CN118060011A - Grinding mechanism of vertical roller mill for coal - Google Patents
Grinding mechanism of vertical roller mill for coal Download PDFInfo
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- CN118060011A CN118060011A CN202410479843.8A CN202410479843A CN118060011A CN 118060011 A CN118060011 A CN 118060011A CN 202410479843 A CN202410479843 A CN 202410479843A CN 118060011 A CN118060011 A CN 118060011A
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- 238000000227 grinding Methods 0.000 title claims abstract description 73
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 239000003245 coal Substances 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 44
- 238000000429 assembly Methods 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- CBVWMGCJNPPAAR-HJWRWDBZSA-N (nz)-n-(5-methylheptan-3-ylidene)hydroxylamine Chemical compound CCC(C)C\C(CC)=N/O CBVWMGCJNPPAAR-HJWRWDBZSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- -1 that is Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention relates to the technical field of vertical roller grinders, in particular to a grinding mechanism of a coal vertical roller grinder, which comprises a base, wherein a transmission module is arranged at the middle position of the base, the top end of the transmission module is in transmission connection with a grinding disc, the top surface of the grinding disc is embedded and fixedly connected with a grinding ring, three adjusting components are arranged on the annular equal angle of the outer side wall of the base, and a supporting frame is arranged on the outer side of the top end of the transmission module. According to the invention, through the arrangement of the adjusting component, the rocker arm is driven to deflect through the connecting rod when the driving ring moves upwards, so that the rocker arm drives the supporting seat to deflect, and the pitch angle of the grinding roller components during operation is adjusted.
Description
Technical Field
The invention relates to the technical field of vertical roller grinders, in particular to a grinding mechanism of a coal vertical roller grinder.
Background
The vertical roller mill is mainly used for grinding cement raw materials, cement clinker, slag and coal cinder, and has the characteristics of simple structure and low manufacturing and using cost. The grinding disc device is rotatably supported on the machine body through the rotary guide rail, and is in transmission connection with the transmission device. Because the transmission device does not bear high axial loads such as the weight of the grinding disc and the grinding pressure, the transmission device can adopt a universal speed reducer, thereby having the advantages of compact structural configuration and reliable work, shortening the grinding stopping time and reducing the use and maintenance cost of equipment.
The existing vertical roller mill is characterized in that a plurality of grinding rollers are driven to be pressed down by independent hydraulic rods, and the pressure of the hydraulic rods is difficult to keep completely consistent, so that the difference occurs in the abrasion degree of the surfaces of the grinding rollers when the grinding rollers work for a long time, the material layers on the grinding disks are uneven, the wavy material layers are easy to occur, the grinding rollers shake when in operation, the difference in the abrasion degree is enlarged, the worse the surface flatness of the material layers is, the shaking and abnormal sound of the grinding rollers are aggravated, vicious circulation is formed, and long-term stable operation of the grinding rollers is not facilitated.
Disclosure of Invention
The invention aims to provide a grinding mechanism of a coal vertical roller mill, which solves the problems in the prior art, through the arrangement of an adjusting component, through the extension of a control hydraulic rod II, a driving ring is pushed by the three hydraulic rods II to slide upwards along a sliding rod, and a rocker arm is driven to deflect through a connecting rod when the driving ring moves upwards, so that the rocker arm drives a supporting seat to deflect, the pitch angle of the grinding roller component during operation is adjusted, and the downward pressure of the grinding roller component is additionally applied, and as the pitch angles of the three grinding roller components are simultaneously controlled through the driving ring, the pitch angles of the three grinding roller components during operation are in a consistent state, so that the difference of abrasion degrees caused by different pressures between the three grinding roller components is reduced, and shaking and abnormal sound caused by the difference of the abrasion degrees are reduced, thereby being beneficial to the stable operation of the grinding mechanism.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a vertical roller mill grinding mechanism of coal, includes the base, transmission module is installed to the intermediate position of base, transmission module's top transmission is connected with the mill, the top surface embedding of mill has linked firmly the carrier ring, the lateral wall annular equiangle of base is provided with three adjusting part, transmission module's top outside is provided with the support frame, three slide bar has been linked firmly between the bottom surface of support frame and the base, three sliding ring has been slidingly sleeved with between the slide bar, adjusting part includes connecting seat and hydraulic rod two, it is connected with hydraulic rod one and hydraulic rod two to rotate on the connecting seat, hydraulic rod two's bottom links firmly with the support frame top surface, hydraulic rod two's top lateral wall rotates and is connected with the rocking arm, hydraulic rod two's top rotates and is connected with the supporting seat, rotate between one end and the supporting seat of hydraulic rod one, rotate between the bottom of rocking arm and the bottom surface of driving ring and the driving ring and be connected the connecting rod, the top of supporting seat has linked firmly the roller subassembly, dismantle between supporting seat and the top of rocking arm.
