CN108787048B - Grinding and screening device for dry ball mill with ceramic balls as grinding medium - Google Patents
Grinding and screening device for dry ball mill with ceramic balls as grinding medium Download PDFInfo
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- CN108787048B CN108787048B CN201810750136.2A CN201810750136A CN108787048B CN 108787048 B CN108787048 B CN 108787048B CN 201810750136 A CN201810750136 A CN 201810750136A CN 108787048 B CN108787048 B CN 108787048B
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- 238000000227 grinding Methods 0.000 title claims abstract description 159
- 239000000919 ceramic Substances 0.000 title claims abstract description 49
- 238000012216 screening Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 90
- 238000007599 discharging Methods 0.000 claims abstract description 59
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 230000008093 supporting effect Effects 0.000 claims description 16
- 230000004913 activation Effects 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000007873 sieving Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000003213 activating effect Effects 0.000 abstract description 3
- 230000001976 improved effect Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- B02C17/04—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 unperforated container
- B02C17/06—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 unperforated container with several compartments
-
- 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
-
- 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
-
- 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
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material
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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
- B02C17/1885—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone the applied gas acting to effect material separation
-
- 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
- B02C17/20—Disintegrating members
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a grinding and screening device for a dry ball mill with ceramic balls as grinding media, which comprises a crushing bin and a grinding bin, wherein the front end of the crushing bin is provided with a feeding pipe communicated with the crushing bin, and the rear end of the grinding bin is provided with a discharging pipe communicated with the grinding bin; a first rapid material guiding device is arranged in a material feeding pipe of the crushing bin, a high-inclination ladder lining plate is arranged in the crushing bin, and a gas material separation bin device is arranged between the crushing bin and the grinding bin; the corrugated lining plates are fixedly paved on the inner wall of the grinding bin, the T-shaped activating lining plates are installed at intervals, the small-diameter ball blocking ring is installed at the rear part of the inner wall of the grinding bin, the discharging screening device is installed at the tail part of the inner wall of the grinding bin, and the second rapid material guiding device is arranged in the discharging pipe of the grinding bin. The invention not only meets the performance requirement that the ceramic balls are grinding media and avoids the potential safety hazard of accumulated materials, but also expands the effective grinding length of the ball mill, can increase the grinding amount in unit time to a certain extent and improves the grinding efficiency.
Description
Technical Field
The invention belongs to the technical field of ball mills, and particularly relates to a grinding and screening device for a dry ball mill with ceramic balls as grinding media.
Background
At present, more and more cement factories use ceramic balls as grinding bodies of a dry ball mill to reduce energy consumption and improve economic benefit. Therefore, the development of a ball mill grinding device using ceramic balls as grinding bodies is a necessary choice for adapting to market demands. Although the ceramic balls have obvious advantages such as energy conservation when being applied to a cement grinding system, the ceramic balls are different from steel balls in density, filling rate and grading, and the yield is reduced by adopting a grinding machine structure designed according to the steel balls as grinding bodies at present, so that the novel grinding structure with the ceramic balls as grinding media plays a vital role in reducing the energy consumption of the system and improving the yield.
The ceramic ball has the volume weight of 2.2t/m 3 and the volume weight of 4.5t/m 3 of the steel ball, and is characterized in that compared with the steel ball as a grinding body, the ceramic ball has the main characteristics that: the loading capacity is small, and the filling rate is high. Therefore, the grinding structure of the dry ball mill needs to be designed according to the characteristics of the grinding body. Compared with the steel ball, the ceramic ball grinding body has weaker grinding capability, so that the grinding capability of the ceramic ball is compensated, on one hand, the filling rate is increased to be about 40%, and on the other hand, the flow rate of materials is required to be slowed down, and the grinding time of the materials in the grinding body is prolonged. Therefore, the crushing bin and the grinding bin of the grinding structure are required to be newly designed to meet the working condition requirement that the ceramic balls are grinding media.
