Zinc alloy smelting waste heat recovery device

Abstract

The invention belongs to the technical field of smelting furnace waste heat recovery, and particularly relates to a zinc alloy smelting waste heat recovery device which comprises a smelting furnace and a heat gathering arc cover, flange plates are fixedly installed on the outer wall of the smelting furnace and the outer wall of the heat gathering arc cover, the two flange plates are connected through bolts and nuts, and a ring box is installed at the top of the heat gathering arc cover. A residue filtering cavity pipe is fixedly mounted at the top of the annular box, a water inlet end and a water outlet end are arranged on the top and the outer wall of the residue filtering cavity pipe, and an ash scraping assembly is arranged in the annular box; when an annular plate rotates, the annular plate drives a scraping box to rotate on the outer wall of a shaft rod through an ash containing cavity and an ash sliding pipe, when the scraping box rotates, an ash scraping opening in one side of the top of the scraping box scrapes the bottom of a residue filtering cavity pipe, and therefore smoke residues attached to the bottoms of the residue filtering cavity pipe and an air dispersing ring are scraped into the scraping box; and finally, smoke dust residues enter an ash containing cavity through an ash sliding pipe to be collected, and therefore recoverable substances in the smoke dust are recovered.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste heat recovery of smelting furnaces, and specifically relates to a waste heat recovery device for zinc alloy smelting. Background Art

[0002] Zinc alloy is an alloy composed of zinc as the base and other elements added. It has wide applications in fields such as architectural hardware, furniture hardware, and bathroom hardware, such as door locks, hinges, handles, faucets, etc. Zinc alloy can obtain various beautiful appearance effects through surface treatment processes such as electroplating, polishing, and painting to meet different decoration requirements. At the same time, its corrosion resistance can ensure that the hardware products are not prone to rusting and damage during long-term use.

[0003] Zinc alloy smelting is a process of heating zinc and other alloy elements to a certain temperature to melt and uniformly mix them. Common ones include resistance furnaces, fuel oil furnaces, and gas furnaces. The resistance furnace has precise temperature control and a clean operation environment, but the heating speed is relatively slow; the fuel oil furnace and gas furnace have a fast heating speed and high production efficiency, but attention needs to be paid to the maintenance of the combustion system and the treatment of exhaust gas emissions.

[0004] Currently, in the prior art, when using the waste heat generated during zinc alloy smelting to heat domestic water, since zinc alloy will generate a certain amount of soot during smelting, these soot will gradually deposit on the heat transfer surface at the bottom of the cavity tube, forming a heat insulation layer, increasing the thermal resistance, hindering the transfer of heat, reducing the heating efficiency of the waste heat to the water, affecting the heating effect of domestic water and also being relatively unsightly.

[0005] Therefore, the present invention provides a waste heat recovery device for zinc alloy smelting. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A waste heat recovery device for zinc alloy smelting according to the present invention includes a smelting furnace and a heat-gathering arc cover. Flange plates are fixedly installed on the outer walls of the smelting furnace and the heat-gathering arc cover, and the two flange plates are connected by bolts and nuts. A ring box is installed on the top of the heat-gathering arc cover, a slag-filtering cavity tube is fixedly installed on the top of the ring box, a heat pipe is arranged on the top of the slag-filtering cavity tube, a water pipe is arranged inside the heat pipe, and a dust-scraping component is arranged inside the ring box. The dust-scraping component includes a dust-scraping port, and the dust-scraping component is used to drive the dust-scraping port to scrape the bottom of the slag-filtering cavity tube; When the smelting furnace 1 is performing smelting operations, the waste heat dissipated in the smelting furnace 1 enters the annular box 4 through the heat-collecting arc cover 3. When the heat flow enters the annular box 4, the heat flow flows along the inner wall of the annular box 4 to the slag cavity tube 2. When the heat flow flows into the slag cavity tube, the scraping assembly drives the scraping port 902 to scrape the bottom of the slag cavity tube 2 to prevent the smoke in the heat from contacting and depositing on the bottom of the slag cavity tube 2 when the heat flow contacts the bottom of the slag cavity tube 2, forming an insulation layer, affecting the contact between the heat flow and the bottom of the slag cavity tube 2, reducing the heating efficiency of the heat flow on the water, and being not conducive to the recovery of the waste heat generated during the smelting operation of the smelting furnace 1. By setting the scraping assembly, it is possible to ensure that the heat flow stably heats the slag cavity tube 2, which is more conducive to the recovery of the waste heat dissipated during the operation in the smelting furnace 1.

[0008] Preferably, a ring plate is fixedly installed on the inner wall of the ring box, and a plurality of bevels are opened on the inner wall of the ring plate, which are set at an inclined angle. A plurality of arc blocks are fixedly installed on the top of the ring plate. When waste heat is generated during the smelting operation of the smelting furnace 1, the heat flow enters the ring box 4 along the bevel 501 and finally dissipates at the bottom of the filter slag cavity tube 2, thereby providing a path for the heat flow to enter the ring box 4. The arc block 12 is provided to avoid the heat flow from dissipating at the bottom of the diffuser ring 10 when the heat is dissipating upward, so that the heat flow can better impact the bottom of the filter slag cavity tube 2 when dissipating upward, thereby limiting the flow direction of the heat flow.