The method is further characterized in that: the top ends of the outer side walls of the two sides of the rocker arm are movably inserted with pin rod assemblies, one ends of the two pin rod assemblies are connected in a screwing mode, and the top end of one side wall of the supporting seat is provided with an arc groove of the supporting seat which penetrates through the supporting seat.
The method is further characterized in that: the arc center of the arc groove coincides with the rotation axis of the bottom end of the supporting seat, and the rotation axis between the rocker arm and the second hydraulic rod is the same as the rotation axis of the bottom end of the supporting seat.
The method is further characterized in that: the grinding roller assembly comprises a central shaft, one end of the central shaft is fixedly sleeved with the top end of the supporting seat, the outer side wall of the other end of the central shaft is rotationally connected with a first bearing and a second bearing, the outer side walls of the first bearing and the second bearing are fixedly sleeved with rotating pieces, and the outer side walls of the rotating pieces are detachably sleeved with roller rings.
The method is further characterized in that: one end of the rotating piece is provided with a fixed ring piece, a plurality of threaded holes are formed in the outer side wall of the fixed ring piece and one side wall of the roll collar, and a plurality of fixing bolts are connected between the fixed ring piece and the roll collar in a screwing mode.
The method is further characterized in that: the outer side wall of the central shaft is fixedly connected with two first sealing rings at one side position of the first bearing, the two first sealing rings form a first sealing cavity, the outer side wall of the central shaft is fixedly connected with a second sealing ring at one side position of the second bearing, and a second sealing cavity is formed between the second sealing ring and the other end of the central shaft.
The method is further characterized in that: a plurality of first air inlets are formed in the outer side wall of one end of the central shaft, one end of the first air inlet is communicated with the sealing cavity, a plurality of second air inlets are formed in the inner side wall of the first sealing cavity, a plurality of third air inlets and air outlet channels are formed in the inner side wall of the second sealing cavity, the second air inlets correspond to the third air inlets one by one, fixing ring pieces are fixedly communicated with one ends of the second air inlets and the third air inlets, the fixing ring pieces are located between the first bearing and the second bearing, an air pump is fixedly mounted on the top end of the roll collar and used for supplying air to the first air inlets, and one ends of the air outlet channels are communicated with the outer side wall of one end of the central shaft.
The method is further characterized in that: one end of the central shaft is fixedly connected with a gas collecting ring, the gas collecting ring is communicated with the other ends of the first air inlet channels, and the gas collecting ring is communicated with the output end of the air pump.
The method is further characterized in that: the other side of the rotating piece is fixedly connected with a rear wing plate, and the middle position of the outer side wall of the central shaft is fixedly connected with a shielding frame.
