Energy-saving smelting furnace waste heat recycling device

Abstract

The invention relates to the technical field of smelting furnace waste heat recovery, in particular to an energy-saving smelting furnace waste heat recycling device which comprises a smoke pipe and a waste heat boiler body, the exhaust end of the waste heat boiler body is connected with the air inlet end of the smoke pipe, an insertion cavity is formed in the upper end of the smoke pipe, a movable seat is installed in the insertion cavity in an inserted mode, and a filter screen is fixedly installed in the movable seat. Annular inserting grooves are formed in the two sides of the movable base, first threaded sleeves are installed on the two sides of an inner cavity of the smoke pipe in an inserted mode, the two first threaded sleeves are symmetrically distributed on the two sides of the movable base, annular inserting blocks are fixedly installed on the opposite end faces of the two first threaded sleeves correspondingly, and a worm in sliding connection with the worm gear is rotationally installed in the smoke pipe. And a spring is inserted into the periphery of the worm. According to the energy-saving smelting furnace waste heat recycling device, the first threaded sleeve is arranged, when the filter screen is mounted, the filter screen can be positioned, and when the filter screen is dismounted, the smoke pipe can be sealed.

Description

Technical Field

[0001] The present invention relates to the technical field of furnace waste heat recovery, and in particular to an energy-saving furnace waste heat recovery and utilization device. Background Art

[0002] Furnaces are crucial thermal energy equipment in industries such as metallurgy, chemical engineering, and glassmaking, generating large quantities of high-temperature flue gas during operation. To improve energy efficiency, waste heat recovery from furnace flue gas is often performed, for example, by transferring heat from the flue gas to water or air through a heat exchanger for secondary energy utilization. However, existing energy-saving furnace waste heat recovery devices still have some shortcomings in practical use.

[0003] The patent document with publication number CN215217227U in the prior art provides an energy-saving furnace waste heat recovery and utilization device, which can use a high-temperature glass wool layer to provide thermal insulation for the flue gas pipe, thereby reducing heat loss and preventing the flue gas pipe from overheating and scalding the staff. The protective cover can provide protection for the high-temperature glass wool layer to prevent damage to the high-temperature glass wool layer caused by collision or friction. The spring can act as a buffer when the protective cover is hit to prevent damage to the flue gas pipe caused by collision. The filter mesh movably connected inside the connecting part can filter dust to prevent dust from entering the interior of the waste heat boiler body through the air inlet joint. The filter mesh is inserted into the interior of the connecting part through a through groove, making filter replacement more convenient.

[0004] However, this device still has the following issues: The filter screen requires regular cleaning or replacement after long-term use. However, when the filter screen is removed, the flue pipe is left open, allowing high-temperature flue gas to escape. This not only causes heat loss but also poses a safety threat to operators. Furthermore, the open flue pipe can allow outside air to enter the system, affecting combustion efficiency within the furnace and even increasing harmful gas emissions. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose an energy-saving furnace waste heat recovery and utilization device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an energy-saving furnace waste heat recovery and utilization device, including a flue gas pipe and a waste heat boiler body, the exhaust end of the waste heat boiler body and the air inlet end of the flue gas pipe are connected to each other, and an insertion cavity is opened at the upper end of the flue gas pipe, a movable seat is installed in the insertion cavity, a filter is fixedly installed in the movable seat, and annular slots are opened on both sides of the movable seat, and first threaded sleeves are installed in both sides of the inner cavity of the flue gas pipe, and the two first threaded sleeves are symmetrically distributed on both sides of the movable seat. Annular plug-ins are fixedly installed on the facing end surfaces of the two first threaded sleeves, and adjacent annular plug-ins are plugged into the annular slots. A second threaded sleeve threadedly connected to the outer periphery of the first threaded sleeve is rotatably installed in the flue gas pipe, a worm wheel is fixedly installed on the outer periphery of the second threaded sleeve, a worm gear slidingly connected to the worm gear is rotatably installed in the flue gas pipe, and a spring is installed on the outer periphery of the worm gear.

[0007] In the above-mentioned energy-saving furnace waste heat recovery and utilization device, connecting rings are fixedly installed on both sides of the inner cavity of the flue pipe, and limiting slots are respectively provided on the back end faces of the two first threaded sleeves. Limiting rods are respectively fixedly installed on the opposite end faces of the two connecting rings, and adjacent limiting slots and limiting rods are connected to each other.

[0008] In the above-mentioned energy-saving furnace waste heat recovery device, an annular rotating cavity is opened in the flue gas pipe cavity, the second threaded sleeve is rotatably installed in the annular rotating cavity, a concave cavity is opened on the upper side of the annular rotating cavity, and the worm is rotatably installed in the concave cavity.

