Movable dust collecting hood

Abstract

The utility model belongs to the technical field of auxiliary equipment of melting and casting, specifically discloses a movable dust collecting hood, hollow cone platform structure cover body is provided with inner lining heat preservation rock wool in cover body inner wall, the narrow mouth end smoke outlet of cover body passes through the connecting pipe and is connected with dust collecting box air inlet pipe swing butt joint, dust collecting box is used for collecting particulate matter in smoke dust, dust collecting box air outlet passes through waste heat collecting pipe and is connected with waste heat utilization equipment, the bottom of longitudinal beam below wide mouth end of cover body is respectively connected with corresponding base swing, under the action of driving mechanism, cover body can move along the axial front and back of base, when working, cover body can be completely covered in ladle above, concentrates and extracts the smoke dust produced in the cooling process of smelting molten liquid and receives the heat, makes the frit in the preliminary cooling process can complete the cooling under the gentle cooling curve, improves the product quality and can collect the excessive smoke dust and heat simultaneously.

Description

Technical Field

[0001] This utility model belongs to the technical field of casting auxiliary equipment, specifically disclosing a movable dust collection hood. Background Technology

[0002] In the smelting and casting workshop, the molten metal generates a large amount of smoke and releases a significant amount of heat during the cooling process. This is typically achieved through exhaust ducts within the plant. However, this method still leaves a substantial amount of smoke floating in the working environment, and the released heat keeps the workshop temperature consistently high, resulting in a harsh working environment. The smoke contains SiO2 dust and metal oxides (such as Al2O3 and Fe2O3), and long-term inhalation can lead to pneumoconiosis (such as silicosis) and chronic bronchitis. The high-temperature smoke may also contain toxic gases such as CO, SO2, and NOx, which can cause acute poisoning or chronic respiratory damage. Furthermore, unburned carbon powder or combustible gases in the smoke can form explosive mixtures in confined spaces, posing a safety hazard. Additionally, slow cooling of the molten metal can cause coarsening of the corundum crystals, reducing the mechanical strength of the product. Inconsistent cooling rates can easily lead to cracking or internal micro-cracks in the molten metal, affecting the yield of subsequent processing. Summary of the Invention

[0003] To address the problems in the background art, this utility model discloses a movable dust collection hood, which is installed above the ladle and can move relative to the ladle, so that the molten ingot can complete cooling under a gentle cooling curve during the initial cooling process, thereby improving product quality while collecting excess smoke and heat.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A movable dust collection hood includes a hood body, which is a hollow frustoconical structure. The inner wall of the hood body is lined with insulating rock wool. The smoke outlet at the narrow end of the hood body is movably connected to the air inlet pipe of the dust collection box via a connecting pipe. The dust collection box is used to collect particulate matter in the smoke and dust. The air outlet of the dust collection box is connected to a waste heat utilization device via a waste heat collection pipe. Two longitudinal beams are respectively arranged vertically and vertically at intervals on both sides of the wide end of the hood body. Several vertically arranged columns are arranged between the longitudinal beams. The bottom of the lower longitudinal beams is movably connected to the corresponding bases. The bases extend along the axial direction of the ladle, and the gaps between the bases are large enough to accommodate the ladle. Under the action of a driving mechanism, the hood body can move back and forth along the axial direction of the bases. During operation, the hood body can completely cover the ladle.

[0005] Furthermore, the movable dust collection hood is equipped with an electric flap valve at one end of the connecting pipe near the air inlet pipe of the dust collection box, and the electric flap valve can open and close the connecting pipe.

[0006] Furthermore, the movable dust collection hood has a concave-convex joint structure at the interface between the connecting pipe and the air inlet pipe of the dust collection box.

[0007] Furthermore, the movable dust collection hood and dust collection box are fixedly installed on the ground outside the base by a bracket.

[0008] Furthermore, the movable dust collection hood has a drive mechanism including a motor, a reducer, and track wheels. Several track wheels are respectively provided at the bottom of the lower longitudinal beam. The reducer and motor are fixedly mounted on the lower longitudinal beam. The output shaft of the reducer is connected to the corresponding track wheel for transmission. Guide rails matching the track wheels are respectively provided on the top of the base.

