CN114932002A - Detachable discharging and screening device for dry mill - Google Patents
Detachable discharging and screening device for dry mill Download PDFInfo
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- CN114932002A CN114932002A CN202210395429.XA CN202210395429A CN114932002A CN 114932002 A CN114932002 A CN 114932002A CN 202210395429 A CN202210395429 A CN 202210395429A CN 114932002 A CN114932002 A CN 114932002A
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- discharging
- grate
- front plate
- sieve
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- 238000007599 discharging Methods 0.000 title claims abstract description 118
- 238000012216 screening Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 60
- 238000000227 grinding Methods 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 238000009837 dry grinding Methods 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000009191 jumping Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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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
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
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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
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of 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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/04—Safety devices
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention belongs to the field of ball mills, and particularly discloses a detachable discharging and screening device for a dry mill, which comprises a grid plate, a screen plate and a discharging support, wherein the discharging support comprises a plurality of discharging support frame units which are uniformly distributed along the circumferential direction of a mill cylinder, each discharging support frame unit comprises a fan-shaped front plate and a fan-shaped rear plate, a conical discharging plate which is obliquely arranged towards the grinding end of the center of the discharging support is arranged at the inner edge of the front plate, the conical discharging plates jointly enclose a conical discharging cone, the grid plate and the screen plate are sequentially arranged at the hollow part of the front plate from outside to inside along the radial direction of the front plate, the grid plate and the screen plate are respectively detachably connected with the front plate, and a split type unit discharging structure and a streamline material raising device are arranged, so that the unit discharging is facilitated, the manufacturing precision is improved, the field installation and the dismounting are convenient, and the deformation of an integral discharging structure caused by the cylinder processing or the hoisting and loading process is avoided, the grid plate is prevented from being difficult to assemble due to serious deformation, the labor intensity is reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the field of ball mills, and particularly discloses a detachable discharging and screening device for a dry mill.
Background
The discharge bin in the dry ball mill is a key part for realizing the grinding process, the main discharging function is to separate a grinding body and screen out materials, the grinding efficiency of the ball mill is directly related to the height of the grinding efficiency of the ball mill, in the running process, the materials reaching the fineness enter the discharge bin through the discharging grate plate along with the rotation of the mill, the materials are lifted to a certain height through the internal lifting plate, the materials slide or fall on the discharging cone along the lifting plate, slide into the discharging device by means of the taper of the discharging central cone, and finally discharge the mill, and the structural design of the discharge bin plays an important role in the grinding efficiency of the ball mill.
The conventional discharging bin is of an integral cylindrical and double-layer material passing structure, a front plate and a rear plate in the integral discharging structure are all round steel plates, the front plate, the rear plate, a material raising plate and a supporting arc plate are placed in a cylinder body when the cylinder body is welded in a rolling mode in the manufacturing process of a mill, the cylinder body of the mill is likely to deform during processing or hoisting and transferring in other procedures, the actual field installation condition is fed back, and the front plate and the rear plate are required to be reamed and repaired when a discharging grid plate of a device is installed, so that the labor is consumed, and the assembly period is prolonged; in addition, the discharging bin is provided with a supporting rib, and the discharging grate plate forms a double-layer material passing structure with the supporting frame through the supporting rib, the supporting tube and the supporting frame. The front plate of the support frame is connected with the fine sieve plate, the rear plate is connected with the discharge end cover, the discharge cone is positioned between the support front plate and the rear plate and is coaxial with the cylinder, the material raising plates are welded and fixed inside the support frame, the grate seam of the discharge grate plate is radial, the aperture ratio of the grate plate is low, ventilation and material passing are not facilitated, high-temperature materials ground in an over-grinding mode are accumulated at the discharge end, the temperature of the tile is raised due to heat conduction, and the service life of the tile supporting and the safe operation of equipment are directly influenced. After the grinding machine operates for a certain time, the abrasion of the discharging grid plate causes the enlargement of the grid seam size of the horn mouth on one side, the granularity of materials is difficult to control, the coarse phenomenon is caused, the service life of the grid plate is short, the discharging grid plate is of a double-layer structure, the width is large, the effective grinding length of two bins is occupied, the yield of the grinding machine is influenced, the double-layer material passing structure of the discharging bin is complex, and the quality of a single grid plate is large and the installation is inconvenient.
