CN116164547A - Rotary kiln main kiln for treating NdFeB waste - Google Patents
Rotary kiln main kiln for treating NdFeB waste Download PDFInfo
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- CN116164547A CN116164547A CN202211694793.2A CN202211694793A CN116164547A CN 116164547 A CN116164547 A CN 116164547A CN 202211694793 A CN202211694793 A CN 202211694793A CN 116164547 A CN116164547 A CN 116164547A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/12—Combinations with mechanical gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1892—Systems therefor not provided for in F22B1/1807 - F22B1/1861
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention provides a rotary kiln main kiln for treating neodymium iron boron waste, which comprises a kiln head and a kiln tail smoke chamber, wherein a kiln pipe is obliquely and rotatably arranged between the kiln head and the kiln tail smoke chamber, a driving mechanism is arranged below the kiln pipe in a fitting way to circumferentially drive the kiln pipe, a fuel bin and a blower are connected to the kiln head, a feed hopper extending into the kiln pipe is arranged at the top part of one end of the kiln tail smoke chamber, which is close to the kiln pipe, a smoke exhaust pipe is arranged at one side of the feed hopper and connected to the kiln tail smoke chamber, a filter plate formed by filter plates in rotary connection is arranged at the joint of the smoke exhaust pipe and the kiln tail smoke chamber, the filter plates are mutually overturned and collided through the steam driving of a waste heat driving mechanism in the kiln tail smoke chamber, the self-cleaning of the filter plate is realized through the driving of waste heat of tail gas, the secondary recovery of heat energy is realized, the waste is avoided, the unmanned self-cleaning of the filter plate is realized, and the rotary kiln main kiln has good development prospect.
Description
Technical Field
The invention relates to the field of neodymium iron boron recovery, in particular to a main kiln of a rotary kiln for treating neodymium iron boron waste.
Background
In the production process of the sintered NdFeB alloy permanent magnet, the production can be caused by cutting, polishing, oxidation and abandonment and the like
30% -40% of waste materials, the composition of the waste materials is basically the same as that of alloy materials, the content of rare earth elements in the waste materials is far higher than that of rare earth elements in rare earth ores, and the rare earth elements in the part of processing waste materials are recycled, so that the waste materials have extremely high economic value and social environmental protection benefits. At present, wet recycling is generally adopted for neodymium iron boron alloy processing waste.
In the wet recycling process, the rotary kiln is generally adopted for sintering waste materials, a large amount of smoke dust can be generated in the firing and using process of the rotary kiln, and the smoke dust is blown out along with the operation of a kiln head blower, so that the kiln tail is often provided with a dust collecting chamber and a filter screen for filtering tail gas, but the surface of the filter screen can be gradually accumulated and dirty along with the increase of the filtering time of the filter screen, the maximum airflow flux of the filter screen is influenced, the exhaust of the tail gas and the sintering of the waste materials are influenced, and the dust removal of the filter screen is connected by using an external device, so that the time and the labor are wasted, and the use cost of the rotary kiln is increased.
Therefore, a main kiln of the rotary kiln for recycling NdFeB waste with a self-cleaning function of a filter screen is needed.
Disclosure of Invention
The invention aims to provide a main kiln of a rotary kiln for treating neodymium iron boron waste.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a handle rotary kiln main kiln of neodymium iron boron waste material, including kiln head and kiln tail smoke chamber, the slope rotates between kiln head and the kiln tail smoke chamber and is provided with the kiln pipe, the laminating of the below of kiln pipe is provided with actuating mechanism and carries out the circumference drive of kiln pipe, be connected with fuel silo and air-blower on the kiln head, the one end top that the kiln tail smoke chamber is close to the kiln pipe is provided with the feeder hopper that extends to in the kiln pipe, one side of feeder hopper is provided with and discharges fume pipe connection on the kiln tail smoke chamber, the junction of discharging fume pipe and kiln tail smoke chamber is provided with the filter that comprises the filter plate that rotates to connect, the filter overturns the collision mutually through the indoor waste heat actuating mechanism steam drive of kiln tail smoke and carries out self-cleaning.