[0009] In the above-mentioned energy-saving furnace waste heat recovery and utilization device, a socket is opened on the outer periphery of the worm, the middle part of the spring is plugged into the socket, a positioning ring is fixedly installed in the concave cavity, a positioning block is fixedly installed on the inside of the concave cavity, and the outer end of the spring is clamped and connected to the positioning block.

[0010] In the above-mentioned energy-saving furnace waste heat recovery and utilization device, a valve is provided in the flue gas pipe, an annular rotating seat is fixedly installed on the inner wall of the movable seat, a positioning plate is fixedly installed on the inner cavity of the movable seat through a bracket, and the filter is arranged in a cylindrical shape and fixedly installed between the annular rotating seat and the positioning plate.

[0011] In the above-mentioned energy-saving furnace waste heat recovery and utilization device, a positioning tube is fixedly installed in the movable seat through a connecting tube, an external tube is fixedly installed on the upper end of the movable seat, the external tube and the positioning tube are connected to each other, a rotating tube is rotatably installed between the positioning tube and the positioning plate and is connected to the inner cavity of the positioning tube, a back-blowing hood is fixedly installed on the outer periphery of the rotating tube through a guide tube, and the back-blowing hood is in contact with the inner wall of the filter.

[0012] In the above-mentioned energy-saving furnace waste heat recovery and utilization device, an outer ring gear is fixedly installed on the periphery of the rotating tube, a fan blade is fixedly installed between the annular rotating seat and the positioning tube, a sun gear is fixedly installed on one side of the fan blade, and a planetary gear is rotatably installed on the periphery of the positioning tube through a bracket, and the planetary gear is meshed and installed between the outer ring gear and the sun gear.

[0013] Compared with existing technologies, the advantages of this energy-saving furnace waste heat recovery device are: 1. This device is equipped with a first threaded sleeve on both sides of the movable seat. Through the annular plug and the annular slot, the movable seat can be positioned when it is installed. When the movable seat and the filter are disassembled, the annular plugs on both sides fit together to achieve the effect of sealing the insertion cavity. Compared with the original device, this device can prevent the leakage of high-temperature flue gas, reduce heat loss, and achieve the effect of protecting workers.

[0014] 2. This device is equipped with a back-blowing cover that fits the inner wall of the filter, and cooperates with the guide tube, rotating tube, positioning tube and external tube. Through the change of the air pressure difference at the joint between the back-blowing cover and the filter, the dust and other impurities on the inner wall of the filter are cleaned, its filtering performance is maintained, and its service life is extended.

[0015] 3. This device is connected through the meshing of the planetary gear, the outer ring gear and the sun gear. When the moving smoke drives the fan blades to rotate, it can drive the rotating tube to slow down the rotation, which can not only reduce the setting of power equipment, but also protect the filter to avoid dust generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of the flue gas pipe and the waste heat boiler body of the present invention; Figure 2 This is a schematic diagram of the internal structure of the smoke pipe and the movable seat of the present invention; Figure 3 Schematic diagram of the internal structure of the flue gas pipe of the present invention; Figure 4 This is a schematic diagram of the internal disassembled structure of the first threaded sleeve of the present invention; Figure 5 The present invention Figure 4 A schematic diagram of the structure at center A; Figure 6 It is a schematic diagram of the internal structure of the movable seat of the present invention; Figure 7 This is a schematic diagram of the internal split structure of the movable seat of the present invention; Figure 8 The present invention Figure 7 A magnified schematic diagram of the structure at point B in the middle.

[0017] In the picture: 1. Flue gas pipe; 10. Waste heat boiler body; 11. Valve; 2. Movable seat; 20. Insertion cavity; 21. Filter screen; 22. Annular slot; 23. First threaded sleeve; 231. Connecting ring; 232. Limiting rod; 233. Limiting slot; 24. Annular insert; 25. Second threaded sleeve; 250. Annular rotating cavity; 26. Worm gear; 27. Worm; 270. Concave cavity; 28. Spring; 281. Insertion hole; 282. Positioning ring; 283. Positioning block; 3. Positioning plate; 31. Annular rotating seat; 32. Positioning tube; 33. External tube; 34. Rotating tube; 35. Backflush cover; 36. Conduit; 4. Fan blades; 41. Sun gear; 42. Planetary gears; 43. Outer ring gear. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0020] Reference Figures 1-8 , an energy-saving furnace waste heat recovery and utilization device, includes a flue gas pipe 1 and a waste heat boiler body 10, the exhaust end of the waste heat boiler body 10 and the air inlet end of the flue gas pipe 1 are connected to each other, an insertion cavity 20 is opened at the upper end of the flue gas pipe 1, a movable seat 2 is installed in the insertion cavity 20, a filter screen 21 is fixedly installed in the movable seat 2, annular slots 22 are opened on both sides of the movable seat 2, first threaded sleeves 23 are installed in both sides of the inner cavity of the flue gas pipe 1, two first threaded sleeves 23 are symmetrically distributed on both sides of the movable seat 2, annular plug blocks 24 are fixedly installed on the facing end surfaces of the two first threaded sleeves 23, and adjacent annular plug blocks 24 are plugged into the annular slots 22 with each other, a second threaded sleeve 25 threadedly connected to the outer periphery of the first threaded sleeve 23 is rotatably installed in the flue gas pipe 1, a worm gear 26 is fixedly installed on the outer periphery of the second threaded sleeve 25, a worm 27 slidingly connected to the worm gear 26 is rotatably installed in the flue gas pipe 1, and a spring 28 is installed on the outer periphery of the worm 27.