[0009] Preferably, an electric guide rail is fixedly installed on the outer wall of the ring box, and a plurality of electric sliders are slidably connected inside the electric guide rail. A heat insulating member is fixedly installed between the plurality of electric sliders. The inner wall of the heat insulating member is slidably connected to the outer wall of the ring box, and one end of the plurality of electric sliders is fixedly connected to the outer wall of the ring plate. When it is necessary to scrape the bottom of the filter residue cavity tube 2, the electric slider 801 is driven to slide in an annular manner in the electric guide rail 8. When the electric slider 801 slides, the ring plate 5 is driven to rotate. When the heat flow enters the ring box 4 through the oblique mouth 501, the heat flow rotates and dissipates to the bottom of the filter residue cavity tube 2 in conjunction with the rotation of the ring plate 5, and the heat is transferred over a larger range. The temperature distribution of the area involved in the heat flow is more uniform. The temperature difference of the local high temperature or low temperature areas that may have existed originally will gradually decrease under the action of the rotation and blowing of the heat flow, so that the heat flow can contact various parts of the bottom of the filter residue cavity tube 2, increasing the contact area between the heat flow and the bottom of the filter residue cavity tube 2, which is more conducive to the heat flow to heat the domestic water in the filter residue cavity tube 2. At the same time, the rotation and blowing of the ring plate 5 will increase the contact area and relative speed between the heat flow and the surrounding fluid, thereby promoting the heat conduction and heat convection process, accelerating the heat transfer, and allowing the heat of the heat flow to be dissipated to the surrounding environment more quickly, thereby increasing the flow rate of the heat flow.

[0010] Preferably, a gas-dispersing ring is fixedly installed at the top of the inner wall of the annular box. The inner wall of the gas-dispersing ring is fixedly connected to the outer wall of the slag-filtering cavity tube. The tops of multiple arc-shaped blocks are all located below the inner side of the gas-dispersing ring. During operation, since the high-temperature flue gas has a certain corrosiveness and stays in the waste heat recovery equipment for a long time, it will corrode components such as the pipelines and heat exchangers of the equipment, shortening the service life of the equipment. At the same time, the accumulation of flue gas may also cause the pressure inside the equipment to rise, exceeding the bearing range of the equipment and triggering safety accidents such as explosions. Discharging the flue gas helps to maintain the pressure stability inside the equipment and protect the safety of the equipment. Therefore, by setting a gas-dispersing ring at the top of the annular box, when the soot contacts the top of the slag-filtering cavity tube, the heat in the soot impacts the bottom of the slag-filtering cavity tube. When the heat flow impact is completed, the soot will leak out from the gas-dispersing ring, reducing the content of soot in the annular box and protecting the service life of the internal parts of the equipment. It serves as a path for the soot to leak out. By placing the tops of multiple arc-shaped blocks 12 below the inner side of the gas-dispersing ring, when the heat flows, it can flow along the inner surface of the arc-shaped blocks 12 towards the bottom of the slag-filtering cavity tube 2, preventing the heat from directly impacting the gas-dispersing ring 10, causing heat loss and also protecting the gas-dispersing ring 10.

[0011] Preferably, multiple arc-shaped blocks are fixedly installed between multiple first heat-dissipating plates and second heat-dissipating plates. The tops of multiple arc-shaped blocks are all located below the inner side of the gas-dispersing ring. When the ring plate drives the heat to dissipate, the heat flow will be transmitted and dissipated upward between the first heat-dissipating plate and the second heat-dissipating plate. The arc-shaped blocks are provided to prevent the heat flow from dissipating at the bottom of the gas-dispersing ring when the heat dissipates upward, so that when the heat dissipates upward, it can better impact the bottom of the slag-filtering cavity tube, playing a role in limiting the flow direction of the heat flow.

[0012] Preferably, the ash scraping assembly further includes a shaft rod. The top of the shaft rod is fixedly connected to the bottom of the filter residue chamber tube, and the bottom end of the shaft rod is rotatably connected to the bottom of the ring plate. A plurality of scraping boxes are rotatably connected to the outer wall of the shaft rod. The internal structures of the plurality of scraping boxes are the same. An ash scraping opening is formed on one side of the scraping box, and a dust limiting plate is fixedly installed on the other side of the scraping box. A sliding ash pipe is fixedly installed on one side of the bottom of each of the plurality of scraping boxes, and a plurality of ash placing chambers are fixedly installed at the bottom of each of the plurality of sliding ash pipes. The plurality of ash placing chambers are fixedly installed on the top of the ring plate. The top of the ash scraping opening is slidably connected to a plurality of smoke filtering holes at the bottom of the filter residue chamber tube. When the ring plate rotates, the ring plate drives the scraping box to rotate on the outer wall of the shaft rod through the ash placing chamber and the sliding ash pipe. When the scraping box rotates, the ash scraping opening on one side of the top of the scraping box scrapes the bottom of the filter residue chamber tube, so as to scrape off the soot residues adhering to the bottom of the filter residue chamber tube and the air dispersion ring and enter the scraping box. Finally, the soot residues enter the ash placing chamber through the sliding ash pipe for collection, so as to recycle the recyclable substances in the soot, play a role in scraping and collecting the soot residues, and the setting of the dust limiting plate is to increase the slag receiving range and reduce the probability that the soot residues float without falling into the scraping box due to excessive looseness when being scraped.

[0013] Preferably, a disc is fixedly installed at the top of the shaft rod, and a plurality of pushing blocks are fixedly installed on the top of the disc. A round shaft is fixedly installed on the inner wall of the scraping box, and a dust placing plate is hinged to the outer wall of the round shaft. One end of the dust placing plate overlaps with the top end of the sliding ash pipe. The outer walls of the plurality of pushing blocks can all be slidably connected to the bottom of the dust placing plate. When the soot residues are scraped into the scraping box, the soot residues will fall onto the dust placing plate. Through the continuous rotation of the scraping box, when the dust placing plate contacts the pushing block on the top of the disc, one end of the dust placing plate will be hinged and rotated at one end of the return spring, and the dust placing plate will move upward in position. When the dust placing plate loses contact with the pushing block, the dust placing plate will be reset. Through the continuous rotation of the scraping box, the dust placing plate will undergo continuous displacement changes, so as to realize the shaking of the dust placing plate, accelerate the speed of the soot residues falling on the top end of the dust placing plate entering the sliding ash pipe, and at the same time prevent the soot residues from accumulating on the top of the dust placing plate and affecting the collection operation, and play a role in shaking the soot residues into the sliding ash pipe.

