CN203725201U - Medium-speed vertical mill applied to petroleum coke grinding - Google Patents
Medium-speed vertical mill applied to petroleum coke grinding Download PDFInfo
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- CN203725201U CN203725201U CN201420071450.5U CN201420071450U CN203725201U CN 203725201 U CN203725201 U CN 203725201U CN 201420071450 U CN201420071450 U CN 201420071450U CN 203725201 U CN203725201 U CN 203725201U
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- Prior art keywords
- middling speed
- grinding stone
- speed vertical
- oil coke
- stone oil
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- 238000000227 grinding Methods 0.000 title claims abstract description 129
- 239000002006 petroleum coke Substances 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 17
- 239000000571 coke Substances 0.000 claims description 71
- 239000004575 stone Substances 0.000 claims description 71
- 238000003466 welding Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 244000309464 bull Species 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 35
- 238000010586 diagram Methods 0.000 description 6
- 238000003801 milling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 235000015111 chews Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
A medium-speed vertical mill applied to petroleum coke grinding comprises a grinding device, wherein the grinding device comprises a grinding roll assembly and a grinding disc assembly, the grinding roll assembly comprises a grinding roll and a grinding roll sleeve, the grinding disc assembly is provided with a liner plate, the width of the grinding roll sleeve is increased by at least 10 mm on the original basis, the thickness of the liner plate is increased by at least 20 mm, and the wrap angle of the grinding roll is decreased by at least 38.45 degrees. Compared with the prior art, the medium-speed vertical mill has the benefits as follows: on the basis of a conventional ZGM medium-speed coal mill, the grinding curve is optimized, the grinding efficiency is improved, and the service life of the whole mill after the improvement is prolonged substantially; a hydraulic oil pipeline system and a rotary separator are optimized through a hydraulic variable loading system, the operation stability of the medium-speed vertical mill applied to petroleum coke grinding is guaranteed due to arrangement of a water spray device, the technical scheme can completely meet grinding requirements of petroleum coke, and the index of grinded products is as follows: the fineness R90 is smaller than1.5% and the moisture Mpc is smaller than1%.
Description
Technical field
The utility model relates to middling speed Vertical Mill, relates in particular to a kind of middling speed Vertical Mill that is applied to grinding stone oil coke.
Background technology
Conventional type ZGM medium-speed pulverizer is generally used for and grinds erosive index HGI=40 ~ 100, total moisture Mt=8 ~ 40%, product fineness R
90=2 ~ 40% material, if grinding material is the petroleum coke with special character, because of its erosive index HGI=35 ~ 50, moisture Mt=10%, and its product grinding requirement need reach fineness R
90<1.5%, moisture Mpc<1%, conventional type ZGM medium-speed pulverizer cannot meet instructions for use, needs that accordingly conventional type ZGM medium-speed pulverizer is carried out to can meet it for the technological improvement of petroleum coke characteristic and grinds requirement.
The patent No. is that the Chinese invention patent of ZL201110118720.4 discloses a kind of wear-resisting split roller shell, this wear-resisting split roller shell is made up of wearing layer and basic unit, wearing layer is divided into 36 wear-resistant blocks, every wear-resistant block is cast as opening casing by metal wear resistant material, even embedded with metal pottery in casing, then, adopt the casting of liquid metals high-abrasive material, cermet is fixed in casing.Finally, wear-resistant block is fixed in basic unit with bolt.Wear-resisting split roller shell can be applicable to medium-speed coal mill roller, as medium-speed pulverizers such as RP, HP, MSP, ZGM.But this invention has just increased the wearing layer of roller shell, improve its anti-wear performance, do not improve and optimize grinding molded line, do not improve the milling area between roller shell and liner plate, therefore cannot realize the beneficial effect of effective transmission loading force and then raising grinding efficiency, not be suitable for the middling speed Vertical Mill of grinding stone oil coke.