The method is further characterized in that: the top surface of support frame has linked firmly and has kept off and enclose, keep off and enclose the outside that is located the mill:
compared with the prior art, the invention has the beneficial effects that:
1. Through adjusting part's setting, through control hydraulic stem two extension, three hydraulic stem two promote jointly and drive the ring and upwards slide along the slide bar, drive the swinging arms deflection through the connecting rod when moving up, thereby make the swinging arms drive the supporting seat deflection, adjust the pitch angle of grinding roller subassembly during operation, because the pitch angle of three grinding roller subassembly is simultaneously through driving the ring control, thereby make the pitch angle of three grinding roller subassembly in the consistent state of during operation, thereby reduce the difference of the degree of wear that causes because of the pressure difference between the three grinding roller subassembly, and when one roller ring wearing and tearing compare with other roller rings seriously, the clearance of one roller ring and thing material level increases, and the extra down pressure that receives reduces, the pressure between one roller ring and the material level drops, the down force that other roller rings received increases, until the degree of wear of three roller rings tends to be consistent, and then reduce shake and abnormal sound that cause because of the degree of wearing and tearing difference, be favorable to grinding mechanism's the smooth operation, when need examine and repair the grinding roller subassembly, with flexible and support seat release connection, control hydraulic stem one, thereby drive the supporting roller assembly, make the grinding roller to outwards turn over the roll assembly, the convenience of examining and repairing.
2. Through the setting of rocking arm, when needs are connected rocking arm and supporting seat, the slip pin pole subassembly inserts the arc inslot with the pin pole subassembly to rotatory pin pole subassembly makes and closes soon between two pin pole subassemblies and be connected, thereby realizes being connected of rocking arm and supporting seat, when the rocking arm deflects, drives the supporting seat through the extrusion of pin pole subassembly and deflects, and when a roller ring wearing and tearing are comparatively serious, the clearance is great back between roller ring and the grinding ring, makes things convenient for the grinding roller subassembly to deflect downwards under the action of gravity, thereby makes things convenient for bearing two and material layer face contact.
3. Through the setting of seal chamber I and seal chamber II, annotate lubricating oil in the space between seal chamber I and the seal chamber II, lubricating oil lubricates first and second of bearing promptly, the air pump is through carrying out the air feed in to a plurality of intake ducts through the gas collection ring during operation, the air current gets into first of seal chamber, make first of seal chamber be in atmospheric pressure and be higher than external atmospheric pressure, thereby avoid external air to get into first of seal chamber through the gap between sealing ring I and the rotating member, the air current in first of seal chamber loops through second of intake duct, solid fixed ring spare and intake duct three get into second of seal chamber, make second of seal chamber atmospheric pressure be greater than external atmospheric pressure equally, avoid the air infiltration that the external has the dust to get into second of seal chamber, simultaneously also can avoid lubricating oil infiltration to get into first of seal chamber and second of seal chamber, the air current takes away heat when passing through solid fixed ring spare, thereby cool down to lubricating oil through solid fixed ring spare, make things convenient for first of bearing and second operation, air current in the seal chamber discharges to the external air outlet channel, realize to the external air protection, realize cooling down to first of bearing and second of bearing, thereby make things convenient for the steady operation of rotating member and roller ring.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic overall elevational view of the present invention;
FIG. 3 is a schematic view of the bottom structure of a first puck of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic view of a rocker arm structure of the present invention;
FIG. 6 is a schematic view of the internal structure of the grinding roller assembly of the present invention;
FIG. 7 is a partial enlarged view at B of FIG. 6;
fig. 8 is a partial enlarged view at C of fig. 6.
