A dust collecting hood for a refining furnace

Abstract

The patent discloses a refining furnace dust collecting cover, which comprises a dust collecting cylinder, a placing net is fixedly installed on the inner side wall of the dust collecting cylinder, a filter cloth is arranged on the top of the placing net, a lower ring body is fixedly communicated with the top of the dust collecting cylinder, a fan is tightly matched with the top of the lower ring body, a shell top of the fan is tightly matched with an upper ring body, a horizontal pipe is fixedly communicated with the top of the upper ring body, and a screw system is arranged on the patent, so that the upper ring body can be driven to move upwards and separated from the fan by rotating the bolt, and then the fan can be disassembled, the upper ring body is directly moved upwards instead of being disassembled and removed, compared with the traditional disassembly and removal process, the disassembly time can be greatly saved, and the disassembly efficiency is improved.

Description

Technical Field

[0001] This patent relates to the field of dust collection hood technology, specifically a dust collection hood for a refining furnace. Background Technology

[0002] A refining furnace dust hood is a device installed on a refining furnace to capture fumes and harmful gases generated during the smelting process. Its purpose is to reduce emissions and protect the environment and worker health. Existing dust hoods consist of a dust collection cylinder, a fan, and piping. Because the fan requires periodic disassembly and cleaning, the current disassembly method involves removing the piping at the top of the fan before disassembling the fan itself. This disassembly (removing bolts) is divided into two parts, resulting in low efficiency. Therefore, we propose a flue gas recovery device based on cast iron pipe spraying. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this patent is to provide a flue gas recovery device for cast pipe spraying. This solution uses a screw system, which allows the upper ring to move upward and detach from the fan simply by turning the bolts, thus enabling the fan to be disassembled. In this case, the upper ring is not disassembled or removed, but moved directly upward, which greatly saves disassembly time and improves disassembly and assembly efficiency compared to the traditional disassembly and removal process.

[0004] The technical solution adopted by this patent to solve its technical problem is: a dust collection hood for a refining furnace, including a dust collection cylinder, a placement net fixedly installed on the inner side wall of the dust collection cylinder, a filter cloth provided on the top of the placement net, a lower ring body fixedly connected to the top of the dust collection cylinder, a fan tightly attached to the top of the lower ring body, an upper ring body tightly attached to the top of the fan housing, and a horizontal pipe fixedly connected to the top of the upper ring body. A first ear plate is fixedly installed on the right end of the outer side wall of the upper ring body. A threaded hole is provided in the middle of the first ear plate. A circular groove is provided on the top right side of the dust collection cylinder. A bearing is fixedly installed on the inner side wall of the circular groove. A bolt is fixedly installed on the top of the inner ring of the bearing. The side wall of the bolt is screwed to the inner side wall of the threaded hole. A second ear plate is fixedly installed on the left end of the outer side wall of the upper ring body. A sliding hole is provided in the middle of the second ear plate. A fixing rod is fixedly installed on the top left side of the dust collection cylinder. The inner side wall of the sliding hole is slidably installed on the side wall of the fixing rod.

[0005] Furthermore, the four ends of the side wall of the fixing rod are provided with wheel grooves, and the four ends of the inner side wall of the sliding hole are provided with mounting grooves. A limiting wheel is installed in the mounting groove through a rotating shaft, and the edge of the limiting wheel is rolled in the wheel groove.

[0006] Furthermore, the top of the wheel groove is in an open state.

[0007] Furthermore, sealing rings are fixedly installed at the top and bottom of the fan casing, and the top of the lower ring and the bottom of the upper ring are respectively pressed onto the two sealing rings.

[0008] Furthermore, the lower ring body has positioning grooves at both the top left and right ends, and the fan housing has positioning rods integrally formed at both the bottom left and right ends, with the positioning rods inserted into the positioning grooves.

[0009] Furthermore, the front side wall of the dust collection cylinder is provided with an installation port, and a sealing door is installed inside the installation port, the sealing door corresponding to the position where the mesh is placed.

[0010] The beneficial effects of this patent are: 1. This solution uses a screw system, which allows the upper ring to move upward and detach from the fan simply by turning the bolt. Then the fan can be disassembled. In this case, the upper ring is not disassembled or removed, but moved directly upward. Compared with the traditional disassembly and removal process, this can greatly save disassembly time and improve disassembly and assembly efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of this patent.

