An environmental protection device for collecting foundry waste gas and its treatment method

Abstract

The present invention discloses a casting waste gas collection and environmental protection device and a treatment method thereof, which relates to the field of waste gas treatment technology, including a shell mechanism, a dust removal mechanism is arranged inside the shell mechanism, and both sides of the shell mechanism are provided with a cooling mechanism for cooling the casting waste gas, and the opposite sides of the two cooling mechanisms are provided with an air supply mechanism for accelerating the flow of waste gas. The cone shell provided by the present invention is located on both sides of the casing, and can collect waste gas from different directions, and the spiral filter plate is designed in a wave shape, which increases the contact area with the waste gas and improves the capture efficiency of particulate matter, and the spiral shape design of the spiral filter plate guides the waste gas to flow in a vortex state, which increases the residence time of the waste gas in the filter screen, which is conducive to the sedimentation and removal of particulate matter, and the surface of the spiral filter plate can be cleaned in real time by spraying water mist through a spray pipe, so as to maintain a good adsorption effect.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly relates to a casting waste gas collection and environmental protection device and a treatment method thereof. Background Art

[0002] A large amount of waste gas is generated during the casting process. These waste gases contain harmful substances such as dust, soot, sulfur dioxide, nitrogen oxides, etc. If not treated and directly discharged into the atmosphere, it will cause serious environmental pollution. Therefore, foundries usually need to install waste gas collection and treatment systems to purify these waste gases.

[0003] For example, the publication number is CN214862486U, and the name is a detachable casting fume purification device, including a horizontal bottom plate, bottom support feet, fixed support feet, a first purification cylinder, a second purification cylinder, a third purification cylinder, a ventilation duct, a rotating motor, a transmission shaft, a connecting fan blade, a waste liquid collection rack structure, a water liquid diversion rack structure, a waste filter rack structure, a waste gas introduction rack structure, and an exhaust duct. The bottom support feet are adhesively connected to the four corners of the lower part of the horizontal bottom plate; the fixed support feet are respectively bolted to the upper part of the horizontal bottom plate. In this application, the filter screen is embedded inside the sealing frame, which is beneficial to conveniently filter the water liquid permeating downward from the material guiding hopper during use, so as to be able to reuse the water liquid during use, thereby improving the environmental protection effect; the exhaust fan is arranged inside the exhaust hood, which is beneficial to conveniently extract the waste gas at a specified position by using the exhaust fan during use, and thus can increase the working efficiency during use.

[0004] However, the above waste gas collection uses a single pipeline to collect waste gas, and it is not possible to collect waste gas from different directions in a parallel manner. Moreover, during the treatment of casting waste gas, due to the relatively high temperature of the waste gas, if it is not cooled, it is easy to cause high-temperature deformation of the air filtration device, affecting the filtration effect. And the waste gas impurities adsorbed at high temperature are difficult to remove after cooling if not cleaned in time, thus affecting the subsequent filtration effect. Therefore, this application provides a casting waste gas collection and environmental protection device and a treatment method thereof to meet the requirements. Summary of the Invention

[0005] The purpose of this application is to provide a casting waste gas collection and environmental protection device and a treatment method thereof, which can effectively solve the problems raised in the above background art.

[0006] To achieve the above purpose, this application provides the following technical solution: A casting waste gas collection and environmental protection device, including a housing mechanism, a dust removal mechanism is arranged inside the housing mechanism, heat reduction mechanisms for cooling the casting waste gas are arranged on both sides of the housing mechanism, air supply mechanisms for accelerating the flow of waste gas are arranged on the opposite sides of the two heat reduction mechanisms, and a number of waste gas collection mechanisms are arranged at equal intervals on the bottom surfaces of the outer surfaces of the two air supply mechanisms;

[0007] The heat dissipation mechanism includes a number of hollow ribs distributed in an annular array. A number of filter plates are arranged on the outer surfaces of the hollow ribs at equal intervals, and a number of circular holes are arranged on the outer surfaces of the hollow ribs at equal intervals.

[0008] Among them, the air supply mechanism includes an outer tube. One end of the outer tube is provided with a blower. A dust separation net is arranged inside the blower. A number of inclined plates are arranged at equal intervals on the bottom of the inner cavity of the outer tube, and the inclined plates are in an arc shape.

[0009] Among them, the waste gas collection mechanism includes a housing. A casting device is arranged at the bottom of the inner cavity of the housing. A ventilation pipe is arranged on one side of the housing. A top pipe is arranged at the upper end of the housing, and the top pipe is the same as the inside of the inclined plate.

[0010] Among them, the heat dissipation mechanism includes a conical shell. The conical shell is fixedly installed at one end of the outer tube. A support frame is arranged on the inner wall of the conical shell. A shaft rod is rotatably installed inside the support frame. One end of the shaft rod is provided with a pulley. A drive motor is arranged on the outer surface of the conical shell, and a belt is sleeved on the outer surface of the output end of the drive motor and the pulley together.