With the application of a semi-final grinding system and a combined grinding system, the granularity of the materials to be ground is small, the grading of a grinding body is much smaller than that of the prior art, the conventional discharging structure is not suitable for the prior art system, the phenomena of material accumulation and over-grinding are easily caused, and meanwhile, the potential safety hazards of high temperature, equipment jump stopping, tile burning and the like are caused because excessive material accumulation and unsmooth ventilation of the discharging part are caused. Meanwhile, in the running process of the mill, the whole surface of the discharging grid plate is worn, but the wear degrees are different, the middle ring belt is worn to the maximum degree and is called as a maximum wear area, the wear period of the grid plate of the discharging grid plate positioned in the maximum wear area is shorter than that of other parts, the maintenance and replacement amount is large, the production cost is wasted, and the equipment running rate is influenced.
Disclosure of Invention
In order to solve the problems in the background art, the invention discloses a detachable discharging screening device for a dry mill, which comprises a grid plate, a screen plate, a discharging support and a detachable single-layer filtering structure in a split type, so that the manufacturing precision is improved, the field installation and the disassembly are convenient, the labor intensity is reduced, and the production efficiency is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a detachable discharging screening device for a dry grinding machine comprises a grate plate, a screen plate and a discharging support, wherein the discharging support is arranged at the discharging end of the grinding machine, the discharging support comprises a plurality of discharging support frame units which are uniformly distributed along the circumferential direction of a grinding machine barrel body, the discharging support frame units respectively comprise a fan-shaped front plate and a fan-shaped rear plate which are arranged at intervals along the axial direction of the barrel body, the rear plate is attached to a web plate of the barrel body, the front plate and the rear plate are detachably connected with the web plate, a bottom plate is arranged between the outer edges of the front plate and the rear plate, a conical discharging plate which is obliquely arranged towards the center of the discharging support frame is arranged at the inner edge of the front plate, the conical discharging plates jointly form a conical discharging cone, a central screen plate is correspondingly arranged at one end, close to the front plate, of the discharging cone, a plurality of hollowed-out parts are arranged on the front plate along the radial direction of the front plate, and the grate plate and the screen plate are sequentially arranged at the hollowed-out from outside to inside along the radial direction of the front plate, the grate plate and the sieve plate are detachably connected with the front plate respectively, the grate plate, the sieve plate and the central sieve plate are arranged together to form a whole circle, grate gaps are uniformly distributed on the grate plate, sieve holes are uniformly distributed on the sieve plate, a rear lifting plate with a curved surface is arranged between the front plate and the rear plate, one end of the rear lifting plate is connected with the outer conical surface of the corresponding conical discharging plate, and the other end of the rear lifting plate extends towards the outer edge of the front plate along the curved surface.
Furthermore, the detachable discharging screening device for the dry mill is provided with a heat insulation layer between the discharging support and the inner wall of the cylinder body.
Furthermore, the sieve plate of the detachable discharging and screening device for the dry mill is connected with a discharging support through a pressing plate with a transverse rib structure, a hexagonal wear-resistant block and a bolt group.
Furthermore, a detachable unloading and screening device for the dry grinding machine is further provided with a supporting steel pipe between the front plate and the rear plate, and the front plate and the rear plate are connected with the web plate through bolt groups arranged in the supporting pipes in a penetrating mode.
Furthermore, the detachable discharging and screening device for the dry mill is characterized in that the screen plate is a stainless steel plate, and the pressing plate is a wear-resistant rolled steel plate.
Furthermore, a front lifting plate arranged in a curved surface manner is further arranged between the front plate and the rear plate of the detachable discharging screening device for the dry grinding machine, and the front lifting plate is arranged on the periphery of the rear lifting plate.
Furthermore, the detachable discharging and screening device for the dry mill is characterized in that a grid plate is connected to the outermost ring of the discharging support through a bolt group, grid seams uniformly distributed on the grid plate are concentric circles axially arranged along a barrel, the cross sections of the grid seams are double horn mouths, chamfered holes with angles equal to 90 are formed in one ends of the grid seams facing the grinding bin, and an inverted horn mouth is formed in one ends of the grid seams facing the grinding outlet end.
