Smoke exhaust device for metal casting processing desulfurization

Abstract

The invention relates to the technical field of smoke exhaust devices, and discloses a smoke exhaust device for metal casting processing desulfurization, the smoke exhaust device for metal casting processing desulfurization comprises a casting desulfurization boiler, one side of the casting desulfurization boiler is fixedly connected with a safety valve, and the other side of the casting desulfurization boiler is fixedly connected with a smoke exhaust device. A first smoke exhaust pipeline is fixedly connected to one side of the safety valve, a heat exchange device is movably connected to the bottom of the first smoke exhaust pipeline, a metal part heating device is arranged on the back face of the heat exchange device, a second smoke exhaust pipeline is fixedly connected to the bottom of one end of the heat exchange device, and a smoke outlet pipe is fixedly connected to one end of the second smoke exhaust pipeline. The top of the smoke outlet pipe is fixedly connected with a cleaning mechanism, the temperature in smoke can be effectively reduced, effective circulation of energy is achieved, meanwhile, moisture on the metal part can be removed, and therefore the amount of steam generated by rapid vaporization when the moisture makes contact with the high temperature is greatly reduced, and the risk of steam explosion can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of smoke exhaust devices, and more specifically to a smoke exhaust device for metal casting and desulfurization. Background Art

[0002] Desulfurization in metal casting is a technology that reduces the sulfur content in metal during the metal casting process. Sulfur is often regarded as a harmful element in metal materials because it can cause hot and cold brittleness of metal castings, affecting the mechanical properties and service life of castings. When the metal has been heated to a liquid state and additives are added inside, it is convenient to add desulfurizers to react chemically with sulfur to form sulfides that are easy to remove, thereby removing or reducing sulfur and improving the quality and performance of castings.

[0003] The metal casting processing desulfurization device includes a drying component, a stirring and mixing component, a precipitation and separation component, a monitoring and adjustment component and a smoke exhaust device component. The metal casting processing desulfurization device realizes efficient desulfurization treatment of the metal melt through the steps of raw material input and mixing, stirring and reaction, precipitation and separation, cooling and discharge, monitoring and adjustment, etc., while paying attention to environmental protection and energy conservation and emission reduction. Among them, the smoke exhaust device component has efficient purification and smoke exhaust functions, which can effectively protect the environment and improve air quality.

[0004] The shortcomings of existing fume exhaust devices for desulfurization in metal casting processing: First, metal casting desulfurization requires a high temperature of several thousand degrees Celsius to ensure that the metal is completely desulfurized for subsequent processing. These high-temperature operations will generate a lot of heat energy, and during the desulfurization process, the desulfurization material will react chemically with the sulfur in the molten metal, and these chemical reactions are usually exothermic reactions, which causes the flue gas in the desulfurization exhaust device to contain a lot of heat energy, which will cause energy loss if not utilized.

[0005] Second: During the desulfurization process, impurities in the metal raw materials contain oxides and compounds that volatilize at high temperatures and are discharged with the flue gas. After cooling, they will be deposited on the inner wall of the exhaust device to form dust and particulate matter. As time goes by, this blockage phenomenon will gradually intensify, eventually leading to poor exhaust and affecting the normal desulfurization of metal casting processing.

[0006] Third: The moisture on the surface of metal parts must be removed before they are placed in the desulfurization boiler. If the water content in the metal parts or raw materials is high, the water will vaporize rapidly when it comes into contact with high-temperature metal, which may cause a violent steam explosion and cause casualties. Summary of the invention

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fume exhaust device for desulfurization in metal casting processing to solve the problems existing in the above-mentioned background technology.

