Casting waste gas collection environment-friendly device and treatment method thereof

Abstract

The invention discloses an environment-friendly casting waste gas collection device and a treatment method thereof, and relates to the technical field of waste gas treatment, the environment-friendly casting waste gas collection device comprises a shell mechanism, a dust removal mechanism is arranged in the shell mechanism, and heat reduction mechanisms for cooling casting waste gas are arranged on the two sides of the shell mechanism; the opposite sides of the two cooling mechanisms are each provided with an air supply mechanism used for accelerating waste gas circulation. The conical shells are located on the two sides of the sleeve shell, waste gas from different directions can be collected, the spiral filter screen plate is designed to be in a wave shape, the contact area with the waste gas is increased, the particulate matter capturing efficiency is improved, the spiral design of the spiral filter screen plate guides the waste gas to flow in a vortex state, and the particulate matter capturing efficiency is improved. The retention time of waste gas in the filter screen is prolonged, sedimentation and removal of particulate matters are facilitated, the surface of the spiral filter screen plate can be cleaned in real time through cooperation of spraying water mist by the spraying pipe, and a good adsorption effect is kept.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular 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, smoke, sulfur dioxide, nitrogen oxides, etc. If they are directly discharged into the atmosphere without treatment, they will cause serious pollution to the environment. 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, which includes a horizontal bottom plate, a bottom support leg, a fixed support leg, 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 frame structure, a water liquid guide frame structure, a waste material filter frame structure, a waste gas introduction frame structure and an exhaust pipe, wherein the bottom support leg is glued to the four corners of the lower part of the horizontal bottom plate; the fixed support leg is bolted to the upper part of the horizontal bottom plate. In this application, the filter screen is embedded in the inside of the sealing frame, which is conducive to filtering the water liquid that penetrates downward from the guide hopper when in use, so that the water liquid can be used for a second time when in use, thereby improving the environmental protection effect; the exhaust fan is arranged on the inner side of the exhaust hood, which is conducive to using the exhaust fan to extract the waste gas at the designated position when in use, thereby increasing the work efficiency when in use.

[0004] The above-mentioned waste gas collection uses a pipe to collect waste gas, and is unable to collect waste gas from different directions in parallel. Moreover, when treating the casting waste gas, the waste gas has a high temperature, and if it is not cooled, it is easy to cause high-temperature deformation of the filter device, affecting the filtering effect. In addition, the high-temperature adsorbed waste gas impurities are difficult to remove after cleaning and cooling if they are not cleaned in time, thereby affecting the subsequent filtering effect. Therefore, the present application provides a casting waste gas collection and environmental protection device and a treatment method thereof to meet the needs. 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-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a casting waste gas collection and environmental protection device, comprising a shell mechanism, a dust removal mechanism is arranged inside the shell mechanism, heat reduction mechanisms for cooling casting waste gas are arranged on both sides of the shell mechanism, air supply mechanisms for accelerating the flow of waste gas are arranged on opposite sides of the two heat reduction mechanisms, and a plurality of waste gas collection mechanisms are arranged at equal intervals on the bottom of the outer surfaces of the two air supply mechanisms; The heat reduction mechanism comprises a plurality of hollow ribs distributed in a circular array, the outer surfaces of the plurality of hollow ribs are provided with a plurality of filter plates distributed at equal intervals, and the outer surfaces of the hollow ribs are provided with a plurality of circular holes distributed at equal intervals.

[0007] The air supply mechanism comprises an outer tube, a hair dryer is arranged at one end of the outer tube, a dust screen is arranged inside the hair dryer, and a plurality of equally spaced inclined plates are arranged at the bottom of the inner cavity of the outer tube, and the inclined plates are in an arc shape.

[0008] Wherein, the exhaust gas collection mechanism includes a cover shell, a casting device is arranged at the bottom of the inner cavity of the cover shell, a ventilation pipe is arranged on one side of the cover shell, and a top pipe is arranged at the upper end of the cover shell, and the top pipe is the same as the inside of the inclined plate.