Furthermore, a central support is further arranged at the center of one end, close to the front plate, of the discharging cone, and the central support is connected with the cylinder web through a bolt group.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a detachable discharging screening device for a dry mill, which comprises a grid plate, a sieve plate, a discharging bracket and the like, wherein the discharging bracket comprises a plurality of discharging support frame units which are uniformly distributed along the circumferential direction of a mill cylinder, the discharging support frame units respectively comprise a fan-shaped front plate and a rear plate, a bottom plate is arranged between the outer edges of the front plate and the rear plate, a conical discharging plate which is obliquely arranged towards the grinding end of the center of the discharging bracket is arranged at the inner edge of the front plate, the rear plate, the bottom plate and the conical discharging plate jointly enclose a unit cavity, the conical discharging plate jointly encloses a conical discharging cone, a split type unit discharging structure and a streamline material raising arrangement are arranged, the unit discharging is facilitated, the effective grinding length of the mill is expanded, the discharging amount in unit time is increased to a certain extent, the grinding efficiency is improved, the manufacturing precision is improved, and the on-site installation and disassembly are facilitated, the deformation of the integral unloading structure caused by the barrel processing or hoisting and loading process is avoided, the grid plate is prevented from being difficult to assemble due to serious deformation, the workload of shape correction, repair and the like is greatly reduced, the labor intensity is reduced, and the production efficiency is improved;
the detachable discharging screening device for the dry grinding machine is characterized in that the discharging support is provided with the screen plate through the pressing plate, the stainless steel fine screen plate is adopted, the screen plates with different steel structures are prevented from adsorbing dust, blocking materials and passing grinding sites, the quality and the grinding efficiency of finished products are improved, meanwhile, the negative pressure in the mill is reduced, the energy consumption of the system is reduced, the ventilation volume and the material passing volume are increased, the quality and the grinding efficiency of the finished products are improved, the pressing plate adopts a transverse rib structure, the transverse rib is positioned in a maximum abrasion area, the abrasion of the materials and a grinding body on the screen plate is effectively reduced, and the service life of the screen plate is prolonged;
the detachable discharging screening device for the dry grinding machine is characterized in that a heat insulation layer is arranged between the discharging support and the inner wall of the cylinder body and adopts a heat insulation layer structure, so that heat is reduced from being transferred to the discharging support tile, the temperature of the tile is reduced to a certain extent, and potential safety hazards such as jumping stop of the grinding machine, tile burning and the like are prevented.
Drawings
FIG. 1 is a schematic side view of the discharge screening apparatus of the present invention;
FIG. 2 is a schematic cross-sectional view of the discharge screening apparatus of the present invention;
FIG. 3 is a schematic cross-sectional view of the discharge support frame of the present invention;
FIG. 4 is a schematic view of the front view structure of the unloading support frame of the present invention;
figure 5 is a schematic view of the structure of a screen panel according to the invention;
FIG. 6 is a schematic view of the structure of the press plate of the present invention;
FIG. 7 is a schematic view of a cross-sectional structure of a grate plate according to the present invention;
in the above figures: 1-a grid plate A; 2-a grid plate B; 2.1-a grid plate body; 2.2-chamfered holes; 2.3-reverse bell mouth; 3-hexagonal anti-abrasion blocks; 4, pressing a plate; 4.1-bolt hole A; 4.2-horizontal strengthening ribs; 4.3-discharge hole; 4.4-side support plate; 5-protecting the plate; 6-central sieve plate; 7-unloading support frame unit; 7.1-a bottom plate; 7.2-rear panel; 7.3-supporting the steel pipe; 7.4-front panel; 7.5-conical stripper plate; 7.6-front material raising plate; 7.7-rear material raising plate; 8-a heat insulation layer; 9-a cylinder body; 10-bolt group; 11-a web; 12-sieve plate; 12.1-sieve plate body; 12.2-bolt hole B; 12.3-mesh; 13-central support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