The patent No. is that the Chinese utility model patent of ZL200920093363.9 discloses a kind of medium-speed pulverizer, belongs to mechanical field.The purpose of this utility model is the medium-speed pulverizer by liner plate and grinding roller being carried out to architecture advances.The utility model is made up of mill, mill spindle and shaft of grinding roller, be arranged on liner plate surface on mill have with mill spindle diameter at 45 °～skewed slot at 50 ° of angles; On grinding roller, there is the straight trough with shaft of grinding roller axially parallel.The utility model reasonable in design, adopts bionic principle, has cutting, chews, and comprising pressure rolling, milled, first chopping large piece is ground again, more can thoroughly material be ground, and relatively reduce wear.But this utility model is not improved equally and is optimized grinding molded line, does not increase the milling area between roller shell and liner plate, therefore also cannot realize the beneficial effect of effective transmission loading force and then raising grinding efficiency, be not suitable for the middling speed Vertical Mill of grinding stone oil coke.
The patent No. is that the Chinese utility model patent of ZL201220147817.8 discloses a kind of medium-speed pulverizer integrated rotating nozzle ring, comprises nozzle stationary ring, nozzle rotating ring, nozzle rotating ring and mill integrally casting.The utility model has the advantage of mill become with nozzle ring rotating ring as a whole after, the all radial compression that produced by grinding roller are delivered in the syndeton of mill and mill bearing, and this radial pressure can balance at circumference symmetry direction, the stability that can not connect mill impacts., be cast as after one, the extruding of hard particles can not separate rotating ring with mill meanwhile, has improved the stability of coal pulverizer operation; Mill edge after integrated does not have thread pore structure, has greatly improved the intensity of mill, thereby has improved the service life of mill.But the integrated rotating nozzle ring in this utility model exists and is not easy to manufacture, installs and the defect of maintenance, be not suitable for the middling speed Vertical Mill of grinding stone oil coke.
The patent No. is that the Chinese utility model patent of ZL200820124068.0 discloses a kind of dynamic rotary separator, it comprises shell separator, the parts such as driving wheel and driven pulley, bearing block and turntable bearing of the dynamic and static blading of rotary separator, variable-frequency motor, gear drive; Variable-frequency motor is connected with driving gear by shaft coupling, driving gear by being located thereon, under pair of bearings be arranged in the oil sump of separator external shell, together with driving gear 4 is meshed by the flank of tooth with driven gear 6, driven gear is arranged in hollow shaft by turntable bearing, and while rotation, drive hollow shaft to rotate, thereby drive the rotation of the moving vane 12 connecting together with rotor hollow shaft; Described rotor hollow shaft 9 is positioned at case lid 8 inside, and stator blade 13 is bolted in the upper plane of separator lower case 14, and moving vane 12 and stator blade 13 are at grade.The utility model can solve that the fineness of pulverized coal of medium-speed pulverizer is adjustable, efficiency is higher, adapt to the technical problems such as large capacity fired power generating unit efficient burning and low NOx drainage demand.But this utility model does not have the advantage of sound combination rotary separator, fails free vortex flow and forced vortex to organically combine, cannot realize classification flow field stable, balanced, be not suitable for the middling speed Vertical Mill of grinding stone oil coke.
Utility model content
In order to solve the technological deficiency that is not suitable for grinding stone oil coke that in above-mentioned prior art, medium-speed pulverizer exists, the technical solution adopted in the utility model is as follows:
A kind of middling speed Vertical Mill that is applied to grinding stone oil coke, comprise lapping device, described lapping device comprises grinding roller assembly and mill assembly, described grinding roller assembly comprises grinding roller and grinding roller roller shell, described mill assembly is provided with liner plate, wherein: the width of described grinding roller roller shell increases at least 10mm on the original basis, the thickness of described liner plate at least increases 20mm, and the cornerite of described grinding roller is at least reduced to 38.45 °.
Preferably, described grinding roller roller shell is built-up welding roller shell.
In above-mentioned arbitrary scheme, preferably, described liner plate is built-up welding liner plate.
In above-mentioned arbitrary scheme, preferably, also comprise loading system.
In above-mentioned arbitrary scheme, preferably, described loading system adopts hydraulic variable loading system.
In above-mentioned arbitrary scheme, preferably, described hydraulic variable loading system is provided with at least two cover proportional pressure control valve oil piping systems.
In above-mentioned arbitrary scheme, preferably, the pressure rating of described proportional pressure control valve oil piping system is at least 25MPa.
In above-mentioned arbitrary scheme, preferably, described hydraulic variable loading system comprises oil cylinder.