[0009] The heat reduction mechanism comprises a cone shell, which is fixedly mounted on one end of the outer tube, a support frame is provided on the inner wall of the cone shell, a shaft is rotatably mounted inside the support frame, a pulley is provided on one end of the shaft, a drive motor is provided on the outer surface of the cone shell, and a belt is provided on the output end of the drive motor and the outer surface of the pulley; One end of the shaft is connected with a ring frame, and a plurality of filter membranes distributed at equal intervals are arranged inside the ring frame.

[0010] A guide ring is arranged on the inner wall of the cone 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 mounted inside the guide ring, a plurality of first baffles distributed in a circular array are arranged inside the outer ring, a plurality of rotary blades distributed in a circular array are arranged on the outer surface of the shaft, an inner shell is commonly sheathed on the outer surfaces of the plurality of rotary blades, and a plurality of leakage holes distributed in a circular array are opened on the inner wall of the inner shell; The hollow rib is fixedly installed between the outer surface of the inner shell and the inner wall of the outer ring, and the hollow rib is communicated with the inner shell and the inner part of the outer ring.

[0011] Among them, the outer shell mechanism includes a sleeve shell, both sides of the sleeve shell are provided with mounting holes, and the cone shell is arranged in the mounting holes, the bottom of the sleeve shell is provided with a water storage tank, the inner wall of the water storage tank is provided with a leakage plate, the upper end of the sleeve shell is provided with a top cover, the inner wall of the top cover is provided with a second partition, the bottom of the second partition is provided with a plurality of spray pipes distributed in a circular array, the upper end of the second partition is provided with a water pipe connected with the inside of the spray pipe, and one end of the water pipe passes through the top cover.

[0012] A conical air pipe is arranged in the middle of the upper end of the second partition, 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, and a fan blade is arranged at the output end of the driving motor.

[0013] Wherein, the dust removal mechanism includes a filter tube, a central tube is arranged at the upper end of the filter tube, a plurality of spiral filter plates distributed in a circular array are arranged on the outer surface of the filter tube, and shaping ribs are arranged at the upper ends of the plurality of spiral filter plates.

[0014] A treatment method using a casting waste gas collection and environmental protection device, the specific casting waste gas collection and treatment method is as follows: S1. During 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 to the gas supply mechanism. The waste gas generated inside the waste gas collection mechanism flows upward due to the high heat, and the gas supply mechanism accelerates the extraction of the casting waste gas inside the waste gas collection mechanism through the Bernoulli principle and sends it to the heat reduction mechanism; S2. When the waste gas enters the heat reduction mechanism, the heat reduction mechanism accelerates the extraction of waste gas inside the air supply mechanism by rotation, and also cools and removes impurities from the high-temperature waste gas. Moreover, the heat reduction mechanism can clean and remove impurities in the waste gas in real time after absorbing them, thereby ensuring the subsequent waste gas treatment. Moreover, the two heat reduction mechanisms are respectively located on both sides of the shell mechanism, which is more suitable for the waste gas treatment setting of small castings. S3. After the exhaust gas passes through the heat reduction mechanism and enters the interior of the outer shell mechanism, the exhaust gas is quickly filtered through the dust removal mechanism, and the dust removal mechanism is set in a vortex shape. The dust removal mechanism changes the flow path of the exhaust gas, increases the residence time of the exhaust gas inside the dust removal mechanism and the contact area of ​​the dust removal mechanism, so that the exhaust gas can be discharged after multiple filtrations.

[0015] In summary, the technical effects and advantages of the present invention are as follows: 1. The conical shells provided in the present invention are located on both sides of the casing, and can collect exhaust gas from different directions. The spiral filter plate is designed in a wave shape, which increases the contact area with the exhaust gas and improves the capture efficiency of particulate matter. The spiral filter plate with a relatively rough surface is conducive to the adsorption of particulate matter in the exhaust gas on its surface, thereby improving the filtering effect. The spiral shape design of the spiral filter plate guides the exhaust gas to flow in a vortex state, thereby increasing the residence time of the exhaust gas in the filter, which is beneficial to the sedimentation and removal of particulate matter. The surface of the spiral filter plate can be cleaned in real time by spraying water mist through the spray pipe, thereby maintaining a good adsorption effect. Moreover, the water mist is mixed with the particulate matter in the exhaust gas, thereby condensing the particulate matter and improving the removal efficiency.