With reference to the attached drawings 1-7, the detachable discharging screening device for the dry mill of the invention is elaborated in detail, which comprises a grate plate, a screen plate 12 and a discharging support, wherein the discharging support is arranged at the discharging end of the mill, the discharging support comprises a plurality of discharging support frame units 7 uniformly distributed along the circumferential direction of a mill cylinder 9, the discharging support frame units 7 are of a fan-shaped structure, the discharging support frame units 7 respectively comprise fan-shaped front plates 7.4 and rear plates 7.2 which are arranged at intervals along the axial direction of the cylinder 9, the rear plates 7.2 are attached to a web plate 11 of the cylinder 9, the stress condition is good, the front plates 7.4 and the rear plates 7.2 are detachably connected with the web plate 11, a bottom plate 7.1 is arranged between the outer edges of the front plates 7.4 and the rear plates 7.2, a conical discharging plate 7.5 which is obliquely arranged towards the grinding end of the center of the discharging support is arranged at the inner edge of the front plate 7.4, the front plates 7.4, the rear plates 7.2, the bottom plate 7.1 and the conical discharging plate 7.5 jointly enclose a unit cavity, the conical discharging plates 7.5 jointly enclose a conical discharging cone, a central sieve plate 6 is correspondingly arranged at one end of the discharging cone, which is close to the front plate 7.4, a plurality of hollowed parts are arranged on the front plate 7.4 along the radial direction of the front plate, a grate plate and a sieve plate 12 are sequentially arranged at the hollowed parts along the front plate 7.4 from outside to inside along the radial direction of the front plate 7.4, the grate plate and the sieve plate 12 are respectively detachably connected with the front plate 7.4, the grate plate, the sieve plate 12 and the central sieve plate 6 are jointly arranged to form a whole circle, the grate plate comprises a grate plate A1 and a grate plate B2, the grate plate A1 is connected to the outermost ring of the discharging bracket through a bolt group 10, the grate plate B2 is connected to the secondary outer ring of the discharging bracket through the bolt group 10, the detachable combined type anti-blocking grate plate can prevent high-temperature materials at the grinding end from being accumulated, prevent the materials from being over ground and being bonded, thereby affecting the quality of cement finished products, the grate plate A1 and the grate plate B2 respectively comprise a grate plate body 2.1, the grate joint is uniformly distributed on the grate plate body 2.1 and is a concentric circle arranged along the axial direction of the barrel body 9, the original radial shape of the grate joint is changed into the concentric circle, the aperture ratio is increased to 8.5% from less than 4%, the cross section of the grate joint is a double-horn mouth, one end of the grate joint, facing a grinding bin, is a chamfer hole 2.1 with the angle equal to 90, the grate joint has the function of automatically cleaning a grinding body and oversize materials, the blockage is avoided, the end of the grate joint, facing a grinding outlet end, is a reverse horn mouth 2.3, the material granularity is effectively controlled, the service life of the grate plate is prolonged to a certain extent, the middle section of the grate joint is a straight line section, the precision of the grate joint is ensured to be unchanged after the grate joint is worn for a period, the material granularity can be controlled in a longer period, sieve pores 12.3 are uniformly distributed on the sieve plate 12, the sieve plate 12 is a wear-resistant rolled steel plate, the stamping mode is adopted, the sieve mesh amount is large and uniform, the material granularity can be accurately controlled, the coarse leakage is avoided, and the disassembly and the replacement are convenient; the sieve plate 12 is connected to the discharging support through a pressing plate, a transverse rib structure is adopted, and a transverse rib is positioned in a maximum abrasion area of the mill, so that abrasion of materials and grinding bodies on the sieve plate is reduced, and the service life of the sieve plate is prolonged;
a rear lifting plate 7.7 arranged in a curved surface manner is further arranged between the front plate 7.4 and the rear plate 7.2, one end of the rear lifting plate 7.7 is connected with the outer conical surface of the corresponding conical discharging plate 7.5, the other end of the rear lifting plate extends towards the outer edge direction of the front plate 7.4 along the curved surface, a front lifting plate 7.6 arranged in a curved surface manner is further arranged between the front plate 7.4 and the rear plate 7.2, the front lifting plate 7.6 is arranged at the periphery of the rear lifting plate 7.7, the front lifting plate 7.6 and the rear lifting plate 7.7 are in spiral material guiding, the material is quickly discharged, the abrasion of a lining plate of a transmission connecting pipe is reduced, and the material level of a second bin is controlled, the ventilation is improved, and the quick discharge is facilitated;