[0008] The present invention provides the following technical solution: a smoke exhaust device for metal casting desulfurization, comprising a casting desulfurization boiler, including the casting desulfurization boiler, a safety valve is fixedly connected to one side of the casting desulfurization boiler, a first smoke exhaust pipe is fixedly connected to one side of the safety valve, a heat exchange device is movably connected to the bottom of the first smoke exhaust pipe, a metal part heating device is provided on the back of the heat exchange device, a second smoke exhaust pipe is fixedly connected to the bottom of one end of the heat exchange device, a smoke outlet pipe is fixedly connected to one end of the second smoke exhaust pipe, and a cleaning mechanism is fixedly connected to the top of the smoke outlet pipe; Furthermore, the heat exchange device includes an outer tube, a fixed tube sheet, a baffle, a bundle tube, a flow groove, a support leg, a flue gas inlet, a flue outlet, a tube box, a partition plate, a cover, a first circulation port and a second circulation port, the inner surface of the outer tube is fixedly connected to the fixed tube sheet on both sides, the surface of the fixed tube sheet is provided with a circular hole and is fixedly connected to the bundle tube, the inner surface of the outer tube is fixedly connected to the baffle, the baffles are evenly distributed on the inner wall of the outer tube and are equally spaced, and flow grooves are provided between the outer walls of the bundle tubes.

[0009] Furthermore, one side of the outer tube is movably connected to a tube box, a partition plate is fixedly connected to the middle of the tube box, a smoke inlet is provided at the top of the tube box, a flue outlet is provided at the bottom of the tube box, a cover is movably connected to one side of the outer tube, a first circulation port is fixedly connected to the bottom of one end of the outer surface of the outer tube, and a second circulation port is fixedly connected to the top of the other end of the outer surface of the outer tube.

[0010] Furthermore, the metal part heating device includes a storage box, a heating water tank, a first circulation pipe, a second circulation pipe and a pump. The outer surface of the storage box is fixedly connected to the heating water tank, the front of the heating water tank is fixedly connected to the first circulation pipe, one end of the first circulation pipe is fixedly connected to the second circulation port, one side of the heating water tank is fixedly connected to the second circulation pipe, the middle of the second circulation pipe is fixedly connected to the pump, and one end of the second circulation pipe is fixedly connected to the first circulation port.

[0011] Furthermore, the cleaning mechanism includes a motor, a first gear, a second gear, a transmission rod, a first conical tooth, a second conical tooth, a first threaded rod, a first moving block, a scraper, a third conical tooth, a fourth conical tooth, a second threaded rod, a second moving block and a brush plate, one side of the motor is fixedly connected to the first gear, the front side of the first gear is movably connected to the second gear, the middle part of the second gear is fixedly connected to the transmission rod, one side of the transmission rod is fixedly connected to the first conical tooth, the bottom of the first conical tooth is movably connected to the second conical tooth, the bottom of the second conical tooth is fixedly connected to the first threaded rod, the outer surface of the second threaded rod is movably connected to the first moving block, and the outer surface of the first moving block is fixedly connected to the scraper.

[0012] Furthermore, a third conical tooth is fixedly connected to the other side of the transmission rod, a fourth conical tooth is movably connected to the bottom of the third conical tooth, a second threaded rod is fixedly connected to the bottom of the fourth conical tooth, a second movable block is movably connected to the outer surface of the second threaded rod, a brush plate is movably connected to one side of the second movable block, a filter is provided on one side of the brush plate, and a smoke outlet is fixedly connected to the outer surface of the filter.

[0013] Furthermore, the first moving block is provided with threads inside and is matched with the first threaded rod, and the second moving block is also provided with threads inside and is matched with the second threaded rod.

[0014] Furthermore, the number of thread turns on the first threaded rod is the same as the number of thread turns on the second threaded rod.

