the hollow tube (5) via a fixed frame (4). Support bars (6) are fixedly connected to the inner walls on both sides of the fixed frame (4). A filter screen (16) is provided between the multiple support bars (6). An opening is provided on one side of the fixed frame (4). The cross-section of the opening is U-shaped. A sealing block (8) is provided inside the opening. A locking component is provided on the sealing block (8).

2. The waste heat recovery device for a regenerative melting furnace for aluminum plate processing according to claim 1, characterized in that, The locking assembly includes a sliding plate (15) slidably mounted on one side of the sealing block (8), and a horizontal plate (13) is fixedly connected to one side of the fixing frame (4). The sliding plate (15) is connected to the horizontal plate (13) via a threaded rod (14).

3. The waste heat recovery device for a regenerative melting furnace for aluminum plate processing according to claim 2, characterized in that, A T-shaped groove is provided on one side surface of the sealing block (8), and an I-shaped block (12) is slidably connected in the T-shaped groove. The sliding plate (15) and the I-shaped block (12) are fixedly connected.

4. The waste heat recovery device for a regenerative melting furnace for aluminum plate processing according to claim 2, characterized in that, The sealing block (8) has a movable groove (17) and two sealing strips (7) are slidably connected in the movable groove (17). Each sealing strip (7) is installed inside the opening.

5. The waste heat recovery device for a regenerative melting furnace for aluminum plate processing according to claim 4, characterized in that, Each of the sealing strips (7) is fixedly connected to a spring (10), and the spring (10) is fixedly connected to the inner wall of the moving groove (17).

6. The waste heat recovery device for a regenerative melting furnace for aluminum plate processing according to claim 4, characterized in that, Each of the sealing strips (7) has a compression port (11) with a right-angled triangular cross-section. Both sides of the slide plate (15) are fixedly connected with compression strips (9). The end face of each compression strip (9) is in contact with the inclined surface of the corresponding compression port (11).

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