CN113976257B - Drying type air-sweeping mill - Google Patents
Drying type air-sweeping mill Download PDFInfo
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- CN113976257B CN113976257B CN202111080796.2A CN202111080796A CN113976257B CN 113976257 B CN113976257 B CN 113976257B CN 202111080796 A CN202111080796 A CN 202111080796A CN 113976257 B CN113976257 B CN 113976257B
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- drying
- grinding
- lining plate
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- bin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/186—Adding fluid, other than for crushing by fluid energy
- B02C17/1875—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/22—Lining for containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
- F26B11/0481—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum the elements having a screw- or auger-like shape, or form screw- or auger-like channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
- F26B25/12—Walls or sides; Doors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention provides grinding equipment of a dry ball mill with a drying bin, which not only meets the performance requirements of various materials for grinding, avoids potential safety hazards of accumulated materials, reduces the water content of coal dust and eliminates oil pollution, but also expands the effective grinding length of the ball mill, and can increase the grinding amount per unit time to a certain extent and improve the grinding efficiency.
Description
Technical field:
the invention belongs to the technical field of ball mills, and mainly relates to a drying type air-swept mill.
The background technology is as follows:
the drying type air-sweeping mill is a mechanical device for grinding materials such as coal dust, petroleum coke and the like, a drying bin is generally additionally arranged for drying the materials with certain moisture, and then steel balls are used as grinding media for sieving and grinding the dried materials, so that finished products with the granularity required by industry are manufactured. The drying type air-swept mill is a relatively advanced grinding preparation device in the powder making system technology in the building material industry, the electrolytic aluminum industry, the coal chemical industry and the like in China at present.
In recent years, the development of the equipment technology is mainly embodied in the aspects of energy conservation, environmental protection, automation and the like. With the increase of the scale of cement process production lines, the new energy automobile industry is vigorous in development of aluminum battery requirements, and mechanical equipment is also continuously enlarged, so that the application prospect of the drying type air brushing machine is wider, and the specification of the drying type air brushing machine is larger. Therefore, in order to meet the requirements of the market on large-scale, high-efficiency, energy-saving and environment-friendly drying type air-swept mill, the structure of the drying type air-swept mill is required to be innovatively designed, but the large-scale air-swept mill with drying function is low in grinding efficiency, low in transmission reliability, easy in accumulation, high in tile temperature, easy to jump and stop, slipping of a mill and other potential safety hazards, and meanwhile, the problems that the content of water in coal dust is high and products are easy to pollute oil products are solved.
The invention comprises the following steps:
the invention provides a drying type air-swept mill, which aims to overcome the defects that a large-sized air-swept mill has low grinding efficiency and low transmission reliability, is easy to accumulate materials, is easy to jump and stop due to the rising of tile temperature, is slipped by a mill, has high water content of coal dust and is easy to pollute products by oil products.
The invention solves the technical problems by adopting the technical scheme that:
the drying air-sweeping mill comprises a rotating part, wherein one end of the rotating part is provided with a rapid material guiding device, the other end of the rotating part is provided with a rapid material guiding device, a gear transmission structure is arranged on the rotating part close to the rapid material guiding device along the circumferential direction, the gear transmission structure is connected with a transmission device, and a slipper bearing is arranged on the rotating part close to the rapid material guiding device along the circumferential direction;
the rotary part is internally provided with a compartment device which divides the rotary part into a drying compartment and a grinding compartment, the compartment device comprises a plurality of fixing frames, the fixing frames are distributed along the circumferential direction of the inner ring of the rotary part and are fixed on the inner wall of the rotary part through bolts, the fixing frames are provided with detachable baffles, the baffles can cover the top of the fixing frames and the side surface of the baffles, which are positioned on one side of the drying compartment, so that materials are prevented from entering the fixing frames, the other side of the fixing frames is provided with a supporting plate, the side surface of the supporting plate, which faces the grinding compartment, is provided with a plurality of grate plates, the other side surface of the supporting plate is provided with a lining plate, the annular part surrounded by the supporting plate is provided with a conical discharging body, the inner ring of the conical discharging body is fixed with a discharging central plate through the bolt assemblies, a lifting plate is arranged between the lining plate and the baffles, one end of the lifting plate is fixedly connected with the outer side of the conical discharging body through the bolts, and the other end of the lifting plate is fixed through the baffles and is tightly pressed on the lining plate; the materials in the drying bin are sent into the outer channel of the conical discharging body through the lifting plate, and then sent into the grinding bin.