[0011] One end of the shaft rod is connected with a ring frame, and a number of filter membranes are arranged at equal intervals inside the ring frame.

[0012] Among them, a guide ring is arranged on the inner wall of the conical shell and between the support frame and the ring frame. A water pipe is arranged on the outer surface of the guide ring. An outer ring is rotatably installed inside the guide ring. A number of first partition plates are arranged in an annular array inside the outer ring. A number of rotating blades are arranged in an annular array on the outer surface of the shaft rod. An inner shell is sleeved on the outer surfaces of the rotating blades. A number of leakage holes are arranged in an annular array on the inner wall of the inner shell.

[0013] The hollow ribs are fixedly installed between the outer surface of the inner shell and the inner wall of the outer ring, and the hollow ribs are communicated with the inside of the inner shell and the outer ring.

[0014] Among them, the outer shell mechanism includes a sleeve. Installation holes are arranged on both sides of the sleeve, and the conical shell is arranged in the installation holes. A water storage tank is arranged at the bottom of the sleeve. A leakage hole plate is arranged on the inner wall of the water storage tank. A top cover is arranged at the upper end of the sleeve. A second partition plate is arranged on the inner wall of the top cover. A number of spraying pipes are arranged in an annular array at the bottom of the second partition plate. A water pipe communicated with the inside of the spraying pipe is arranged at the upper end of the second partition plate, and one end of the water pipe penetrates through the top cover.

[0015] Among them, a conical air pipe is arranged in the middle of the upper end of the second partition plate. An exhaust pipe is arranged at the upper end of the conical air pipe. A load-bearing frame is arranged on the inner wall of the conical air pipe. A driving motor is arranged at the upper end of the load-bearing frame. A fan blade is arranged at the output end of the driving motor.

[0016] Among them, the dust removal mechanism includes a filter pipe. A central pipe is arranged at the upper end of the filter pipe. A plurality of spiral filter screen plates distributed in an annular array are arranged on the outer surface of the filter pipe. Plastic ribs are arranged at the upper ends of the plurality of spiral filter screen plates.

[0017] A treatment method using a casting waste gas collection and environmental protection device is as follows:

[0018] S1. When casting, the molten metal is poured into the casting device inside the waste gas collection mechanism. The waste gas discharged during the casting and cooling process of the molten metal inside the casting device will be sent into the air supply mechanism. Since the waste gas generated inside the waste gas collection mechanism flows upward due to high heat, and the air supply mechanism accelerates the extraction of the casting waste gas inside the waste gas collection mechanism into the heat reduction mechanism through Bernoulli's principle;

[0019] S2. When the waste gas enters the heat reduction mechanism, the heat reduction mechanism accelerates the extraction of the waste gas inside the air supply mechanism by rotation and also cools and removes impurities from the high-temperature waste gas. Moreover, after the heat reduction mechanism adsorbs the impurities in the waste gas, it can clean and remove them in real time, thereby ensuring subsequent waste gas treatment. And the two heat reduction mechanisms arranged on both sides of the housing mechanism are more suitable for the waste gas treatment of small casting parts;

[0020] S3. When the waste gas enters the inside of the housing mechanism through the heat reduction mechanism, the waste gas is quickly filtered by the dust removal mechanism. The arranged dust removal mechanism is in a vortex shape. The dust removal mechanism changes the flow path of the waste gas, increases the residence time of the waste gas inside the dust removal mechanism and the contact area with the dust removal mechanism, so that the waste gas can be filtered and discharged multiple times.

[0021] In summary, the technical effects and advantages of the present invention:

[0022] 1. The conical shells arranged in the present invention are located on both sides of the sleeve shell, which can collect waste gas from different directions. Moreover, the spiral filter screen plates are designed in a wave shape, increasing the contact area with the waste gas, improving the capture efficiency of particulate matter. And the relatively rough surface of the spiral filter screen plates helps the particulate matter in the waste gas to be adsorbed on its surface, improving the filtering effect. And the spiral shape design of the spiral filter screen plates guides the waste gas to flow in a vortex state, increasing the residence time of the waste gas in the filter screen, which is beneficial to the sedimentation and removal of particulate matter. With the cooperation of spraying water mist through the spraying pipe, the surface of the spiral filter screen plates can be cleaned in real time, maintaining a good adsorption effect. Moreover, the water mist is mixed with the particulate matter in the waste gas, which helps the condensation of particulate matter and improves the removal efficiency.

[0023] 2. The present invention accelerates the extraction of waste gas inside the outer pipe through the rotation of the rotating blades, improving the efficiency of waste gas treatment. The water pipe sprays water, enabling the water to enter the inside of the outer ring and pass through the hollow ribs into the inner shell, and then spray onto the rotating blades to cool the high-temperature waste gas. Moreover, the filter plate rotates along with the rotation of the hollow ribs, being able to fully contact the waste gas, increasing the contact area between the waste gas and the filter plate, quickly adsorbing impurities in the waste gas. By spraying water onto the rotating blades, the temperature of the waste gas can be reduced, facilitating the subsequent treatment steps. The water flowing out from the round holes on the hollow ribs can wash the waste gas impurities adsorbed on the surface of the filter plate, keeping the filter plate clean and improving the filtration efficiency. After being pushed by the filter plate, the waste gas will pass through the filter membrane, and the filter membrane can further adsorb larger particulate impurities in the waste gas, ensuring that the waste gas meets the emission standards.

