CN117582741A - Waste gas treatment system based on casting equipment production usefulness - Google Patents
Waste gas treatment system based on casting equipment production usefulness Download PDFInfo
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- CN117582741A CN117582741A CN202311604744.XA CN202311604744A CN117582741A CN 117582741 A CN117582741 A CN 117582741A CN 202311604744 A CN202311604744 A CN 202311604744A CN 117582741 A CN117582741 A CN 117582741A
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- waste gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D45/00—Equipment for casting, not otherwise provided for
- B22D45/005—Evacuation of fumes, dust or waste gases during manipulations in the foundry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses an exhaust gas treatment system based on casting equipment production, and belongs to the technical field of metal casting. The waste gas treatment system comprises a casting trolley, a crane is arranged in the casting trolley, a primary treatment device is arranged on the casting trolley, a secondary treatment device is arranged on one side of the casting trolley, and the secondary treatment device is in sliding connection with the workbench; the waste gas treatment equipment is provided with a first waste gas pipe and a second waste gas pipe, the first waste gas pipe is provided with a plurality of first interfaces, the first interfaces are connected with the primary treatment device through connecting pipes, valve plates are arranged in the first interfaces, and the first interfaces are connected with the connecting pipes through connecting structures; the second exhaust pipe is provided with a second interface which is connected with the secondary treatment device. The invention adopts the waste gas treatment system based on the production of casting equipment, and can solve the problems that the existing waste gas treatment device has poor waste gas absorption effect and high-temperature metal liquid drops influence the normal use of the waste gas treatment device.
Description
Technical Field
The invention relates to the technical field of metal casting, in particular to an exhaust gas treatment system for production based on casting equipment.
Background
In the sand casting process, molten steel which is smelted needs to be cast in a sand mold through a ladle, so that a required casting structure is obtained. Because resin sand is used in the sand casting process, the resin sand is influenced by high-temperature molten steel, organic waste gas can be released, and the waste gas contains a large amount of dust, and if the waste gas is directly discharged into the atmosphere, the pollution to the atmosphere can be caused. It is therefore necessary to treat with exhaust gases generated during the casting process.
The existing waste gas treatment device in the casting process is generally fixed, waste gas absorption needs to be carried out at a fixed place, the waste gas treatment device is only suitable for waste gas treatment in the casting process of a small amount of sand boxes, and the waste gas absorption effect is poor for casting of a large amount of sand boxes. In addition, high-temperature flue gas can be generated in the casting process, and the flue gas often contains high-temperature metal liquid drops, so that the high-temperature metal liquid drops enter the waste gas treatment device to cause damage to electrical elements, and the normal use of the waste gas treatment device is affected.
Disclosure of Invention
The invention aims to provide an exhaust gas treatment system based on casting equipment production, which solves the problems that the existing exhaust gas treatment device is poor in exhaust gas absorption effect and high-temperature metal liquid drops influence the normal use of the exhaust gas treatment device.
In order to achieve the above purpose, the invention provides an exhaust gas treatment system based on casting equipment production, which comprises a workbench for placing a sand box, wherein a casting trolley is arranged on the workbench in a sliding manner, a crane for lifting molten metal is arranged in the casting trolley, a primary treatment device is arranged on the casting trolley, a secondary treatment device is arranged on one side of the casting trolley, and the secondary treatment device is connected with the workbench in a sliding manner; the waste gas treatment equipment is provided with a first waste gas pipe and a second waste gas pipe, the first waste gas pipe is provided with a plurality of first interfaces, the first interfaces are connected with the primary treatment device through connecting pipes, valve plates for controlling the first interfaces to be closed are arranged in the first interfaces, and the first interfaces are connected with the connecting pipes through connecting structures; the second exhaust pipe is provided with a second interface which is connected with the secondary treatment device.
Preferably, a first guide rail is arranged on the workbench along the length direction of the workbench, a first guide groove matched with the first guide rail is arranged at the lower part of the casting trolley, the first guide groove is sleeved outside the first guide rail and is in sliding connection with the first guide rail, first motors are arranged on two sides of the casting trolley, a transmission gear is arranged on a transmission shaft of each first motor and is meshed with a rack arranged on the workbench for transmission, and a through hole for the transmission shaft to pass through is formed in the side wall of the casting trolley; the workbench is provided with a positioning groove for placing the sand box.
Preferably, the primary treatment device comprises a box body, the box body is arranged at the top of the casting trolley, one end of the box body is communicated with an air chamber arranged at the top of the casting trolley through an air inlet pipe, an air inlet plate is arranged at the bottom of the air chamber, a plurality of air inlet holes are formed in the air inlet plate, the aperture of each air inlet hole is gradually increased in the direction from being close to the air inlet pipe to being far away from the air inlet pipe, an arc-shaped guide plate is arranged at the corner of the air inlet pipe, an air outlet pipe is arranged at the other end of the box body, and the air outlet pipe is connected with the first interface through a connecting pipe; the inside of box has set gradually cooling body, subsides mechanism and acceleration mechanism from intake pipe to outlet duct direction, and the bottom of box is provided with the dust exhaust pipe, and the dust exhaust pipe is located cooling body's below and is connected with subsides mechanism, and the export of dust exhaust pipe is located the casting dolly.