The inside helical blade that is equipped with of quick guider of stoving storehouse tip.
The drying bin is characterized in that drying lifting plates are arranged on the inner wall of the drying bin and are spirally distributed on the inner wall of the drying bin, vertical plates of the drying lifting plates are curved surfaces, the drying lifting plates are integrated, holes with symmetrical angles are formed, and the drying bin is suitable for air-swept grinders with different rotation directions.
The grinding bin is divided into a primary breaking section, a grinding section and a fine grinding section, wherein a corrugated ladder lining plate is arranged on the inner wall of the primary breaking section, a grading lining plate with an inclined angle and a small corrugated lining plate are arranged on the inner wall of the grinding section at intervals, and a small corrugated lining plate is arranged on the inner wall of the fine grinding section.
The inner wall of the discharging end of the grinding bin is provided with an end lining plate, the end lining plate is an outer ring end lining plate, a middle ring end lining plate and an inner ring end lining plate from the periphery to the inside, and the thickness of the middle ring end lining plate is larger than that of the outer ring end lining plate and the inner ring end lining plate.
The bevel gear wheel hub of the gear transmission structure is matched with the transmission shaft of the transmission device through a flat key, and fastening devices are arranged in key grooves at two ends of the flat key.
The fastening device comprises an inner conical rigid body, an outer conical rigid body, an elastic inner ring, an elastic outer ring and a tension bolt, wherein the inner conical rigid body and the outer conical rigid body are respectively assembled between the elastic inner ring and the elastic outer ring and are fixed by the tension bolt, the elastic inner ring is attached to the outer surface of the transmission shaft, and the elastic outer ring is attached to the inner wall of the bevel gear hub.
By adopting the technical scheme, the invention has the following advantages:
the invention provides a drying type air-sweeping mill, and provides grinding equipment of a dry ball mill with a drying bin, which has the advantages of reasonable structural design, strong applicability and high grinding efficiency, meets the performance requirements of grinding various materials, avoids the potential safety hazard of accumulated materials, reduces the moisture of coal dust, avoids the pollution of oil products, expands the effective grinding length of the ball mill, can increase the grinding amount per unit time to a certain extent, and improves the grinding efficiency.
Description of the drawings:
FIG. 1 is a schematic view of the structure of a turn-around part of the present invention;
FIG. 2 is a half cross-sectional view of D-D of FIG. 1;
FIG. 3 is a cross-sectional view of E-E of FIG. 1;
fig. 4 is a schematic perspective view of the compartment means;
fig. 5 is a side view of the compartment means;
FIG. 6 is a schematic illustration of the connection of a bevel gear to a drive shaft;
in the figure: 1. a turning part; 2. grinding bin; 3. a drying bin; 4. a compartment device; 5. a rapid material guiding device; 6. a rapid deriving device; 7. a fastening device; 8. a hub; 9. a flat key; 10. a transmission shaft;
21. corrugated ladder lining board; 22. a grading lining plate; 23. a small corrugated lining plate; 24. an outer ring end lining plate; 25. a middle ring end lining plate; 26. an inner ring end lining plate;
31. drying the lifting plate;
41. a fixing frame; 42. a support plate; 43. a baffle; 44. a grate plate; 45. a lining plate; 46. a lifting plate; 47. a conical discharge body; 48. a discharge center plate;
71. an elastic outer ring; 72. an elastic inner ring; 73. tensioning a bolt; 74. an inner conical rigid body; 75. an outer conical rigid body;
the specific embodiment is as follows:
the present invention will be explained in more detail by the following examples, and the purpose of the present invention is to protect all changes and modifications within the scope of the present invention, but the present invention is not limited to the following examples;
the drying air-sweeping mill shown in combination with fig. 1, 4 and 5 comprises a rotating part 1, wherein one end of the rotating part 1 is provided with a quick material guiding device 5, the other end of the rotating part 1 is provided with a quick material guiding device 6, the rotating part 1 close to the quick material guiding device 6 is provided with a gear transmission structure along the circumferential direction, the gear transmission structure is connected with the transmission device, and the rotating part 1 close to the quick material guiding device 5 is provided with a slipper bearing along the circumferential direction;