[0012] Figure 2 This is a cross-sectional view of the structure of this patent.

[0013] Figure 3 This is a top view of the second ear plate of this patent.

[0014] Explanation of reference numerals in the attached drawings: 1 Dust collection cylinder, 2 Placement net, 3 Filter cloth, 4 Lower ring body, 5 Fan, 6 Upper ring body, 7 Horizontal pipe, 8 First ear plate, 9 Bearing, 10 Bolt, 11 Second ear plate, 12 Fixing rod, 13 Wheel groove, 14 Mounting groove, 15 Limiting wheel, 16 Positioning groove, 17 Positioning rod, 18 Sealing door. Detailed Implementation

[0015] The present patent is further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the patent. Furthermore, it should be understood that after reading the teachings of this patent, those skilled in the art can make various alterations or modifications to this patent, and these equivalent forms also fall within the scope defined by the appended claims.

[0016] See Figure 1 , Figure 2 , Figure 3This is a schematic diagram of the structure of this patent. A dust collection hood for a refining furnace includes a dust collection cylinder 1. A placement net 2 is fixedly installed on the inner side wall of the dust collection cylinder 1. A filter cloth 3 is provided on the top of the placement net 2. A lower ring body 4 is fixedly connected to the top of the dust collection cylinder 1. A fan 5 is tightly attached to the top of the lower ring body 4. An upper ring body 6 is tightly attached to the top of the housing of the fan 5. A horizontal pipe 7 is fixedly connected to the top of the upper ring body 6. Dust collection bin 1 Material: Q235 carbon steel is selected, which has good strength and toughness, can withstand certain pressure and dust impact, and is moderately priced and easy to process.

[0017] Parameters: The diameter can be set according to actual needs, such as Φ800mm - Φ1200mm. The height is determined according to the overall design and dust collection requirements, such as 1000mm - 1500mm. The wall thickness is generally 5mm - 8mm.

[0018] Placement Net 2 Material: Made of 304 stainless steel, it has good corrosion resistance and can adapt to the environment inside the dust collection bin, preventing rust and damage.

[0019] Parameters: The mesh size is determined according to the specifications of filter cloth 3 and the size of dust particles. It is usually a square hole of 10mm×10mm-20mm×20mm, and the wire diameter is 3mm-5mm. The overall size matches the inner diameter of dust collection cylinder 1, and is slightly smaller than the inner diameter of dust collection cylinder 1 for easy placement.

[0020] Filter cloth 3 Material: High-temperature resistant and acid and alkali resistant needle-punched felt filter cloth can be selected, such as PPS (polyphenylene sulfide) needle-punched felt filter cloth, which can effectively filter high-temperature and corrosive dust generated during the smelting process.

[0021] Parameters: The filtration accuracy is selected according to the actual dust conditions, generally 5μm - 20μm, the thickness is 3mm - 5mm, and the size is the same as that of the placement net 2, covering the placement net 2.

[0022] Lower ring 4, upper ring 6 Material: Same as dust collection cylinder 1, made of Q235 carbon steel to ensure structural strength and connection stability.

[0023] Parameters: The inner diameter is the same as the inner diameter of the dust collection cylinder 1, and the outer diameter can be determined according to the installation dimensions of the fan 5, for example, it can be 20mm-50mm larger than the diameter of the fan 5 casing, and the height is 50mm-80mm.

[0024] Fan 5 Material: The fan casing is made of cast steel, and the impeller is made of wear-resistant alloy material, such as high chromium alloy, to cope with the wear of smoke and dust.

[0025] Parameters: The air volume is determined according to the size of the refining furnace and the amount of smoke and dust generated, for example, 10000m³ / h - 30000m³ / h, the air pressure is 1500Pa - 3000Pa, and the power is selected according to the air volume and air pressure, generally 5kW - 15kW.