[0021] The specific working principle and usage method of the present invention are explained in detail below: when the filter 21 needs to be disassembled, the worm 27 is rotated on the upper side of the outer periphery of the flue pipe 1. Through the sliding connection between the worm 27 and the worm wheel 26 and the threaded connection between the second threaded sleeve 25 and the first threaded sleeve 23, the rotating worm 27 drives the first threaded sleeve 23 to move, so that the annular plug 24 and the annular slot 22 are separated from each other. Then, in the insertion cavity 20, the movable seat 2 is taken out upward to complete the disassembly of the filter 21. Subsequently, the worm 27 is loosened, and under the action of the spring 28 restoring the deformation, the worm 27 is driven to rotate in the opposite direction, thereby driving the first threaded sleeves 23 on both sides to move toward each other, so that the annular plugs 24 on both sides fit together, thereby achieving the effect of sealing the insertion cavity 20. Conversely, the movable seat 2 and the filter 21 can be installed.

[0022] Among them, connecting rings 231 are fixedly installed on both sides of the inner cavity of the flue pipe 1, and the two first threaded sleeves 23 are respectively provided with limiting slots 233 on the back end faces, and the two connecting rings 231 are respectively fixedly installed with limiting rods 232 on the facing end faces, and adjacent limiting slots 233 and limiting rods 232 are plugged into each other; an annular rotating cavity 250 is provided in the inner cavity of the flue pipe 1, and the second threaded sleeve 25 is rotatably installed in the annular rotating cavity 250, and a concave cavity 270 is provided on the upper side of the annular rotating cavity 250, and the worm 27 is rotatably installed in the concave cavity 270; a socket 281 is provided on the periphery of the worm 27, and the middle part of the spring 28 is plugged into the socket 281, a positioning ring 282 is fixedly installed in the concave cavity 270, and a positioning block 283 is fixedly installed on the inner side of the concave cavity 270, and the outer end of the spring 28 is clamped and connected with the positioning block 283.

[0023] Through the plug-in connection between the limiting plug rod 232 and the limiting slot 233, the movement direction of the first threaded sleeve 23 can be limited in the flue pipe 1, so that the rotating second threaded sleeve 25 can drive the first threaded sleeve 23 to move through the threaded connection between it and the first threaded sleeve 23.

[0024] An annular rotating chamber 250 is provided to provide a movement space for the second threaded sleeve 25 and to limit the movement direction of the second threaded sleeve 25; A concave cavity 270 is provided to provide space for the worm 27 to move and to limit the direction of movement of the worm 27. A positioning block 283 and a socket 281 are provided to install and position the spring 28. When the worm 27 is actively rotated, the spring 28 can be deformed. When the worm 27 is released, the spring 28 that recovers the deformation can drive the worm 27 to rotate in the opposite direction.

[0025] In addition, a valve 11 is provided in the flue gas pipe 1, an annular rotating seat 31 is fixedly installed on the inner wall of the movable seat 2, a positioning plate 3 is fixedly installed on the inner cavity of the movable seat 2 through a bracket, the filter screen 21 is cylindrical, and the filter screen 21 is fixedly installed between the annular rotating seat 31 and the positioning plate 3; a positioning pipe 32 is fixedly installed in the movable seat 2 through a connecting pipe, an external pipe 33 is fixedly installed on the upper end of the movable seat 2, the external pipe 33 is connected to the positioning pipe 32, and a pipe rotatably installed between the positioning pipe 32 and the positioning plate 3 The inner cavities of the rotating tubes 32 are interconnected, and a back-blowing cover 35 is fixedly installed on the periphery of the rotating tubes 34 through a guide tube 36. The back-blowing cover 35 fits together with the inner wall of the filter screen 21; an outer gear ring 43 is fixedly installed on the periphery of the rotating tube 34, a fan blade 4 is fixedly installed between the annular rotating seat 31 and the positioning tube 32, a sun gear 41 is fixedly installed on one side of the fan blade 4, and a planetary gear 42 is rotatably installed on the periphery of the positioning tube 32 through a bracket, and the planetary gear 42 is meshed and installed between the outer gear ring 43 and the sun gear 41.