In the figure: 100. a base; 110. a transmission module; 120. grinding disc; 121. a grinding ring; 130. a blocking wall; 140. a support frame; 150. a drive ring; 160. a slide bar; 200. an adjustment assembly; 210. a connecting seat; 220. a first hydraulic rod; 230. a second hydraulic rod; 240. a rocker arm; 241. a pin assembly; 250. a support base; 251. an arc groove; 260. a connecting rod; 300. a grinding roller assembly; 310. a central shaft; 311. a first sealing ring; 312. sealing the first cavity; 313. an air inlet channel I; 314. an air inlet channel II; 315. a second sealing ring; 316. an air inlet channel III; 317. sealing the second cavity; 318. an air outlet channel; 320. a first bearing; 330. a second bearing; 340. a rotating member; 341. a rear wing plate; 350. a roll collar; 360. a fixed ring member; 361. a fixing bolt; 370. a shielding frame; 380. an air pump; 390. and a gas collecting ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 4, in an embodiment of the invention, a grinding mechanism of a vertical roller mill for coal comprises a base 100, a transmission module 110 is installed in the middle of the base 100, a grinding disc 120 is connected to the top end of the transmission module 110 in a transmission manner, a grinding ring 121 is fixedly connected to the top surface of the grinding disc 120 in an embedded manner, three adjusting components 200 are arranged on the outer side wall of the base 100 in a ring shape at equal angles, a supporting frame 140 is arranged on the outer side of the top end of the transmission module 110, three sliding rods 160 are fixedly connected between the bottom surface of the supporting frame 140 and the base 100, a driving ring 150 is sleeved between the three sliding rods 160 in a sliding manner, the adjusting components 200 comprise a connecting seat 210 and a second hydraulic rod 230, a first hydraulic rod 220 and a second hydraulic rod 230 are rotatably connected to the connecting seat 210, a second hydraulic rod 230 is rotatably connected to the top surface of the supporting frame 140, a rocker arm 240 is rotatably connected to the outer side wall of the top end of the second hydraulic rod 230, a supporting seat 250 is rotatably connected to one end of the first hydraulic rod 220, one end of the second hydraulic rod 230 is rotatably connected to the bottom surface of the driving ring 150, a connecting rod 260 is rotatably connected to the top end of the driving ring 150, and the connecting rod 250 is rotatably connected to the top end of the connecting rod 250, and the rocker arm 300 is rotatably connected to the supporting seat 250.
Specifically, the rocker arm 240 is connected with the supporting seat 250, the second hydraulic rod 230 is controlled to extend, the third hydraulic rod 230 pushes the driving ring 150 to slide upwards along the sliding rod 160, the driving ring 150 drives the rocker arm 240 to deflect through the connecting rod 260 when moving upwards, so that the rocker arm 240 drives the supporting seat 250 to deflect, the pitch angle of the grinding roller assembly 300 during operation is adjusted, and the downward pressure of the grinding roller assembly 300 is additionally applied, and as the pitch angle of the three grinding roller assemblies 300 is simultaneously controlled through the driving ring 150, the pitch angle of the three grinding roller assemblies 300 during operation is in a consistent state, so that the difference of abrasion degree caused by different pressures between the three grinding roller assemblies 300 is reduced, the shake and abnormal sound caused by the difference of the abrasion degree are reduced, the smooth operation of the grinding mechanism is facilitated, when the grinding roller assemblies 300 are required to be overhauled, the rocker arm 240 is connected with the supporting seat 250 in a releasing mode, the first hydraulic rod 220 is controlled to stretch out, the supporting seat 250 is driven to be outwards turned outwards, the grinding roller assemblies 300 are outwards deflected, and the overhauling of the grinding roller assemblies 300 is facilitated.
Example 1
As shown in fig. 5, in the present embodiment, the top ends of the outer side walls of two sides of the rocker arm 240 are movably inserted with pin rod assemblies 241, one ends of the two pin rod assemblies 241 are rotatably connected, an arc groove 251 penetrating the support base 250 is provided at the top end of one side wall of the support base 250, the arc center of the arc groove 251 coincides with the rotation axis of the bottom end of the support base 250, and the rotation axis between the rocker arm 240 and the second hydraulic rod 230 is the same as the rotation axis of the bottom end of the support base 250.