[0026] A first ear plate 8 is fixedly installed on the right end of the outer side wall of the upper ring body 6. A threaded hole is provided in the middle of the first ear plate 8. A circular groove is provided on the right side of the top of the dust collection cylinder 1. A bearing 9 is fixedly installed on the inner side wall of the circular groove. A bolt 10 is fixedly installed on the top of the inner ring of the bearing 9. The side wall of the bolt 10 is screwed to the inner side wall of the threaded hole. A second ear plate 11 is fixedly installed on the left end of the outer side wall of the upper ring body 6. A sliding hole is provided in the middle of the second ear plate 11. A fixing rod 12 is fixedly installed on the top left side of the dust collection cylinder 1. The inner side wall of the sliding hole is slidably installed on the side wall of the fixing rod 12.

[0027] A refining furnace dust hood is a large-volume outer cover installed on the outside of a refining furnace to capture fumes and harmful gases generated during the smelting process. Its purpose is to reduce dust emissions and protect the environment and worker health. Existing dust hoods consist of a dust collection cylinder, a fan, and pipelines. Since the fan needs to be disassembled and cleaned regularly, the current disassembly method is to disassemble the pipeline on the top of the fan and then disassemble the fan itself. Disassembly (removal of bolts) is divided into two parts, resulting in low efficiency in the disassembly and assembly of the fan.

[0028] This solution uses a lead screw system, which allows the upper ring 6 to move upward and detach from the fan 5 simply by turning the bolt 10. Then the fan 5 can be disassembled. In this case, the disassembly of the upper ring 6 is not done by removing or taking off the upper ring 6, but by moving it directly upward. Compared with the traditional disassembly and removal process, this can greatly save disassembly time and improve disassembly and assembly efficiency.

[0029] Specifically, the four ends of the side wall of the fixed rod 12 are provided with wheel grooves 13, and the four ends of the inner side wall of the sliding hole are provided with mounting grooves 14. The mounting grooves 14 are equipped with limit wheels 15 through rotating shafts, and the wheel edges of the limit wheels 15 are rolled in the wheel grooves 13.

[0030] Limit wheel 15 Material: The wheel body is made of nylon, which has good wear resistance and self-lubricating properties, and the shaft is made of 304 stainless steel.

[0031] Parameters: Wheel body diameter is 20mm - 30mm, width matches the width of wheel groove 13, and shaft diameter is 8mm - 12mm.

[0032] Traditional lead screw systems mostly use sliders that slide within the guide rails, resulting in sliding limits. This leads to significant wear between components and frequent replacements. This solution, however, uses a limit wheel 15 that is rolled within the wheel groove 13 at the edge of the wheel body. This provides rolling limits, which can greatly reduce friction and wear between components and extend service life.

[0033] Specifically, the top of the wheel groove 13 is in the open state.

[0034] The top of the wheel groove 13 is in an open state, which makes it easy to install the limiting wheel 15 in the wheel groove 13.

[0035] Specifically, sealing rings are fixedly installed at the top and bottom of the casing of the fan 5, and the top of the lower ring 4 and the bottom of the upper ring 6 are respectively pressed onto the two sealing rings.

[0036] sealing ring Material: Fluororubber sealing rings are selected, which have the characteristics of high temperature resistance and chemical corrosion resistance, and can adapt to the working environment of the fan.

[0037] Parameters: The inner diameter of the sealing ring is the same as the diameter of the fan 5 housing, the outer diameter is slightly smaller than the inner diameter of the lower ring 4, and the thickness is 5mm-8mm.

[0038] The sealing ring can be made of high-temperature resistant material to enhance the sealing effect of the fan 5 during installation.

[0039] Specifically, the lower ring body 4 has positioning grooves 16 at both the top left and right ends, and the fan 5 has positioning rods 17 integrally formed at both the bottom left and right ends, with the positioning rods 17 inserted into the positioning grooves 16.

[0040] The positioning rod 17 is inserted into the positioning groove 16 to define the installation position of the fan 5 relative to the lower ring body 4.

[0041] Specifically, the front side wall of the dust collection cylinder 1 is provided with an installation port, and a sealing door 18 is installed in the installation port, which corresponds to the position where the mesh 2 is placed.

[0042] Sealed door 18 Material: The door panel is made of Q235 carbon steel, and the sealing strip is made of silicone rubber, which has good sealing performance and high temperature resistance.