[0014] Preferably, a return spring is arranged between the bottom of the dust placing plate and the inner wall of the scraping box. When the dust placing plate loses contact with the pushing block, the return spring pulls the dust placing plate to be reset, providing a certain stability for the reset of the dust placing plate. By cooperating with the pushing block to continuously push the dust placing plate upward, the soot residues on the dust placing plate can be vibrated, and their moving speed can be accelerated.

[0015] Preferably, ash extraction pipes are fixedly installed at the tops of multiple ash deposition chambers. The outer walls of the multiple ash extraction pipes are slidably connected to the inner wall of the annular chamber. One end of each of the multiple ash extraction pipes is located outside the annular chamber. By providing weight detectors in the multiple ash deposition chambers 7, when the weight detectors detect that the soot residue contained in an ash deposition chamber 7 reaches a certain mass, at this time, an air extraction device is externally connected to the outside of the ash extraction pipe 701, and through air extraction, the soot residue placed in the ash deposition chamber 7 can be extracted, providing an extraction path for removing the soot residue in the ash deposition chamber 7 and facilitating the removal of the soot residue.

[0016] Preferably, multiple connecting rods are fixedly installed at the top of the electric guide rail. One end of each of the multiple connecting rods is fixedly connected to the outer wall of the annular chamber. Motors are fixedly installed at the tops of the multiple connecting rods. Through holes plates are fixedly installed at the output ends of the multiple motors. By providing a flue gas sensor in the annular chamber 4, when the flue gas sensor senses that the flue gas content in the annular chamber 4 is too high and smoke dispersion operation needs to be carried out in the annular chamber 4, the through holes plate 6 is driven to move by the motor 602, and the through holes plate 6 will open from the top of the air dispersion ring 10. The flue gas placed in the annular chamber 4 will disperse to the outside along the filter holes on the air dispersion ring 10, thereby realizing the function of discharging smoke.

[0017] Preferably, multiple poking rods are fixedly installed at the bottom of the through holes plate. The inner wall of the through holes plate is slidably connected to the outer wall of the filter residue chamber pipe. The outer walls of the multiple poking rods are respectively slidably connected to the inner walls of the multiple filter holes in the air dispersion ring. When the through holes plate 6 moves, the multiple poking rods 601 at the bottom of the through holes plate 6 will extend from the multiple filter holes in the air dispersion ring 10. When the flue gas sensor senses that the flue gas in the annular chamber 4 drops to a certain level, at this time, the motor 602 drives the through holes plate 6 to reset, and the multiple poking rods 601 will be inserted back into the multiple filter holes in the air dispersion ring 10 to block the filter holes. On the one hand, it can prevent the heat flow in the annular chamber 4 from leaking during heat replenishment, and on the other hand, it can prevent the substances in the flue gas from clogging the filter holes in the air dispersion ring 10, which will affect the filtering effect and is not conducive to the smoke dispersion operation.

[0018] The beneficial effects of the present invention are as follows: 1. For the zinc alloy melting waste heat recovery device described in the present invention, when the annular plate rotates, the annular plate drives the scraping box to rotate on the outer wall of the shaft rod through the ash deposition chamber and the ash sliding pipe. When the scraping box rotates, the ash scraping port on one side of the top of the scraping box scrapes the bottom of the filter residue chamber pipe, thereby scraping the soot residue adhering to the bottom of the filter residue chamber pipe and the air dispersion ring into the scraping box. Finally, the soot residue enters the ash deposition chamber through the ash sliding pipe for collection, thereby recovering the recyclable substances in the soot.

[0019] 2. The waste heat recovery device for zinc alloy melting according to the present invention drives the electric slider to slide annularly in the electric guide rail. When the electric slider slides, it drives the ring plate to rotate. When the ring plate rotates, the incoming heat flow will rotate and diverge to the bottom of the slag filtering cavity tube, and the heat will be transferred in a larger range, making the temperature distribution in the area involved in the heat flow more uniform. Thus, the heat flow can contact all parts of the bottom of the slag filtering cavity tube, increasing the contact area between the heat flow and the bottom of the slag filtering cavity tube. At the same time, the rotation and blowing of the ring plate will increase the contact area and relative velocity between the heat flow and the surrounding fluid, thereby promoting the heat conduction and heat convection processes, accelerating the heat transfer, and enabling the heat of the heat flow to be more quickly dissipated into the surrounding environment.

[0020] 3. The waste heat recovery device for zinc alloy melting according to the present invention, through the continuous rotation of the scraping box, when the ash placing plate contacts the pushing block at the top of the disc, one end of the ash placing plate will be hinged and rotated at one end of the return spring, and the ash placing plate will move upward in position. When the ash placing plate loses contact with the pushing block, the ash placing plate will return to its original position. Through the continuous rotation of the scraping box, the ash placing plate will continuously change its position, thereby realizing the shaking of the ash placing plate, accelerating the speed at which the soot residues falling on the top of the ash placing plate enter the ash sliding tube, and at the same time preventing the soot residues from accumulating on the top of the ash placing plate and affecting the collection operation.