the rotary part 1 is internally provided with a compartment device 4, the compartment device 4 divides the rotary part 1 into a drying compartment 3 and a grinding compartment 2, the compartment device 4 comprises a plurality of fixing frames 41, the fixing frames 41 are distributed along the circumferential direction of the inner ring of the rotary part 1 and are fixed on the inner wall of the rotary part 1 through bolts, the fixing frames 41 are provided with detachable baffle plates 43, the top of the fixing frames 41 and the side surfaces of the baffle plates 43 on one side of the drying compartment 3 can be covered by the baffle plates 43, materials are prevented from entering the fixing frames 41 to wear bolt assemblies, the other side of the fixing frames 41 is provided with a supporting plate 42, the side surface of the supporting plate 42 facing the grinding compartment 2 is provided with a plurality of grid plates 44, the other side surface of the supporting plate 42 is provided with a lining plate 45, an annular part surrounded by the supporting plate 42 is provided with a conical discharging body 47, the inner ring of the conical discharging body 47 is fixed with a discharging central plate 48 through a bolt assembly, a lifting plate 46 is arranged between the lining plate 45 and the baffle plates 43, one end of the lifting plate 46 is fixedly connected with the outer side of the conical discharging body 47 through bolts, and the other end of the lifting plate is fixed through the baffle plates 43 and is tightly pressed on the lining plate 45; the material in the drying bin 3 is sent to the outer channel of the conical discharging body 47 through the lifting plate 46, and then sent to the grinding bin 2.
The rotary part 1 of the mill is a part for mainly drying and grinding materials, the slipper bearing is a device for supporting the rotary part 1 to move, and the transmission device is a device for transmitting torque to the mill and driving the rotary part 1 of the mill to rotate. The materials enter the quick material guiding device 5 of the mill from the feeding equipment, the materials are quickly guided into the mill barrel through the spiral blades in the quick material guiding device, fall into the drying bin 3 of the rotary part 1, the drying bin 3 is internally provided with the drying material lifting plates 31 which are spirally distributed, raw coal containing water is subjected to strong heat exchange and dried at the drying bin, when the materials dried by the drying bin pass through the bin separation device 4, the material lifting plates 46 can form better material curtains when the mill rotates, so that the materials and hot air can be better subjected to heat exchange, the drying efficiency is improved, the materials can be lifted to a certain height through the material lifting plates 46, then slide on the outer surface of the conical material discharging body 47 along the taper of the material lifting plates 46, the materials are smoothly discharged to the grinding bin 2 by means of the taper, the hot air flow in the mill enters the grinding bin 2 from the discharging 48 which directly passes through the conical material discharging body 47, the air flow is prevented from mixing with the air, the drying efficiency is improved, the grinding body with larger diameter and the material can be dropped or discharged at a certain speed under the action of a certain lifting capacity along with the mill, the coal grinding mill is continuously impacted, and the coal dust can be quickly discharged out of the special coal dust grinding device 6 through the coal dust guiding device.
The compartment device 4 is convenient for smooth material guiding and discharging, and has the function of reinforcing support. The material raising plates 46 on the compartment device 4 and the baffle plates 43 on the fixing frame 41 are connected through bolts, so that the material raising plates 46 are detachable, dead angles are reduced, cost is reduced, and meanwhile material accumulation is improved by reducing or increasing the number of the material raising plates 46 and reasonably arranging the butt joint positions of the material raising plates 46 and the conical discharging bodies 47 according to the change of the amount of the materials to be ground. When the rotation direction of the mill is changed to the opposite direction, the baffle plate 43 of the group fixing frame 41 is required to be removed, the lifting plate 46 is rotated 180 degrees, and the baffle plate 43 of the fixing frame 41 is reinstalled after the corresponding bolt holes are connected. In this way, the material can be guided in the direction of the mill axis under the rotation direction, so that the compartment device 4 can be used more flexibly.