Preferably, the cooling mechanism comprises a cold rod, one end of the cold rod is connected with an external refrigerator through a rotary joint, a plurality of stirring rods are uniformly arranged on the cold rod, the cold rod is rotationally connected with a fixed plate, the fixed plate is fixed on the inner wall of the box body, a through hole for an air inlet pipe to pass through is formed in the fixed plate, a wind shield is arranged at the outlet of the air inlet pipe, the wind shield is fixed on the fixed plate, a transmission mechanism for driving the cold rod to rotate is arranged on the fixed plate, and the transmission mechanism is positioned in a closed transmission chamber defined by the fixed plate and the end of the box body.
Preferably, the transmission mechanism comprises a rotating ring, the rotating ring is coaxial with an outlet of the air inlet pipe, the rotating ring is rotationally connected with a fixed plate, an outer gear ring is arranged on the outer side face of the rotating ring, an inner gear ring is arranged on the inner side face of the rotating ring, a driving gear meshed with the outer gear ring is rotationally arranged on the fixed plate, the driving gear is connected with a second motor through a speed reducer, a plurality of auxiliary gears meshed with the outer gear ring are rotationally arranged on the fixed plate, a driven gear is arranged at one end of the cold rod, which is positioned in the transmission chamber, and the driven gear is meshed with the inner gear ring.
Preferably, the sedimentation mechanism comprises two clapboards vertically arranged in the box body, an upper plate and a lower plate are obliquely arranged between the two clapboards, an exhaust gas inlet is arranged on the clapboard close to the cooling mechanism, a filter screen is arranged at the exhaust gas outlet of the other clapboard, and the filter screen is positioned between the upper plate and the lower plate; a plurality of inclined guide plates are arranged between the upper plate and the lower plate, and staggered air passing channels are arranged between the guide plates and the partition plates; a plurality of baffles are arranged on the lower surfaces of the guide plate and the upper plate;
the accelerating mechanism comprises a first taper pipe and a second taper pipe, the first taper pipe is connected with the second taper pipe through a straight pipe, the end head of the first taper pipe is fixed on the partition plate and communicated with the waste gas outlet, and the end head of the second taper pipe is fixed on the inner wall of the box body and communicated with the air outlet pipe.
Preferably, the connecting pipe includes the notch cuttype body, and the body is close to the one end of outlet duct and is provided with the bore and reduces the air inlet gradually, is provided with rebound structure between body and the outlet duct, rebound structure includes guide arm and sleeve, and the guide arm inserts in the sleeve and with sleeve sliding connection, and the one end of guide arm is fixed on the mounting panel that the body outside set up, and the sleeve is fixed on the end of box, is provided with on the sleeve and makes the guide arm pass telescopic through-hole, is provided with the limiting plate on the one end that the guide arm is located the sleeve inside, is provided with the spout on the telescopic inner wall, is provided with the slider with spout looks adaptation on the limiting plate, the slider is located the spout and with spout sliding connection, is provided with first spring between mounting panel and the sleeve, and first spring housing is established in the outside of guide arm.
Preferably, a first sealing structure is arranged between the air outlet pipe and the pipe body, the first sealing structure comprises an annular first sealing plate and an annular second sealing plate, the first sealing plate is fixed on the air outlet pipe, the second sealing plate is fixed on the pipe body, one side of the first sealing plate, which faces the second sealing plate, is provided with an annular first sealing plate, the first sealing plate is connected with the first sealing plate through a second spring, one side, which faces the first sealing plate, is provided with an annular second sealing plate, and the second sealing plate is lapped with the first sealing plate.
Preferably, the connecting structure comprises an annular electromagnet, the electromagnet is fixedly arranged on the inner wall of the first interface, a permanent magnet is arranged on the end head of the pipe body, and an infrared sensor is arranged between the pipe body and the permanent magnet; a second sealing structure is arranged between the first interface end head and the tank body; the second sealing structure comprises an annular air cavity, the air cavity is fixed on the end head of the first connector, one side of the air cavity, which is close to the pipe body, is provided with an arc-shaped elastic membrane for sealing the air cavity, and the outer wall of the pipe body is provided with an annular groove for clamping the elastic membrane; an air charging port is arranged on the air cavity and connected with an external air pump, and an electromagnetic valve is arranged at the air charging port.
Preferably, the secondary treatment device comprises a fixing seat, the fixing seat is fixedly arranged at one end of the workbench, a dust hood is arranged at one end of the fixing seat and connected with the second interface, a U-shaped protective cover is fixedly arranged at the opening end of the fixing seat, a plurality of U-shaped supporting plates are uniformly arranged on the protective cover, a folding and unfolding mechanism for folding and unfolding the protective cover is arranged on the protective cover, the folding and unfolding mechanism comprises a plurality of folding and unfolding units, each folding and unfolding unit comprises a first connecting rod and a second connecting rod which are arranged in a crossing manner, the middle parts of the first connecting rod and the second connecting rod are hinged with the supporting plates through pin shafts, and the first connecting rod and the second connecting rod between the adjacent folding and unfolding units are hinged; one end of the protective cover, which is close to the casting trolley, is provided with a rolling door, a second guide rail is arranged on the workbench, and a third motor for driving the protective cover to slide on the second guide rail is arranged on the supporting plate.
The waste gas treatment system based on casting equipment production has the advantages and positive effects that:
1. set up the casting dolly on the workstation, set up primary treatment device on the casting dolly, carry out preliminary treatment to the flue gas of high temperature through primary treatment device, set up exhaust treatment device in workstation one side, carry out final processing to the flue gas through exhaust treatment device, improved the treatment effect of waste gas.