when the unloading support frame unit 7 is assembled into the whole unloading support in the cylinder, the conical unloading plates 7.5 together enclose a conical unloading cone, materials with proper sizes can enter the cavity of the unloading support through the slits of the grate plates and the sieve pores 12.3 of the sieve plate 12, are lifted to a certain height through the front material raising plates 7.6 and the rear material raising plates 7.7, then slide down on the outer surface of the central unloading cone along the front material raising plates 7.6, and are smoothly discharged by virtue of the conicity of the cone, so that the structure is convenient for smoothly guiding and unloading materials, has the function of strengthening support, is convenient for rapidly guiding out the materials in the cavity along the conical surface when a mill runs, improves the grinding efficiency, can not only rapidly guide out finished materials from the grinding bin through the front material raising plates 7.6 and the rear material raising plates 7.7, but also prevent the coarse materials and grinding bodies in the grinding bin from flowing into the grinding bin, is convenient for material circulation, and improves the material accumulation condition of the drying bin, the efficiency of mill is improved, and the support frame unit 7 of unloading, comb board and sieve 12 have can dismantle the function in the use, can freely dismantle through the manhole mouth of mill barrel, can avoid integral unloading supporting structure to lead to warping because of barrel processing or hoist and mount shipment process, prevent to lead to the fact the comb board to be difficult to assemble because of warping seriously, reduce work load such as orthopedic, repair by a wide margin, improve production efficiency.
As an optional design, the detachable discharging screening device for the dry grinding machine is preferably provided with the heat insulation layer 8 between the discharging support and the inner wall of the cylinder 9, the heat insulation layer 8 is arranged to eliminate the hidden danger of high-temperature gas accumulation at the position, the heat of a high-temperature material is isolated from being transferred to the discharging bearing bush from the position, the temperature of the bearing bush is reduced to a certain extent, and the potential safety hazards of jumping and stopping of the grinding machine, burning of the bearing bush and the like are prevented.
As an optional design, preferably, the detachable discharging screening device for the dry mill is characterized in that a screen plate 12 is connected with a discharging support through a pressure plate 4 with a transverse rib structure, a hexagonal anti-abrasion block 3 and a bolt group 10, the screen plate 12 is a stainless steel plate, the pressure plate 4 is an abrasion-resistant rolled steel plate, the screen plate 12 comprises a fan-shaped screen plate body 12.1, screen holes 12.3 are uniformly distributed in the middle of the screen plate body 12.1, a plurality of bolt holes B12.2 are formed in the edge of the screen plate body 12.1 at intervals, the pressure plate 4 comprises an integrally formed transverse reinforcing rib 4.2 and a side support plate 4.4, a discharging hole 4.3 is formed in the center of the pressure plate 4 at a position corresponding to the screen hole 12.3 on the screen plate 12, a plurality of bolt holes A4.1 are formed in the edge of the pressure plate 4 at intervals, the bolt holes A4.1 correspond to the positions of the bolt holes B12.2, the screen plate 12 and the pressure plate 4 are connected with the discharging support through the bolt group 10 penetrating through the bolt holes A4.1, the bolt holes B12.2 and the support steel pipe 7.3, the hexagonal anti-abrasion block 3 comprises a circular outer ring and a hexagonal inner ring bolt hole, the circular outer ring is provided with a sunken handle joint, the middle part of the hexagonal wear-resistant block 3 is provided with a bolt hole which axially penetrates through the hexagonal wear-resistant block 3, the bolt head of a bolt group 10 is embedded in the hexagonal inner ring of the hexagonal wear-resistant block 3, the bolt body of the bolt group 10 is arranged in the bolt hole of the hexagonal wear-resistant block 3 in a penetrating way, the hexagonal wear-resistant block 3 is adopted to prevent the bolt head from being impacted and worn by a grinding body, so that the serious safety accident caused by the fact that a grate plate or a pressing plate 4 cannot be fixed due to damage of the bolt head is avoided, the pressing plate 4 adopts a transverse rib structure, the transverse rib is positioned in a maximum wear area, the wear of materials and the grinding body on the sieve plate 12 is effectively reduced, the service life of the sieve plate 12 is prolonged, the sieve holes 12.3 are large in quantity and uniform in distribution, the material granularity can be accurately controlled, the coarse leakage is avoided, the disassembly and the replacement are convenient, the through hole rate of the sieve holes 12.3 on the sieve plate 12 is improved to be more than 30% from the conventional 5%, the ventilation volume and the material passing volume are increased, material accumulation, material blockage and an over-grinding site are avoided, and the quality of finished products and the grinding efficiency are improved.