Disclosure of Invention
In order to solve the problems, the invention aims to provide the grinding and screening device for the dry ball mill taking the ceramic balls as the grinding medium, which has reasonable structural design, strong applicability and high grinding efficiency, not only meets the performance requirement that the ceramic balls are the grinding medium, avoids the potential safety hazard of accumulated materials, but also 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.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
A grinding and screening device for a dry ball mill taking ceramic balls as grinding media comprises a crushing bin and a grinding bin, wherein the front end of the crushing bin is provided with a feeding pipe communicated with the crushing bin, and the rear end of the grinding bin is provided with a discharging pipe communicated with the grinding bin; a first rapid material guiding device is arranged in a material feeding pipe of the crushing bin, a high-inclination ladder lining plate is arranged in the crushing bin, and a gas material separation bin device is arranged between the crushing bin and the grinding bin; the corrugated lining plates are fixedly paved on the inner wall of the grinding bin, the T-shaped activating lining plates are installed at intervals, the small-diameter ball blocking ring is installed at the rear part of the inner wall of the grinding bin, the discharging screening device is installed at the tail part of the inner wall of the grinding bin, and the second rapid material guiding device is arranged in the discharging pipe of the grinding bin.
The first quick material guiding device of the grinding and screening device for the dry ball mill taking the ceramic balls as grinding media adopts spiral blades which are respectively welded on the inner wall of the feeding pipe.
The grinding and screening device for the dry ball mill taking the ceramic balls as grinding media is characterized in that a high-inclination stepped liner plate is arranged in a crushing bin, the surface of the stepped liner plate is of a groove structure, and the stepped liner plate is uniformly distributed along the circumferential direction of the inner wall of the crushing bin and is in a stepped shape.
The grinding and screening device for the dry ball mill taking ceramic balls as grinding media comprises a support frame, wherein the support frame is a torus, the side wall of the support frame is fixed on the inner wall between a crushing bin and a grinding bin through bolts, a top plate and a bottom plate are formed by welding a plurality of fan-shaped grate plates and are circular, a sieve plate is arranged on the grate plate, a curved arc-shaped lifting plate is arranged in the middle of the grate plate, a plurality of grate plate holes are formed in the grate plate, a conical discharging body welded by a plurality of steel plates is arranged in the inner ring of the torus support frame and is coaxial with the inner ring, and the large opening end of the conical discharging body faces the crushing bin and the small opening end faces the grinding bin; the small opening end of the conical discharging body is connected with the bottom plate of the torus supporting frame, and a discharging cavity is formed between the inner ring of the torus supporting frame and the outer wall of the conical discharging body.
The surface of the corrugated lining plate of the grinding and screening device for the dry ball mill taking the ceramic balls as grinding media is corrugated.
A grinding screening plant for using dry process ball mill of ceramic ball as grinding medium, its a plurality of T type activation welt is radial installation in grinding storehouse inner wall and constitutes the ring form, and is located between the adjacent ripple welt, T type activation welt is by along the whole casting of grinding storehouse axial arrangement's of radially arranged sector plate and bottom along grinding storehouse cylindric buckled plate, the sector plate is equipped with the waist shape slot hole along radial, the topside is equipped with big ripple face, be equipped with little ripple face and fixed orifices on the cylindric buckled plate.
The grinding and screening device for the dry ball mill taking the ceramic balls as grinding media comprises a split type discharging support frame, wherein the split type discharging support frame is composed of a plurality of support frame units uniformly distributed along the circumferential direction of the inner wall of a grinding bin, each support frame unit is fixedly provided with a combined anti-blocking grid plate towards the outer side surface of the grinding bin through bolt connection, the center of each support frame unit is provided with a material guide cone, and the material guide cone is provided with a central screen plate.
Further, the combined anti-blocking grate plate comprises a discharging grate plate and a fine screen plate, wherein the discharging grate plate is fixedly connected with the support frame unit through bolts, double horn mouth grate seams are formed in the grate plate, and the screen plate is located on the inner side face of the grate plate and is provided with a pressing strip at the joint of the screen plate and the support frame unit.
Further, a heat insulation layer is arranged between the split type discharging support frame and the inner wall of the grinding bin.