[0024] 3. The present invention collects the high-temperature waste gas generated by the casting device through the housing, ensuring that the waste gas can be effectively introduced into the outer pipe. In addition to the waste gas rising naturally into the top pipe, part of the waste gas is also assisted to be introduced into the top pipe through the ventilation pipe, ensuring that the waste gas can be completely collected and sent into the outer pipe. Moreover, the special design of the inclined plate causes a difference in air flow velocity between its upper and lower parts, forming a certain pressure difference inside the outer pipe. The inclined plate makes the air outlet of the top pipe located at the lower part of the inclined plate. By utilizing the difference in air flow velocity between the upper and lower parts of the inclined plate, the waste gas can be effectively extracted through the gap between the inclined plates. And the inclined placement design of the inclined plate can prevent the air blown out from the outer pipe from flowing back into the top pipe, ensuring that the waste gas can smoothly flow from the top pipe into the outer pipe. The design of the inclined plate not only helps the smooth flow of the waste gas but also promotes the extraction of the waste gas by utilizing the difference in air flow velocity, improving the efficiency of waste gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a first - perspective three - dimensional structural schematic diagram of a casting waste gas collection and environmental protection device;

[0027] Figure 2 It is a second - perspective three - dimensional structural schematic diagram of a casting waste gas collection and environmental protection device;

[0028] Figure 3 It is a third - perspective three - dimensional structural schematic diagram of a casting waste gas collection and environmental protection device;

[0029] Figure 4Schematic diagram of the partial three-dimensional connection structure of an environmental protection device for collecting foundry waste gas;

[0030] Figure 5 Schematic diagram of the three-dimensional connection structure of the waste gas collection mechanism and the air supply mechanism;

[0031] Figure 6 Cross-sectional view of the three-dimensional connection structure of the air supply mechanism;

[0032] Figure 7 Cross-sectional view of the three-dimensional connection structure of the waste gas collection mechanism;

[0033] Figure 8 Schematic diagram of the three-dimensional connection structure of the heat reduction mechanism;

[0034] Figure 9 Cross-sectional view of the three-dimensional connection structure of the heat reduction mechanism;

[0035] Figure 10 Schematic diagram of the partial three-dimensional connection structure of the heat reduction mechanism;

[0036] Figure 11 Schematic diagram of the three-dimensional connection structure of the conical shell and the guide ring;

[0037] Figure 12 Schematic diagram of the three-dimensional connection structure of the ring frame and the filter membrane;

[0038] Figure 13 Schematic diagram of the partial three-dimensional structure of the heat reduction mechanism from the first perspective;

[0039] Figure 14 Schematic diagram of the partial three-dimensional structure of the heat reduction mechanism from the second perspective;

[0040] Figure 15 Schematic diagram of the three-dimensional connection structure of the outer ring;

[0041] Figure 16 Schematic diagram of the three-dimensional connection structure of the inner shell and the rotating blades;

[0042] Figure 17 Schematic diagram of the three-dimensional connection structure of the filter plate and the hollow ribs;

[0043] Figure 18 Schematic diagram of the three-dimensional connection structure of the outer shell mechanism;

[0044] Figure 19 Cross-sectional view of the three-dimensional connection structure of the outer shell mechanism;

[0045] Figure 20 Schematic diagram of the internal connection structure of the outer shell mechanism;

[0046] Figure 21 Schematic diagram of the partial three-dimensional connection structure of the outer shell mechanism;

[0047] Figure 22 Schematic diagram of the three-dimensional connection structure of the dust removal mechanism;

[0048] Figure 23 Cross-sectional view of the three-dimensional connection structure of the dust removal mechanism;

[0049] Figure 24 Schematic diagram of the three-dimensional connection structure of the spiral filter plate.

[0050] In the figure: 1. Exhaust gas collection mechanism; 11. Casting device; 12. Housing; 13. Vent pipe; 14. Top pipe; 2. Air supply mechanism; 21. Blower; 22. Outer pipe; 23. Inclined plate; 3. Heat reduction mechanism; 31. Cone shell; 32. Water pipe; 33. Driving motor; 34. Belt; 35. Pulley; 36. Support frame; 37. Filter plate; 38. Guide ring; 39. Ring frame; 311. Filter membrane; 312. Outer ring; 313. First partition; 314. Hollow rib; 315. Inner shell; 316. Shaft rod; 317. Rotary blade; 318. Leak hole; 319. Round hole; 4. Outer shell mechanism; 41. Water pipe; 42. Sheath; 43. Water storage tank; 44. Exhaust pipe; 45. Top cover; 46. Second partition; 47. Cone-shaped gas pipe; 48. Leak hole plate; 49. Spraying pipe; 411. Fan blade; 412. Driving motor; 413. Bearing frame; 5. Dust removal mechanism; 51. Spiral filter plate; 52. Shaping rib; 53. Central pipe; 54. Filter pipe. Specific implementation manners