In specific implementation, when the rocker arm 240 is required to be connected with the supporting seat 250, the pin rod assembly 241 is inserted into the arc groove 251 by the sliding pin rod assembly 241, and the pin rod assembly 241 is rotated, so that the two pin rod assemblies 241 are connected in a screwing way, and therefore, the rocker arm 240 is connected with the supporting seat 250, when the rocker arm 240 deflects, the supporting seat 250 is driven to deflect by extrusion of the pin rod assembly 241, when one roll collar 350 is severely worn, the gap between the roll collar 350 and the grinding ring 121 is large, the grinding roll assembly 300 is conveniently deflected downwards under the action of gravity, and the second bearing 330 is conveniently contacted with the material layer surface.
Example two
As shown in fig. 3 to 8, the grinding roller assembly 300 includes a central shaft 310, one end of the central shaft 310 is fixedly sleeved with the top end of the supporting seat 250, the outer side wall of the other end of the central shaft 310 is rotatably connected with a first bearing 320 and a second bearing 330, the outer side walls of the first bearing 320 and the second bearing 330 are fixedly sleeved with a rotating member 340, the outer side wall of the rotating member 340 is detachably sleeved with a roller ring 350, one end of the rotating member 340 is provided with a fixed ring member 360, the outer side walls of the fixed ring member 360 and one side wall of the roller ring 350 are respectively provided with a plurality of threaded holes, a plurality of fixed bolts 361 are screwed between the fixed ring member 360 and the roller ring 350, one side position of the outer side wall of the central shaft 310, which is positioned at the first bearing 320, is fixedly connected with two first sealing rings 311 to form a first sealing cavity 312, one side position of the outer side wall of the central shaft 310, which is positioned at one side position of the second bearing 330, is fixedly connected with the second sealing rings 315, a second sealing cavity 317 is formed between the second sealing ring 315 and the other end of the central shaft 310, a plurality of first air inlets 313 are formed on the outer side wall of one end of the central shaft 310, one end of the first air inlets 313 is communicated with the first sealing cavity 312, a plurality of second air inlets 314 are formed on the inner side wall of the first sealing cavity 312, a plurality of third air inlets 316 and air outlet channels 318 are formed on the inner side wall of the second sealing cavity 317, the plurality of second air inlets 314 are in one-to-one correspondence with the plurality of third air inlets 316, a fixed ring piece 360 is fixedly communicated between the second air inlets 314 and one end of the corresponding third air inlets 316, the fixed ring piece 360 is positioned between the first bearing 320 and the second bearing 330, an air pump 380 is fixedly arranged at the top end of the roll collar 350, the air pump 380 is used for supplying air to the plurality of first air inlets 313, one end of the air outlet channels 318 is communicated with the outer side wall of one end of the central shaft 310, one end of the central shaft 310 is fixedly connected with a gas collecting ring 390, the gas collecting ring 390 is communicated with the other end of the plurality of first air inlets 313, the gas collecting ring 390 is communicated with the output end of the gas pump 380.
In practical implementation, the space between the first sealing cavity 312 and the second sealing cavity 317 is filled with lubricating oil, that is, lubricating oil lubricates the first bearing 320 and the second bearing 330, during operation, the air pump 380 supplies air to the first plurality of air inlets 313 through the air collecting ring 390, air flow enters the first sealing cavity 312, so that the air pressure in the first sealing cavity 312 is higher than the external air pressure, thereby avoiding that the external air enters the first sealing cavity 312 through a gap between the first sealing ring 311 and the rotating member 340, the air flow in the first sealing cavity 312 sequentially enters the second sealing cavity 317 through the second air inlets 314, the fixed ring 360 and the third air inlets 316, the air pressure in the second sealing cavity 317 is higher than the external air pressure, the air permeation with dust is avoided from entering the second sealing cavity 317, meanwhile, the lubricating oil permeation is avoided from entering the first sealing cavity 312 and the second sealing cavity 317, the air flow takes away heat when passing through the fixed ring 360, thereby cooling the lubricating oil through the first bearing 320 and the second bearing 330, the air flow in the second sealing cavity 317 is conveniently discharged from the air outlet channel 318 to the outside, and the protection is realized, and meanwhile, the second bearing 320 and the second bearing 340 and the rotating member 340 are conveniently cooled by the roller ring 330 are conveniently and stably rotated.