2. One side of the casting trolley is provided with a secondary treatment device, a protective cover of the secondary treatment device is covered on the workbench, flue gas overflowing the casting trolley and flue gas generated in the casting process and in the cooling process of the sand box are collected, and the collection effect and the treatment effect of the flue gas are improved.
3. The cold rod is arranged in the box body of the primary treatment device, the temperature of the high-temperature flue gas is reduced through the cold rod, high-temperature metal liquid drops in the waste gas are promoted to solidify and settle, and the damage to electrical elements caused by the fact that the high-temperature metal liquid drops enter into the waste gas treatment equipment is avoided. The baffle is arranged on the guide plate in the box body, so that the sedimentation effect of smoke dust in the waste gas is improved.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an exhaust treatment system for casting equipment production according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of an exhaust treatment system for use in casting equipment production according to the present invention;
FIG. 3 is a schematic illustration of a casting trolley based on an embodiment of an exhaust treatment system for use in the production of casting equipment in accordance with the present invention;
FIG. 4 is an enlarged view of A in FIG. 3;
FIG. 5 is a schematic view of a dust removal box structure of an embodiment of an exhaust gas treatment system for casting equipment production according to the present invention;
FIG. 6 is a schematic diagram of a transmission mechanism of an embodiment of an exhaust treatment system for use in casting equipment production according to the present invention;
FIG. 7 is a schematic view showing a partial structure of an air outlet pipe of an embodiment of an exhaust gas treatment system for casting equipment production according to the present invention;
FIG. 8 is an enlarged view of B in FIG. 7;
FIG. 9 is a schematic diagram showing a connection structure between an air outlet pipe and a first interface of an embodiment of an exhaust gas treatment system for production of casting equipment according to the present invention.
Reference numerals
1. A work table; 11. a first guide rail; 12. a second guide rail; 13. a positioning groove;
2. casting a trolley; 21. a first guide groove; 22. a first motor; 23. a transmission gear; 24. a rack; 25. a transmission shaft; 26. a crane;
3. a primary treatment device; 31. a case; 32. an air inlet pipe; 33. an air outlet pipe; 34. a deflector; 35. an air inlet plate; 36. an air inlet hole; 37. a gas chamber; 38. a dust exhaust pipe; 39. a fixing plate; 310. a cold bar; 311. a stirring rod; 312. a wind deflector; 313. a partition plate; 314. a filter screen; 315. an upper plate; 316. a lower plate; 317. a guide plate; 318. a baffle; 319. a first cone; 320. a straight pipe; 321. a second taper pipe; 322. a transmission chamber; 323. a second motor; 324. a speed reducer; 325. a drive gear; 326. a rotating ring; 327. an outer ring gear; 328. an inner gear ring; 329. a driven gear; 330. an auxiliary gear;
4. a secondary treatment device; 41. a fixing seat; 42. a protective cover; 43. a support plate; 44. a first link; 45. a second link; 46. a third motor; 47. a roller shutter door; 48. a dust hood;
5. an exhaust gas treatment device; 51. a first exhaust pipe; 52. a second exhaust pipe; 53. a first interface; 54. a vertical plate; 55. a second interface; 56. a valve plate; 57. a permanent magnet; 58. an electromagnet; 59. an infrared sensor; 510. an air cavity; 511. an elastic film; 512. an inflation inlet;
6. a connecting pipe; 61. a tube body; 62. a guide rod; 63. a sleeve; 64. a limiting plate; 65. a chute; 66. a first spring; 67. a mounting plate; 68. a first sealing plate; 69. a first sealing sheet; 610. a second spring; 611. a second sealing plate; 612. and a second sealing sheet.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Examples
As shown in fig. 1 to 9, an exhaust gas treatment system for casting equipment production comprises a workbench 1 for placing a sand box, wherein the workbench 1 is fixed on the ground. The workbench 1 is provided with a casting trolley 2 in a sliding manner, and the workbench 1 is provided with a positioning groove 13 for placing a sand box. The workbench 1 is provided with a first guide rail 11 along the length direction of the workbench 1, the lower part of the casting trolley 2 is provided with a first guide groove 21 matched with the first guide rail 11, and the first guide groove 21 is sleeved outside the first guide rail 11 and is in sliding connection with the first guide rail 11. The two sides of the casting trolley 2 are respectively provided with a first motor 22, a transmission gear 23 is fixedly arranged on a transmission shaft 25 of the first motor 22, and the transmission gear 23 is positioned in the casting trolley 2. A rack 24 parallel to the first guide rail 11 is fixedly arranged on the workbench 1, and the transmission gear 23 is meshed with the rack 24 for transmission. The side wall of the casting trolley 2 is provided with a through hole for the transmission shaft 25 to pass through, and the transmission shaft 25 is rotationally connected with the through hole through a bearing. The inside of the casting trolley 2 is provided with a crane 26 for lifting molten metal, the crane 26 adopts the existing structure according to the requirement, and the ladle containing the molten metal is lifted by the crane 26 to cast the sand box. The first motors 22 on two sides of the casting trolley 2 work synchronously, the first motors 22 drive the transmission gears 23 to rotate, and the transmission gears 23 are meshed with the racks 24, so that the transmission gears 23 slide on the workbench 1 along the racks 24, and further the casting trolley 2 is driven to slide on the workbench 1, and the casting trolley 2 performs fixed-point casting on ladles placed on different positions on the workbench 1 in the sliding process.