[0015] Technical effects and advantages of the present invention: The present invention pours high-temperature flue gas into the interior of the heat exchange device, and the high-temperature flue gas circulates in the bundle tube to exchange heat energy with the low-temperature cold water in the circulation groove, so as to effectively reduce the temperature in the flue gas and realize effective recycling of energy. At the same time, before desulfurization, the metal parts need to be heated to remove moisture on the workpieces. The high temperature in the flue gas can be heated by setting the heating water tank and the circulation pipe to increase the temperature of the water flow, thereby removing moisture on the metal parts, thereby greatly reducing the amount of steam generated by rapid vaporization when the moisture contacts the high temperature, which helps to reduce the risk of steam explosion; and by starting the motor, the transmission rod rotates and finally the first threaded rod and the second threaded rod rotate. When the first threaded rod rotates, the first moving block drives the scraper to move inside the smoke outlet pipe to scrape off the attachments, and when the second threaded rod rotates, the second moving block drives the brush plate to move on the filter to scrape off the dirt on the surface of the filter, and the scraped dirt is blown out of the smoke outlet through the discharged flue gas, which is conducive to making the flue of the smoke exhaust device unobstructed and ensuring the normal progress of metal processing desulfurization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the metal part heating device of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the heat exchange device of the present invention.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the heat exchange device of the present invention.

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the smoke outlet pipe of the present invention.

[0021] Figure 6 It is a schematic diagram of the cleaning mechanism structure of the present invention.

[0022] The accompanying drawings are marked as follows: 1. Casting desulfurization boiler; 101. Safety valve; 102. First smoke exhaust pipe; 103. Second smoke exhaust pipe; 104. Smoke outlet pipe; 105. Smoke outlet; 106. Filter; 2. Heat exchange device; 201. Outer tube; 2011. Fixed tube sheet; 2012. Baffle; 2013. Bundle tube; 2014. Circulation slot; 202. Support foot; 203. Smoke inlet; 2031. Smoke outlet; 204. Pipe box; 205. Partition plate; 206. Cover; 207. First circulation port; 2071. Second circulation port; 3. Metal Part heating device; 301, storage box; 302, heating water tank; 303, first circulation pipe; 304, second circulation pipe; 305, pump; 4, cleaning mechanism; 401, motor; 402, first gear; 403, second gear; 404, transmission rod; 405, first conical tooth; 4051, second conical tooth; 4052, first threaded rod; 4053, first moving block; 4054, scraper; 406, third conical tooth; 4061, fourth conical tooth; 4062, second threaded rod; 4063, second moving block; 4064, brush plate. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are only examples. The smoke exhaust device for desulfurization of metal casting processing involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0024] Reference Figure 1-6 The present invention provides a smoke exhaust device for metal casting desulfurization, including a casting desulfurization boiler 1, a safety valve 101 is fixedly connected to one side of the casting desulfurization boiler 1, a first smoke exhaust pipe 102 is fixedly connected to one side of the safety valve 101, a heat exchange device 2 is movably connected to the bottom of the first smoke exhaust pipe 102, a metal part heating device 3 is provided on the back of the heat exchange device 2, a second smoke exhaust pipe 103 is fixedly connected to the bottom of one end of the heat exchange device 2, a smoke outlet pipe 104 is fixedly connected to one end of the second smoke exhaust pipe 103, and a cleaning mechanism 4 is fixedly connected to the top of the smoke outlet pipe 104.

[0025] In a preferred embodiment, the heat exchange device 2 includes an outer tube 201, a fixed tube sheet 2011, a baffle 2012, a bundle tube 2013, a flow groove 2014, a support leg 202, a flue gas inlet 203, a flue outlet 2031, a tube box 204, a partition plate 205, a cover 206, a first circulation port 207 and a second circulation port 2071. The fixed tube sheets 2011 are fixedly connected to both sides of the inner surface of the outer tube 201. The surface of the fixed tube sheet 2011 is provided with circular holes and is fixedly connected to the bundle tube 2013, which can provide support and connection for the bundle tube 2013 and facilitate the installation of the bundle tube 2013. The inner surface of the outer tube 201 is fixedly connected to the baffle 2012, which is evenly distributed on the inner wall of the outer tube 201 and is spaced equally. The baffle 2012 is provided so that more water can be in contact with the bundle tube 2013. The water flow is touched for a period of time to increase the temperature of the water flow. A flow groove 2014 is provided between the outer walls of the bundle tube 2013. The setting of the flow groove 2014 can provide space for the water flow to flow. One side of the outer tube 201 is movably connected with a tube box 204. The middle part of the tube box 204 is fixedly connected with a partition plate 205. The partition plate 205 can be used to isolate the high-temperature flue gas when it enters the tube box 204 so that the high-temperature flue gas can be discharged through the flue outlet 2031 at the bottom of the partition plate 205. A flue gas inlet 203 is provided at the top of the tube box 204. A flue outlet 2031 is provided at the bottom of the tube box 204. A cover 206 is movably connected to one side of the outer tube 201. The bottom of one end of the outer surface of the outer tube 201 is fixedly connected with a first circulation port 207, and the top of the other end of the outer surface of the outer tube 201 is fixedly connected with a second circulation port 2071.