Example III
As shown in fig. 4 and 5, in the present embodiment, the rear wing plate 341 is fixedly connected to the other side of the rotating member 340, the shielding frame 370 is fixedly connected to the middle position of the outer side wall of the central shaft 310, the shielding ring 130 is fixedly connected to the top surface of the supporting frame 140, and the shielding ring 130 is located outside the grinding disc 120.
In particular, by providing the shadow frames 370 and 130, the air flow over the abrasive disk 120 is reduced from overflowing.
In the present invention, the air pump 380 has a dust filtration module at the air inlet end to prevent dust from being transported into the first seal chamber 312 and the second seal chamber 317.
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 characteristics 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. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The utility model provides a vertical roller mill grinding mechanism of coal, includes base (100), drive module (110) are installed to the intermediate position of base (100), the top transmission of drive module (110) is connected with mill (120), the top surface embedding of mill (120) has linked firmly grinding ring (121), a serial communication port, the lateral wall annular equi-angle of base (100) is provided with three adjusting part (200), the top outside of drive module (110) is provided with support frame (140), three slide bar (160) have been linked firmly between the bottom surface of support frame (140) and base (100), three drive ring (150) have been cup jointed in the slip between slide bar (160), adjusting part (200) are including connecting seat (210) and hydraulic rod two (230), rotation is connected with hydraulic rod one (220) and hydraulic rod two (230) on connecting seat (210), the bottom of hydraulic rod two (230) and support frame (140) top surface constant-angle, hydraulic rod two (230) top lateral wall rotation is connected with support frame (240), hydraulic rod two (230) top end (250) are connected with hydraulic rod one end (250) between rotating seat (250) and rotating seat (150), the connecting rod (260) is rotationally connected between the bottom end of the rocker arm (240) and the top surface of the driving ring (150), the top end of the supporting seat (250) is fixedly connected with the grinding roller assembly (300), and the supporting seat (250) is detachably connected with the top end of the rocker arm (240).
2. The grinding mechanism of the vertical roller mill for coal according to claim 1, wherein pin rod assemblies (241) are movably inserted into top ends of outer side walls of two sides of the rocker arm (240), one ends of the two pin rod assemblies (241) are connected in a screwing mode, and an arc groove (251) of the penetrating supporting seat (250) is formed in the top end of one side wall of the supporting seat (250).
3. The grinding mechanism of the vertical roller mill for coal according to claim 2, wherein the arc center of the arc groove (251) coincides with the rotation axis of the bottom end of the supporting seat (250), and the rotation axis between the rocker arm (240) and the second hydraulic rod (230) is the same as the rotation axis of the bottom end of the supporting seat (250).
4. The grinding mechanism of a vertical roller mill for coal according to claim 1, wherein the grinding roller assembly (300) comprises a central shaft (310), one end of the central shaft (310) is fixedly sleeved with the top end of the supporting seat (250), the outer side wall of the other end of the central shaft (310) is rotatably connected with a first bearing (320) and a second bearing (330), the outer side walls of the first bearing (320) and the second bearing (330) are fixedly sleeved with a rotating member (340), and the outer side wall of the rotating member (340) is detachably sleeved with a roller ring (350).
5. The grinding mechanism of a vertical roller mill for coal according to claim 4, wherein one end of the rotating member (340) is provided with a fixed ring member (360), a plurality of threaded holes are formed in the outer side wall of the fixed ring member (360) and one side wall of the roller ring (350), and a plurality of fixing bolts (361) are screwed between the fixed ring member (360) and the roller ring (350).