The casting trolley 2 is provided with a primary treatment device 3 for preliminary treatment of the waste gas. The primary treatment device 3 comprises a box 31, and the box 31 is fixedly arranged at the top of the casting trolley 2. One end of the box body 31 is communicated with an air chamber 37 arranged at the top of the casting trolley 2 through an air inlet pipe 32, two air inlet pipes 32 are arranged, and the air inlet pipes 32 are positioned on the end head and the side wall of the box body 31. The bottom of the air chamber 37 is provided with an air inlet plate 35, and the air inlet plate 35 is fixedly connected with the side wall of the casting trolley 2. The air inlet plate 35 is provided with a plurality of air inlet holes 36, and waste gas generated by casting in the casting trolley 2 enters the air chamber 37 through the air inlet holes 36 and then enters the box body 31 through the air inlet pipe 32 for preliminary treatment. The aperture of the intake hole 36 gradually increases from the direction toward the intake pipe 32 to the direction away from the intake pipe 32. Since the air force near the air inlet pipe 32 is relatively large, the exhaust gas inside the casting trolley 2 near the air inlet pipe 32 easily enters the air chamber 37; the exhaust gas far away from the air inlet pipe 32 is less likely to enter the air chamber 37 due to less wind force; therefore, the smaller aperture of the air inlet hole 36 near the air inlet pipe 32 is beneficial to improving the wind resistance at the air inlet pipe 32, thereby improving the uniformity of exhaust gas absorption in the casting trolley 2.
An arc-shaped guide plate 34 is arranged at the corner of the air inlet pipe 32, and the guide plate 34 is fixed on the inner wall of the air inlet pipe 32. The baffle 34 is arranged at one end close to the inlet of the air inlet pipe 32 and is conical, so that the baffle 34 has the functions of guiding and splitting air flow, and the baffle 34 has the function of buffering the air flow at the corner, so that the impact of the air flow on the air inlet pipe 32 is reduced, and the noise is reduced.
The other end of the box 31 is provided with an air outlet pipe 33, and the air outlet pipe 33 is connected with the first interface 53 through a connecting pipe 6. The cooling mechanism, the sedimentation mechanism and the acceleration mechanism are sequentially arranged in the box body 31 from the air inlet pipe 32 to the air outlet pipe 33. The cooling mechanism comprises a cold rod 310, one end of the cold rod 310 is connected with an external refrigerator through a rotary joint, the refrigerator adopts an existing structure according to needs, and the refrigerator provides cold energy for the cold rod 310, so that the temperature of high-temperature waste gas is reduced through the cold rod 310. The refrigerator may be fixedly provided on the casting trolley 2. A plurality of stirring rods 311 are uniformly arranged on the cold rod 310, and the cold rod 310 drives the stirring rods 311 to rotate so as to cool the waste gas. One end of the cold bar 310 passes through the fixing plate 39 and is rotatably connected with the fixing plate 39 through a bearing. The fixing plate 39 is fixed on the inner wall of the box 31, and a closed transmission chamber 322 is enclosed between the fixing plate 39 and the end of the box 31. The fixing plate 39 is provided with a through hole for the air inlet pipe 32 to pass through, and the air inlet pipe 32 is sealed with the fixing plate 39 through a sealing ring. A wind deflector 312 is provided at the outlet of the air intake pipe 32, and the wind deflector 312 is fixed to the fixing plate 39. The size of the wind shield 312 is not smaller than that of the air inlet pipe 32, and the wind shield 312 has a blocking effect on the exhaust gas, so that the exhaust gas diffuses to the surrounding along the wind shield 312, and the cooling effect of the cold bar 310 on the exhaust gas is improved. The wind deflector 312 also effectively reduces the velocity of the exhaust gas so that the exhaust gas can more uniformly enter the subsequent settling mechanism.
The fixing plate 39 is provided with a transmission mechanism for driving the cold bar 310 to rotate, and the transmission mechanism is positioned in the transmission chamber 322. The transmission mechanism includes a rotary ring 326, the rotary ring 326 being coaxially disposed with the outlet of the air inlet duct 32. The rotating ring 326 is rotatably connected to the fixed plate 39 by a bearing. An outer gear ring 327 is fixedly arranged on the outer side surface of the rotating ring 326, and an inner gear ring 328 is fixedly arranged on the inner side surface of the rotating ring 326. The fixed plate 39 is rotatably provided with a drive gear 325 engaged with an outer ring gear 327 through a bearing, and the drive gear 325 is connected to a second motor 323 through a decelerator 324. The decelerator 324 and the second motor 323 are fixed to the inner wall of the case 31 or the fixed plate 39. The fixed plate 39 is rotatably provided with a plurality of auxiliary gears 330 engaged with the outer gear ring 327 through bearings, and the auxiliary gears 330 are beneficial to improving the rotation stability of the rotating ring 326. A driven gear 329 is fixedly provided on an end of the cold bar 310 located in the driving chamber 322, and the driven gear 329 is engaged with the ring gear 328.
The second motor 323 drives the driving gear 325 to rotate through the speed reducer 324, the driving gear 325 drives the rotating ring 326 to rotate through the outer gear ring 327, the rotating ring 326 drives the inner gear ring 328 to synchronously rotate, the inner gear ring 328 is meshed with the driven gear 329, thereby driving the driven gear 329 to rotate, the driven gear 329 drives the cold rod 310 to rotate, and the cold rod 310 drives the stirring rod 311 to synchronously rotate, so that the waste gas is stirred and cooled. The cooling rod 310 and the stirring rod 311 are also beneficial to reducing the speed of the waste gas in the process of stirring and cooling the waste gas, so that the waste gas can slowly and uniformly enter the sedimentation mechanism, and the sedimentation effect of solid particles in the waste gas is improved.