[0051] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0052] Embodiment 1. Refer to Figures 1 to 24 A casting waste gas collection and environmental protection device shown in the figure, including an outer shell mechanism 4, a dust removal mechanism 5 is arranged inside the outer shell mechanism 4, heat reduction mechanisms 3 for cooling the casting waste gas are arranged on both sides of the outer shell mechanism 4, air supply mechanisms 2 for accelerating the flow of waste gas are arranged on the opposite sides of the two heat reduction mechanisms 3, and a plurality of exhaust gas collection mechanisms 1 are arranged at equal intervals on the bottom of the outer surfaces of the two air supply mechanisms 2;

[0053] It should be noted that when casting, the molten metal is poured into the casting device 11 inside the exhaust gas collection mechanism 1. During the process of casting and cooling the molten metal inside the casting device 11, the exhaust gas discharged will be sent into the air supply mechanism 2. Since the exhaust gas generated inside the exhaust gas collection mechanism 1 flows upward due to its high temperature, and the air supply mechanism 2 accelerates the extraction of the casting exhaust gas inside the exhaust gas collection mechanism 1 into the heat reduction mechanism 3 through the Bernoulli principle;

[0054] When the exhaust gas enters the heat reduction mechanism 3, the heat reduction mechanism 3 accelerates the extraction of the exhaust gas inside the air supply mechanism 2 by rotation and also cools and removes impurities from the high-temperature exhaust gas. Moreover, after the heat reduction mechanism 3 adsorbs the impurities in the exhaust gas, it can clean and remove them in real time, thus ensuring subsequent exhaust gas treatment. And the two heat reduction mechanisms 3 provided are respectively located on both sides of the housing mechanism 4, which is more suitable for the exhaust gas treatment of small castings;

[0055] When the exhaust gas enters the inside of the housing mechanism 4 through the heat reduction mechanism 3, the exhaust gas is quickly filtered by the dust removal mechanism 5. The dust removal mechanism 5 is in a vortex shape. The dust removal mechanism 5 changes the flow path of the exhaust gas to increase the residence time of the exhaust gas inside the dust removal mechanism 5 and the contact area with the dust removal mechanism 5, so that the exhaust gas can be filtered multiple times before being discharged.

[0056] The exhaust gas collection mechanism 1 includes a housing 12. A casting device 11 is provided at the bottom of the inner cavity of the housing 12. A ventilation pipe 13 is provided on one side of the housing 12. A top pipe 14 is provided at the upper end of the housing 12, and the inside of the top pipe 14 is the same as that of the inclined plate 23.

[0057] It should be noted that when casting, the molten metal is poured into the casting device 11. The casting device 11 is a casting equipment of the prior art. During the process of cooling and forming the molten metal in the casting device 11, high-temperature exhaust gas is generated. The high-temperature exhaust gas drifts upward and enters the housing 12 and then into the top pipe 14, and part of the exhaust gas will also be sent into the top pipe 14 through the ventilation pipe 13.

[0058] The air supply mechanism 2 includes an outer pipe 22. A blower 21 is provided at one end of the outer pipe 22. A dust separation net is provided inside the blower 21. A number of inclined plates 23 are provided at equal intervals at the bottom of the inner cavity of the outer pipe 22, and the inclined plates 23 are in an arc shape.

[0059] Among them, after the above-mentioned waste gas is sent into the jacking pipe 14, since the jacking pipe 14 is internally connected to the outer pipe 22, the waste gas entering the jacking pipe 14 will be sent into the outer pipe 22. The blower 21 rotates continuously to send air into the interior of the outer pipe 22. Since the bottom of the inner cavity of the outer pipe 22 is provided with an inclined plate 23 in a curved arc shape, the air blown by the blower 21 only flows above the inclined plate 23, resulting in different air flow rates between the lower and upper parts of the inclined plate 23. The air outlet of the jacking pipe 14 is located at the lower part of the inclined plate 23. Due to the different air flow rate differences in the outer pipe 22, the waste gas sent into the interior of the outer pipe 22 by the jacking pipe 14 can be extracted through the gaps between the inclined plates 23. The inclined plate 23 is arranged obliquely to prevent the air blown out of the outer pipe 22 from being backflowed into the jacking pipe 14.

[0060] Among them, the high-temperature waste gas generated by the casting device 11 is collected through the housing 12 to ensure that the waste gas can be effectively introduced into the outer pipe 22. In addition to the waste gas naturally rising and entering the jacking pipe 14, part of the waste gas is also assisted to be introduced into the jacking pipe 14 through the ventilation pipe 13 to ensure that the waste gas can be completely collected and sent into the outer pipe 22.