[0009] Furthermore, in the movable dust collection hood, the length of the longitudinal beam is not less than the axial length of the steel ladle, and the lower end of the column is lower than the height of the upper edge of the steel ladle.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This utility model relates to a movable dust collection hood, comprising a hollow frustum-shaped hood body with an inner lining of insulating rock wool on the inner wall. The smoke outlet at the narrow end of the hood body is movably connected to the air inlet pipe of the dust collection box via a connecting pipe. The dust collection box is used to collect particulate matter in the smoke and dust. The air outlet of the dust collection box is connected to a waste heat utilization device via a waste heat collection pipe. The bottom of the longitudinal beams at the wide end of the hood body is movably connected to corresponding bases. Under the action of the driving mechanism, the hood body can move back and forth along the axial direction of the base. During operation, the hood body can completely cover the ladle, concentrating the extraction of smoke and dust generated during the cooling process of the smelting solution and collecting heat. This allows the molten block to complete cooling under a gentle cooling curve during the initial cooling process, improving product quality while collecting excess smoke and heat. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of the movable dust collection hood of this utility model; Figure 2 This is a side view of the movable dust collection hood of this utility model. Figure 3 This is a front view structural diagram of the movable dust collection hood in working state of this utility model; Figure 4 This is a side view of the movable dust collection hood of this utility model in the state of being away from the workstation. Figure 5 This is a cross-sectional structural diagram of the interface in this utility model; In the above diagram: 1-Base; 2-Guide rail; 3-Rail wheel; 4-Column; 5-Crossbeam; 6-Insulating rock wool lining; 7-Sloping roof structure; 8-Smoke outlet; 9-Connecting pipe; 10-Electric flap valve; 11-Matching interface; 11.1-Left interface; 11.2-Right interface; 12-Waste heat collection pipe; 13-Dust collection box; 14-Support; 15-Longitudinal beam; 16-Steel ladle. Detailed Implementation

[0012] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0013] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0015] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0016] Combined with appendix Figure 1-4This invention details a movable dust collection hood, comprising a hood body that is a hollow frustoconical structure. The inner wall of the hood is lined with insulating rock wool 6, which provides thermal insulation, enabling the movable dust collection hood to operate continuously in high-temperature environments. The smoke outlet 8 at the narrow end of the hood body is connected to the air inlet pipe of the dust collection box 13 via a connecting pipe 9. The connecting pipe 9 is fixedly connected to the sloping top structure 7 via a support rod below it. An electric flap valve 10 is installed at one end of the connecting pipe 9 near the air inlet pipe of the dust collection box 13. The connecting pipe 9 can be opened and closed. When the dust collection hood moves away from the ladle 16, the connecting pipe 9 automatically separates from the air inlet pipe of the dust collection box 13, and the electric flap valve 10 automatically closes. When the dust collection hood is placed above the ladle 16, the connecting pipe 9 automatically connects with the air inlet pipe of the dust collection box 13, and the electric flap valve 10 automatically starts. The dust collection box 13 is used to collect particulate matter in the smoke and dust. The air outlet of the dust collection box 13 is connected to the waste heat utilization equipment through the waste heat collection pipe 12. The dust collection box and the waste heat utilization equipment adopt existing technology. Here, the dust collection box and the waste heat utilization equipment are described in detail. The body structure is not described in detail. Between the narrow and wide ends of the hood, several downward-sloping top structures 7 are provided. The upper end of each sloped top structure 7 is fixedly connected to the smoke outlet 8, and the lower end is fixedly connected to a horizontal beam 5 or a longitudinal beam 15, facilitating heat and dust collection. A rectangular frame is provided at the wide end of the hood, comprising two sets of vertically connected horizontal beams 5 and longitudinal beams 15. Lower longitudinal beams are spaced vertically below the longitudinal beams 15 at the wide end of the hood. Several vertically arranged columns 4 are provided between the longitudinal beams 15 and the lower longitudinal beams at the wide end of the hood. The upper ends of the columns 4 are fixedly connected to the wide-mouth end longitudinal beams 15 of the hood, and the lower ends of the columns 4 are fixedly connected to the lower longitudinal beams. The bottom of the lower longitudinal beams are movably connected to the corresponding bases 1. The bases 1 extend along the axial direction of the steel ladle 16, and the gap between the bases 1 can accommodate the steel ladle 16. Under the action of the driving mechanism, the hood can move back and forth along the axial direction of the bases 1. It should be noted that the movable dust collection hood of this utility model needs to be controlled by a control system when it is working. The control system adopts the existing technology, so the structure of the control system will not be described in detail.

[0017] As an optional design, the movable dust collection hood is preferably designed with a mating concave-convex joint structure at the interface 11 between the connecting pipe 9 and the air inlet pipe of the dust collection box 13, such as... Figure 5 As shown, interface 11 includes a left interface 11.1 and a right interface 11.2. The left interface 11.1 is fixedly connected to the air inlet pipe of the dust collection box 13, and the right interface 11.2 is fixedly connected to the connecting pipe 9. Both the left interface 11.1 and the right interface 11.2 are made of hard and elastic material, which facilitates the automatic docking and separation of the connecting pipe 9 and the air inlet pipe of the dust collection box 13.