[0021] 4. The waste heat recovery device for zinc alloy melting according to the present invention, when the ring plate drives the heat to diverge, the arc-shaped block can prevent the heat flow from diverging to the bottom of the air dispersion ring when the heat diverges upward, enabling the heat flow to better impact the bottom of the slag filtering cavity tube when diverging upward, playing a role in limiting the flow direction of the heat flow.

[0022] 5. The waste heat recovery device for zinc alloy melting according to the present invention, when it is necessary to carry out smoke dispersion operation in the ring box, the motor drives the through-hole plate to move. When the through-hole plate moves, a plurality of poking rods at the bottom of the through-hole plate will extend from a plurality of filter holes in the air dispersion ring, and the flue gas placed in the ring box will disperse to the outside along the filter holes on the air dispersion ring, thereby realizing the function of smoke exhaust. When the motor drives the through-hole plate to reset, the plurality of poking rods will be inserted back into the plurality of filter holes in the air dispersion ring to block the filter holes. On the one hand, it can prevent the heat flow in the ring box from leaking during heat replenishment, and on the other hand, it can prevent the substances in the flue gas from blocking the filter holes in the air dispersion ring, which not only affects the filtering effect but also is not conducive to the smoke dispersion operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 is the overall view of the present invention; Figure 2 is the main view of the present invention; Figure 3 It is a schematic structural view at the scraping box in the present invention; Figure 4 It is a schematic structural view at the ring plate in the present invention; Figure 5 It is a schematic structural view at the poking rod in the present invention; Figure 6 It is a schematic structural view at the shaft rod in the present invention; Figure 7 It is a schematic structural view at the arc block in the present invention; Figure 8 It is a schematic structural view at the beveled opening in the present invention; Figure 9 It is a schematic structural view at the ash sliding pipe in the present invention; Figure 10 It is a schematic structural view at the ash limiting plate in the present invention.

[0025] In the figure: 1, melting furnace; 2, slag filtering cavity pipe; 3, heat collecting arc cover; 301, flange; 4, ring box; 5, ring plate; 501, beveled opening; 6, through hole plate; 601, poking rod; 602, motor; 7, ash placing cavity; 701, ash pumping pipe; 8, electric guide rail; 801, electric slider; 802, heat insulation part; 9, scraping box; 901, ash sliding pipe; 902, ash scraping opening; 903, ash limiting plate; 904, ash placing plate; 905, return spring; 906, round shaft; 10, air diffusing ring; 11, shaft rod; 12, arc block; 13, connecting rod; 14, disc; 1401, pushing block. Detailed implementation manners

[0026] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0027] As Figures 1 to 10 shown, a zinc alloy melting waste heat recovery device according to an embodiment of the present invention includes a melting furnace 1 and a heat collecting arc cover 3. Flanges 301 are fixedly installed on the outer walls of the melting furnace 1 and the heat collecting arc cover 3, and the two flanges 301 are connected by bolts and nuts. A ring box 4 is installed on the top of the heat collecting arc cover 3, a slag filtering cavity pipe 2 is fixedly installed on the top of the ring box 4, a heat pipe is arranged at the top of the slag filtering cavity pipe 2, a water pipe is arranged inside the heat pipe, a plurality of smoke filtering holes are opened at the bottom of the slag filtering cavity pipe 2, and a ash scraping assembly is arranged inside the ring box 4. The ash scraping assembly includes an ash scraping opening 902, and the ash scraping assembly is used to drive the ash scraping opening 902 to scrape the plurality of smoke filtering holes at the bottom of the slag filtering cavity pipe 2; Since zinc alloy generates a certain amount of soot during melting, these soots will gradually deposit on the heat transfer surface at the bottom of the slag filtering cavity pipe 2 to form a heat insulation layer, increasing the thermal resistance and hindering the heat transfer, reducing the heating efficiency of the waste heat to water; When the smelting furnace 1 is performing a smelting operation, the waste heat dissipated from the smelting furnace 1 enters the annular box 4 through the heat-gathering arc cover 3. When the heat flow enters the annular box 4, the heat flow flows along the inner wall of the annular box 4 towards the slag filtering cavity pipe 2. When the heat flow flows into the slag filtering cavity pipe 2, the ash scraping assembly drives the ash scraping port 902 to scrape the bottom of the slag filtering cavity pipe 2, preventing the soot in the heat from contacting and depositing on the bottom of the slag filtering cavity pipe 2 when the heat flow contacts the bottom of the slag filtering cavity pipe 2, forming a heat-insulating layer, which affects the contact between the heat flow and the bottom of the slag filtering cavity pipe 2, reducing the heating efficiency of the heat flow to water, and being unfavorable for the waste heat recovery operation during the smelting operation of the smelting furnace 1. Through the setting of the ash scraping assembly, the heat flow can be ensured to stably heat the slag filtering cavity pipe 2, which is more conducive to the waste heat recovery operation of the heat dissipated during the operation of the smelting furnace 1. Here, it should be noted that the whole device is made of heat-resistant materials.

[0028] As Figure 8 shown, a ring plate 5 is fixedly installed on the inner wall of the annular box 4. A plurality of inclined openings 501 are formed in the inner wall of the ring plate 5. The inclined openings 501 are set at an inclined angle. A plurality of arc-shaped blocks 12 are fixedly installed on the top of the ring plate 5; When the smelting furnace 1 generates waste heat during the smelting operation, the heat flow enters the annular box 4 along the inclined openings 501 and finally diverges at the bottom of the slag filtering cavity pipe 2, serving as a path for the heat flow to enter the annular box 4. The setting of the arc-shaped blocks 12 is to prevent the heat flow from diverging at the bottom of the air-dispersing ring 10 when the heat diverges upward, so that when the heat flow diverges upward, it can better impact the bottom of the slag filtering cavity pipe 2, serving as a limiting function for the heat flow direction.