[0016] 2. The present invention accelerates the extraction of exhaust gas from the outer tube through the rotation of the rotary blades, thereby improving the efficiency of exhaust gas treatment. The water pipe sprays water, so that the water can enter the inner part of the outer ring and enter the inner shell through the hollow ribs, thereby being sprayed on the rotary blades to cool the high-temperature exhaust gas. The filter plate rotates with the rotation of the hollow ribs and can fully contact the exhaust gas, thereby increasing the contact area between the exhaust gas and the filter plate, and quickly adsorbing impurities in the exhaust gas. By spraying water on the rotary blades, the temperature of the exhaust gas can be reduced, which is convenient for subsequent treatment steps. The water sprayed from the circular holes on the hollow ribs can clean the exhaust gas impurities adsorbed on the surface of the filter plate, keep the filter plate clean, and improve the filtration efficiency. After being pushed through the filter plate, the exhaust gas will pass through the filter membrane, and the filter membrane can further adsorb larger particulate impurities in the exhaust gas to ensure that the exhaust gas meets the emission standards.

[0017] 3. The present invention collects high-temperature exhaust gas generated by the casting device through the cover shell to ensure that the exhaust gas can be effectively introduced into the outer pipe. In addition to the exhaust gas naturally rising into the top pipe, part of the exhaust gas is also introduced into the top pipe with the assistance of the ventilation pipe to ensure that the exhaust gas can be completely collected and sent into the outer pipe; and the special design of the inclined plate makes the air flow rate between the upper and lower parts different, forming a certain pressure difference inside the outer pipe. The existence of 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 rate between the upper and lower parts of the inclined plate, the exhaust 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 of the outer pipe from flowing back into the top pipe, ensuring that the exhaust gas can flow smoothly from the top pipe into the outer pipe. The design of the inclined plate not only contributes to the smooth flow of exhaust gas, but also promotes the extraction of exhaust gas by utilizing the difference in air flow rate, thereby improving the efficiency of exhaust gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a casting waste gas collection and environmental protection device from a first-person perspective; Figure 2 A schematic diagram of a second-view stereoscopic structure of a casting waste gas collection and environmental protection device; Figure 3 A schematic diagram of a third-person perspective structure of a casting waste gas collection and environmental protection device; Figure 4 It is a schematic diagram of a partial three-dimensional connection structure of a casting waste gas collection and environmental protection device; Figure 5It is a schematic diagram of the three-dimensional connection structure of the exhaust gas collection mechanism and the air supply mechanism; Figure 6 It is a cross-sectional view of the three-dimensional connection structure of the air supply mechanism; Figure 7 It is a cross-sectional view of the three-dimensional connection structure of the exhaust gas collection mechanism; Figure 8 It is a schematic diagram of the three-dimensional connection structure of the heat reduction mechanism; Fig. 9 It is a cross-sectional view of the three-dimensional connection structure of the heat reduction mechanism; Fig.10 It is a schematic diagram of the local three-dimensional connection structure of the heat reduction mechanism; Fig.11 It is a schematic diagram of the three-dimensional connection structure of the cone shell and the guide ring; Fig.12 It is a schematic diagram of the three-dimensional connection structure of the ring frame and the filter membrane; Fig.13 It is a partial first-person perspective three-dimensional structural schematic diagram of the heat reduction mechanism; Fig.14 It is a partial second-view stereoscopic structural schematic diagram of the heat reduction mechanism; Fig.15 Schematic diagram of the three-dimensional connection structure of the outer ring; Fig.16 It is a schematic diagram of the three-dimensional connection structure of the inner shell and the rotary blade; Fig.17 It is a schematic diagram of the three-dimensional connection structure of the filter plate and the hollow ribs; Fig.18 It is a schematic diagram of the three-dimensional connection structure of the shell mechanism; Fig.19 It is a cross-sectional view of the three-dimensional connection structure of the housing mechanism; Fig. 20 It is a schematic diagram of the internal connection structure of the shell mechanism; Fig.21 It is a schematic diagram of a partial three-dimensional connection structure of the shell mechanism; Fig. 22 It is a schematic diagram of the three-dimensional connection structure of the dust removal mechanism; Fig.23 It is a cross-sectional view of the three-dimensional connection structure of the dust removal mechanism; Fig.24 It is a schematic diagram of the three-dimensional connection structure of the spiral filter plate.