[0061] Moreover, the special design of the inclined plate 23 causes a difference in air flow rate between its upper and lower parts, forming a certain pressure difference inside the outer pipe 22. The inclined plate 23 makes the air outlet of the jacking pipe 14 located at the lower part of the inclined plate 23. By utilizing the difference in air flow rate between the upper and lower parts of the inclined plate 23, the waste gas can be effectively extracted through the gaps between the inclined plates 23.

[0062] And the inclined arrangement design of the inclined plate 23 can prevent the air blown out of the outer pipe 22 from flowing back into the jacking pipe 14, ensuring that the waste gas can smoothly flow from the jacking pipe 14 into the outer pipe 22. The design of the inclined plate 23 not only helps the smooth flow of the waste gas but also promotes the extraction of the waste gas by utilizing the difference in air flow rate, improving the efficiency of waste gas treatment.

[0063] Embodiment 2: As Figures 8 to 17 shown, the heat dissipation mechanism 3 includes a conical shell 31. The conical shell 31 is fixedly installed at one end of the outer pipe 22. A support frame 36 is provided on the inner wall of the conical shell 31. A shaft rod 316 is rotatably installed inside the support frame 36. One end of the shaft rod 316 is provided with a pulley 35. A belt 34 is sleeved on the output end of the driving motor 33 and the outer surface of the pulley 35 on the outer surface of the conical shell 31;

[0064] One end of the shaft rod 316 is connected to a ring frame 39. A plurality of filter membranes 311 are arranged at equal intervals inside the ring frame 39.

[0065] The heat dissipation mechanism 3 includes a number of hollow ribs 314 distributed in an annular array. A number of filter plates 37 are arranged at equal intervals on the outer surfaces of the hollow ribs 314, and a number of circular holes 319 are arranged at equal intervals on the outer surface of the hollow ribs 314.

[0066] It should be noted that when the waste gas is sent into the interior of the conical shell 31 through the outer pipe 22, the driving motor 33 drives the belt 34 to drive through the output end, and the belt 34 drives the pulley 35 to rotate. The pulley 35 drives the shaft rod 316 to rotate inside the support frame 36. The rotation of the shaft rod 316 drives the rotation of the rotating blade 317. The rotating blade 317 is a fan-shaped blade. When the rotating blade 317 rotates, it will also accelerate the extraction of the waste gas inside the outer pipe 22.

[0067] A guide ring 38 is arranged on the inner wall of the conical shell 31 between the support frame 36 and the ring frame 39. A water pipe 32 is arranged on the outer surface of the guide ring 38. An outer ring 312 is rotatably installed inside the guide ring 38. A number of first partitions 313 are arranged in an annular array inside the outer ring 312. A number of rotating blades 317 are arranged in an annular array on the outer surface of the shaft rod 316. An inner shell 315 is sleeved on the outer surfaces of the rotating blades 317 together. A number of leakage holes 318 are arranged in an annular array on the inner wall of the inner shell 315.

[0068] The hollow ribs 314 are fixedly installed between the outer surface of the inner shell 315 and the inner wall of the outer ring 312, and the hollow ribs 314 communicate with the interiors of the inner shell 315 and the outer ring 312.

[0069] Among them, when the rotating blade 317 rotates, it will also drive the inner shell 315 to rotate. The inner shell 315 drives the hollow ribs 314 to rotate, and the hollow ribs 314 drive the outer ring 312 to rotate. When the outer ring 312 rotates, it rotates inside the guide ring 38. The guide ring 38 is used to assist in supporting the rotation of the outer ring 312. Moreover, when the outer ring 312 rotates, the water pipe 32 will spray water into the interior of the outer ring 312. The arranged hollow ribs 314 communicate with the interior of the outer ring 312, and the water inlet of the arranged hollow ribs 314 is located between every two first partitions 313.

[0070] The arranged water pipe 32 is located above the guide ring 38. Therefore, when the outer ring 312 continuously rotates and rotates the hollow ribs 314 to the lower part of the water pipe 32, the water flow will flow into the inner shell 315 through the hollow ribs 314. When the hollow ribs 314 rotate, they will also drive the filter plates 37 to rotate, and the arrangement of the filter plates 37 and the hollow ribs 314 is Figure 13 and Figure 14The shape shown is such that when the hollow rib 314 drives the filter plate 37 to rotate, the filter plate 37 can come into full contact with the casting waste gas. Moreover, when the filter plate 37 rotates, it can also push the waste gas into the housing mechanism 4. After the filter plate 37 adsorbs the waste gas, the hollow rib 314 sprays water through the round holes 319 onto the rotating blades 317. The high-temperature waste gas in contact with the filter plate 37 can be adsorbed on the filter plate 37 and the high-temperature waste gas can also be cooled. And the water continuously sprayed by the hollow rib 314 through the round holes 319 can clean the waste gas impurities adsorbed on the surface of the filter plate 37, and the sewage from the cleaning will flow into the housing mechanism 4;

[0071] And after the waste gas is pushed by the filter plate 37, it will pass through the filter membrane 311, and the filter membrane 311 belongs to the filter net of the prior art. The filter membrane 311 can further adsorb the impurities of larger particles in the waste gas.