As a further scheme of the invention: the filter includes board frame and filter plate, and the board frame is the frame construction of rectangle, fixes in the bottom of discharging fume the tobacco pipe, and the interval rotation is provided with the filter plate in the board frame, and one side of board frame is provided with the steam channel of waste heat actuating mechanism intercommunication, and in the steam channel was visited to the one end of filter plate, be connected with drive impeller, through the rotation of steam flow drive filter plate, the junction of filter plate and board frame was provided with the elastic component and acts on filter plate and board frame and restrict the initial angle of filter plate.
As a further scheme of the invention: the filter plate comprises a collision air plate and collision teeth, wherein the collision air plate is of a flaky plate structure, two groups of collision teeth are arranged on the surface of the collision air plate, the collision teeth are symmetrically arranged along the central axis of the collision air plate, and the collision teeth of adjacent collision air plates are arranged in a staggered mode.
As a further scheme of the invention: the waste heat driving mechanism comprises a preheating plate, an evaporating chamber and a backlog cylinder, wherein the preheating plate is fixed on two sides of a kiln tail smoke chamber, the evaporating chamber is fixed on one surface of the kiln tail smoke chamber opposite to a kiln pipe, the evaporating chamber and the preheating plate are of a cavity structure and are mutually communicated, a water inlet and a water outlet are respectively arranged on the preheating plate and the evaporating chamber, the backlog cylinder is arranged at the top of the evaporating chamber and is communicated with a filter plate, the backlog cylinder is of a hydraulic cylinder structure with initial pressure, and the on-off of a gas circuit is controlled according to the pressure.
As a further scheme of the invention: the evaporating chamber is an arc-shaped plate, and the corresponding parts of the preheating plates at the two sides are corresponding arc-shaped edges.
As a further scheme of the invention: the preheating plate comprises a heat absorption channel and an isolation channel, the isolation channel is arranged at the joint edge of the inner edge of the preheating plate and the evaporation chamber, the joint of the preheating plate and the evaporation chamber is arranged in the isolation channel, the rest positions are the heat absorption channels which are arranged in an S shape, and two ends of the heat absorption channels are respectively connected to one ends of the water inlet and one end of the isolation channel.
As a further scheme of the invention: the backlog jar is including the intercommunication jar and the pressure accumulation jar that communicate through the connecting seat, is provided with first slider and second slider respectively in intercommunication jar and the pressure accumulation jar, fills with fluid between first slider and the second slider and carries out hydraulic drive, and the side of intercommunication jar is provided with the air duct with filter gas intercommunication, is provided with the pressure spring between second slider and the pressure accumulation jar structure and acts on first slider indirectly and makes first slider remain the downward movement throughout and shields the trend of air duct opening.
As a further scheme of the invention: the connecting seat is provided with an adjusting bolt in threaded connection with the communicating position of the communicating cylinder and the pressure accumulating cylinder to control the flow quantity of the connecting channel.
As a further scheme of the invention: the first sliding block comprises an on-off body and a time-delay sliding block, the on-off body is arranged in the communication cylinder in a sliding mode to control on-off of the air duct, a strip-shaped groove distributed along the sliding direction of the on-off body is concavely formed in one side of the on-off body, corresponding to the air duct, a channel communicated with the evaporation chamber is formed in the bottom of the groove, and the time-delay sliding block with the length shorter than that of the groove is arranged in the groove in a sliding mode.
As a further scheme of the invention: one side of a kiln tail smoke chamber at the lower side of the filter plate is provided with a drawing type ash accumulation tray.