The bottom of the box 31 is provided with a dust discharging pipe 38, and the dust discharging pipe 38 is positioned below the cooling mechanism and connected with the sedimentation mechanism. The soot deposited during the cooling of the exhaust gas in the cooling means is collected in the dust discharge pipe 38, and the soot deposited by the deposition means is also collected in the dust discharge pipe 38. The outlet of the dust discharging pipe 38 is positioned in the casting trolley 2, and the bottom end of the dust discharging pipe 38 is provided with a valve for cleaning the collected dust.
The sedimentation mechanism comprises two partition plates 313 vertically arranged in the box body 31, and the edges of the two partition plates 313 are welded, sealed and fixedly connected with the inner wall of the box body 31. An upper plate 315 and a lower plate 316 are obliquely arranged between the two partition plates 313, two ends of the upper plate 315 and the lower plate 316 are welded and fixed on the partition plates 313, and two sides of the upper plate 315 and the lower plate 316 are fixed on the inner wall of the box body 31. An exhaust gas inlet is arranged on the partition plate 313 close to the cooling mechanism, a filter screen 314 is arranged at the exhaust gas outlet of the other partition plate 313, and the filter screen 314 is positioned between the upper plate 315 and the lower plate 316. A plurality of inclined guide plates 317 are arranged between the upper plate 315 and the lower plate 316, one end of each guide plate 317 is welded and fixed on the partition plate 313, and two sides of each guide plate 317 are welded and fixed on the inner wall of the box body 31. And a gas passing channel is arranged between the other end of the guide plate 317 and the partition plate 313, and the gas passing channels of adjacent guide plates 317 are staggered. The baffle plates 317 and the upper plate 315 are fixedly provided with a plurality of baffle plates 318 on the lower surfaces thereof, the baffle plates 318 have a blocking effect on the exhaust gas, and after the exhaust gas collides with the baffle plates 318 in the flowing process, the smoke dust in the exhaust gas is caused to fall down, and then slides into the dust exhaust pipe 38 along the baffle plates 317 or the lower plate 316 for collection.
The accelerating mechanism comprises a first taper pipe 319 and a second taper pipe 321, and the first taper pipe 319 is connected with the second taper pipe 321 through a straight pipe 320. The end of the first taper pipe 319 is fixed on the partition 313 by welding and the end of the second taper pipe 321 is fixed on the inner wall of the case 31 by welding. The first cone 319 communicates with the exhaust outlet on the partition 313 and the second cone 321 communicates with the exhaust outlet 33. When the exhaust gas flows in the first taper pipe 319, the flow speed of the exhaust gas gradually increases due to the gradual decrease in the cross section of the taper pipe, and the increased exhaust gas flows into the straight pipe 320. After the exhaust gas in the straight pipe 320 enters the second cone 321, the energy of the compressed exhaust gas is released due to the gradual increase of the cross section of the second cone 321, and the exhaust gas is further accelerated in the second cone 321. The accelerated exhaust gas smoothly and rapidly enters the gas outlet pipe 33.
One side of the workbench 1 is provided with an exhaust gas treatment device 5, and the exhaust gas treatment device 5 adopts the existing model as required. The exhaust gas treatment device 5 is used for performing final adsorption, desorption, catalytic combustion treatment and then discharging of the exhaust gas. The exhaust gas treatment device 5 powers the flow of exhaust gas.
The exhaust gas treatment device 5 is provided with a first exhaust gas pipe 51 and a second exhaust gas pipe 52, the first exhaust gas pipe 51 and the second exhaust gas pipe 52 being arranged to feed exhaust gas into the exhaust gas treatment device 5 for treatment. The first exhaust pipe 51 is fixed to a riser 54, and the riser 54 is fixed to the table 1. The first exhaust pipe 51 is provided with a plurality of first interfaces 53, and the first interfaces 53 are connected with the air outlet pipe 33 of the primary treatment device 3 through the connecting pipe 6. The valve plate 56 for controlling the first interface 53 to be closed is arranged in the first interface 53, and the valve plate 56 can adopt a flap valve or a butterfly valve according to requirements. The second exhaust pipe 52 is provided with a second port 55, and the second port 55 is connected to the secondary treatment device 4. The secondary treatment device 4 is provided at one side of the casting trolley 2 for collecting exhaust gas emitted during casting and exhaust gas generated during cooling.
The connecting pipe 6 comprises a stepped pipe body 61, one end of the pipe body 61, which is close to the air outlet pipe 33, is provided with an air inlet with a gradually reduced caliber, and the air inlet is used for guiding the exhaust gas and reducing the noise generated in the flowing process of the exhaust gas. A rebound structure is provided between the tube body 61 and the outlet tube 33. The rebound structure comprises a guide rod 62 and a sleeve 63, the guide rod 62 being inserted into the sleeve 63 and being slidingly connected with the sleeve 63. One end of the guide rod 62 is fixed to a mounting plate 67 provided outside the tube body 61, and the sleeve 63 is fixed to the end of the case 31. The sleeve 63 is provided with a through hole for the guide rod 62 to pass through the sleeve 63, and the guide rod 62 is slidably connected with the through hole. A limiting plate 64 is fixedly arranged at one end of the guide rod 62, which is positioned in the sleeve 63, and the size of the limiting plate 64 is larger than that of the through hole. The inner wall of the sleeve 63 is provided with a chute 65, the chute 65 being arranged parallel to the guide rod 62. The limiting plate 64 is provided with a sliding block matched with the sliding groove 65, and the sliding block is positioned in the sliding groove 65 and is in sliding connection with the sliding groove 65. A first spring 66 is arranged between the mounting plate 67 and the sleeve 63, two ends of the first spring 66 are respectively fixed on the mounting plate 67 and the sleeve 63, and the first spring 66 is sleeved outside the guide rod 62. The first spring 66 provides a contractive force to the tube 61 through the mounting plate 67.