As shown in fig. 1, a spiral blade is arranged in the quick material guiding device at the end part of the drying bin.
Under the dual effects that the feeding chute of the feed inlet of the traditional air-sweeping mill is provided with a certain inclination and the air inlet is filled with hot air at about 280 ℃, materials are rapidly thrown into the cylinder drying bin through the feeding chute, and the throwing position is a certain distance from the starting point of the mill, so that the drying length is shortened. Under the rotary operation of the mill, the material can be quickly guided into the starting position of the drying bin through the spiral blade, the effective drying length is prolonged, the sufficient heat exchange of the material is promoted, the drying efficiency is improved, the moisture of coal dust is reduced, and the quality of a finished product is improved.
As shown in fig. 1 and 2, the inner wall of the drying bin 3 is provided with drying and lifting boards 31, the drying and lifting boards 31 are spirally distributed on the inner wall of the drying bin 3, and the vertical boards of the drying and lifting boards 31 are curved surfaces. The drying lifting plate 31 is connected with the drying bin 3 through bolts.
The conventional drying bin 3 and the drying and lifting plates 31 are welded, are large in number and compact in distribution along the circumference, so that the height of the vertical plates of the drying and lifting plates 31 is limited, the lifting effect is influenced, the vertical plates are parallel to the rotation axis of the mill, and the drying and lifting plates cannot guide materials along the axis when rotating along with the mill, thereby increasing dead angles of equipment and facilitating formation of accumulated materials and caking. The drying and lifting plate 31 is integrated and is provided with hole sites with symmetrical angles, so that the drying and lifting plate is suitable for wind-sweeping grinders with different rotation directions and is distributed on a cylinder liner in a dispersing way. The number of the circumference distribution of the drying lifting plates 31 is reduced by half compared with that of the conventional lifting plates, the heights of the vertical plates are increased, and the vertical plates are arranged in a spiral manner at an angle with the rotation axis of the mill. Therefore, as the mill rotates, the material flows along the axis under the action of the drying and lifting plate 31, and a better material curtain can be formed, so that the material flow, accumulation and agglomeration phenomena are improved, and the drying efficiency is improved.
As shown in fig. 1, the grinding bin 2 is divided into a primary breaking section a, a grinding section B and a fine grinding section C, wherein a corrugated stepped lining plate 21 is arranged on the inner wall of the primary breaking section a, a stepped lining plate 22 with an inclined angle and a small corrugated lining plate 23 are arranged on the inner wall of the grinding section B at intervals, and a small corrugated lining plate 23 is arranged on the inner wall of the fine grinding section C.
Compared with the conventional grinding bin, the double-compartment grinding bin is omitted, so that the effective grinding space in the grinding bin can be increased, the ventilation resistance in the grinding bin is reduced, the problem of blocking of a grate seam is solved, the maintenance cost of the double-compartment grinding bin can be saved, the corrugated stepped lining plate 21 is positioned at the initial breaking section A and mainly plays a role in lifting and breaking, the high-inclination stepped lining plate 22 and the small corrugated lining plate 23 are positioned at the original double-compartment grinding bin and the grinding section B, the high-inclination stepped lining plate 22 can enable grinding bodies to be gradually decreased from a feeding end to a discharging end along the axial direction of a cylinder, the spherical diameter of the grinding bodies is matched with the particle size of materials to be ground, and the lifting capacity of the grinding bodies can be enhanced by the corrugations on the working surface of the grinding bodies. The classifying lining plates 22 with large inclined angles can prevent the ball from being blown, control the flow rate of materials and prevent grinding media from being blown, the small corrugated lining plates 23 have larger surface area, the materials move along with the mill under the action of the two lining plates which are alternately arranged, and gradually move towards the end lining plates of the mill tail, the end lining plates of the mill tail and the small corrugated lining plates 23 grind the materials further, and qualified materials enter the rapid guiding-out device through the discharging spiral tube of the mill tail, and a finished product is formed.