[0072] Among them, the rotation of the rotating blades 317 accelerates the extraction of the waste gas inside the outer pipe 22, improving the efficiency of waste gas treatment. The water pipe 32 sprays water so that the water can enter the inside of the outer ring 312 and enter the inner shell 315 through the hollow rib 314, and then be sprayed onto the rotating blades 317 to cool the high-temperature waste gas.

[0073] And the filter plate 37 rotates with the rotation of the hollow rib 314, can come into full contact with the waste gas, increasing the contact area between the waste gas and the filter plate, quickly adsorbing the impurities in the waste gas. By spraying water onto the rotating blades 317, the temperature of the waste gas can be reduced, facilitating the subsequent treatment steps.

[0074] And the water sprayed from the round holes 319 on the hollow rib 314 can clean the waste gas impurities adsorbed on the surface of the filter plate 37, keeping the filter plate clean and improving the filtration efficiency. After the waste gas is pushed by the filter plate 37, it will pass through the filter membrane 311. The filter membrane 311 can further adsorb the larger particle impurities in the waste gas to ensure that the waste gas meets the emission standards.

[0075] Example three: As Figures 18 to 24 shown, the housing mechanism 4 includes a sleeve 42. Installation holes are provided on both sides of the sleeve 42, and the conical shell 31 is arranged in the installation holes. A water storage tank 43 is provided at the bottom of the sleeve 42. A leaky hole plate 48 is provided on the inner wall of the water storage tank 43. A top cover 45 is provided at the upper end of the sleeve 42. A second partition plate 46 is provided on the inner wall of the top cover 45. A plurality of spray pipes 49 are provided at the bottom of the second partition plate 46 in a circular array distribution. A water pipe 41 communicating with the inside of the spray pipes 49 is provided at the upper end of the second partition plate 46, and one end of the water pipe 41 penetrates through the top cover 45.

[0076] The dust removal mechanism 5 includes a filter tube 54. A central tube 53 is provided at the upper end of the filter tube 54. A plurality of spiral filter plates 51 distributed in an annular array are provided on the outer surface of the filter tube 54. Plastic ribs 52 are provided at the upper ends of the plurality of spiral filter plates 51.

[0077] It should be noted that the casting waste gas will be sent into the sleeve 42 through the conical shell 31. The conical shell 31 is provided on both sides of the sleeve 42. Therefore, the sleeve 42 can collect waste gas from multiple directions for treatment. After the waste gas enters the interior of the sleeve 42, it first enters the spiral filter plate 51. Since the drive motor 412 provided inside the conical gas pipe 47 drives the fan blade 411 to rotate through the output shaft to extract the air inside the sleeve 42, the rotation of the fan blade 411 will extract the air inside the filter tube 54 through the central tube 53. The filter tube 54 is a filter screen of the prior art, and the filter tube 54 is designed to fit the shape of the spiral filter plate 51.

[0078] In the middle of the upper end of the second partition plate 46, a conical gas pipe 47 is provided. An exhaust pipe 44 is provided at the upper end of the conical gas pipe 47. A bearing frame 413 is provided on the inner wall of the conical gas pipe 47. A drive motor 412 is provided at the upper end of the bearing frame 413. A fan blade 411 is provided at the output end of the drive motor 412.

[0079] Therefore, when the fan blade 411 rotates to extract the waste gas inside the sleeve 42 through the central tube 53, the waste gas will enter the filter tube 54 through the guidance of the spiral shape design of the spiral filter plate 51. The spiral filter plate 51 is in a wavy shape, and a plurality of spiral filter plates 51 are coiled into Figure 22 the shape shown. Therefore, when the waste gas is guided by the spiral filter plate 51 into the filter tube 54, the flow direction of the waste gas is in a swirling state. Moreover, the surface of the spiral filter plate 51 is relatively rough, which can make the particles in the waste gas adsorb on the surface of the spiral filter plate 51. The wavy shape design of the spiral filter plate 51 can increase the contact area with the waste gas.

[0080] Moreover, when the spiral filter plate 51 guides the flow direction of the waste gas, the water pipe 41 injects water into the interior of the spray pipe 49, and the spray pipe 49 sprays water between each spiral filter plate 51. The spray pipe 49 is designed as Figure 20 shown. The spray pipe 49 is located at the gap between each spiral filter plate 51. Therefore, the spiral filter plate 51 guides the flow direction of the waste gas, and the spray pipe 49 sprays water mist from above to mix with the particles in the waste gas to filter the waste gas. Moreover, the water sprayed by the spray pipe 49 also cleans the surface of the spiral filter plate 51 in real time, so that the spiral filter plate 51 can maintain a good adsorption effect. The sewage for cleaning the spiral filter plate 51 will also flow into the bottom water storage tank 43. When the sewage in the water storage tank 43 is full, it can be discharged through the drain pipe.