[0026] In a preferred embodiment, the metal part heating device 3 includes a storage box 301, a heating water tank 302, a first circulation pipe 303, a second circulation pipe 304 and a pump 305. The outer surface of the storage box 301 is fixedly connected to the heating water tank 302, the front of the heating water tank 302 is fixedly connected to the first circulation pipe 303, one end of the first circulation pipe 303 is fixedly connected to the second circulation port 2071, one side of the heating water tank 302 is fixedly connected to the second circulation pipe 304, the middle of the second circulation pipe 304 is fixedly connected to the pump 305, and one end of the second circulation pipe 304 is fixedly connected to the first circulation port 207, so that the water in the heating water tank 302 can flow through the second circulation port 2071 to the first circulation pipe 303 and finally flow into the heating water tank 302 to continuously circulate and heat the internal parts of the storage box 301.

[0027] In a preferred embodiment, the cleaning mechanism 4 includes a motor 401, a first gear 402, a second gear 403, a transmission rod 404, a first conical tooth 405, a second conical tooth 4051, a first threaded rod 4052, a first moving block 4053, a scraper 4054, a third conical tooth 406, a fourth conical tooth 4061, a second threaded rod 4062, a second moving block 4063 and a brush plate 4064. One side of the motor 401 is fixedly connected to the first gear 402, the front of the first gear 402 is movably connected to the second gear 403, and the middle part of the second gear 403 is fixedly connected to the transmission rod 404. When the motor 401 is started, the first gear 402 can be used to transmit the second gear 403 to make the transmission rod 404 start to rotate. One side of the transmission rod 404 is fixedly connected to the first conical tooth 405, the bottom of the first conical tooth 405 is movably connected to the second conical tooth 4051, and the second conical tooth 405 1 is fixedly connected to the bottom of the first threaded rod 4052, the outer surface of the second threaded rod 4062 is movably connected to the first moving block 4053, the outer surface of the first moving block 4053 is fixedly connected to the scraper 4054, the other side of the transmission rod 404 is fixedly connected to the third conical tooth 406, the two ends of the transmission rod 404 are respectively connected to the first conical tooth 405 and the third conical tooth 406, and one power source supplies energy to two mechanisms, which can more effectively utilize energy and improve the utilization rate of energy waves, the bottom of the third conical tooth 406 is movably connected to the fourth conical tooth 4061, the bottom of the fourth conical tooth 4061 is fixedly connected to the second threaded rod 4062, the outer surface of the second threaded rod 4062 is movably connected to the second moving block 4063, one side of the second moving block 4063 is movably connected to the brush plate 4064, one side of the brush plate 4064 is provided with a filter 106, and the outer surface of the filter 106 is fixedly connected to the smoke outlet 105.

[0028] In a preferred embodiment, the first moving block 4053 is provided with a thread inside and is adapted to the first threaded rod 4052, and the second moving block 4063 is also provided with a thread inside and is adapted to the second threaded rod 4062, so that the moving block can move on the threaded rod, and the number of thread turns on the first threaded rod 4052 is the same as the number of thread turns on the second threaded rod 4062. Since the heights of the second threaded rod 4062 are different from those of the second threaded rod 4062, the same number of thread turns can make the movement cycle of the brush plate 4064 and the scraper 4054 the same.