[0020] In the figure: 1. exhaust gas collection mechanism; 11. casting device; 12. cover shell; 13. ventilation 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 plate; 314. hollow rib; 315. Inner shell; 316. Shaft; 317. Rotary blade; 318. Leakage hole; 319. Circular hole; 4. Outer shell mechanism; 41. Water pipe; 42. Sleeve shell; 43. Water storage tank; 44. Exhaust pipe; 45. Top cover; 46. Second partition; 47. Conical air pipe; 48. Leakage hole plate; 49. Spray pipe; 411. Fan blade; 412. Drive motor; 413. Load-bearing frame; 5. Dust removal mechanism; 51. Spiral filter plate; 52. Shaping ribs; 53. Center tube; 54. Filter tube. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1, Reference Figures 1 to 24 The shown casting waste gas collection and environmental protection device 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 waste gas circulation are arranged on the opposite sides of the two cooling mechanisms 3, and a plurality of waste gas collection mechanisms 1 distributed at equal intervals are arranged on the bottom of the outer surfaces of the two air supply mechanisms 2; It is worth noting that during casting, the molten metal is poured into the casting device 11 inside the waste gas collection mechanism 1, and the waste gas discharged during the casting and cooling process of the molten metal inside the casting device 11 will be sent to the gas supply mechanism 2, because 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; When the waste gas enters the heat reduction mechanism 3, the heat reduction mechanism 3 accelerates the extraction of waste gas inside the air supply mechanism 2 by rotating, and also cools and removes impurities from the high-temperature waste gas. Moreover, the heat reduction mechanism 3 can clean and remove impurities in the waste gas in real time after absorbing them, thereby ensuring the subsequent waste gas treatment. Moreover, the two heat reduction mechanisms 3 are respectively located on both sides of the shell mechanism 4, which further complies with the waste gas treatment setting of small castings. When 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 set 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 inside 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.

[0023] The exhaust gas collecting 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 , 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 .

[0024] It is worth noting that during casting, the molten metal is poured into the casting device 11, and the casting device 11 belongs to the casting equipment of the prior art. During the cooling and molding process of the molten metal in the casting device 11, high-temperature exhaust gas is generated. The high-temperature exhaust gas floats upward into the cover 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.

[0025] The air supply mechanism 2 includes an outer tube 22, one end of which is provided with a blower 21, the interior of the blower 21 is provided with a dust screen, and the bottom of the inner cavity of the outer tube 22 is provided with a plurality of equally spaced inclined plates 23, and the inclined plates 23 are in an arc shape.

[0026] Among them, after the above-mentioned exhaust gas is sent into the top pipe 14, since the top pipe 14 is connected with the inside of the outer pipe 22, the exhaust gas entering the top pipe 14 will be sent into the outer pipe 22, and the hair dryer 21 rotates to continuously send air to the inside of the outer pipe 22. Because the bottom of the inner cavity of the outer pipe 22 is provided with an arc-shaped inclined plate 23, the wind blown out by the hair dryer 21 only circulates in the upper part of the inclined plate 23, resulting in different air flow rates between the lower and upper parts of the inclined plate 23, and the air outlet of the top pipe 14 is located at the lower part of the inclined plate 23. Due to the different air flow rate difference in the outer pipe 22, the exhaust gas sent into the inner part of the outer pipe 22 by the top pipe 14 can be extracted through the gap between the inclined plates 23, and the inclined plate 23 is arranged to be tilted to prevent the air blown out of the outer pipe 22 from being backflowed into the top pipe 14.