A first sealing structure is provided between the air outlet pipe 33 and the pipe body 61. The first sealing structure includes a first sealing plate 68 having a ring shape, the first sealing plate 68 being fixed to the outlet pipe 33, and a second sealing plate 611 having a ring shape, the second sealing plate 611 being fixed to the pipe body 61. The first sealing plate 68 is provided with a first sealing plate 69 in a ring shape on a side facing the second sealing plate 611, and the first sealing plate 69 is connected with the first sealing plate 68 by a second spring 610. The second sealing plate 611 is fixedly provided with a second sealing plate 612 in a ring shape toward one side of the first sealing plate 68. The second sealing tab 612 interfaces or overlaps with the first sealing tab 69. When the pipe body 61 slides in the air outlet pipe 33, the pipe body 61 drives the second sealing piece 612 to move through the second sealing plate 611, so that the second sealing piece 612 is attached to the first sealing piece 69, and the second spring 610 is pressed with a compression force, and the second spring 610 improves the attaching tightness between the first sealing piece 69 and the second sealing piece 612, so that the sealing effect between the pipe body 61 and the air outlet pipe 33 is ensured.
The first interface 53 is connected with the connecting pipe 6 through a connecting structure. The connection structure comprises an annular electromagnet 58, and the electromagnet 58 is fixedly arranged on the inner wall of the first interface 53. An annular permanent magnet 57 is fixedly arranged on the end of the pipe body 61. After the electromagnet 58 is electrified, the permanent magnet 57 and the electromagnet 58 are adsorbed together, so that the permanent magnet 57 drives the pipe body 61 to slide along the air outlet pipe 33, and the air outlet pipe 33 is accurately abutted with the first interface 53. An infrared sensor is arranged between the pipe body 61 and the permanent magnet 57, and the infrared sensor 59 is used for monitoring the position of the permanent magnet 57 and the condition that the pipe body 61 is in butt joint with the first interface 53.
A second sealing structure is arranged between the end head of the first interface 53 and the tank body. The second sealing structure comprises an annular air cavity 510, the air cavity 510 being secured to the end of the first port 53. The side of the air cavity 510, which is close to the pipe body 61, is provided with an arc-shaped elastic membrane for sealing the air cavity 510, and the elastic membrane 511 can be made of rubber powder, so that the tightness of the air cavity 510 is ensured. An annular groove into which the elastic membrane 511 is fitted is provided on the outer wall of the tube body 61. An air charging port 512 is arranged on the air cavity 510, the air charging port 512 is connected with an external air pump, and an electromagnetic valve is arranged at the air charging port 512. The air pump inflates the air cavity 510 through the inflation inlet 512, and the elastic membrane 511 bulges under the action of air pressure and is extruded in the annular groove, so that the sealing connection between the pipe body 61 and the first interface 53 is realized.
The secondary treatment device 4 includes a fixing base 41, and the fixing base 41 is fixedly disposed at one end of the workbench 1. A plurality of dust suction hoods 48 are arranged on the closed end of the fixing seat 41, and the dust suction hoods 48 are fixedly connected with the second connector 55 in a sealing mode. The blower may be provided in the hood 48 alone or the exhaust gas treatment device 5 may be provided with suction power. The open end of fixing base 41 is fixed and is provided with U type protection casing 42, and the one end and the fixing base 41 sealing fixed connection of protection casing 42. The hood 42 is a flexible plastic cloth, has foldability, and is airtight. A plurality of U-shaped supporting plates 43 are uniformly arranged on the protective cover 42, and the supporting plates 43 support the protective cover 42. The workbench 1 is fixedly provided with a second guide rail 12, and the second guide rail 12 is arranged in parallel with the first guide rail 11. The support plate 43 is provided with a third motor 46 for driving the protective cover 42 to slide on the second guide rail 12, an output shaft of the third motor 46 is provided with a roller, and the roller is positioned on the second guide rail 12. The third motor 46 drives the roller to rotate, so that one end of the protective cover 42 drives the protective cover 42 to slide on the workbench 1. The end of the protection cover 42, which is close to the casting trolley 2, is provided with a rolling door 47, and the rolling door 47 is of an existing structure and is used for sealing the opening of the protection cover 42, so that the overflow of waste gas in the protection cover 42 is reduced.
The shield 42 is provided with a folding mechanism for folding and unfolding the shield 42. The folding and unfolding mechanism comprises a plurality of folding and unfolding units, each folding and unfolding unit comprises a first connecting rod 44 and a second connecting rod 45 which are arranged in a crossing mode, and the middle parts of the first connecting rod 44 and the second connecting rod 45 are hinged to the supporting plate 43 through pin shafts. The first link 44 between adjacent folding and unfolding units is hinged with the second connection.