The second quick material guiding device of the grinding and screening device for the dry ball mill taking the ceramic balls as grinding media adopts spiral blades which are welded on the inner wall of the discharge pipe.
By adopting the technical scheme, the invention has the following advantages:
The invention is used for grinding and screening the device of the dry ball mill which takes the ceramic balls as grinding media, the first quick material guiding device and the second quick material guiding device of the grinding and screening device adopt spiral blade structures and rotate along with the ball mill, so that materials can quickly enter a grinding bin or lead out qualified finished products, and the problem of material accumulation is solved; the large-inclination stepped lining plate increases the grinding area of the material and the ceramic ball medium, is beneficial to improving the height of the large-particle material and effectively increases the crushing strength; the gas-material separation bin device simplifies the manufacturing process, improves the manufacturing precision, is convenient for field installation, lifts materials on curved surfaces, improves the material circulation, expands the effective grinding length of the ball mill, increases the discharging amount in unit time to a certain extent, and improves the grinding efficiency; the discharging and screening device adopts a split discharging structure, which is favorable for unit discharging, improves discharging efficiency, adopts a punching fine screen plate, controls fineness of the grinding materials, improves screening performance, and prevents accumulation of the grinding end materials; has the characteristics of strong applicability, universality and interchangeability.
Drawings
FIG. 1 is a schematic view of the structure of a grinding and sieving apparatus for a dry ball mill using ceramic balls as grinding media according to the present invention;
fig. 2 is a schematic view of the structure of the gas-material separation compartment apparatus in fig. 1;
FIG. 3 is a schematic view of the cross-sectional structure of the A-A direction of FIG. 2;
FIG. 4 is a schematic view of the structure of the activation liner of FIG. 1;
FIG. 5 is a schematic view of the B-B cross-sectional structure of FIG. 4;
FIG. 6 is a schematic view of the discharge screening device of FIG. 1;
FIG. 7 is a schematic view of the cross-sectional structure of the A-A direction of FIG. 6;
fig. 8 is a schematic view of the structure of the screen deck of fig. 6;
FIG. 9 is a schematic view of the structure of the grate plate of FIG. 6;
In the figure: 1. a first rapid material guiding device; 2. a step lining plate; 3. a gas-material separation compartment device; 4. a corrugated lining plate; 5. activating the lining plate; 6. a ball blocking ring; 7. a discharge screening device; 8. a second rapid material guiding device; 3-1, a supporting frame; 3-2, a lifting blade; 3-3, a conical discharging body; 3-4, unloading cavity; 3-5, fan-shaped grid plates; 5-1, large corrugated surface; 5-2, waist-shaped long holes; 5-3, sector plates; 5-4, small corrugated surfaces; 5-5, fixing holes; 7-1, a heat insulation layer; 7-2, a discharging support frame; 7-3, discharging grate plates; 7-4, layering; 7-5, screen plate; 7-6, a material guiding cone; 7-7, a central sieve plate; 7-8, guard plates.
Detailed Description
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
As shown in fig. 1 to 9, the grinding and screening device for the dry ball mill taking ceramic balls as grinding media comprises a crushing bin and a grinding bin, wherein the front end of the crushing bin is provided with a feeding pipe communicated with the crushing bin, and the rear end of the grinding bin is provided with a discharging pipe communicated with the grinding bin; the first rapid material guiding device 1 is arranged in the feeding pipe of the crushing bin, the first rapid material guiding device 1 adopts the helical blades, the helical blades are respectively welded on the inner wall of the feeding pipe, materials can be rapidly guided into the crushing bin through the helical blades under the rotary operation of the ball mill, the materials and ceramic grinding bodies in the crushing bin can be prevented from entering the crushing bin, potential safety hazards such as accumulation and blocking of a feeding hole are prevented, and the operation rate of equipment is effectively improved; a highly-inclined ladder lining plate 2 is arranged in the crushing bin, and a gas-material separation bin device 3 is arranged between the crushing bin and the grinding bin; the corrugated lining plates 4 are fixedly paved and installed on the inner wall of the grinding bin, the surfaces of the corrugated lining plates are corrugated, T-shaped activation lining plates 5 are installed at intervals, the small-diameter ball blocking rings 6 are installed at the rear part of the inner wall of the grinding bin, the diameter of the inner cavity of each small-diameter ball blocking ring is 500-1000 mm, the flow rate of grinding bodies and materials can be greatly controlled, and the ceramic ball medium can be prevented from flowing; the discharging screening device 7 is installed at the afterbody, be provided with the quick guider of second 8 in the discharging pipe of grinding storehouse, the quick guider of second adopts helical blade, helical blade welds in the discharging pipe inner wall, under ball mill gyration operation, not only can export the grinding storehouse fast with the finished product material through helical blade, can prevent too thick material and ceramic grinding body in the grinding storehouse from scurring into this department moreover, prevent the potential safety hazard such as discharge gate long-pending material, putty, the circulation of the material of being convenient for has improved the long-pending material condition of stoving storehouse, the rate of operation of ball mill has effectively been improved.