As shown in fig. 1 and 3, an end lining board is arranged on the inner wall of the discharging end of the grinding bin, the end lining board is an outer ring end lining board 24, a middle ring end lining board 25 and an inner ring end lining board 26 from the periphery to the inside, and the thickness of the middle ring end lining board 25 is larger than that of the outer ring end lining board 24 and the inner ring end lining board 26.
The invention adopts the latest abrasion theory to thicken the most worn part of the middle ring end lining plate 25 and divide the ring again reasonably. The installation is assembled in such a way that the thin outer ring end lining plate 24-the thick middle ring end lining plate 25-Bao Najuan end lining plate 26, and the bolts are re-tightened with the running of the mill to prevent the end lining plate from loosening under the actions of impact, grinding and extrusion. When the mill operates for a certain period, as the mill discharging part is different in abrasion condition between the grinding body and the material opposite end lining plate along the circumferential direction, in the same period, the middle ring is more seriously abraded than the outer ring and the inner ring discharging grate plate, and the end lining plate can be integrally replaced in the same period by arranging the end lining plates with different thicknesses, so that the consistency of replacement and disassembly of the end lining plates is improved, and the running rate of the mill is improved.
As shown in fig. 6, the bevel gear hub 8 of the gear transmission structure is matched with the transmission shaft 10 of the transmission device through a flat key 9, and fastening devices 7 are arranged in key grooves at two ends of the flat key 9.
The fastening device 7 comprises an inner conical rigid body 74, an outer conical rigid body 75, an elastic inner ring 72, an elastic outer ring 71 and a tension bolt 73, wherein the inner conical rigid body 74 and the outer conical rigid body 75 are respectively assembled between the elastic inner ring 72 and the elastic outer ring 71 and are fixed by the tension bolt 73, the elastic inner ring 72 is attached to the outer surface of the transmission shaft 10, and the elastic outer ring 71 is attached to the inner wall of the bevel gear hub 8.
According to the invention, the flat key 9 is utilized to carry out small clearance fit on the transmission shaft 10 on the transmission device and the bevel gear hub 8 of the gear transmission structure, the centering property and the matching precision of the transmission shaft 10 and the bevel gear are ensured through the extrusion of the flat key 9 and the side surface of the key groove, and the radial rotation of the mill is realized through torque transmission; the inner tapered rigid body 74 and the outer tapered rigid body 75 are respectively assembled between the elastic inner ring 72 and the elastic outer ring 71, and are fixed by the tension bolts 73, and then are assembled at the gap between the transmission shaft and the bevel gear hub 8, as shown in fig. 6, when the tension bolts 73 are screwed, both the inner tapered rigid body 74 and the outer tapered rigid body 75 move inwards, the diameter of the elastic inner ring 72 is reduced to press the transmission shaft 10 by the conical action, the diameter of the elastic outer ring 71 is increased to expand the hub, and the static friction force generated in the radial direction along with the increase of the axial tension force can not only transmit torsion to realize the radial rotation of the mill, but also bear the axial force of the bevel gear to the transmission shaft 10 to prevent the axial movement of the transmission shaft 10 when the mill works. The rigid connection characteristic of the flat key 9 and the conical surface structure of the elastic ring determine the trend of strict coincidence of the central lines of the transmission shaft 10 and the pinion hub 8, so that the concentricity precision is improved, the smaller and more stable the deflection error of the gear rotation is, and the transmission noise is greatly reduced; meanwhile, the anti-impact elastic rubber has certain torsional elasticity, the anti-impact capability is greatly improved, the life cycle is prolonged, and the maintenance and replacement cost is saved.