[0029] The working principle of the present invention is as follows: a metal part is placed in a casting desulfurization boiler 1. As impurities in the metal raw material react with oxygen at high temperature, a large amount of high-temperature flue gas is generated. The high-temperature flue gas is transmitted to the first flue gas exhaust pipe 102 through the safety valve 101, and then transmitted to the interior of the internal heat exchange device 2. The high-temperature flue gas enters the pipe box 204 through the flue gas inlet 203. The partition plate 205 is set so that the high-temperature flue gas can only be at the top of the pipe box 204. The pipe box 204 is connected to the bundle pipe 2013, so the high-temperature flue gas is transmitted to the cover head 206 through the bundle pipe 2013. Since the high-temperature gas continuously flows into the cover head 206 from one end of the bundle pipe 2013 In order to find an outlet, the high-temperature gas can only flow from the bundle tube 2013 at the bottom of the cover head 206, and the high-temperature gas flows to the bottom of the partition plate 205 and flows into the second smoke exhaust pipe 103 through the flue outlet 2031. At this time, the pump 305 is started, and the pump 305 transfers the cooled water in the heating water tank 302 to the first circulation port 207 through the second circulation pipe 304. Then the cold water enters the circulation groove 2014 in the gap between the bundle tubes 2013. Since the surface temperature of the bundle tubes 2013 is high and the temperature of the cold water in the circulation groove 2014 is low, the temperature of the cold water is increased through the continuous contact between the cold water and the bundle tubes 2013, and the baffle 212 is set. The arrangement can slow down the flow rate of the cold water so that it mostly connects with the bundle tube 2013, and then the water flows through the second circulation port 2071 to the first circulation pipe 303 and finally flows to the heating water tank 302 to continuously circulate and heat the internal parts of the storage box 301; at this time, the flue gas after cooling enters the smoke outlet pipe 104 through the second smoke exhaust pipe 103, and the smoke will be deposited on the inner wall of the smoke exhaust device after cooling. In order to quickly clean up, the motor 401 is started to rotate the first gear 402. When the first gear 402 rotates, the second gear 403 rotates accordingly, and the transmission rod 404 is connected to the second gear 403 to rotate the first cone gear 405. When the first cone gear 40 After the second conical tooth 4051 rotates, the first threaded rod 4052 rotates, and the first moving block 4053 moves. At this time, the scraper 4054 moves inside the smoke outlet pipe 104 to scrape off the attached matter. At this time, as the transmission rod 404 rotates, the third conical tooth 406 on the other side starts to rotate. Then, the fourth conical tooth 4061 drives the second threaded rod 4062 to rotate and the second moving block 4063 drives the brush plate 4064 to move on the filter screen 106 to scrape off the dirt on the surface of the filter screen 106. The scraped dirt is blown out of the smoke outlet 105 through the discharged smoke.

[0030] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fume exhaust device for metal casting desulfurization, comprising a casting desulfurization boiler (1), characterized in that: The invention comprises a casting desulfurization boiler (1), wherein a safety valve (101) is fixedly connected to one side of the casting desulfurization boiler (1), a first smoke exhaust pipe (102) is fixedly connected to one side of the safety valve (101), a heat exchange device (2) is movably connected to the bottom of the first smoke exhaust pipe (102), a metal heating device (3) is provided on the back of the heat exchange device (2), a second smoke exhaust pipe (103) is fixedly connected to the bottom of one end of the heat exchange device (2), a smoke outlet pipe (104) is fixedly connected to one end of the second smoke exhaust pipe (103), and a cleaning mechanism (4) is fixedly connected to the top of the smoke outlet pipe (104).