[0027] Among them, the high-temperature exhaust gas generated by the casting device 11 is collected by the cover 12 to ensure that the exhaust gas can be effectively introduced into the outer pipe 22. In addition to the exhaust gas naturally rising into the top pipe 14, part of the exhaust gas is also assisted by the ventilation pipe 13 to introduce the top pipe 14 to ensure that the exhaust gas can be completely collected and sent into the outer pipe 22.

[0028] Moreover, the special design of the inclined plate 23 makes the air flow rate between the upper and lower parts different, forming a certain pressure difference inside the outer tube 22. The existence of the inclined plate 23 makes the air outlet of the top 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 exhaust gas can be effectively extracted through the gap between the inclined plates 23.

[0029] In addition, the inclined design of the inclined plate 23 can prevent the air blown out of the outer pipe 22 from flowing back into the top pipe 14, ensuring that the exhaust gas can flow smoothly from the top pipe 14 into the outer pipe 22. The design of the inclined plate 23 not only contributes to the smooth flow of the exhaust gas, but also utilizes the difference in air flow rate to promote the extraction of the exhaust gas, thereby improving the efficiency of exhaust gas treatment.

[0030] Embodiment 2: Figures 8 to 17 The heat reduction mechanism 3 shown includes a cone shell 31, which is fixedly mounted at one end of the outer tube 22. A support frame 36 is provided on the inner wall of the cone shell 31. A shaft 316 is rotatably mounted inside the support frame 36. A pulley 35 is provided at one end of the shaft 316. A drive motor 33 is provided on the outer surface of the cone shell 31. A belt 34 is provided together with the output end of the drive motor 33 and the outer surface of the 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 .

[0031] The heat reducing mechanism 3 comprises a plurality of hollow ribs 314 distributed in a circular array, the outer surfaces of the plurality of hollow ribs 314 are 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.

[0032] It is worth noting that, after the exhaust gas is sent into the interior of the cone shell 31 through the outer tube 22, the driving motor 33 drives the belt 34 through the output end, and the belt 34 drives the pulley 35 to rotate, and the pulley 35 drives the shaft 316 to rotate inside the support frame 36, and the rotation of the shaft 316 drives the rotary blade 317 to rotate, and the rotary blade 317 is a fan-shaped blade. When the rotary blade 317 rotates, it will also accelerate the extraction of the exhaust gas inside the outer tube 22; 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 installed inside the guide ring 38. A plurality of first baffles 313 distributed in an annular array are provided inside the outer ring 312. A plurality of rotary blades 317 distributed in an annular 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. A plurality of leak holes 318 distributed in an annular array are opened 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 communicated with the inner shell 315 and the inner wall of the outer ring 312 .

[0033] When the rotating blade 317 rotates, the inner shell 315 is driven to rotate, and the inner shell 315 drives the hollow rib 314 to rotate, and the hollow rib 314 drives 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. When the outer ring 312 rotates, the water pipe 32 sprays water into the inner part of the outer ring 312, and the hollow rib 314 is connected to the inner part of the outer ring 312, and the water inlet of the hollow rib 314 is located between every two first partitions 313. The water pipe 32 is located at the upper part of the guide ring 38, so when the outer ring 312 continues to rotate to rotate the hollow rib 314 to the lower part of the water pipe 32, the water will flow into the inner shell 315 through the hollow rib 314. When the hollow rib 314 rotates, it will also drive the filter plate 37 to rotate, and the arrangement of the filter plate 37 and the hollow rib 314 is Fig.13 and Fig.14 As shown in the shape, when the hollow ribs 314 drive the filter plate 37 to rotate, the filter plate 37 can fully contact with the casting waste gas, and the filter plate 37 can also push the waste gas into the shell mechanism 4 when it rotates, and after the filter plate 37 absorbs the waste gas, the hollow ribs 314 spray water through the circular holes 319 to spray on the rotary blades 317, and the high-temperature waste gas in contact with the filter plate 37 can be absorbed on the filter plate 37 and can also cool the high-temperature waste gas, and the hollow ribs 314 continuously spray water through the circular holes 319 to clean the waste gas impurities adsorbed on the surface of the filter plate 37, and the cleaned sewage will flow into the shell mechanism 4; When the exhaust gas is pushed through 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 absorb the larger particles of impurities in the exhaust gas.