The novel drying type air-swept mill has the key effects of improving grinding efficiency, improving transmission reliability, avoiding potential safety hazards such as accumulation of materials, jump stop caused by rising of tile temperature, slipping of a mill and the like, reducing moisture of coal dust, improving products, avoiding pollution of oil products, expanding the application field of the mill and improving product quality. The problems of slipping, lubricating oil leakage of the sliding shoe bearing, dust invasion and the like of the shaft hub connection part of the traditional ball mill in China are thoroughly solved, the stability of the shaft hub transmission of the ball mill is improved, the noise in the transmission is reduced, the life cycle of open gear transmission is prolonged, the maintenance and replacement cost of the shaft hub connection part is reduced, a large amount of manpower and time are saved, and the goals of 'consumption reduction, greenization and reliability' of the ball mill are realized to the greatest extent.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (3)
1. A stoving air brushing mill, its characterized in that: the device comprises a rotating part, wherein one end of the rotating part is provided with a rapid material guiding device, the other end of the rotating part is provided with a rapid material guiding device, a gear transmission structure is arranged on the rotating part close to the rapid material guiding device along the circumferential direction, the gear transmission structure is connected with the transmission device, and a slipper bearing is arranged on the rotating part close to the rapid material guiding device along the circumferential direction;
the rotary part is internally provided with a compartment device which divides the rotary part into a drying compartment and a grinding compartment, the compartment device comprises a plurality of fixing frames, the fixing frames are distributed along the circumferential direction of the inner ring of the rotary part and are fixed on the inner wall of the rotary part through bolts, the fixing frames are provided with detachable baffles, the baffles can cover the top of the fixing frames and the side surface of the baffles, which are positioned on one side of the drying compartment, so that materials are prevented from entering the fixing frames, the other side of the fixing frames is provided with a supporting plate, the side surface of the supporting plate, which faces the grinding compartment, is provided with a plurality of grate plates, the other side surface of the supporting plate is provided with a lining plate, the annular part surrounded by the supporting plate is provided with a conical discharging body, the inner ring of the conical discharging body is fixed with a discharging central plate through the bolt assemblies, a lifting plate is arranged between the lining plate and the baffles, one end of the lifting plate is fixedly connected with the outer side of the conical discharging body through the bolts, and the other end of the lifting plate is fixed through the baffles and is tightly pressed on the lining plate; the materials in the drying bin are sent to an outer channel of the conical discharging body through a lifting plate, and then sent to a grinding bin;
spiral blades are arranged in the quick material guiding device at the end part of the drying bin;
the inner wall of the drying bin is provided with drying lifting plates which are spirally distributed on the inner wall of the drying bin, and vertical plates of the drying lifting plates are curved surfaces;
the drying lifting plate is integrated and provided with hole sites with symmetrical angles, and the drying lifting plate is connected with the drying bin through bolts;
the grinding bin is divided into a primary breaking section, a grinding section and a fine grinding section, wherein a corrugated ladder lining plate is arranged on the inner wall of the primary breaking section, a grading lining plate with an inclined angle and a small corrugated lining plate are arranged on the inner wall of the grinding section at intervals, and a small corrugated lining plate is arranged on the inner wall of the fine grinding section;
the inner wall of the discharging end of the grinding bin is provided with an end lining plate, the end lining plate is an outer ring end lining plate, a middle ring end lining plate and an inner ring end lining plate from the periphery to the inside, and the thickness of the middle ring end lining plate is larger than that of the outer ring end lining plate and the inner ring end lining plate.
2. A drying air sweeper as defined in claim 1, wherein: the bevel gear wheel hub of the gear transmission structure is matched with the transmission shaft of the transmission device through a flat key, and fastening devices are arranged in key grooves at two ends of the flat key.
3. A drying air sweeper as defined in claim 2, wherein: the fastening device comprises an inner conical rigid body, an outer conical rigid body, an elastic inner ring, an elastic outer ring and a tension bolt, wherein the inner conical rigid body and the outer conical rigid body are respectively assembled between the elastic inner ring and the elastic outer ring and are fixed by the tension bolt, the elastic inner ring is attached to the outer surface of the transmission shaft, and the elastic outer ring is attached to the inner wall of the bevel gear hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN115196892B (en) * | 2022-04-11 | 2023-11-24 | 广德独山南方水泥有限公司 | Environment-friendly medium alkali silicate cement clinker and production process thereof |
| CN116576639B (en) * | 2023-07-14 | 2023-09-19 | 山东一美生物科技有限公司 | Soft capsule forming device and soft capsule production process |
| CN117029383B (en) * | 2023-08-09 | 2024-02-13 | 唐山冀东发展机械设备制造有限公司 | Multistage drying and grading device of drying coal mill |
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