[0043] Parameters: The size is determined according to the size of the installation port, and is generally slightly smaller than the installation port to ensure smooth opening and closing. The thickness of the sealing strip is 3mm - 5mm.

[0044] The internal filter cloth 3 can be replaced through the installation port.

[0045] Working principle: The left end of the horizontal tube 7 needs to be embedded in the side wall of the large outer cover of the refining furnace. The fan 5 can draw the flue gas generated during the smelting process of the refining furnace into the dust collection cylinder 1, where it is intercepted by the filter cloth. When it is necessary to clean the inside of the fan 5, simply turn the bolt 10 to move the upper ring 6 upward and separate it from the fan 5, and then the fan 5 can be disassembled and cleaned. The operation is simple and labor-saving.

[0046] It should be noted that the device structure and accompanying drawings of this patent mainly describe the principle of this patent. In terms of the technical aspects of this design principle, the setting of the device's power mechanism, power supply system and control system is not fully described. However, those skilled in the art who understand the principle of the above patent can clearly understand the specifics of its power mechanism, power supply system and control system.

[0047] This solution uses a screw system, which allows the upper ring to move upwards and detach from the fan simply by turning the bolts. This allows the fan to be disassembled. In this case, the upper ring is not removed or taken off, but moved upwards directly. Compared with the traditional disassembly and removal process, this can greatly save disassembly time and improve disassembly and assembly efficiency.

[0048] In the description of this patent, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, 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. At the same time, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., 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 elements or the interaction relationship between two elements. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0049] Although embodiments of this patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this patent, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust collection hood for a refining furnace, characterized in that: The dust collection cylinder (1) includes a dust collection cylinder (1), a placement net (2) is fixedly installed on the inner side wall of the dust collection cylinder (1), a filter cloth (3) is provided on the top of the placement net (2), a lower ring body (4) is fixedly connected to the top of the dust collection cylinder (1), a fan (5) is tightly attached to the top of the lower ring body (4), an upper ring body (6) is tightly attached to the top of the housing of the fan (5), and a horizontal pipe (7) is fixedly connected to the top of the upper ring body (6). The upper ring (6) has a first ear plate (8) fixedly installed on the right side of the outer side wall. The first ear plate (8) has a threaded hole in the middle. The dust collection cylinder (1) has a circular groove on the top right side. The inner side wall of the circular groove has a bearing (9) fixedly installed. The top of the inner ring of the bearing (9) has a bolt (10) fixedly installed. The side wall of the bolt (10) is screwed to the inner side wall of the threaded hole. A second ear plate (11) is fixedly installed on the left end of the outer side wall of the upper ring body (6). A sliding hole is provided in the middle of the second ear plate (11). A fixing rod (12) is fixedly installed on the top left side of the dust collection cylinder (1). The inner side wall of the sliding hole is slidably installed on the side wall of the fixing rod (12).

2. The dust collection hood for a refining furnace according to claim 1, characterized in that: The four ends of the side wall of the fixed rod (12) are provided with wheel grooves (13), and the four ends of the inner side wall of the sliding hole are provided with mounting grooves (14). The mounting grooves (14) are installed with a limiting wheel (15) through a rotating shaft. The wheel body edge of the limiting wheel (15) is rolled in the wheel groove (13).

3. The dust collection hood for a refining furnace according to claim 2, characterized in that: The top of the wheel groove (13) is in an open state.

4. A dust hood for a refining furnace according to claim 1, characterized in that: The top and bottom of the fan (5) housing are fixedly installed with sealing rings, and the top of the lower ring (4) and the bottom of the upper ring (6) are respectively pressed onto the two sealing rings.

5. A dust hood for a refining furnace according to claim 1, characterized in that: The lower ring body (4) has positioning grooves (16) at both the top left and right ends, and the fan (5) has positioning rods (17) integrally formed at both the bottom left and right ends of the casing. The positioning rods (17) are inserted into the positioning grooves (16).

6. A dust hood for a refining furnace according to claim 1, characterized in that: The front side wall of the dust collection cylinder (1) is provided with an installation port, and a sealing door (18) is installed in the installation port. The sealing door (18) corresponds to the position where the mesh (2) is placed.

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