Advantageous effects
1. The invention discloses a self-cleaning filter plate, which comprises a plate frame and a filter plate, wherein the plate frame is of a rectangular frame structure and is fixed at the bottom of a smoke exhaust pipe, the filter plate is rotatably arranged in the plate frame at intervals, one side of the plate frame is provided with a steam channel communicated with a waste heat driving mechanism, one end of the filter plate extends into the steam channel and is connected with a driving impeller, the filter plate is driven to rotate by steam generated by the waste heat driving mechanism, an elastic piece is arranged at the joint of the filter plate and the plate frame and acts on the filter plate and the plate frame to limit the initial angle of the filter plate, and the filter plate which is rotatably arranged overturns under the driving of the steam collides with the adjacent filter plate to shake off dust adhered to the surface between gaps, so that the self-cleaning of the filter plate is realized.
2. The residual heat driving mechanism is internally provided with the accumulation cylinder which is in a hydraulic cylinder structure with initial pressure and is used for controlling the on-off of the gas circuit according to the pressure, the air pressure content of the steam in the evaporation chamber is continuously controlled through the accumulation cylinder, the defect of driving force caused by continuous small-flow steam is avoided, the self-cleaning time of the driving filter plate is also separated, the self-cleaning times of the filter screen are reduced, and the filtering effect is prevented from being influenced by too frequent self cleaning.
3. According to the invention, the adjusting bolt is in threaded connection with the communicating position of the communicating cylinder and the pressure accumulating cylinder on the connecting seat to control the flow quantity of the connecting channel, the screw-in depth of the adjusting bolt is controlled to control the flow rate of oil liquid through the arrangement of the adjusting bolt, namely the resetting speed of the first sliding block is controlled, the air communicating duration of the evaporating chamber and the filter plate is prolonged through slowing down the resetting speed of the first sliding block, the complete release of steam is ensured, the triggering interval time is prolonged, the self-cleaning times of the filter screen are reduced, and the effect of filtering is prevented from being influenced by too frequent self cleaning.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of a waste heat driving mechanism according to the present invention.
Fig. 3 is a cross-sectional view of the preheating plate structure of the present invention.
Fig. 4 is a schematic view of the structure of the filter plate of the present invention.
FIG. 5 is a schematic view of the backlog cylinder of the present invention.
FIG. 6 is a schematic cross-sectional view of the backlog cylinder of the present invention.
Fig. 7 is a schematic cross-sectional view of a first slider structure according to the present invention.
In fig. 1-7: 1-kiln head, 2-kiln tail smoke chamber, 3-kiln tube, 4-driving mechanism, 5-fuel bin, 6-blower, 7-feed hopper, 8-filter plate, 81-plate frame, 82-filter plate, 821-air striking plate, 822-strike tooth, 83-driving impeller, 84-elastic piece, 9-waste heat driving mechanism, 91-preheating plate, 911-back heat absorbing channel, 912-isolation channel, 92-evaporating chamber, 93-accumulating cylinder, 931-communicating cylinder, 932-first slider, 9321-on-off body, 9322-delay slider, 933-air duct, 934-accumulating cylinder, 935-connecting seat, 936-second slider, 937-pressure spring, adjusting bolt, 10-ash accumulating plate, 11-smoke discharging tube.
Detailed Description
The specific technical scheme of the invention will be clearly and completely described below with reference to fig. 1 to 7 in the drawings of the specification of the invention;
referring to fig. 1-7, fig. 1 is a schematic diagram of an overall structure of an embodiment of the present invention; FIG. 2 is a schematic diagram of a waste heat driving mechanism according to the present invention; FIG. 3 is a cross-sectional view of the preheating plate structure of the present invention; FIG. 4 is a schematic view of a filter plate structure of the present invention; FIG. 5 is a schematic view of the backlog cylinder of the present invention; FIG. 6 is a schematic cross-sectional view of the backlog cylinder of the present invention; fig. 7 is a schematic cross-sectional view of a first slider structure according to the present invention.