As an optional design, preferably, the detachable discharging and screening device for the dry grinding machine is characterized in that a supporting steel pipe 7.3 is further arranged between the front plate 7.4 and the rear plate 7.2, the front plate 7.4 and the rear plate 7.2 are connected with the web plate 11 through a bolt group 10 arranged in the supporting pipe in a penetrating mode, the supporting steel pipe 7.3 plays a role in strengthening the rigidity of the discharging support, meanwhile, the bolts are protected from being corroded by materials, and the service life of the bolts is prolonged.
As an optional design, preferably, the detachable discharging and screening device for the dry mill is characterized in that a protection plate 5 is further arranged between the web plate 11 and the rear plate 7.2, a central support 13 is further arranged at the center of one end, close to the front plate 7.4, of the discharging cone, the central support 13 is connected with the protection plate 5 and the web plate 11 of the cylinder 9 through a bolt group 10, the protection plate 5 structure is adopted, the cylinder is effectively prevented from being worn, and the service life of equipment is prolonged.
When the grinding machine is installed, the unloading support frame units 7 enter the grinding machine through a manhole of a grinding machine barrel, a plurality of unloading support frame units 7 are arranged and combined into a full-circle unloading support, the conical unloading plates 7.5 jointly enclose a conical unloading cone, the unloading support frame units 7 are fixed on a web plate of the barrel 13 through the bolt groups 8, when the grinding machine operates, materials with proper sizes enter a cavity of the unloading support through a grate seam of the grate plate and a sieve pore 12.3 of the sieve plate 12, the materials are lifted to a certain height through the front material raising plate 7.6 and the rear material raising plate 7.7 and then slide along the front material raising plate 7.6 to the outer surface of the central unloading cone, the materials are smoothly discharged by means of the taper of the cone, the grinding efficiency is improved, the deformation of an integral unloading structure caused by the barrel processing or hoisting and loading process is avoided, the grate plate is prevented from being difficult to assemble due to serious deformation, the workload of reshaping, repairing and matching and the like is greatly reduced, the production efficiency is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a detachable screening plant of unloading for dry process mill, characterized by: the discharging support is arranged at the discharging end of the mill, the discharging support comprises a plurality of discharging support frame units which are uniformly distributed along the circumferential direction of a cylinder body of the mill, the discharging support frame units respectively comprise a fan-shaped front plate and a fan-shaped rear plate which are arranged along the axial direction of the cylinder body at intervals, the rear plate is attached to a web plate of the cylinder body, the front plate and the rear plate are detachably connected with the web plate, a bottom plate is arranged between the outer edges of the front plate and the rear plate, a conical discharging plate which is obliquely arranged towards the center of the discharging support frame is arranged at the inner edge of the front plate, the conical discharging plate jointly encloses into a conical discharging cone, a central sieve plate is correspondingly arranged at one end, close to the front plate, of the discharging cone, a plurality of hollowed parts are radially arranged on the front plate, the perforated plate and the sieve plate are sequentially arranged at the hollowed parts from outside to inside along the radial direction of the front plate, and the perforated plate and the sieve plate are detachably connected with the front plate respectively, the grate plate, the sieve plate and the central sieve plate are arranged together to form a whole circle, grate gaps are uniformly distributed on the grate plate, sieve holes are uniformly distributed on the sieve plate, a rear material raising plate with a curved surface is further arranged between the front plate and the rear plate, one end of the rear material raising plate is connected with the outer conical surface of the corresponding conical discharging plate, and the other end of the rear material raising plate extends towards the outer edge of the front plate along the curved surface.