[0034] The rotation of the rotary blades 317 accelerates the extraction of exhaust gas from the outer tube 22, thereby improving the efficiency of exhaust gas treatment. The water pipe 32 sprays water, allowing the water to enter the outer ring 312 and enter the inner shell 315 through the hollow ribs 314, thereby spraying on the rotary blades 317 to cool the high-temperature exhaust gas.

[0035] In addition, the filter plate 37 rotates with the rotation of the hollow ribs 314, and can fully contact the exhaust gas, thereby increasing the contact area between the exhaust gas and the filter plate, quickly absorbing impurities in the exhaust gas, and spraying water on the rotary blades 317 to reduce the temperature of the exhaust gas, thereby facilitating subsequent processing steps.

[0036] The water flow sprayed from the circular holes 319 on the hollow ribs 314 can clean the exhaust gas impurities adsorbed on the surface of the filter plate 37, keep the filter plate clean, and improve the filtering efficiency. After the exhaust gas is pushed through the filter plate 37, it will pass through the filter membrane 311. The filter membrane 311 can further adsorb larger particulate impurities in the exhaust gas to ensure that the exhaust gas meets the emission standards.

[0037] Embodiment 3: Figures 18 to 24 The shell mechanism 4 shown includes a sleeve 42, both sides of which are provided with mounting holes, and the conical shell 31 is arranged in the mounting holes, a water storage tank 43 is arranged at the bottom of the sleeve 42, and a leak 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 sleeve 42, and a second partition 46 is arranged on the inner wall of the top cover 45, and a plurality of spray pipes 49 distributed in a circular array are arranged at the bottom of the second partition 46, and a water pipe 41 connected to 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.

[0038] 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 a circular array are provided on the outer surface of the filter tube 54 , and shaping ribs 52 are provided at the upper ends of the plurality of spiral filter plates 51 .

[0039] It is worth noting that the casting waste gas will be sent into the casing 42 through the cone shell 31, and the cone shell 31 is located on both sides of the casing 42, so the casing 42 is set to collect waste gas from multiple directions for treatment. After the waste gas enters the interior of the casing 42, it first enters the spiral filter plate 51. Because the driving motor 412 set inside the cone air pipe 47 drives the fan blade 411 to rotate through the output shaft to extract the air inside the casing 42, the rotation of the fan blade 411 will extract the air inside the filter tube 54 through the central tube 53, and the filter tube 54 is a filter screen of the prior art, and the setting of the filter tube 54 fits the shape design of the spiral filter plate 51. A conical air pipe 47 is provided in the middle of the upper end of the second partition 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.