The rotary kiln main kiln for treating neodymium iron boron waste materials comprises a kiln head 1 and a kiln tail smoke chamber 2, a kiln pipe 3 is obliquely arranged between the kiln head 1 and the kiln tail smoke chamber 2 in a rotating mode, a driving mechanism 4 is arranged below the kiln pipe 3 in a laminating mode to drive the kiln pipe 3 in the circumferential direction, a fuel bin 5 and a blower 6 are connected to the kiln head 1, a feeding hopper 7 extending into the kiln pipe is arranged at the top of one end, close to the kiln pipe 3, of the kiln tail smoke chamber 2, a smoke exhaust pipe 11 is arranged on one side of the feeding hopper 7 and connected to the kiln tail smoke chamber 2, a filter plate 8 formed by a filter plate 82 in a rotating mode is arranged at the joint of the smoke exhaust pipe 11 and the kiln tail smoke chamber 2, and the filter plate 8 is in steam driving and mutually overturning collision through a waste heat driving mechanism 9 in the kiln tail smoke chamber 2 to perform self-cleaning.
The filter plate 8 comprises a plate frame 81 and a filter plate 82, wherein the plate frame 81 is of a rectangular frame structure and is fixed at the bottom of the smoke exhaust pipe 11, the filter plate 82 is rotatably arranged in the plate frame 81 at intervals, one side of the plate frame 82 is provided with a steam channel communicated with the waste heat driving mechanism 9, one end of the filter plate 82 stretches into the steam channel and is connected with a driving impeller 83, the filter plate 82 is driven to rotate through steam flow, and an elastic piece 84 acting on the filter plate 82 and the plate frame 81 is arranged at the joint of the filter plate 82 and the plate frame 81 to limit the initial angle of the filter plate 82;
through the upset of filter plate 82 that rotates the setting under steam drive, collide with adjacent filter plate 82, shake down with the dust that the surface was stained with between the gap, realize the self-cleaning of filter 8.
Specifically, the filter plate 82 includes an air striking plate 821 and striking teeth 822, the air striking plate 821 is a plate structure with a sheet shape, two groups of striking teeth 822 are arranged on the surface of the air striking plate 821, the striking teeth 822 are symmetrically arranged along the central axis of the air striking plate 821, and the striking teeth 822 of adjacent air striking plates 821 are arranged in a staggered manner;
by means of the arrangement of the striking teeth 822, the gap between the striking teeth 822 and the filter plates 82 can be supported to control and improve the filtering effect of the gap, the collision effect can be improved by the striking teeth 822, the dislocation arrangement of the striking teeth 822 enables the filter plates 82 to collide again when reset, and the cleaning efficiency is improved.
The waste heat driving mechanism 9 comprises a preheating disc 91, an evaporation chamber 92 and a backlog cylinder 93, wherein the preheating disc 91 is fixed on two sides of a kiln tail smoke chamber 2, the evaporation chamber 92 is fixed on one surface of the kiln tail smoke chamber 2 opposite to a kiln pipe 3, the evaporation chamber 92 and the preheating disc 91 are of a cavity structure and are mutually communicated, a water inlet and a water outlet are respectively arranged on the preheating disc 91 and the evaporation chamber 92, the backlog cylinder 93 is arranged at the top of the evaporation chamber 92 and is in air communication with the filter plate 8, the backlog cylinder 93 is of a hydraulic cylinder structure with initial pressure, and the on-off of an air path is controlled according to the pressure;
the air pressure and the content of the steam in the evaporating chamber 92 are continuously controlled by the backlog cylinder 93, so that the defect of driving force caused by continuous low-flow steam is avoided, the self-cleaning time of the driving filter plate 8 is also separated, the self-cleaning times of the filter screen 82 are reduced, and the too frequent self-cleaning influence on the filtering effect is prevented.
Specifically, the evaporating chamber 92 is an arc plate, the corresponding positions of the preheating discs 91 on two sides are corresponding arc edges, the arc structure is utilized to guide the smoke, the smoke flow direction is standardized, and the contact efficiency of the evaporating chamber 92 and the smoke is improved.