[0029] As Figures 7 to 8 shown, an electric guide rail 8 is fixedly installed on the outer wall of the annular box 4. A plurality of electric sliders 801 are slidably connected inside the electric guide rail 8. An insulating member 802 is fixedly installed between the plurality of electric sliders 801. The inner wall of the insulating member 802 is slidably connected to the outer wall of the annular box 4. One end of the plurality of electric sliders 801 is fixedly connected to the outer wall of the ring plate 5; When it is necessary to scrape the bottom of the filter residue cavity tube 2, the electric slider 801 is driven to slide in an annular manner in the electric guide rail 8. When the electric slider 801 slides, the ring plate 5 is driven to rotate. When the heat flow passes through the oblique mouth 501 and enters the ring box 4, the heat flow rotates and dissipates to the bottom of the filter residue cavity tube 2 with the rotation of the ring plate 5. The heat will be transferred over a larger range, making the temperature distribution of the area involved in the heat flow more uniform. The temperature difference of the local high temperature or low temperature area that may have existed originally will gradually decrease under the action of the rotating blowing of the heat flow, so that the heat flow can contact all parts of the bottom of the filter residue cavity tube 2, increasing the contact area between the heat flow and the bottom of the filter residue cavity tube 2, which is more conducive to the heat flow heating the domestic water in the filter residue cavity tube 2. At the same time, the rotating blowing of the ring plate 5 will increase the contact area and relative speed between the heat flow and the surrounding fluid, thereby promoting the heat conduction and heat convection processes, accelerating the heat transfer, and allowing the heat of the heat flow to be dissipated to the surrounding environment more quickly, thereby increasing the flow rate of the heat flow.

[0030] like Figures 5 to 6 As shown, a diffuser ring 10 is fixedly installed on the top of the inner wall of the ring box 4. The inner wall of the diffuser ring 10 is fixedly connected to the outer wall of the filter residue cavity tube 2. The top ends of the plurality of arc blocks 12 are all placed below the inner side of the diffuser ring 10. During operation, since high-temperature flue gas is corrosive, if it stays in the waste heat recovery equipment for a long time, it will corrode the equipment's pipes, heat exchangers and other components, shortening the equipment's service life. At the same time, the accumulation of flue gas may also cause the pressure in the equipment to increase, exceeding the tolerance range of the equipment, causing safety accidents such as explosions. Exhausting flue gas helps to maintain the pressure stability in the equipment and protect the safety of the equipment. Therefore, an air diffuser ring 10 is provided on the top of the ring box 4. When the smoke contacts the top of the filter chamber tube 2, the heat in the smoke impacts the bottom of the filter chamber tube 2 with a heat flow. When the heat flow impact is completed, the smoke will leak out from the air diffuser ring 10, reducing the smoke content in the ring box 4, protecting the service life of the parts inside the equipment, and providing a path for the smoke to leak out. By placing the top ends of multiple arc blocks 12 on the inner side and lower side of the air diffuser ring 10, the heat can flow along the inner surface of the arc block 12 to the bottom of the filter chamber tube 2 when it flows, preventing the heat from directly impacting the air diffuser ring 10, causing heat loss while also protecting the air diffuser ring 10.

[0031] like Figures 8 to 10As shown, the ash scraping assembly further includes a shaft rod 11. The top of the shaft rod 11 is fixedly connected to the bottom of the filter residue chamber tube 2, and the bottom end of the shaft rod 11 is rotatably connected to the bottom of the ring plate 5. A plurality of scraping boxes 9 are rotatably connected to the outer wall of the shaft rod 11. The internal structures of the plurality of scraping boxes 9 are the same. An ash scraping opening 902 is formed on one side of the scraping box 9, and a dust limiting plate 903 is fixedly installed on the other side of the scraping box 9. One side of the bottom of each of the plurality of scraping boxes 9 is fixedly installed with a dust sliding tube 901, and a plurality of ash placing chambers 7 are fixedly installed at the bottoms of the plurality of dust sliding tubes 901. The plurality of ash placing chambers 7 are fixedly installed on the top of the ring plate 5. The top of the ash scraping opening 902 is slidably connected to a plurality of smoke filtering holes at the bottom of the filter residue chamber tube 2; When the ring plate 5 rotates, the ring plate 5 drives the scraping box 9 to rotate on the outer wall of the shaft rod 11 through the ash placing chamber 7 and the dust sliding tube 901. When the scraping box 9 rotates, the ash scraping opening 902 on one side of the top of the scraping box 9 scrapes the bottom of the filter residue chamber tube 2, so as to scrape off the soot residues adhering to the bottom of the filter residue chamber tube 2 and the air dispersion ring 10 and enter the scraping box 9. Finally, the soot residues enter the ash placing chamber 7 through the dust sliding tube 901 for collection, so as to recycle the recyclable substances in the soot, playing a role in scraping and collecting the soot residues. The setting of the dust limiting plate 903 is to increase the slag receiving range and reduce the probability that the soot residues float due to being too loose and do not fall into the scraping box 9 when being scraped.