The highly-inclined stepped liner plate 2 is arranged in the crushing bin, the surface of the stepped liner plate is of a groove structure, and the stepped liner plate is uniformly distributed along the circumference of the inner wall of the crushing bin and is stepped. The groove structure on the surface of the stepped liner plate enables the surface area to be larger, increases the grinding area of materials and ceramic ball media, and improves the grinding efficiency of the materials; the gradient of the stepped lining plate is larger, and is 5% -15% larger than that of the lining plate in the crushing bin in the prior art, so that the impact of crushing materials by the ceramic grinding medium is increased, and the crushing efficiency is improved more effectively; the step-shaped lining plate is beneficial to free throwing, falling and crushing of materials along the circumferential direction of the ball mill along steps; the high-inclination ladder structure is beneficial to improving the height of large-particle materials, effectively increases the crushing force, ensures that the materials can be fully crushed in the crushing bin, improves the activity of the materials, and provides a good foundation for better grinding subsequently.
The gas-material separation bin device 3 comprises a supporting frame 3-1, wherein the supporting frame is a ring body, the side wall of the supporting frame is fixed on the inner wall between a crushing bin and a grinding bin through bolts, a top plate and a bottom plate are formed by welding a plurality of fan-shaped grate plates 3-5 and are circular, a sieve plate is arranged on the grate plates, a curved arc-shaped lifting plate 3-2 is arranged in the middle of the grate plates, a plurality of grate holes are formed in the grate plates, a conical discharging body 3-3 welded by a plurality of steel plates is arranged in the inner ring of the ring body supporting frame and is coaxial with the ring body, the large opening end of the conical discharging body faces the crushing bin and the small opening end faces the grinding bin, an air flow channel in the conical discharging body is used for circulating air in the ball mill, and a fine sieve plate is adopted near the crushing bin, so that partial too coarse materials and ceramic balls are prevented from entering the fine grinding bin, and the effects of gas-material separation and material screening are achieved; the small opening end of the cone-shaped unloading body is connected with the bottom plate of the torus support frame, and an unloading cavity 3-4 is formed between the inner ring of the torus support frame and the outer wall of the cone-shaped unloading body. The structural design of the support frame is convenient for material circulation, improves the situation of accumulation of the compartment and improves the efficiency of the ball mill; the structure of the grate plate not only prolongs the service life, but also can automatically clean the grate plate to avoid blocking; the conical discharging body is used for gas circulation in the ball mill, and a fine screen plate is arranged close to the crushing bin to prevent partial coarser materials and ceramic balls from entering the fine grinding bin; the unloading cavity is convenient for lead out the material in the cavity from along the conical surface fast when the ball mill operates, improves grinding efficiency.