2. The removable discharge screen apparatus for a dry mill as set forth in claim 1, wherein: a heat insulation layer is arranged between the discharging support and the inner wall of the cylinder body.
3. The removable discharge screen apparatus for a dry mill as set forth in claim 1 or 2, wherein: the sieve plate is connected with the discharging support through a pressure plate with a transverse rib structure, a hexagonal wear-resistant block and a bolt group.
4. The removable discharge screen apparatus of claim 3, wherein: and a support steel pipe is also arranged between the front plate and the rear plate, and the front plate and the rear plate are connected with the web plate through bolt groups arranged in the support pipe in a penetrating way.
5. The removable discharge screen apparatus of claim 3, wherein: the sieve plate is a stainless steel plate, and the pressing plate is a wear-resistant rolled steel plate.
6. The removable discharge screen apparatus of claim 3, wherein: a front lifting plate with a curved surface is arranged between the front plate and the rear plate, and the front lifting plate is arranged at the periphery of the rear lifting plate.
7. The removable discharge screen apparatus of claim 3, wherein: the grate plate is connected to the outermost ring of the discharging support through a bolt group, grate seams uniformly distributed on the grate plate are concentric circles arranged along the axial direction of the barrel, the cross sections of the grate seams are double horn mouths, chamfer holes with the angles equal to 90 are formed in the end, facing the grinding bin, of the grate seams, and an anti-horn mouth is formed in the end, facing the grinding outlet end, of the grate seams.
8. The removable discharge screen apparatus of claim 3, wherein: the center of one end of the discharging cone body, which is close to the front plate, is also provided with a center support, and the center support is connected with the cylinder web plate through a bolt group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210395429.XA CN114932002A (en) | 2022-04-15 | 2022-04-15 | Detachable discharging and screening device for dry mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210395429.XA CN114932002A (en) | 2022-04-15 | 2022-04-15 | Detachable discharging and screening device for dry mill |
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| Publication Number | Publication Date |
|---|---|
| CN114932002A true CN114932002A (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210395429.XA Pending CN114932002A (en) | 2022-04-15 | 2022-04-15 | Detachable discharging and screening device for dry mill |
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| CN (1) | CN114932002A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203220938U (en) * | 2013-05-10 | 2013-10-02 | 唐山冀东装备工程股份有限公司 | Split type discharging grid plate for mill |
| CN205495726U (en) * | 2016-03-07 | 2016-08-24 | 中信重工机械股份有限公司 | A non - uniform thickness ejection of compact comb board for dry process ball mill |
| CN205700844U (en) * | 2016-05-05 | 2016-11-23 | 中信重工机械股份有限公司 | A kind of device for discharging for dry method ball mill |
| CN209438801U (en) * | 2018-12-07 | 2019-09-27 | 上海新建重型机械有限公司 | Ball mill sieve material device |
| CN212237538U (en) * | 2020-04-29 | 2020-12-29 | 山东章鼓耐研新材料科技有限公司 | Take superfine powder discharge apparatus of overflow |
-
2022
- 2022-04-15 CN CN202210395429.XA patent/CN114932002A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203220938U (en) * | 2013-05-10 | 2013-10-02 | 唐山冀东装备工程股份有限公司 | Split type discharging grid plate for mill |
| CN205495726U (en) * | 2016-03-07 | 2016-08-24 | 中信重工机械股份有限公司 | A non - uniform thickness ejection of compact comb board for dry process ball mill |
| CN205700844U (en) * | 2016-05-05 | 2016-11-23 | 中信重工机械股份有限公司 | A kind of device for discharging for dry method ball mill |
| CN209438801U (en) * | 2018-12-07 | 2019-09-27 | 上海新建重型机械有限公司 | Ball mill sieve material device |
| CN212237538U (en) * | 2020-04-29 | 2020-12-29 | 山东章鼓耐研新材料科技有限公司 | Take superfine powder discharge apparatus of overflow |
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Application publication date: 20220823 |