[0032] As Figures 9 to 10 shown, a disc 14 is fixedly installed at the top of the shaft rod 11, and a plurality of pushing blocks 1401 are fixedly installed on the top of the disc 14. A round shaft 906 is fixedly installed on the inner wall of the scraping box 9, and a dust placing plate 904 is hinged to the outer wall of the round shaft 906. One end of the dust placing plate 904 is lapped on the top end of the dust sliding tube 901. The outer walls of the plurality of pushing blocks 1401 can all be slidably connected to the bottom of the dust placing plate 904; When the soot residues are scraped into the scraping box 9, the soot residues will fall on the dust placing plate 904. Through the continuous rotation of the scraping box 9, when the dust placing plate 904 contacts the pushing block 1401 on the top of the disc 14, one end of the dust placing plate 904 will be hinged and rotated at one end of the return spring 905, and the dust placing plate 904 will move upward in position. When the dust placing plate 904 loses contact with the pushing block 1401, the dust placing plate 904 will return to its original position. Through the continuous rotation of the scraping box 9, the dust placing plate 904 will undergo continuous displacement changes, so as to realize the shaking of the dust placing plate 904, accelerating the speed at which the soot residues falling on the top end of the dust placing plate 904 enter the dust sliding tube 901, and at the same time preventing the soot residues from accumulating on the top of the dust placing plate 904 and affecting the collection operation, playing a role in shaking the soot residues into the dust sliding tube 901.

[0033] As Figure 10 shown, a return spring 905 is arranged between the bottom of the dust placing plate 904 and the inner wall of the scraping box 9; When the ash - setting plate 904 loses contact with the pushing block 1401, the reset spring 905 pulls the ash - setting plate 904 for reset, providing a certain stability for the reset of the ash - setting plate 904. By cooperating with the continuous pushing of the pushing block 1401 to move the ash - setting plate 904 upward, the shaking operation of the soot residue on the ash - setting plate 904 can be realized, accelerating its moving speed.

[0034] As Figures 6 to 7 shown, at the top of multiple ash - setting cavities 7, ash - extraction pipes 701 are fixedly installed. The outer walls of multiple ash - extraction pipes 701 are slidably connected to the inner wall of the annular box 4, and one end of multiple ash - extraction pipes 701 is placed outside the annular box 4; By arranging weight detectors in multiple ash - setting cavities 7, when the weight detector detects that the soot residue contained in a certain ash - setting cavity 7 reaches a certain mass, at this time, by externally connecting an air - extraction device to the outside of the ash - extraction pipe 701 and extracting through air flow, the soot residue placed in the ash - setting cavity 7 can be extracted, providing an extraction path for taking out the soot residue in the ash - setting cavity 7 and playing a role in facilitating the taking out of the soot residue.

[0035] As Figure 5 shown, at the top of the electric guide rail 8, multiple connecting rods 13 are fixedly installed. One end of multiple connecting rods 13 is fixedly connected to the outer wall of the annular box 4, and at the top of multiple connecting rods 13, multiple motors 602 are fixedly installed. The output ends of multiple motors 602 are fixedly installed with a through - hole plate 6; By arranging a flue - gas sensor in the annular box 4, when the flue - gas sensor senses that the flue - gas content in the annular box 4 is too high and smoke - dispersing operation needs to be carried out in the annular box 4, the motor 602 drives the through - hole plate 6 to move, and the through - hole plate 6 will open from the top of the air - dispersing ring 10. The flue gas placed in the annular box 4 will then disperse to the outside along the filter holes on the air - dispersing ring 10, thus realizing the function of smoke exhaust.

[0036] As Figure 5 shown, at the bottom of the through - hole plate 6, multiple poking rods 601 are fixedly installed. The inner wall of the through - hole plate 6 is slidably connected to the outer wall of the filter - residue cavity pipe 2, and the outer walls of multiple poking rods 601 are respectively slidably connected to the inner walls of multiple filter holes in the air - dispersing ring 10; When the through - hole plate 6 moves, multiple poking rods 601 at the bottom of the through - hole plate 6 will extend from multiple filter holes in the air - dispersing ring 10. When the flue - gas sensor senses that the flue gas in the annular box 4 drops to a certain extent, at this time, the motor 602 drives the through - hole plate 6 to reset, and multiple poking rods 601 will be inserted back into multiple filter holes in the air - dispersing ring 10 to block the filter holes. On the one hand, it can prevent the heat flow in the annular box 4 from leaking during heat replenishment, and on the other hand, it can prevent the substances in the flue gas from blocking the filter holes in the air - dispersing ring 10, affecting the filtering effect and also being unfavorable for the flue - gas dispersion operation.