Specifically, the preheating plate 91 includes a heat absorbing channel 911 and an isolation channel 912, the isolation channel 913 is arranged along the joint edge of the preheating plate 91 and the evaporation chamber 92, the connection part of the preheating plate 91 and the evaporation chamber 92 is arranged in the isolation channel 912, the rest positions are the heat absorbing channel 911 which is arranged in an S shape, and two ends are respectively connected to one end of the water inlet and one end of the isolation channel 912;
by the arrangement of the heat insulation channel 912, direct contact between the cold water just introduced and the evaporating chamber 92 is avoided, the water temperature in the evaporating chamber 92 is ensured, and the arrangement of the heat absorption channel 911 improves the retention time of the water liquid in the preheating plate 91 and improves the preheating effect.
Specifically, the accumulating cylinder 93 includes a communicating cylinder 931 and an accumulating cylinder 934 which are communicated through a connecting seat 935, a first sliding block 932 and a second sliding block 936 are respectively arranged in the communicating cylinder 921 and the accumulating cylinder 934, oil is poured between the first sliding block 932 and the second sliding block 936 for hydraulic transmission, an air duct 933 which is in air communication with the filter plate 8 is arranged on the side surface of the communicating cylinder 935, and a pressure spring 937 is arranged between the second sliding block 936 and the accumulating cylinder 936 structure to indirectly act on the first sliding block 932, so that the first sliding block 932 always keeps a downward movement to shield the trend of the opening of the air duct 933;
further, the connecting position of the connecting cylinder 931 on the connecting seat 935 and the pressure accumulating cylinder 934 is in threaded connection with an adjusting bolt 938, so that the flow rate of a connecting channel is controlled, the screwing depth of the adjusting bolt 938 is controlled through the arrangement of the adjusting bolt 938, namely, the reset speed of the first sliding block 932 is controlled, the air communication duration of the evaporating chamber 92 and the filter plate 8 is prolonged through the reduction of the reset speed of the first sliding block 932, the complete release of steam is ensured, the triggering interval time is prolonged, the self-cleaning times of the filter screen 82 are reduced, and the excessively frequent self-cleaning influence on the filtering effect is prevented.
Further, the first slider 932 includes an on-off body 9321 and a delay slider 9322, the on-off body 9321 is slidably disposed in the communicating cylinder 931 to control on-off of the air duct 933, a bar-shaped groove distributed along the sliding direction of the on-off body 9321 is concavely disposed on a side of the on-off body 9321 corresponding to the air duct 933, a channel communicating with the evaporation chamber 92 is disposed at the bottom of the groove, and the delay slider 9322 with a length shorter than that of the groove is slidably disposed in the groove;
through the setting of time delay slide block 9322, when the break-make body 9321 receives hydraulic pressure effect whereabouts, time delay slide block 9322 receives frictional force effect to slide upwards, and the passageway extends gas communication time in by the break-make body 9321, guarantees the complete release of steam, prolongs the interval time that triggers, reduces the self-cleaning number of times of filter screen 82, prevents too frequent self-cleaning influence filter effect.
Specifically, a pull type ash accumulation tray 10 is arranged on one side of the kiln tail smoke chamber 2 below the filter plate 8, so that dirt and dust can be conveniently collected after cleaning.