In above-mentioned arbitrary scheme, preferably, described oil cylinder increases bore size on the original basis.
In above-mentioned arbitrary scheme, preferably, described oil cylinder comprises rodless cavity.
In above-mentioned arbitrary scheme, preferably, described rodless cavity one end is provided with back pressure system.
In above-mentioned arbitrary scheme, preferably, described rodless cavity one end is also provided with accumulator.
In above-mentioned arbitrary scheme, preferably, described mill assembly comprises rotary spray nozzle ring.
In above-mentioned arbitrary scheme, preferably, described rotary spray nozzle ring comprises nozzle rotating ring and nozzle stationary ring.
In above-mentioned arbitrary scheme, preferably, described nozzle rotating ring adopts welding rotating ring.
In above-mentioned arbitrary scheme, preferably, comprise casing.
In above-mentioned arbitrary scheme, preferably, on described casing, be installed with nozzle stationary ring.
In above-mentioned arbitrary scheme, preferably, described nozzle stationary ring adopts welding stationary ring.
In above-mentioned arbitrary scheme, preferably, described mill assembly comprises bull ring pallet.
In above-mentioned arbitrary scheme, preferably, described nozzle rotating ring is connected by bolt with bull ring pallet.
In above-mentioned arbitrary scheme, preferably, described nozzle rotating ring is provided with nozzle rotating ring blade.
In above-mentioned arbitrary scheme, preferably, described nozzle rotating ring blade angle is 40 °.
In above-mentioned arbitrary scheme, preferably, described lapping device, at the position of easily washing away, is welded with wear strip.
In above-mentioned arbitrary scheme, preferably, the surrounding of described nozzle rotating ring is provided with collet.
In above-mentioned arbitrary scheme, preferably, comprise pressure aerofoil, according to different material, the difference of air quantity is required to adjust the specification of described pressure aerofoil in good time.
In above-mentioned arbitrary scheme, preferably, comprise rotary separator.
In above-mentioned arbitrary scheme, preferably, described rotary separator is sound combination rotary separator.
In above-mentioned arbitrary scheme, preferably, described rotary separator comprises rotor.
In above-mentioned arbitrary scheme, preferably, it is 0～150r/min that the range of speeds of described rotor is widened.
In above-mentioned arbitrary scheme, preferably, increase on the original basis the radius of turn of described rotor.
In above-mentioned arbitrary scheme, preferably, described rotary separator comprises stator blade and moving vane.
In above-mentioned arbitrary scheme, preferably, increase on the original basis described stator blade height.
In above-mentioned arbitrary scheme, preferably, increase on the original basis described moving vane height.
In above-mentioned arbitrary scheme, preferably, described rotary separator is provided with rotor clearance sealing branch road.
In above-mentioned arbitrary scheme, preferably, described rotor clearance sealing branch road comprises rotor clearance sealing air pipe.
In above-mentioned arbitrary scheme, preferably, described mill assembly top is provided with water injector.
In above-mentioned arbitrary scheme, preferably, described water injector is provided with annular conduit.
In above-mentioned arbitrary scheme, preferably, on described annular conduit, equal tee is housed.
In above-mentioned arbitrary scheme, preferably, two coaxial port of described equal tee are connected with annular conduit respectively.
In above-mentioned arbitrary scheme, preferably, a vertical port of described equal tee is equipped with straight sparge pipe.
In above-mentioned arbitrary scheme, preferably, described straight sparge pipe is provided with water spray outlet.
In above-mentioned arbitrary scheme, preferably, the opening direction of described water spray outlet down.
In above-mentioned arbitrary scheme, preferably, support angle steel is equipped with in described annular conduit below.
In above-mentioned arbitrary scheme, preferably, on described support angle steel, U bolt coupling assembling is housed, with stationary annular water pipe.
In above-mentioned arbitrary scheme, preferably, socket joint articulation is also housed on described annular conduit.
In above-mentioned arbitrary scheme, preferably, described annular conduit is provided with water inlet pipe.
In above-mentioned arbitrary scheme, preferably, on described annular conduit, bearing diagonal is housed.
In above-mentioned arbitrary scheme, preferably, described bearing diagonal comprises steel pipe A and steel pipe B.