[0026] When it is necessary to recover impurities such as dust on the inner wall of the filter 21, the valve 11 is closed and the external pipe 33 is connected to the external impurity recovery equipment. The flue gas moving inside the flue pipe 1 drives the fan blade 4 to rotate, and through the meshing connection between the planetary gear 42, the outer ring gear 43 and the sun gear 41, drives the back-blowing cover 35 to slow down the rotation on the inner wall of the filter 21. The air pressure difference at the joint between the back-blowing cover 35 and the filter 21 is reversed, and the dust and other impurities on the surface of the filter 21 can be pushed into the back-blowing cover 35. Then, through the conduit 36, the rotating tube 34, the positioning tube 32 and the external pipe 33, the dust and other impurities can be led to the external impurity recovery equipment, thereby achieving the effect of recovering dust and other impurities.

[0027] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0028] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An energy-saving furnace waste heat recovery and utilization device, comprising a flue gas pipe and a waste heat boiler body, characterized in that: The exhaust end of the waste heat boiler body and the air inlet end of the flue gas pipe are connected to each other, and an insertion cavity is opened at the upper end of the flue gas pipe, in which a movable seat is installed, and a filter is fixedly installed in the movable seat, and annular slots are opened on both sides of the movable seat, and first threaded sleeves are installed on both sides of the inner cavity of the flue gas pipe, and the two first threaded sleeves are symmetrically distributed on both sides of the movable seat, and annular plug-ins are fixedly installed on the facing end surfaces of the two first threaded sleeves, and adjacent annular plug-ins are plugged into the annular slots. A second threaded sleeve threadedly connected to the outer periphery of the first threaded sleeve is rotatably installed in the flue gas pipe, and a worm wheel is fixedly installed on the outer periphery of the second threaded sleeve. A worm gear slidingly connected to the worm gear is rotatably installed in the flue gas pipe, and a spring is installed on the outer periphery of the worm gear.

2. The energy-saving furnace waste heat recovery device according to claim 1, characterized in that: Connecting rings are fixedly installed on both sides of the flue gas pipe cavity, and limiting slots are respectively provided on the back end faces of the two first threaded sleeves. Limiting rods are fixedly installed on the facing end faces of the two connecting rings, and adjacent limiting slots and limiting rods are plugged into each other.

3. The energy-saving furnace waste heat recovery device according to claim 2, characterized in that: The flue gas pipe has an inner cavity with an annular rotating cavity, the second threaded sleeve is rotatably installed in the annular rotating cavity, a concave cavity is provided on the upper side of the annular rotating cavity, and the worm is rotatably installed in the concave cavity.

4. The energy-saving furnace waste heat recovery device according to claim 3 is characterized in that: The outer periphery of the worm is provided with an inserting hole, the middle part of the spring is plug-connected with the inserting hole, a positioning ring is fixedly installed in the concave cavity, a positioning block is fixedly installed inside the concave cavity, and the outer end of the spring is plug-connected with the positioning block.

5. The energy-saving furnace waste heat recovery device according to claim 1 is characterized in that: A valve is provided in the flue gas pipe, an annular rotating seat is fixedly installed on the inner wall of the movable seat, a positioning plate is fixedly installed in the inner cavity of the movable seat through a bracket, and the filter is cylindrical and fixedly installed between the annular rotating seat and the positioning plate.

6. The energy-saving furnace waste heat recovery device according to claim 5, characterized in that: A positioning tube is fixedly installed in the movable seat through a connecting tube, an external tube is fixedly installed on the upper end of the movable seat, the external tube and the positioning tube are communicated with each other, a rotating tube is rotatably installed between the positioning tube and the positioning plate and is communicated with the inner cavity of the positioning tube, a back-blowing hood is fixedly installed on the periphery of the rotating tube through a conduit, and the back-blowing hood fits against the inner wall of the filter.

7. The energy-saving furnace waste heat recovery device according to claim 6, characterized in that: An outer gear ring is fixedly installed on the periphery of the rotating tube, a fan blade is fixedly installed between the annular rotating seat and the positioning tube, a sun gear is fixedly installed on one side of the fan blade, and a planetary gear is rotatably installed on the periphery of the positioning tube through a bracket, and the planetary gear is meshed and installed between the outer gear ring and the sun gear.

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