[0037] Working principle: when the smelting furnace 1 is performing smelting operation, the waste heat dissipated in the smelting furnace 1 enters the annular box 4 through the heat-collecting arc cover 3. When the heat flow enters the annular box 4, the heat flow flows along the inner wall of the annular box 4 to the filter cavity tube 2. When the heat flow flows into the filter cavity tube, the scraping assembly drives the scraping port 902 to scrape the bottom of the filter cavity tube 2 to prevent the smoke in the heat from contacting and depositing on the bottom of the filter cavity tube 2 when the heat flow contacts the bottom of the filter cavity tube 2, forming a heat insulation layer, affecting the contact between the heat flow and the bottom of the filter cavity tube 2, reducing the heating efficiency of the heat flow on the water, and being not conducive to the recovery of the waste heat generated during the smelting operation of the smelting furnace 1. By setting the scraping assembly, it is possible to ensure that the heat flow stably heats the filter cavity tube 2, which is more conducive to the recovery of the waste heat dissipated during the operation in the smelting furnace 1. When the smelting furnace 1 generates waste heat during smelting operation, the heat flow enters the ring box 4 along the inclined opening 501 and is finally dissipated at the bottom of the filter slag cavity tube 2, thereby providing a path for the heat flow to enter the ring box 4. The arc block 12 is provided to prevent the heat flow from dissipating at the bottom of the diffuser ring 10 when the heat dissipates upward, so that the heat flow can better impact the bottom of the filter slag cavity tube 2 when dissipating upward, thereby limiting the flow direction of the heat flow. When it is necessary to scrape the bottom of the filter residue cavity tube 2, the electric slider 801 is driven to slide in an annular manner in the electric guide rail 8. When the electric slider 801 slides, the ring plate 5 is driven to rotate. When the heat flow passes through the oblique mouth 501 and enters the ring box 4, the heat flow rotates and dissipates to the bottom of the filter residue cavity tube 2 with the rotation of the ring plate 5. The heat will be transferred over a larger range, making the temperature distribution of the area involved in the heat flow more uniform. The temperature difference of the local high temperature or low temperature area that may have existed originally will gradually decrease under the action of the rotating blowing of the heat flow, so that the heat flow can contact various parts of the bottom of the filter residue cavity tube 2, increasing the contact area between the heat flow and the bottom of the filter residue cavity tube 2, which is more conducive to the heat flow heating the domestic water in the filter residue cavity tube 2. At the same time, the rotating blowing of the ring plate 5 will increase the contact area and relative speed between the heat flow and the surrounding fluid, thereby promoting the heat conduction and heat convection processes, accelerating the heat transfer, and allowing the heat of the heat flow to be dissipated to the surrounding environment more quickly, thereby increasing the flow rate of the heat flow. During operation, since the high-temperature flue gas is corrosive to some extent, staying in the waste heat recovery equipment for a long time will corrode components such as the pipes and heat exchangers of the equipment, shortening the service life of the equipment. At the same time, the accumulation of flue gas may also cause the pressure inside the equipment to rise, exceeding the bearing range of the equipment and triggering safety accidents such as explosions. Discharging the flue gas helps to maintain the pressure stability inside the equipment and protect the safety of the equipment. Therefore, a gas-dispersing ring 10 is arranged at the top of the ring box 4. When the soot contacts the top of the slag filtering cavity pipe 2, the heat in the soot impacts the bottom of the slag filtering cavity pipe 2 with a heat flow. When the heat flow impact is over, the soot will leak out from the gas-dispersing ring 10, reducing the content of soot in the ring box 4, protecting the service life of the internal parts of the equipment, and providing a path for the soot to leak out. By placing the tops of multiple arc-shaped blocks 12 below the inner side of the gas-dispersing ring, when the heat flows, it can flow along the inner surface of the arc-shaped blocks 12 towards the bottom of the slag filtering cavity pipe 2, preventing the heat from directly impacting the gas-dispersing ring 10, causing heat loss and also protecting the gas-dispersing ring 10; When the ring plate 5 drives the heat to dissipate, the heat flow will be transmitted and dissipated upward between the first heat dissipation plate 502 and the second heat dissipation plate 503. The arc-shaped blocks 12 are provided to prevent the heat flow from dissipating at the bottom of the gas-dispersing ring 10 when the heat dissipates upward, so that when the heat dissipates upward, it can better impact the bottom of the slag filtering cavity pipe 2, playing a role in limiting the flow direction of the heat flow; When the ring plate 5 rotates, the ring plate 5 drives the scraping box 9 to rotate on the outer wall of the shaft rod 11 through the ash storage cavity 7 and the ash sliding pipe 901. When the scraping box 9 rotates, the ash scraping port 902 on one side of the top of the scraping box 9 scrapes the bottom of the slag filtering cavity pipe 2, thereby scraping off the soot residues adhering to the bottom of the slag filtering cavity pipe 2 and the gas-dispersing ring 10 and entering the scraping box 9. Finally, the soot residues enter the ash storage cavity 7 through the ash sliding pipe 901 for collection, so as to recycle the recyclable substances in the soot, playing a role in scraping and collecting the soot residues. The setting of the ash limiting plate 903 is to increase the slag receiving range and reduce the probability that the soot residues float without falling into the scraping box 9 due to being too loose when being scraped; When the soot residue is scraped into the scraping box 9, the soot residue will fall onto the ash placement plate 904. Through the continuous rotation of the scraping box 9, when the ash placement plate 904 contacts the pushing block 1401 on the top of the disc 14, one end of the ash placement plate 904 will be hinged and rotated at one end of the return spring 905, and the ash placement plate 904 will move upward in position. When the ash placement plate 904 loses contact with the pushing block 1401, the ash placement plate 904 will be reset. Through the continuous rotation of the scraping box 9, the ash placement plate 904 will undergo continuous displacement changes, thereby realizing the shaking of the ash placement plate 904, accelerating the speed at which the soot residue falling on the top of the ash placement plate 904 enters the ash sliding pipe 901, and at the same time preventing the soot residue from accumulating on the top of the ash placement plate 904, affecting the collection operation, and playing the role of shaking the soot residue into the ash sliding pipe 901; When the ash placement plate 904 loses contact with the pushing block 1401, the return spring 905 pulls the ash placement plate 904 to be reset, providing a certain stability for the reset of the ash placement plate 904. By cooperating with the continuous pushing of the pushing block 1401 to move the ash placement plate 904 upward, the shaking operation of the soot residue on the ash placement plate 904 can be realized, accelerating its moving speed; By setting weight detectors in multiple ash placement cavities 7, when the weight detectors detect that the soot residue contained in an ash placement cavity 7 reaches a certain mass, at this time, by externally connecting an air extraction device to the outside of the ash extraction pipe 701 and extracting through air flow, the soot residue placed in the ash placement cavity 7 can be extracted, providing an extraction path for taking out the soot residue in the ash placement cavity 7 and playing the role of facilitating the taking out of the soot residue; By setting a flue gas sensor in the annular box 4, when the flue gas sensor senses that the flue gas content in the annular box 4 is too high and smoke dispersion operation needs to be carried out in the annular box 4, the through-hole plate 6 is driven by the motor 602 to move, and the through-hole plate 6 will open from the top of the air dispersion ring 10, and the flue gas placed in the annular box 4 will disperse to the outside along the filter holes on the air dispersion ring 10, thereby realizing the role of smoke exhaust; When the through-hole plate 6 moves, a plurality of poking rods 601 at the bottom of the through-hole plate 6 will protrude from a plurality of filter holes in the air dispersion ring 10. When the flue gas sensor senses that the flue gas in the annular box 4 drops to a certain degree, at this time, the motor 602 drives the through-hole plate 6 to be reset, and the plurality of poking rods 601 will be inserted back into a plurality of filter holes in the air dispersion ring 10 to block the filter holes. On the one hand, it can prevent the heat flow in the annular box 4 from leaking during heat replenishment, and on the other hand, it can prevent the substances in the flue gas from blocking the filter holes in the air dispersion ring 10, affecting the filtering effect and being unfavorable for the flue gas dispersion operation.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A zinc alloy melting waste heat recovery device, characterized in that: It includes a smelting furnace and a heat-gathering arc cover. Flange plates are fixedly installed on the outer walls of both the smelting furnace and the heat-gathering arc cover. The two flange plates are connected by bolts and nuts. A ring box is installed at the top of the heat-gathering arc cover. A slag-filtering cavity pipe is fixedly installed at the top of the ring box. A heat pipe is arranged at the top of the slag-filtering cavity pipe. A water pipe is arranged inside the heat pipe. A plurality of smoke-filtering holes are opened at the bottom of the slag-filtering cavity pipe. A dust-scraping component is arranged inside the ring box. The dust-scraping component includes a dust-scraping opening, and the dust-scraping component is used to drive the dust-scraping opening to scrape the plurality of smoke-filtering holes at the bottom of the slag-filtering cavity pipe.