The utility model beneficial effect is compared with prior art: on the basis of conventional type ZGM medium-speed pulverizer, optimize milled-in current, improve grinding efficiency, significantly improve the service life of the complete machine after improvement; Pass through hydraulic variable loading system, optimize hydraulic oil pipeline system and rotary separator, water injector is set, guaranteed the operation stability of the middling speed Vertical Mill that is applied to grinding stone oil coke, technique scheme can meet the grinding requirement of petroleum coke completely, and the product index after grinding can reach fineness R
90<1.5%, moisture Mpc<1%.
Brief description of the drawings
Fig. 1 is according to the contour structures schematic diagram of middling speed Vertical Mill one preferred embodiment that is applied to grinding stone oil coke of the present utility model;
Fig. 2 is the structural representation of conventional type rotary spray nozzle ring;
Fig. 3 is the structural representation of the rotary spray nozzle ring embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
The contour structures schematic diagram of Fig. 4 conventional type rotary separator;
Fig. 5 is the contour structures schematic diagram of the sound combination rotary separator embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Fig. 6 is the structural representation of the built-up welding roller shell embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Fig. 7 is the structural representation of the built-up welding liner plate embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Fig. 8 is that the C of built-up welding liner plate embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model is to view;
Fig. 9 is the A-A cutaway view of the built-up welding liner plate embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Figure 10 is the structural representation of the water injector embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Figure 11 is the local structure for amplifying schematic diagram of I1 of the water injector water inlet pipe embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Figure 12 is the D-D cross-sectional view of the water injector water inlet pipe embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Figure 13 is the B-B cross-sectional view of the water injector embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Figure 14 is the local structure for amplifying schematic diagram of I2 of the water injector U bolt coupling assembling embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Figure 15 is the back pressure system schematic diagram embodiment illustrated in fig. 1 of the middling speed Vertical Mill that is applied to grinding stone oil coke of the present utility model;
Description of reference numerals:
1 hydraulic variable loading system; 2 casings; 3 rotary separators; 4 grinding roller assemblies; 5 water injectors; 6 mill assemblies; 7 rotary spray nozzle rings; 8 conventional type rotary spray nozzle rings; 9 conventional type grinding rollers; 10 conventional type liner plates; 11 welding stationary rings; 12 welding rotating rings; 13 built-up welding roller shells; 14 built-up welding liner plates; 15 rotor clearance sealing air pipes; 16 surfacing parts; 17 annular conduits; 18 equal tees; 19 straight sparge pipes; 20 support angle steel; 21 water inlet pipes; 22 socket joint articulations; 23 steel pipe A; 24 steel pipe B; 25 water inlets; 26U shape bolt connection assembly; 27 loading motors; 28 load pump; 29 check valve A; 30 check valve B; 31 filter A; 32 filter B; 33 pressure transmitter A; 34 pressure transmitter B; 35 Pressure gauge A; 36 Pressure gauge B; 37 accumulator A; 38 proportional pressure control valve A; 39 reaction machines; 40 reaction pumps; 41 accumulator B; 42 proportional pressure control valve B; 43 load cylinder A; 44 load cylinder B; 45 load cylinder C; 46 coolers; 47 thermometers; 48 thermal resistances; 49 air filters; 50 heaters; 51 liquid level gauges; 52 fuel tanks; 53 terminal boxs; 54 stop valves.
Detailed description of the invention
In order to understand better the utility model, below in conjunction with specific embodiment, the utility model is explained in detail, but, obviously can carry out different modification and remodeling and not exceed the wider spirit and scope of the utility model that appended claim limits the utility model.Therefore, following examples are to have exemplary and hard-core implication.