The T-shaped activation lining plates are radially arranged on the inner wall of the grinding bin to form a circular ring, are positioned between the adjacent corrugated lining plates 4, are made of wear-resistant alloy materials, improve wear resistance and service life, are integrally cast by a sector plate 5-3 radially arranged along the grinding bin and a cylindrical corrugated plate axially arranged at the bottom of the sector plate along the grinding bin, are radially provided with waist-shaped long holes 5-2, the top edge of each sector plate is provided with a large corrugated surface 5-1, and the cylindrical corrugated plate is provided with a small corrugated surface 5-4 and a fixing hole 5-5. The T-shaped activated lining plate has the advantages of good mechanical property, uniform stress and low loss, is convenient for fully grinding small-particle materials, prevents ceramic ball media from channeling, improves the activity of the materials, has better performance of controlling the flow rate of the materials, and is more suitable for grinding materials of the ceramic media. During installation, the ring-shaped activation lining plate is fixed on the inner wall of the grinding bin at the preset position of the ball mill through the fixing holes 5-5 at the bottom by bolts, and the ring-shaped activation lining plate is completed after the installation.
The discharging screening device 7 comprises a split discharging supporting frame 7-2, the split discharging supporting frame is composed of a plurality of supporting frame units which are uniformly distributed along the circumferential direction of the inner wall of the grinding bin, each supporting frame unit is fixedly connected with a combined anti-blocking grate plate through bolts towards the outer side face of the grinding bin, the combined anti-blocking grate plate is formed by a discharging grate plate 7-3 and a fine screen plate 7-5, the discharging grate plate is fixedly connected with the supporting frame units through bolts, the discharging grate plate is made of cast wear-resistant alloy steel, double-horn-mouth grate seams are arranged on the discharging grate plate, the wear resistance is improved, the self-cleaning is realized, blocking of materials is prevented, the material thickness is avoided, the service life is prolonged, the fine screen plate is positioned on the inner side face of the grate plate and is provided with a pressing strip 7-4 at the joint of the supporting frame unit, the fine screen plate is made of wear-resistant rolled steel plates, the granularity is greatly improved in a punching mode, the material thickness is avoided, and the disassembly and the replacement are convenient; the combined anti-blocking grate plate can prevent the high temperature of the grinding end, effectively prevent the abrasion of the cylinder body and prolong the service life of equipment; the other lateral surface of the support frame unit is a blind plate which is fixedly connected to the barrel web through a bolt, the center of the support frame unit is provided with a guide cone 7-6, the guide cone is provided with a central sieve plate 7-7, the end part of the blind plate is provided with a protection plate 7-8, the support frame 7-2 and the protection plate 7-6 are fixedly connected to the barrel web through bolts, the barrel web is protected from abrasion, and the service life of the barrel of the ball mill is prolonged.
The heat insulation layer 7-1 is arranged between the split type discharging support frame 7-2 and the inner wall of the grinding bin, so that overheated materials are prevented from transmitting heat to the discharging bearing bush through the heat insulation layer, the bearing bush temperature is reduced to a certain extent, and potential safety hazards such as jumping stop and bearing bush burning of the grinding machine are prevented.
When the ball mill rotates, materials quickly enter a crushing bin of the ball mill along the spiral direction of a spiral blade through a first quick material guide device 1 of a feed pipe, are continuously lifted to a high position under the action of a highly-inclined stepped liner plate 2 which is uniformly distributed along the axial direction, and are thrown off and crushed into tiny particles under the intense impact of the materials and the ceramic ball medium in the crushing bin, the materials enter a support frame 3-1 through a gas-material separation bin separation device 3 through a double-horn-mouth grate seam of a fan-shaped grate plate 3-5, and enter a discharge cavity 3-4 formed with the outer edge of a conical discharge body 3-3 along a curved arc-shaped material lifting plate 3-2, so that the materials in the discharge cavity 3-4 can be conveniently and quickly guided into a grinding bin from the position when the ball mill runs; the material entering the grinding bin collides with the ceramic ball medium under the action of the corrugated lining plate 4 and the T-shaped activation lining plate 5, the material is fully ground, the large corrugated surface 5-1 is used for controlling the flow rate of the material, the material collides with the ceramic ball medium more severely under the action of the radial lifting long holes 5-2 and the reinforcing ribs 5-6, the grinding length of the material is prolonged to a certain extent, the grinding area is increased, the grinding efficiency is improved, and the small corrugated surface 5-4 ensures the continuity of the ground material; the materials entering the discharging screening device 7 enter a cavity of the discharging supporting frame 7-2 through screening actions of the screen plate 7-5 and the discharging grate plate 7-3, and the materials with proper size are further fully ground, and the materials ground to a certain fineness are discharged into a rapid discharging end guiding device 8 along the outer edge of the guiding cone 7-6; the material guiding cone 7-6 and the central fine screening plate 7-7 control the material levels of the two bins, improve ventilation and facilitate rapid unloading.