The exhaust treatment system further includes a power source and a controller, and the power source, the first motor 22, the second motor 323, the third motor 46, the infrared sensor 59, the electromagnet 58, the valve plate 56, the electromagnetic valve, and the exhaust treatment device 5 are all electrically connected with the controller by adopting the prior art.
When the ladle is used, the ladle is hooked on the lifting hook of the crane 26, the air outlet pipe 33 is aligned with the first interface 53, the electromagnet 58 is electrified, the electromagnet 58 is attracted with the permanent magnet 57, the permanent magnet 57 is detected by the infrared sensor 59, the valve plate 56 is controlled to be opened by the controller, the waste gas treatment equipment 5 operates, the ladle is moved by the crane 26 to cast the sand box, waste gas generated by casting enters the air chamber 37 through the air inlet hole 36, then enters the air inlet pipe 32 and is treated in the treatment device, and the treated waste gas enters the first waste gas pipe 51 through the air outlet pipe 33, the connecting pipe 6 and the first interface 53 and then enters the waste gas treatment equipment 5 for treatment. At the same time, the exhaust gases in the hood 42 pass through the hood 48 into the second exhaust gas duct 52 and into the exhaust gas treatment device 5 for treatment.
After casting is completed, the valve plate 56 is closed, the electromagnet 58 is powered off, and the connecting pipe 6 slides out of the first interface 53 under the action of the first spring 66. The casting trolley 2 is moved by the first motor 22 and the casting trolley 2 is moved to the next casting position under the influence of the controller while the outlet duct 33 is aligned with the next first interface 53. Simultaneously, the third motor 46 drives the protective cover 42 to move on the workbench 1, and covers and sucks the sand box after casting.
Repeating the steps to perform casting. After the final casting is completed, the rolling shutter door 47 is put down, and all the sand boxes which are completely cast are covered by the protective cover 42, so that the exhaust gas is absorbed in the cooling process.
Therefore, the waste gas treatment system based on casting equipment production can solve the problems that the existing waste gas treatment device is poor in waste gas absorption effect and high-temperature metal liquid drops influence the normal use of the waste gas treatment device.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (10)
1. An exhaust treatment system based on casting equipment production usefulness, its characterized in that: the device comprises a workbench for placing a sand box, wherein a casting trolley is arranged on the workbench in a sliding manner, a crane for lifting molten metal is arranged in the casting trolley, a primary treatment device is arranged on the casting trolley, and a secondary treatment device is arranged on one side of the casting trolley and is in sliding connection with the workbench; the waste gas treatment equipment is provided with a first waste gas pipe and a second waste gas pipe, the first waste gas pipe is provided with a plurality of first interfaces, the first interfaces are connected with the primary treatment device through connecting pipes, valve plates for controlling the first interfaces to be closed are arranged in the first interfaces, and the first interfaces are connected with the connecting pipes through connecting structures; the second exhaust pipe is provided with a second interface which is connected with the secondary treatment device.
2. An exhaust gas treatment system for casting equipment based production as claimed in claim 1, wherein: the casting trolley is characterized in that a first guide rail is arranged on the workbench along the length direction of the workbench, a first guide groove matched with the first guide rail is arranged at the lower part of the casting trolley, the first guide groove is sleeved outside the first guide rail and is in sliding connection with the first guide rail, first motors are arranged on two sides of the casting trolley, a transmission gear is arranged on a transmission shaft of each first motor and is meshed with a rack arranged on the workbench for transmission, and a through hole for the transmission shaft to pass through is formed in the side wall of the casting trolley; the workbench is provided with a positioning groove for placing the sand box.
3. An exhaust gas treatment system for casting equipment based production according to claim 2, wherein: the first-stage treatment device comprises a box body, wherein the box body is arranged at the top of the casting trolley, one end of the box body is communicated with an air chamber arranged at the top of the casting trolley through an air inlet pipe, an air inlet plate is arranged at the bottom of the air chamber, a plurality of air inlet holes are formed in the air inlet plate, the aperture of each air inlet hole is gradually increased in the direction from being close to the air inlet pipe to being far away from the air inlet pipe, an arc-shaped guide plate is arranged at the corner of the air inlet pipe, an air outlet pipe is arranged at the other end of the box body, and the air outlet pipe is connected with a first interface through a connecting pipe; the inside of box has set gradually cooling body, subsides mechanism and acceleration mechanism from intake pipe to outlet duct direction, and the bottom of box is provided with the dust exhaust pipe, and the dust exhaust pipe is located cooling body's below and is connected with subsides mechanism, and the export of dust exhaust pipe is located the casting dolly.
4. A casting plant production-based exhaust gas treatment system according to claim 3, wherein: the cooling mechanism comprises a cold rod, one end of the cold rod is connected with an external refrigerator through a rotary joint, a plurality of stirring rods are uniformly arranged on the cold rod, the cold rod is rotationally connected with a fixed plate, the fixed plate is fixed on the inner wall of the box body, a through hole for an air inlet pipe to pass through is formed in the fixed plate, a wind shield is arranged at the outlet of the air inlet pipe, the wind shield is fixed on the fixed plate, a transmission mechanism for driving the cold rod to rotate is arranged on the fixed plate, and the transmission mechanism is located in a closed transmission chamber defined by the fixed plate and the end of the box body.