As shown in Fig. 1-15, a kind of middling speed Vertical Mill that is applied to grinding stone oil coke, comprise lapping device, described lapping device comprises grinding roller assembly 4 and mill assembly 6, described grinding roller assembly 4 comprises grinding roller and grinding roller roller shell, described mill assembly 6 is provided with liner plate, wherein: the width of described grinding roller roller shell increases at least 10mm on the original basis, the thickness of described liner plate at least increases 20mm, the cornerite of described grinding roller is at least reduced to 38.45 °, described grinding roller roller shell is built-up welding roller shell 13, described liner plate is built-up welding liner plate 14, also comprise loading system, described loading system adopts hydraulic variable loading system 1, hydraulic variable loading system 1 is provided with at least two cover proportional pressure control valve oil piping systems, the pressure rating of described proportional pressure control valve oil piping system is at least 25MPa, hydraulic variable loading system 1 comprises oil cylinder, described oil cylinder increases bore size on the original basis, described oil cylinder comprises rodless cavity, described rodless cavity one end is provided with back pressure system and accumulator, mill assembly 6 comprises rotary spray nozzle ring 7, rotary spray nozzle ring 7 comprises nozzle rotating ring and nozzle stationary ring, described nozzle rotating ring adopts welding rotating ring 12, comprise casing 2, on casing 2, be installed with nozzle stationary ring, described nozzle stationary ring adopts welding stationary ring 11, mill assembly 6 comprises bull ring pallet, described nozzle rotating ring is connected by bolt with bull ring pallet, described nozzle rotating ring is provided with nozzle rotating ring blade, described nozzle rotating ring blade angle is 40 °, the position that described lapping device is easily washing away, be welded with wear strip, the surrounding of described nozzle rotating ring is provided with collet, comprise pressure aerofoil, according to different material, the difference of air quantity is required to adjust in good time the specification of described pressure aerofoil, comprise rotary separator 3, rotary separator 3 is sound combination rotary separator, described rotary separator comprises rotor, it is 0～150r/min that the range of speeds of described rotor is widened, increase on the original basis the radius of turn of described rotor, rotary separator 3 comprises stator blade and moving vane, increase on the original basis described stator blade and moving vane height, rotary separator 3 is provided with rotor clearance sealing branch road, described rotor clearance sealing branch road comprises rotor clearance sealing air pipe 15, mill assembly 6 tops are provided with water injector 5, water injector 5 is provided with annular conduit 17, equal tee 18 is housed on annular conduit 17, two coaxial port of equal tee 18 are connected with annular conduit 17 respectively, a vertical port of equal tee 18 is equipped with straight sparge pipe 19, straight sparge pipe 19 is provided with water spray outlet, the opening direction of described water spray outlet down, annular conduit 17 belows are equipped with and are supported angle steel 20, support on angle steel 20 U bolt coupling assembling 26 is housed, with stationary annular water pipe 17, socket joint articulation 22 is also housed on annular conduit 17, annular conduit 17 is provided with water inlet pipe 21, on annular conduit 17, bearing diagonal is housed, described bearing diagonal comprises steel pipe A23 and steel pipe B24.
The utility model, on the basis of existing lapping device, is optimized milled-in current, to improve the milling area between roller shell and liner plate, effectively transmits loading force, improves grinding efficiency, and the material of roller shell and liner plate is built-up welding form, improves the service life of parts.Loading system adopts hydraulic variable loading system, two cover proportional pressure control valve oil piping systems are set come size and the stability of controlled loading pressure, optimizes hydraulic oil pipeline system, to ensure grinding machine operation stability.Improve nozzle ring structural design: adopt welded type nozzle ring, be bolted integrally with bull ring pallet, follow mill rotation.Stationary ring is fixed on casing.Adjusting blade angle is 40 °, and dynamic and static ring is taked split type, convenient manufacture, installation, maintenance.Adjust the specification of pressing aerofoil, to adapt to the requirement of different material air quantity.At the position of easily washing away, welding wear strip, to ensure its service life, arranges the blade of some, and blade angle is 40 °, realizes distribution and the water conservancy diversion of a wind, and collet is set around nozzle ring, to ensure the milling time of material at mill.According to product systems and air quantity requirement, on original rotary separator basis, optimize rotary separator, improve separative efficiency, reduce circulating load in mill, widening rotor speed scope is 0 ~ 150r/min, increases rotor radius and blade height, rotor clearance sealing branch road is set, prevents coarse granule escape.Water injector is set above mill, increases material moisture, reduce material fluidity, the resistate bed of material, guarantees that grinding machine is stable.Technique scheme can meet the grinding requirement of petroleum coke, makes the product fineness R after grinding
90<1.5%, moisture Mpc<1%.