2. The zinc alloy melting waste heat recovery device according to claim 1, characterized in that: A ring plate is fixedly installed on the inner wall of the ring box. A plurality of inclined openings are opened on the inner wall of the ring plate. The inclined openings are set at an inclined angle. A plurality of arc-shaped blocks are fixedly installed at the top of the ring plate.

3. The zinc alloy melting waste heat recovery device according to claim 2, characterized in that: An electric guide rail is fixedly installed on the outer wall of the ring box. A plurality of electric sliders are slidably connected inside the electric guide rail. An insulating part is fixedly installed between the plurality of electric sliders. The inner wall of the insulating part is slidably connected with the outer wall of the ring box. One ends of the plurality of electric sliders are fixedly connected with the outer wall of the ring plate.

4. The zinc alloy melting waste heat recovery device according to claim 3, wherein: A gas-dispersing ring is fixedly installed at the top of the inner wall of the ring box. The inner wall of the gas-dispersing ring is fixedly connected with the outer wall of the slag-filtering cavity pipe. The tops of the plurality of arc-shaped blocks are all located below the inner side of the gas-dispersing ring.

5. The zinc alloy melting waste heat recovery device according to claim 4, wherein: The dust-scraping component further includes a shaft rod. The top of the shaft rod is fixedly connected with the bottom of the slag-filtering cavity pipe. The bottom end of the shaft rod is rotatably connected with the bottom of the ring plate. A plurality of scraping boxes are rotatably connected to the outer wall of the shaft rod. The internal structures of the plurality of scraping boxes are the same. The dust-scraping opening is opened on one side of the scraping box. A dust-limiting plate is fixedly installed on the other side of the scraping box. One sides of the bottoms of the plurality of scraping boxes are all fixedly installed with ash-sliding pipes. A plurality of ash-holding cavities are fixedly installed at the bottoms of the plurality of ash-sliding pipes. The plurality of ash-holding cavities are fixedly installed on the top of the ring plate. The top of the dust-scraping opening is slidably connected with the plurality of smoke-filtering holes at the bottom of the slag-filtering cavity pipe.

6. The zinc alloy melting waste heat recovery device according to claim 5, wherein: A disc is fixedly installed at the top of the shaft rod. A plurality of pushing blocks are fixedly installed on the top of the disc. A round shaft is fixedly installed on the inner wall of the scraping box. A ash-holding plate is hinged to the outer wall of the round shaft. One end of the ash-holding plate is lapped on the top end of the ash-sliding pipe. The outer walls of the plurality of pushing blocks can all be slidably connected with the bottom of the ash-holding plate.

7. The zinc alloy melting waste heat recovery device according to claim 6, characterized in that: A return spring is arranged between the bottom of the ash-holding plate and the inner wall of the scraping box.

8. A zinc alloy smelting waste heat recovery device according to claim 7, characterized in that: A plurality of ash-drawing pipes are fixedly installed at the tops of the plurality of ash-holding cavities. The outer walls of the plurality of ash-drawing pipes are all slidably connected with the inner wall of the ring box. One ends of the plurality of ash-drawing pipes are located outside the ring box.

9. A zinc alloy smelting waste heat recovery device according to claim 8, characterized in that: A plurality of connecting rods are fixedly installed at the top of the electric guide rail. One ends of the plurality of connecting rods are all fixedly connected with the outer wall of the ring box. A plurality of motors are fixedly installed at the tops of the plurality of connecting rods. Output ends of the plurality of motors are fixedly installed with a through-hole plate.

10. A zinc alloy melting waste heat recovery device according to claim 9, characterized in that: A plurality of poking rods are fixedly installed at the bottom of the through-hole plate. The inner wall of the through-hole plate is slidably connected with the outer wall of the slag-filtering cavity pipe. The outer walls of the plurality of poking rods are respectively slidably connected with the inner walls of the plurality of filter holes in the gas-dispersing ring.

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