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 (8)
1. The grinding and screening device for the dry ball mill taking ceramic balls as grinding media comprises a crushing bin and a grinding bin, wherein the front end of the crushing bin is provided with a feeding pipe communicated with the crushing bin, the rear end of the grinding bin is provided with a discharging pipe communicated with the grinding bin, a first rapid material guiding device is arranged in the feeding pipe of the crushing bin, a corrugated lining plate is fixedly paved and installed on the inner wall of the grinding bin, and a second rapid material guiding device is arranged in the discharging pipe of the grinding bin; the method is characterized in that: a highly-inclined ladder lining plate is arranged in the crushing bin; the gas-material separation bin device comprises a support frame, the support frame is a ring body, the side wall of the support frame is fixed on the inner wall between the crushing bin and the grinding bin through bolts, a top plate and a bottom plate are formed by welding a plurality of fan-shaped grate plates and are circular, a sieve plate is arranged on the grate plates, a curved arc-shaped lifting plate is arranged in the middle of the grate plates, a plurality of grate plate holes are formed in the grate plates, a conical discharging body welded by a plurality of steel plates is arranged in the inner ring of the support frame of the ring body and is coaxial with the inner ring, and the large opening end of the conical discharging body faces the crushing bin and the small opening end faces the grinding bin; the small opening end of the conical discharging body is connected with the bottom plate of the torus supporting frame, and a discharging cavity is formed between the inner ring of the torus supporting frame and the outer wall of the conical discharging body; t-shaped activation lining plates are arranged on the inner wall of the grinding bin at intervals, a plurality of T-shaped activation lining plates are radially arranged on the inner wall of the grinding bin to form a circular ring and are positioned between adjacent corrugated lining plates, each T-shaped activation lining plate is formed by integrally casting a sector plate radially arranged along the grinding bin and a cylindrical corrugated plate axially arranged along the grinding bin at the bottom, a waist-shaped long hole is formed in the radial direction of the sector plate, a large corrugated surface is arranged at the top edge of the sector plate, and a small corrugated surface and a fixing hole are formed in each cylindrical corrugated plate; a small-diameter ball blocking ring is arranged at the rear part of the inner wall of the grinding bin, the tail part is provided with a discharging and screening device.
2. The grinding and sieving apparatus for a dry ball mill with ceramic balls as grinding media according to claim 1, characterized in that: the first quick material guiding device adopts helical blades which are respectively welded on the inner wall of the feeding pipe.
3. The grinding and sieving apparatus for a dry ball mill with ceramic balls as grinding media according to claim 1, characterized in that: the high-inclination stepped lining plate is arranged in the crushing bin, the surface of the stepped lining plate is of a groove structure, and the stepped lining plate is uniformly distributed along the circumferential direction of the inner wall of the crushing bin and is stepped.
4. The grinding and sieving apparatus for a dry ball mill with ceramic balls as grinding media according to claim 1, characterized in that: the surface of the corrugated lining plate is corrugated.
5. The grinding and sieving apparatus for a dry ball mill with ceramic balls as grinding media according to claim 1, characterized in that: the discharging and screening device comprises a split discharging support frame, wherein the split discharging support frame is composed of a plurality of support frame units uniformly distributed along the circumferential direction of the inner wall of a grinding bin, a combined anti-blocking grid plate is fixedly arranged on the outer side face of each support frame unit, facing the grinding bin, through bolt connection, a material guiding cone is arranged in the center of each support frame unit, and a center screen plate is arranged on each material guiding cone.