Claims (48)
1. one kind is applied to the middling speed Vertical Mill of grinding stone oil coke, comprise lapping device, described lapping device comprises grinding roller assembly (4) and mill assembly (6), described grinding roller assembly (4) comprises grinding roller and grinding roller roller shell, described mill assembly (6) is provided with liner plate, it is characterized in that: the width of described grinding roller roller shell increases at least 10mm on the original basis, the thickness of described liner plate at least increases 20mm, and the cornerite of described grinding roller is at least reduced to 38.45 °.
2. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 1, is characterized in that, described grinding roller roller shell is built-up welding roller shell (13).
3. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 2, is characterized in that, described liner plate is built-up welding liner plate (14).
4. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 3, is characterized in that, also comprises loading system.
5. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 4, is characterized in that, described loading system adopts hydraulic variable loading system (1).
6. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 5, is characterized in that, hydraulic variable loading system (1) is provided with at least two cover proportional pressure control valve oil piping systems.
7. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 6, is characterized in that, the pressure rating of described proportional pressure control valve oil piping system is at least 25MPa.
8. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 7, is characterized in that, hydraulic variable loading system (1) comprises oil cylinder.
9. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 8, is characterized in that, described oil cylinder increases bore size on the original basis.
10. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 9, is characterized in that, described oil cylinder comprises rodless cavity.
11. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 10, is characterized in that, described rodless cavity one end is provided with back pressure system.
The 12. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 11, is characterized in that, described rodless cavity one end is also provided with accumulator.
The 13. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 12, is characterized in that, mill assembly (6) comprises rotary spray nozzle ring (7).
The 14. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 13, is characterized in that, rotary spray nozzle ring (7) comprises nozzle rotating ring and nozzle stationary ring.
The 15. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 14, is characterized in that, described nozzle rotating ring adopts welding rotating ring (12).
16. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 15, is characterized in that, comprises casing (2).
The 17. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 16, is characterized in that, casing is installed with nozzle stationary ring on (2).
The 18. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 17, is characterized in that, described nozzle stationary ring adopts welding stationary ring (11).
The 19. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 18, is characterized in that, mill assembly (6) comprises bull ring pallet.
The 20. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 19, is characterized in that, described nozzle rotating ring is connected by bolt with bull ring pallet.
The 21. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 20, is characterized in that, described nozzle rotating ring is provided with nozzle rotating ring blade.
The 22. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 21, is characterized in that, described nozzle rotating ring blade angle is 40 °.
The 23. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 22, is characterized in that, described lapping device, at the position of easily washing away, is welded with wear strip.
The 24. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 23, is characterized in that, the surrounding of described nozzle rotating ring is provided with collet.
The 25. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 24, is characterized in that, comprise pressure aerofoil, according to different material, the difference of air quantity are required to adjust in good time the specification of described pressure aerofoil.
26. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 25, is characterized in that, comprises rotary separator (3).
The 27. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 26, is characterized in that, rotary separator (3) is sound combination rotary separator.
The 28. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 27, is characterized in that, described rotary separator comprises rotor.
The 29. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 28, is characterized in that, it is 0～150r/min that the range of speeds of described rotor is widened.
The 30. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 29, is characterized in that, increase on the original basis the radius of turn of described rotor.
The 31. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 30, is characterized in that, rotary separator (3) comprises stator blade and moving vane.
32. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 31, is characterized in that, increases on the original basis described stator blade height.
33. the middling speed Vertical Mill that is applied to grinding stone oil coke as claimed in claim 32, is characterized in that, increases on the original basis described moving vane height.
The 34. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 33, is characterized in that, rotary separator (3) is provided with rotor clearance sealing branch road.
The 35. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 34, is characterized in that, described rotor clearance sealing branch road comprises rotor clearance sealing air pipe (15).
The 36. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 35, is characterized in that, mill assembly (6) top is provided with water injector (5).
The 37. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 36, is characterized in that, water injector (5) is provided with annular conduit (17).
The 38. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 37, is characterized in that, equal tee (18) is housed on annular conduit (17).
The 39. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 38, is characterized in that, two coaxial port of equal tee (18) are connected with annular conduit (17) respectively.
The 40. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 39, is characterized in that, a vertical port of equal tee (18) is equipped with straight sparge pipe (19).