[0081] Among them, the conical shells 31 are located on both sides of the sleeve shell 42 and can collect exhaust gas from different directions. Moreover, the spiral filter plate 51 is designed in a wavy shape, increasing the contact area with the exhaust gas, improving the capture efficiency of particulate matter. And the relatively rough surface of the spiral filter plate 51 helps the particulate matter in the exhaust gas to adsorb on its surface, improving the filtering effect.

[0082] Moreover, the spiral shape design of the spiral filter plate 51 guides the exhaust gas to flow in a swirling state, increasing the residence time of the exhaust gas in the filter, which is beneficial to the sedimentation and removal of particulate matter. With the cooperation of spraying water mist through the spraying pipe 49, the surface of the spiral filter plate 51 can be cleaned in real time, maintaining a good adsorption effect. And the water mist mixes with the particulate matter in the exhaust gas, helping the condensation of particulate matter and improving the removal efficiency.

[0083] A treatment method for a casting exhaust gas collection and environmental protection device is as follows: the specific casting exhaust gas collection and treatment method is as follows:

[0084] S1. When casting, the molten metal is poured into the casting device 11 inside the exhaust gas collection mechanism 1. The exhaust gas discharged during the casting and cooling process of the molten metal inside the casting device 11 will be sent into the air supply mechanism 2. Since the exhaust gas generated inside the exhaust gas collection mechanism 1 flows upward due to the high heat, and the air supply mechanism 2 accelerates the extraction of the casting exhaust gas inside the exhaust gas collection mechanism 1 into the heat reduction mechanism 3 through the Bernoulli principle;

[0085] Among them, by setting a suitable gas collection structure around the casting device 11, it can ensure that the exhaust gas is efficiently collected, avoiding the pollution problem caused by the direct emission of exhaust gas into the environment. The Bernoulli principle states that where the fluid velocity increases, the pressure of the fluid will decrease. By designing a reasonable air supply pipeline, the exhaust gas will accelerate when passing through the narrow part of the pipeline, thus forming a low-pressure area, further accelerating the flow of the exhaust gas and improving the exhaust gas extraction efficiency.

[0086] S2. When the exhaust gas enters the heat reduction mechanism 3, the heat reduction mechanism 3 rotates to accelerate the extraction of the exhaust gas inside the air supply mechanism 2 and at the same time cools and removes impurities from the high-temperature exhaust gas. Moreover, after the heat reduction mechanism 3 adsorbs the impurities in the exhaust gas, it can clean and remove them in real time, thus ensuring the subsequent exhaust gas treatment. And the two heat reduction mechanisms 3 are respectively located on both sides of the housing mechanism 4, which is more suitable for the exhaust gas treatment of small casting parts;

[0087] Among them, through the rotational action of the heat reduction mechanism 3, the temperature of the exhaust gas can be quickly reduced, the fine particles and harmful gases in the exhaust gas can be removed, and the adsorbed impurities can be cleaned and removed in real time, ensuring the continuous and efficient operation of the heat reduction mechanism 3, avoiding problems such as blockage, and reducing the maintenance frequency.

[0088] S3. After the waste gas enters the interior of the housing mechanism 4 through the heat reduction mechanism 3, the waste gas is quickly filtered by the dust removal mechanism 5. The provided dust removal mechanism 5 is in a vortex shape. The dust removal mechanism 5 changes the flow path of the waste gas to increase the residence time of the waste gas inside the dust removal mechanism 5 and the contact area with the dust removal mechanism 5, so that the waste gas can be discharged after multiple filtrations.

[0089] Among them, by changing the flow path of the waste gas, the residence time of the waste gas inside the dust removal mechanism 5 is made longer, improving the capture efficiency of particulate matter. The longer residence time helps heavier particulate matter to settle due to gravity, preventing them from being discharged with the airflow.

[0090] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A casting waste gas collection and environmental protection device, characterized in that: It comprises a shell mechanism (4), a dust removal mechanism (5) is arranged inside the shell mechanism (4), cooling mechanisms (3) for cooling casting waste gas are arranged on both sides of the shell mechanism (4), air supply mechanisms (2) for accelerating the flow of waste gas are arranged on opposite sides of the two cooling mechanisms (3), and a plurality of waste gas collection mechanisms (1) are arranged at equal intervals on the bottom of the outer surfaces of the two air supply mechanisms (2); The heat reduction mechanism (3) comprises a plurality of hollow ribs (314) distributed in a ring array, the outer surfaces of the plurality of hollow ribs (314) are each provided with a plurality of filter plates (37) distributed at equal intervals, and the outer surfaces of the hollow ribs (314) are provided with a plurality of circular holes (319) distributed at equal intervals; The heat reduction mechanism (3) comprises a cone shell (31), the cone shell (31) being fixedly mounted on one end of the outer tube (22), a support frame (36) being provided on the inner wall of the cone shell (31), a shaft (316) being rotatably mounted inside the support frame (36), a belt pulley (35) being provided at one end of the shaft (316), a drive motor (33) being provided on the outer surface of the cone shell (31), and a belt (34) being provided on the output end of the drive motor (33) and the outer surface of the belt pulley (35); One end of the shaft (316) is connected to a ring frame (39), and a plurality of filter membranes (311) distributed at equal intervals are arranged inside the ring frame (39); A guide ring (38) is provided on the inner wall of the cone shell (31) and between the support frame (36) and the ring frame (39); a water pipe (32) is provided on the outer surface of the guide ring (38); an outer ring (312) is rotatably mounted inside the guide ring (38); a plurality of first baffles (313) distributed in a ring array are provided inside the outer ring (312); a plurality of rotary blades (317) distributed in a ring array are provided on the outer surface of the shaft (316); an inner shell (315) is commonly sleeved on the outer surfaces of the plurality of rotary blades (317); and a plurality of leak holes (318) distributed in a ring array are provided on the inner wall of the inner shell (315); The hollow rib (314) is fixedly installed between the outer surface of the inner shell (315) and the inner wall of the outer ring (312), and the hollow rib (314) is in communication with the interior of the inner shell (315) and the outer ring (312).