6. The grinding and sieving apparatus for a dry ball mill with ceramic balls as grinding media according to claim 5, characterized in that: the combined anti-blocking grate plate comprises a discharging grate plate and a fine screen plate, wherein the discharging grate plate is fixedly connected with a support frame unit through bolts, double horn mouth grate seams are formed in the grate plate, and a pressing strip is arranged at the joint of the screen plate, which is located on the inner side surface of the grate plate, and the support frame unit.
7. The grinding and sieving apparatus for a dry ball mill with ceramic balls as grinding media according to claim 5, characterized in that: a heat insulation layer is arranged between the split type discharging support frame and the inner wall of the grinding bin.
8. The grinding and sieving apparatus for a dry ball mill with ceramic balls as grinding media according to claim 1, characterized in that: the second quick material guiding device adopts a helical blade which is welded on the inner wall of the discharge pipe.
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| CN201810750136.2A CN108787048B (en) | 2018-07-10 | 2018-07-10 | Grinding and screening device for dry ball mill with ceramic balls as grinding medium |
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| CN201810750136.2A CN108787048B (en) | 2018-07-10 | 2018-07-10 | Grinding and screening device for dry ball mill with ceramic balls as grinding medium |
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Families Citing this family (4)
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| CN112191332B (en) * | 2020-09-22 | 2022-11-04 | 长治市碳谷科技孵化器有限公司 | Drum-type coal gangue crusher |
| CN112892748B (en) * | 2021-02-24 | 2024-06-07 | 潍坊市和成工程机械制造有限公司 | Lime grinding and digestion integrated machine |
| CN112958231A (en) * | 2021-02-26 | 2021-06-15 | 佛山市恒力泰机械有限公司 | Ball mill discharge end structure and ball mill cylinder |
| CN115096764A (en) * | 2022-06-02 | 2022-09-23 | 中建材（合肥）粉体科技装备有限公司 | Method for measuring particle distribution in material cake |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2822772Y (en) * | 2005-07-21 | 2006-10-04 | 江苏科行环境工程技术有限公司 | Air swept type drying mill |
| CN104069918A (en) * | 2014-06-18 | 2014-10-01 | 中信重工机械股份有限公司 | Efficient energy-saving tube mill |
| CN105772175A (en) * | 2016-03-07 | 2016-07-20 | 中信重工机械股份有限公司 | Interchangeable drying bin-separating device for air-swept coal mill |
| CN208906095U (en) * | 2018-07-10 | 2019-05-28 | 中信重工机械股份有限公司 | For using Ceramic Balls as the grinding screening plant of the dry method ball mill of abrasive media |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB125012A (en) * | 1918-09-30 | 1919-04-10 | Ray Chauncey Newhouse | Comminuting Mill. |
| FR1528390A (en) * | 1966-06-23 | 1968-06-07 | Smidth & Co As F L | Grinding process and crusher for its implementation |
| RU57147U1 (en) * | 2006-01-10 | 2006-10-10 | Белгородский государственный технологический университет им. В.Г. Шухова (БГТУ им. В.Г. Шухова) | TUBE MILL |
| CN201768589U (en) * | 2010-07-27 | 2011-03-23 | 四川矿山机器（集团）有限责任公司 | Sieving partition panel for ball mill |
| CN205887030U (en) * | 2016-07-22 | 2017-01-18 | 天津水泥工业设计研究院有限公司 | A ball mill for grinding super powder coal ash |
-
2018
- 2018-07-10 CN CN201810750136.2A patent/CN108787048B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2822772Y (en) * | 2005-07-21 | 2006-10-04 | 江苏科行环境工程技术有限公司 | Air swept type drying mill |
| CN104069918A (en) * | 2014-06-18 | 2014-10-01 | 中信重工机械股份有限公司 | Efficient energy-saving tube mill |
| CN105772175A (en) * | 2016-03-07 | 2016-07-20 | 中信重工机械股份有限公司 | Interchangeable drying bin-separating device for air-swept coal mill |
| CN208906095U (en) * | 2018-07-10 | 2019-05-28 | 中信重工机械股份有限公司 | For using Ceramic Balls as the grinding screening plant of the dry method ball mill of abrasive media |
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