The 41. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 40, is characterized in that, straight sparge pipe (19) is provided with water spray outlet.
The 42. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 41, is characterized in that, the opening direction of described water spray outlet down.
The 43. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 42, is characterized in that, annular conduit (17) below is equipped with and is supported angle steel (20).
The 44. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 43, is characterized in that, support on angle steel (20) U bolt coupling assembling (26) is housed, with stationary annular water pipe (17).
The 45. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 44, is characterized in that, socket joint articulation (22) is also housed on annular conduit (17).
The 46. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 45, is characterized in that, annular conduit (17) is provided with water inlet pipe (21).
The 47. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 46, is characterized in that, annular conduit is equipped with bearing diagonal on (17).
The 48. middling speed Vertical Mills that are applied to grinding stone oil coke as claimed in claim 47, is characterized in that, described bearing diagonal comprises steel pipe A(23) and steel pipe B(24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071450.5U CN203725201U (en) | 2014-02-19 | 2014-02-19 | Medium-speed vertical mill applied to petroleum coke grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071450.5U CN203725201U (en) | 2014-02-19 | 2014-02-19 | Medium-speed vertical mill applied to petroleum coke grinding |
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| Publication Number | Publication Date |
|---|---|
| CN203725201U true CN203725201U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420071450.5U Expired - Lifetime CN203725201U (en) | 2014-02-19 | 2014-02-19 | Medium-speed vertical mill applied to petroleum coke grinding |
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| CN (1) | CN203725201U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801431A (en) * | 2014-02-19 | 2014-05-21 | 北京电力设备总厂 | Medium-speed vertical mill for milling petroleum coke |
| CN105396653A (en) * | 2015-11-23 | 2016-03-16 | 四川亿欣新材料有限公司 | Vertical mill for calcium carbonate grinding |
| CN106269195A (en) * | 2016-09-28 | 2017-01-04 | 张家口煜达电力科技有限公司 | Medium-speed pulverizer stagewise rotary wind ring |
| CN106475661A (en) * | 2016-11-08 | 2017-03-08 | 甘肃酒钢集团西部重工股份有限公司 | A kind of bead-welding technology of wear-resisting millstone sheet |
| CN106890705A (en) * | 2017-04-18 | 2017-06-27 | 长春发电设备总厂 | A kind of medium-speed pulverizer |
-
2014
- 2014-02-19 CN CN201420071450.5U patent/CN203725201U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801431A (en) * | 2014-02-19 | 2014-05-21 | 北京电力设备总厂 | Medium-speed vertical mill for milling petroleum coke |
| CN103801431B (en) * | 2014-02-19 | 2015-12-09 | 北京电力设备总厂有限公司 | A kind of middling speed Vertical Mill being applied to grinding stone oil coke |
| CN105396653A (en) * | 2015-11-23 | 2016-03-16 | 四川亿欣新材料有限公司 | Vertical mill for calcium carbonate grinding |
| CN105396653B (en) * | 2015-11-23 | 2018-07-10 | 四川亿欣新材料有限公司 | A kind of Vertical Mill for calcium carbonate grinding |
| CN106269195A (en) * | 2016-09-28 | 2017-01-04 | 张家口煜达电力科技有限公司 | Medium-speed pulverizer stagewise rotary wind ring |
| CN106475661A (en) * | 2016-11-08 | 2017-03-08 | 甘肃酒钢集团西部重工股份有限公司 | A kind of bead-welding technology of wear-resisting millstone sheet |
| CN106475661B (en) * | 2016-11-08 | 2019-02-19 | 甘肃酒钢集团西部重工股份有限公司 | A kind of bead-welding technology of wear-resisting millstone sheet |
| CN106890705A (en) * | 2017-04-18 | 2017-06-27 | 长春发电设备总厂 | A kind of medium-speed pulverizer |
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Owner name: BEIJING ELECTRIC POWER EQUIPMENT GENERAL FACTORY C Free format text: FORMER NAME: BEIJING POWER EQUIPMENT GENERAL PLANT |
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| CP01 | Change in the name or title of a patent holder |
Address after: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee after: BEIJING POWER EQUIPMENT GROUP Co.,Ltd. Address before: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee before: Beijing Power Equipment Group |
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Granted publication date: 20140723 |