[0018] As an optional design, the movable dust collection hood is preferred, and the dust collection box 13 is fixedly installed on the ground outside the base 1 by the bracket 14.

[0019] As an optional design, the movable dust collection hood is preferred. The driving mechanism includes a motor, a reducer, and track wheels 3. Several track wheels 3 are respectively provided at the bottom of the lower longitudinal beam. The reducer and the motor are fixedly installed on the lower longitudinal beam. The output shaft of the reducer is connected to the corresponding track wheel 3 for transmission. Guide rails 2 that are matched with the track wheels 3 are respectively provided on the top of the base 1. The motor and the reducer drive the track wheels 3 to move back and forth along the guide rails.

[0020] As an optional design, the movable dust collection hood is preferred, wherein the length of the longitudinal beam is not less than the axial length of the ladle 16, and the lower end of the column 4 is lower than the height of the upper edge of the ladle 16, so that the hood can completely cover the ladle during operation, extracting the smoke and dust generated during the cooling process of the smelting solution and collecting heat.

[0021] The working process of this utility model is as follows: When the molten liquid inside the ladle 16 needs cooling, the drive mechanism starts, causing the cover to move axially along the base 1 until it completely covers the ladle 16 and then stops. The connecting pipe 9 automatically connects to the air inlet pipe of the dust collection box 13, the electric flap valve 10 automatically starts, and the fan of the dust collection box 13 starts synchronously. The dust collection box 13 collects particulate matter from the smoke and dust generated during the cooling process of the molten liquid inside the ladle 16. The filtered hot air sequentially enters the waste heat utilization equipment through the air outlet of the dust collection box 13 and the waste heat collection pipe 12, ensuring that the heat released during the cooling process is fully utilized. When the molten liquid needs to be cooled and molten blocks need to be removed, the drive mechanism... The system is activated, causing the hood to move in the opposite direction along the base 1, moving it away from the ladle 16. Simultaneously, the connecting pipe 9 and the air inlet pipe of the dust collection box 13 automatically separate, and the electric flap valve 10 and the fan of the dust collection box 13 automatically shut off. After the hood is completely away from the ladle 16, it stops moving, facilitating the lifting of the molten ingot. This utility model of a movable dust collection hood solves the problem of dust collection and removal during the production process when it is necessary to lift the molten ingot. It enables dust removal and heat collection at every stage of the production process, allowing the molten ingot to complete cooling under a gentle cooling curve during the initial cooling process. This improves product quality while collecting excess smoke and heat.

[0022] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A movable dust collection hood, characterized in that: it includes a hood body, which is a hollow frustoconical structure, with an inner lining of insulating rock wool on the inner wall of the hood body; the smoke outlet at the narrow end of the hood body is movably connected to the air inlet pipe of the dust collection box via a connecting pipe; the dust collection box is used to collect particulate matter in the smoke and dust; the air outlet of the dust collection box is connected to a waste heat utilization device via a waste heat collection pipe; two longitudinal beams are respectively arranged vertically at intervals on both sides below the wide end of the hood body; several vertically arranged columns are arranged between the longitudinal beams; the bottom of the lower longitudinal beams are respectively movably connected to corresponding bases; the bases extend along the axial direction of the ladle; the gaps between the bases are large enough to accommodate the ladle; under the action of a driving mechanism, the hood body can move back and forth along the axial direction of the bases; during operation, the hood body can completely cover the ladle.

2. The movable dust collection hood according to claim 1, characterized in that: An electric flap valve is installed at one end of the connecting pipe near the dust collection box air inlet pipe. The electric flap valve can open and close the connecting pipe.

3. The movable dust collection hood according to claim 1 or 2, characterized in that: The interface between the connecting pipe and the dust collection box air inlet pipe has a matching concave-convex joint structure.

4. The movable dust collection hood according to claim 3, characterized in that: The dust collection box is fixedly installed on the ground outside the base by a bracket.

5. The movable dust collection hood according to claim 3, characterized in that: The drive mechanism includes a motor, a reducer, and track wheels. Several track wheels are respectively installed at the bottom of the lower longitudinal beam. The reducer and motor are fixedly installed on the lower longitudinal beam. The output shaft of the reducer is connected to the corresponding track wheel. Guide rails matching the track wheels are respectively installed on the top of the base.

6. The movable dust collection hood according to claim 3, characterized in that: The length of the longitudinal beam is not less than the axial length of the ladle, and the lower end of the column is lower than the height of the upper edge of the ladle.

Images