5. An exhaust gas treatment system for casting equipment based production as claimed in claim 4, wherein: the transmission mechanism comprises a rotating ring, the rotating ring is coaxial with an outlet of the air inlet pipe, the rotating ring is rotationally connected with a fixed plate, an outer gear ring is arranged on the outer side face of the rotating ring, an inner gear ring is arranged on the inner side face of the rotating ring, a driving gear meshed with the outer gear ring is rotationally arranged on the fixed plate, the driving gear is connected with a second motor through a speed reducer, a plurality of auxiliary gears meshed with the outer gear ring are rotationally arranged on the fixed plate, a driven gear is arranged at one end of the cold rod, which is positioned in the transmission chamber, and the driven gear is meshed with the inner gear ring.
6. An exhaust gas treatment system for casting equipment based production as claimed in claim 5, wherein: the sedimentation mechanism comprises two clapboards vertically arranged in the box body, an upper plate and a lower plate are obliquely arranged between the two clapboards, an exhaust gas inlet is formed in the clapboard close to the cooling mechanism, a filter screen is arranged at an exhaust gas outlet of the other clapboard, and the filter screen is positioned between the upper plate and the lower plate; a plurality of inclined guide plates are arranged between the upper plate and the lower plate, and staggered air passing channels are arranged between the guide plates and the partition plates; a plurality of baffles are arranged on the lower surfaces of the guide plate and the upper plate;
the accelerating mechanism comprises a first taper pipe and a second taper pipe, the first taper pipe is connected with the second taper pipe through a straight pipe, the end head of the first taper pipe is fixed on the partition plate and communicated with the waste gas outlet, and the end head of the second taper pipe is fixed on the inner wall of the box body and communicated with the air outlet pipe.
7. An exhaust gas treatment system for casting equipment based production as claimed in claim 6, wherein: the connecting pipe includes the notch cuttype body, and the body is close to the one end of outlet duct and is provided with the air inlet that the bore reduces gradually, is provided with rebound structure between body and the outlet duct, rebound structure includes guide arm and sleeve, and the guide arm inserts in the sleeve and with sleeve sliding connection, and the one end of guide arm is fixed on the mounting panel that the body outside set up, and the sleeve is fixed on the end of box, is provided with on the sleeve and makes the guide arm pass telescopic through-hole, is provided with the limiting plate on the one end that the guide arm is located the sleeve inside, is provided with the spout on the telescopic inner wall, is provided with the slider with spout looks adaptation on the limiting plate, the slider is located the spout and with spout sliding connection, is provided with first spring between mounting panel and the sleeve, and first spring housing is established in the outside of guide arm.
8. An exhaust gas treatment system for casting equipment based production as claimed in claim 7, wherein: be provided with a seal structure between outlet duct and the body, a seal structure includes annular first closing plate and annular second closing plate, and first closing plate is fixed on the outlet duct, and the second closing plate is fixed on the body, and one side of first closing plate orientation second closing plate is provided with annular first sealing piece, connects through the second spring between first sealing piece and the first closing plate, and one side of second closing plate orientation first closing plate is provided with annular second sealing piece, second sealing piece overlap joint with first sealing piece.
9. An exhaust gas treatment system for casting equipment based production as claimed in claim 8, wherein: the connecting structure comprises an annular electromagnet which is fixedly arranged on the inner wall of the first interface, a permanent magnet is arranged on the end head of the pipe body, and an infrared sensor is arranged between the pipe body and the permanent magnet; a second sealing structure is arranged between the first interface end head and the tank body; the second sealing structure comprises an annular air cavity, the air cavity is fixed on the end head of the first connector, one side of the air cavity, which is close to the pipe body, is provided with an arc-shaped elastic membrane for sealing the air cavity, and the outer wall of the pipe body is provided with an annular groove for clamping the elastic membrane; an air charging port is arranged on the air cavity and connected with an external air pump, and an electromagnetic valve is arranged at the air charging port.
10. An exhaust gas treatment system for casting equipment based production as claimed in claim 9, wherein: the secondary treatment device comprises a fixed seat, wherein the fixed seat is fixedly arranged at one end of the workbench, one end of the fixed seat is provided with a dust hood, the dust hood is connected with a second interface, the opening end of the fixed seat is fixedly provided with a U-shaped protective cover, a plurality of U-shaped supporting plates are uniformly arranged on the protective cover, a folding and unfolding mechanism for folding and unfolding the protective cover is arranged on the protective cover, the folding and unfolding mechanism comprises a plurality of folding and unfolding units, each folding and unfolding unit comprises a first connecting rod and a second connecting rod which are arranged in a crossed manner, the middle parts of the first connecting rod and the second connecting rod are hinged with the supporting plates through pin shafts, and the first connecting rod and the second connecting rod between every two adjacent folding and unfolding units are hinged; one end of the protective cover, which is close to the casting trolley, is provided with a rolling door, a second guide rail is arranged on the workbench, and a third motor for driving the protective cover to slide on the second guide rail is arranged on the supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311604744.XA CN117582741A (en) | 2023-11-28 | 2023-11-28 | Waste gas treatment system based on casting equipment production usefulness |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311604744.XA CN117582741A (en) | 2023-11-28 | 2023-11-28 | Waste gas treatment system based on casting equipment production usefulness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118558996A (en) * | 2024-08-01 | 2024-08-30 | 泰州市景晟精密铸造厂 | A casting production device for valve casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118558996A (en) * | 2024-08-01 | 2024-08-30 | 泰州市景晟精密铸造厂 | A casting production device for valve casting |
| CN118558996B (en) * | 2024-08-01 | 2024-11-29 | 泰州市景晟精密铸造厂 | A casting production device for valve casting |
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