2. The casting waste gas collection and environmental protection device according to claim 1 is characterized in that: The air supply mechanism (2) comprises an outer tube (22), a blower (21) is arranged at one end of the outer tube (22), a dust screen is arranged inside the blower (21), and a plurality of inclined plates (23) distributed at equal intervals are arranged at the bottom of the inner cavity of the outer tube (22), and the inclined plates (23) are in the shape of a curved arc.

3. The casting waste gas collection and environmental protection device according to claim 1 is characterized in that: The exhaust gas collection mechanism (1) comprises a housing (12), a casting device (11) is arranged at the bottom of the inner cavity of the housing (12), a ventilation pipe (13) is arranged on one side of the housing (12), and a top pipe (14) is arranged at the upper end of the housing (12), and the top pipe (14) is the same as the interior of the inclined plate (23).

4. The casting waste gas collection and environmental protection device according to claim 1 is characterized in that: The shell mechanism (4) comprises a casing (42), both sides of which are provided with mounting holes, and the cone shell (31) is arranged in the mounting holes, a water storage tank (43) is arranged at the bottom of the casing (42), an orifice plate (48) is arranged on the inner wall of the water storage tank (43), a top cover (45) is arranged at the upper end of the casing (42), a second partition (46) is arranged on the inner wall of the top cover (45), a plurality of spray pipes (49) distributed in a circular array are arranged at the bottom of the second partition (46), a water pipe (41) communicating with the inside of the spray pipe (49) is arranged at the upper end of the second partition (46), and one end of the water pipe (41) passes through the top cover (45).

5. The casting waste gas collection and environmental protection device according to claim 4 is characterized in that: A conical air pipe (47) is provided at the middle of the upper end of the second partition plate (46), an exhaust pipe (44) is provided at the upper end of the conical air pipe (47), a load-bearing frame (413) is provided on the inner wall of the conical air pipe (47), a driving motor (412) is provided at the upper end of the load-bearing frame (413), and a fan blade (411) is provided at the output end of the driving motor (412).

6. The casting waste gas collection and environmental protection device according to claim 1 is characterized in that: The dust removal mechanism (5) comprises a filter tube (54), the upper end of the filter tube (54) being provided with a central tube (53), the outer surface of the filter tube (54) being provided with a plurality of spiral filter screen plates (51) distributed in a ring array, and the upper ends of the plurality of spiral filter screen plates (51) being provided with shaping ribs (52).

7. A treatment method using the casting waste gas collection and environmental protection device according to any one of claims 1 to 6, characterized in that: The specific methods for collecting and treating casting waste gas are as follows: S1. During casting, the molten metal is poured into the casting device (11) inside the waste gas collection mechanism (1). The waste gas discharged during the casting and cooling process of the molten metal inside the casting device (11) is sent to the gas supply mechanism (2). The waste gas generated inside the waste gas collection mechanism (1) flows upward due to high heat, and the gas supply mechanism (2) accelerates the extraction of the casting waste gas inside the waste gas collection mechanism (1) and sends it to the heat reduction mechanism (3) through the Bernoulli principle. S2. When the waste gas enters the heat reduction mechanism (3), the heat reduction mechanism (3) accelerates the extraction of waste gas from the air supply mechanism (2) by rotating, and cools and removes impurities from the high-temperature waste gas at the same time. Moreover, the heat reduction mechanism (3) can clean and remove impurities in the waste gas in real time after absorbing them, thereby ensuring subsequent waste gas treatment. Moreover, the two heat reduction mechanisms (3) are respectively located on both sides of the shell mechanism (4), which is more in line with the waste gas treatment setting of small castings. S3. After the exhaust gas passes through the heat reduction mechanism (3) and enters the interior of the outer shell mechanism (4), the exhaust gas is quickly filtered through the dust removal mechanism (5), and the dust removal mechanism (5) is arranged in a vortex shape. The dust removal mechanism (5) changes the flow path of the exhaust gas, increases the residence time of the exhaust gas in the dust removal mechanism (5) and the contact area of ​​the dust removal mechanism (5), so that the exhaust gas can be discharged after multiple filtrations.

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