2. A fume exhaust device for metal casting desulfurization according to claim 1, characterized in that: The heat exchange device (2) comprises an outer tube (201), a fixed tube sheet (2011), a baffle (2012), a bundle tube (2013), a circulation slot (2014), a support leg (202), a flue gas inlet (203), a flue outlet (2031), a tube box (204), a partition plate (205), a cover (206), a first circulation port (207), and a second circulation port (2071); fixed tube sheets (2011) are fixedly connected to both sides of the inner surface of the outer tube (201); a circular hole is provided on the surface of the fixed tube sheet (2011) and is fixedly connected to the bundle tube (213); a baffle (212) is fixedly connected to the inner surface of the outer tube (201); the baffles (2012) are evenly distributed on the inner wall of the outer tube (201) and are spaced evenly apart; and circulation slots (2014) are provided between the outer walls of the bundle tube (2013).

3. A fume exhaust device for metal casting desulfurization according to claim 2, characterized in that: One side of the outer tube (201) is movably connected to a tube box (204), a partition plate (205) is fixedly connected to the middle of the tube box (204), a smoke inlet (203) is provided at the top of the tube box (204), a smoke duct outlet (2031) is provided at the bottom of the tube box (204), a cover (206) is movably connected to one side of the outer tube (201), a first circulation port (207) is fixedly connected to the bottom of one end of the outer surface of the outer tube (201), and a second circulation port (2071) is fixedly connected to the top of the other end of the outer surface of the outer tube (201).

4. A fume exhaust device for metal casting desulfurization according to claim 1, characterized in that: The metal part heating device (3) comprises a storage box (301), a heating water tank (302), a first circulation pipe (303), a second circulation pipe (304) and a pump (305); the outer surface of the storage box (301) is fixedly connected to the heating water tank (302); the front surface of the heating water tank (302) is fixedly connected to the first circulation pipe (303); one end of the first circulation pipe (303) is fixedly connected to the second circulation port (2071); one side of the heating water tank (302) is fixedly connected to the second circulation pipe (304); the middle part of the second circulation pipe (304) is fixedly connected to the pump (305); and one end of the second circulation pipe (304) is fixedly connected to the first circulation port (2071).

5. The fume exhaust device for metal casting desulfurization according to claim 1, characterized in that: The cleaning mechanism (4) comprises a motor (401), a first gear (402), a second gear (403), a transmission rod (404), a first conical tooth (405), a second conical tooth (4051), a first threaded rod (4052), a first moving block (4053), a scraper (4054), a third conical tooth (406), a fourth conical tooth (4061), a second threaded rod (4062), a second moving block (4063) and a brush plate (4064). One side of the motor (401) is fixedly connected to the first gear (402). The front side of the first gear (402) is A second gear (403) is movably connected, a transmission rod (404) is fixedly connected to the middle of the second gear (403), a first conical tooth (405) is fixedly connected to one side of the transmission rod (404), a second conical tooth (4051) is movably connected to the bottom of the first conical tooth (4055), a first threaded rod (4052) is fixedly connected to the bottom of the second conical tooth (4051), a first moving block (4053) is movably connected to the outer surface of the second threaded rod (4062), and a scraper (4054) is fixedly connected to the outer surface of the first moving block (4053).

6. A fume exhaust device for metal casting desulfurization according to claim 5, characterized in that: The other side of the transmission rod (404) is fixedly connected to a third conical tooth (406), the bottom of the third conical tooth (406) is movably connected to a fourth conical tooth (4061), the bottom of the fourth conical tooth (4061) is fixedly connected to a second threaded rod (4062), the outer surface of the second threaded rod (4062) is movably connected to a second moving block (4063), one side of the second moving block (4063) is movably connected to a brush plate (4064), one side of the brush plate (4064) is provided with a filter screen (106), and the outer surface of the filter screen (106) is fixedly connected to a smoke outlet (105).

7. A fume exhaust device for metal casting desulfurization according to claim 6, characterized in that: The first moving block (4053) is provided with a thread inside and is compatible with the first threaded rod (4052), and the second moving block (4063) is also provided with a thread inside and is compatible with the second threaded rod (4062).

8. The fume exhaust device for metal casting desulfurization according to claim 6, characterized in that: The number of thread turns on the first threaded rod (4052) is the same as the number of thread turns on the second threaded rod (4062).

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