When the technical scheme recorded in the embodiment is implemented, neodymium iron boron waste is led into the kiln tube 3 through the feed hopper 7, the kiln tube 3 rotates along with the driving of the driving mechanism 4 to drive the inner side waste to move towards the kiln head 1, the kiln head 1 side burns the waste in the kiln tube 3 through burning the inner fuel in the fuel cabin 5, and meanwhile, the air blower 6 operates to drive heat to flow, preheat the rear end waste and lead out smoke;
the guided out smoke enters the kiln tail smoke chamber 2, the water liquid communicated in the preheating plate 91 and the evaporating chamber 92 is heated, part of the water liquid is evaporated, the air pressure in the evaporating chamber 92 is increased, the rest of the water liquid is guided out along the water outlet, and the filtered smoke is discharged from the smoke discharging pipe 11;
along with the gradual lifting of the air pressure in the evaporating chamber 92, the movement resistance caused by the pressure spring 937 in the backlog cylinder 93 is overcome, the first sliding block 932 is lifted until the evaporating chamber 92 is communicated with the air of the filter plate 8, steam is discharged through a channel on one side of the plate frame 81, the filter plate 82 is driven to overturn, the accumulated dust on the surface is cleaned through collision between the striking teeth 822 and the adjacent filter plate 82, the air pressure of the evaporating chamber 92 falls back along with the exhaustion of the steam, the air communication between the evaporating chamber 92 and the filter plate 8 is disconnected, the filter plate 8 resets after cleaning, and the dust falls into the lower ash accumulation tray 10 to be collected.
Claims (10)
1. A rotary kiln main kiln for treating neodymium iron boron waste, comprising:
kiln head (1) and kiln tail smoke chamber (2), kiln tube (3) is arranged between kiln head (1) and kiln tail smoke chamber (2) in inclined rotation, driving mechanism (4) is arranged below kiln tube (3) to drive kiln tube (3) in circumferential direction;
the kiln head (1) is connected with a fuel bin (5) for supplying energy through combustion;
a blower (6) is arranged on one side of the kiln head (1) and blows air into the kiln tube (1) to drive heat transfer and also discharge smoke dust generated by sintering;
the top of one end of the kiln tail smoke chamber (2) close to the kiln tube (3) is provided with a feed hopper (7) extending into the kiln tube (3) for introducing waste;
one side of the feeding hopper (7) is provided with a smoke exhaust pipe (11) which is connected to the kiln tail smoke chamber (2), the joint of the smoke exhaust pipe (11) and the kiln tail smoke chamber (2) is provided with a filter plate (8) which is composed of filter plates (82) which are connected in a rotating way, and the filter plates (82) are mutually overturned and collided through the steam drive of a waste heat driving mechanism (9) in the kiln tail smoke chamber (2) for self-cleaning.
2. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 1, characterized in that: the utility model provides a filter (8) includes frame (81) and filter plate (82), frame (81) are the frame construction of rectangle, fix the bottom at smoke tube (11) of discharging fume, the interval rotation is provided with filter plate (82) in frame (81), one side of frame (81) is provided with the steam channel of waste heat actuating mechanism (9) intercommunication, in the one end of filter plate (82) stretches into steam channel, be connected with drive impeller (83), through the rotation of steam flow drive filter plate (82), the junction of filter plate (82) and frame (81) is provided with elastic component (84) and acts on filter plate (82) and frame (81) and restrict the initial angle of filter plate (82).
3. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 3, characterized in that: the filter plate (82) comprises an air collision plate (821) and impact teeth (822), wherein the air collision plate (821) is of a sheet-shaped plate structure, two groups of impact teeth (822) are arranged on the surface of the air collision plate (821), the impact teeth (822) are symmetrically arranged along the central axis of the air collision plate (821), and the impact teeth of the adjacent air collision plates (821) are arranged in a staggered mode.
4. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 1, characterized in that: the waste heat driving mechanism (9) comprises:
a preheating plate (91) with a cavity structure is fixed at two sides of the kiln tail smoke chamber (2), and one side is connected with a water inlet pipe for preheating water;
the evaporation chamber (92) is fixed on one surface of the kiln tail smoke chamber (2) opposite to the kiln tube (3), the evaporation chamber (92) and the preheating plate (91) are of a cavity structure and are mutually communicated, the evaporation chamber is used for storing steam, and a water outlet is formed in the tail end of the evaporation chamber (92);
the top of the evaporation chamber (92) is provided with a backlog cylinder (93) which is in air communication with the filter plate (8), the backlog cylinder (93) is of a hydraulic cylinder structure with initial pressure, the on-off of the air circuit is controlled according to the pressure, and the pressure is accumulated.
5. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 4, wherein: the evaporating chamber (92) is an arc-shaped plate, and the corresponding positions of the preheating plates (91) at the two sides are corresponding arc-shaped edges.
6. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 4, wherein: the preheating plate (91) includes:
an isolation channel (912), wherein the isolation channel (912) is arranged at the joint edge of the inner edge of the preheating disc (91) and the evaporation chamber (92), and the joint of the preheating disc (91) and the evaporation chamber (92) is arranged in the isolation channel (912);
the heat absorption channel (911) is in a shape of S, the rest positions except the isolation channel (912) in the preheating disc (91) are the heat absorption channel (911) in a shape of S, and two ends of the heat absorption channel are respectively connected to the water inlet and one end of the isolation channel (912).
7. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 4, wherein: the accumulation cylinder (93) comprises a communication cylinder (931) and an accumulation cylinder (934) which are communicated through a connecting seat (935), a first sliding block (932) and a second sliding block (936) are respectively arranged in the communication cylinder (931) and the accumulation cylinder (934), oil is filled between the first sliding block (932) and the second sliding block (936) for hydraulic transmission, an air duct (933) which is in air communication with the filter plate (8) is arranged on the side face of the communication cylinder (931), and a pressure spring (937) is arranged between the second sliding block (936) and the accumulation cylinder (934) to indirectly act on the first sliding block (932) so that the first sliding block (932) always keeps downward movement to cover the trend of the air duct (933).
8. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 7, wherein: the backlog cylinder (93) further comprises:
and an adjusting bolt (938), wherein an adjusting bolt (937) is connected to the connecting seat (935) at the connecting position of the connecting cylinder (921) and the pressure accumulating cylinder (934) in a threaded manner, so as to control the flow of the connecting channel.
9. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 7, wherein: the first sliding block (932) comprises a switching-on body (9321) and a delay sliding block (9322), the switching-on body (9321) is arranged in the communication cylinder (931) in a sliding mode to control the switching-on and switching-off of the air duct (933), a strip-shaped groove distributed along the sliding direction of the switching-on body (9321) is concavely formed in one side, corresponding to the air duct (933), of the switching-on body (9321), a channel communicated with the evaporation chamber (92) is formed in the bottom of the groove, and the delay sliding block (9322) with the length shorter than that of the groove is arranged in the groove in a sliding mode.
10. A rotary kiln main kiln for treating neodymium iron boron waste according to claim 1, characterized in that: one side of a kiln tail smoke chamber (2) at the lower side of the filter plate (8) is provided with a drawing type ash accumulation disc (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211694793.2A CN116164547A (en) | 2022-12-28 | 2022-12-28 | Rotary kiln main kiln for treating NdFeB waste |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211694793.2A CN116164547A (en) | 2022-12-28 | 2022-12-28 | Rotary kiln main kiln for treating NdFeB waste |
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| Publication Number | Publication Date |
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| CN116164547A true CN116164547A (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211694793.2A Pending CN116164547A (en) | 2022-12-28 | 2022-12-28 | Rotary kiln main kiln for treating NdFeB waste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117545210A (en) * | 2024-01-10 | 2024-02-09 | 江苏柏威建设有限公司 | Ventilating and radiating device of PLC control cabinet for industrial control system |
-
2022
- 2022-12-28 CN CN202211694793.2A patent/CN116164547A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117545210A (en) * | 2024-01-10 | 2024-02-09 | 江苏柏威建设有限公司 | Ventilating and radiating device of PLC control cabinet for industrial control system |
| CN117545210B (en) * | 2024-01-10 | 2024-03-19 | 江苏柏威建设有限公司 | Ventilating and radiating device of PLC control cabinet for industrial control system |
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