[0040] Therefore, when the fan blade 411 rotates through the central tube 53 to extract the exhaust gas inside the casing 42, the exhaust gas will be guided into the filter tube 54 through the spiral shape of the spiral filter plate 51, and the spiral filter plate 51 is in a wave shape, and multiple spiral filter plates 51 are arranged in a spiral shape. Fig. 22As shown in the shape, when the exhaust gas is guided by the spiral filter plate 51 into the filter tube 54, the exhaust gas flows in a vortex state, and the surface of the spiral filter plate 51 is relatively rough, which can allow particles in the exhaust gas to be adsorbed on the surface of the spiral filter plate 51, and the wavy shape of the spiral filter plate 51 can increase the contact area with the exhaust gas; When the spiral filter plate 51 guides the exhaust gas flow, the water pipe 41 injects water into the interior of the spray pipe 49, and the spray pipe 49 sprays the water between each spiral filter plate 51. Fig. 20 As shown, the spray pipe 49 is located in the gap between each spiral filter plate 51, so the spiral filter plate 51 guides the flow of the exhaust gas and the spray pipe 49 sprays water mist from the top to mix with the particles in the exhaust gas to filter the exhaust gas, and 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, and the sewage that cleans the spiral filter plate 51 will also flow into the water storage tank 43 at the bottom. When the sewage inside the water storage tank 43 is full, it can be discharged through the drain pipe.

[0041] Among them, the cone shell 31 is located on both sides of the sleeve shell 42, which can collect exhaust gas from different directions, and the spiral filter plate 51 is designed in a wave shape, which increases the contact area with the exhaust gas and improves the capture efficiency of particulate matter. The spiral filter plate 51 with a relatively rough surface helps the particulate matter in the exhaust gas to be adsorbed on its surface, thereby improving the filtering effect.

[0042] Moreover, the spiral shape design of the spiral filter plate 51 guides the exhaust gas to flow in a vortex state, which increases the residence time of the exhaust gas in the filter, which is beneficial to the sedimentation and removal of particulate matter. By spraying water mist through the spray pipe 49, the surface of the spiral filter plate 51 can be cleaned in real time to maintain a good adsorption effect. Moreover, the water mist is mixed with the particulate matter in the exhaust gas, which helps to condense the particulate matter and improves the removal efficiency.

[0043] A treatment method using a casting waste gas collection and environmental protection device, the specific casting waste gas collection and treatment method is 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 will be 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. Among them, by setting up a suitable gas collecting structure around the casting device 11, it can be ensured that the exhaust gas is efficiently collected, avoiding the pollution problem caused by the direct discharge of the exhaust gas into the environment. The Bernoulli principle points out that where the fluid velocity increases, the fluid pressure will decrease. By designing a reasonable air supply pipeline, the exhaust gas speed will be accelerated when passing through the narrow part of the pipeline, thereby forming a low-pressure area, thereby accelerating the flow of the exhaust gas and improving the exhaust gas extraction efficiency.

[0044] S2. When the waste gas enters the heat reduction mechanism 3, the heat reduction mechanism 3 accelerates the extraction of waste gas inside the air supply mechanism 2 by rotation, and also cools and removes impurities from the high-temperature waste gas. Moreover, the heat reduction mechanism 3 can clean and remove impurities in the waste gas in real time after absorbing them, thereby ensuring the subsequent waste gas treatment. Moreover, the two heat reduction mechanisms 3 are respectively located on both sides of the shell mechanism 4, which further complies with the waste gas treatment setting of small castings. Among them, through the rotation of the heat reduction mechanism 3, the temperature of the exhaust gas can be quickly reduced, fine particles and harmful gases in the exhaust gas can be removed, and adsorbed impurities can be cleaned and removed in real time, ensuring the continuous and efficient operation of the heat reduction mechanism 3, avoiding the occurrence of problems such as blockage, and reducing the maintenance frequency.

[0045] 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 set 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 inside 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.

[0046] Among them, by changing the flow path of the exhaust gas, the exhaust gas stays longer inside the dust removal mechanism 5, thereby improving the capture efficiency of particulate matter. A longer residence time helps heavier particulate matter settle due to gravity, preventing them from being discharged along with the airflow.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in 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.

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 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 rod (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).

5. The casting waste gas collection and environmental protection device according to claim 4 is characterized in that: 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).

6. 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).

7. The casting waste gas collection and environmental protection device according to claim 6 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).

8. 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).

9. A method for collecting and environmentally protecting foundry waste gas adopts the foundry waste gas collection and environmental protection device according to any one of claims 1 to 8, 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 also cools and removes impurities from the high-temperature waste gas. 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 further complies 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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