6. The grinding mechanism of a vertical roller mill for coal according to claim 4, wherein the outer side wall of the central shaft (310) is fixedly connected with two first sealing rings (311) at a position on one side of the first bearing (320), the two first sealing rings (311) form a first sealing cavity (312), the outer side wall of the central shaft (310) is fixedly connected with a second sealing ring (315) at a position on one side of the second bearing (330), and a second sealing cavity (317) is formed between the second sealing ring (315) and the other end of the central shaft (310).
7. The grinding mechanism of a vertical roller mill for coal as claimed in claim 6, wherein a plurality of first air inlets (313) are formed on an outer side wall of one end of the central shaft (310), one end of the first air inlets (313) is communicated with the first sealing cavity (312), a plurality of second air inlets (314) are formed on an inner side wall of the first sealing cavity (312), a plurality of third air inlets (316) and air outlet channels (318) are formed on an inner side wall of the second sealing cavity (317), the plurality of second air inlets (314) are in one-to-one correspondence with the plurality of third air inlets (316), a fixing ring (360) is fixedly communicated between the second air inlets (314) and one ends of the corresponding third air inlets (316), the fixing ring (360) is located between the first bearing (320) and the second bearing (330), an air pump (380) is fixedly mounted on the top end of the roller ring (350), and one end of the air outlet channels (318) is communicated with an outer side wall of one end of the central shaft (310).
8. The grinding mechanism of a vertical roller mill for coal as claimed in claim 6, wherein one end of the central shaft (310) is fixedly connected with a gas collecting ring (390), the gas collecting ring (390) is communicated with the other ends of the first air inlet channels (313), and the gas collecting ring (390) is communicated with the output end of the air pump (380).
9. The grinding mechanism of a vertical roller mill for coal according to claim 4, wherein a rear wing plate (341) is fixedly connected to the other side of the rotating member (340), and a shielding frame (370) is fixedly connected to the middle position of the outer side wall of the central shaft (310).
10. The grinding mechanism of the vertical roller mill for coal according to claim 1, wherein a baffle (130) is fixedly connected to the top surface of the supporting frame (140), and the baffle (130) is located at the outer side of the grinding disc (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410479843.8A CN118060011B (en) | 2024-04-22 | Grinding mechanism of vertical roller mill for coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410479843.8A CN118060011B (en) | 2024-04-22 | Grinding mechanism of vertical roller mill for coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118060011A true CN118060011A (en) | 2024-05-24 |
| CN118060011B CN118060011B (en) | 2024-08-02 |
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| CN205517992U (en) * | 2016-01-23 | 2016-08-31 | 郑州大学 | Quick -witted grinding roller structure of vertical roller mill powder |
| CN114454531A (en) * | 2022-02-14 | 2022-05-10 | 北京智思迪科技有限公司 | Finger-shaped sheet mechanism with active expansion and contraction function for agricultural radial tire forming machine |
| CN114618648A (en) * | 2022-03-31 | 2022-06-14 | 中材（天津）粉体技术装备有限公司 | Vertical roller mill with grinding roller and grinding disc dual drives |
| CN115400844A (en) * | 2022-11-01 | 2022-11-29 | 合肥中亚建材装备有限责任公司 | Inside grading plant that divides of vertical roller mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1011252A1 (en) * | 1981-11-10 | 1983-04-15 | Всесоюзный Научно-Исследовательский Институт Цементного Машиностроения | Roll-and-plate type mill |
| CN202629080U (en) * | 2012-04-27 | 2012-12-26 | 宁波佳乐特橡塑机电有限公司 | Sealing device between grinding roller head and grinding roller shaft on coal mill |
| CN205517992U (en) * | 2016-01-23 | 2016-08-31 | 郑州大学 | Quick -witted grinding roller structure of vertical roller mill powder |
| CN114454531A (en) * | 2022-02-14 | 2022-05-10 | 北京智思迪科技有限公司 | Finger-shaped sheet mechanism with active expansion and contraction function for agricultural radial tire forming machine |
| CN114618648A (en) * | 2022-03-31 | 2022-06-14 | 中材（天津）粉体技术装备有限公司 | Vertical roller mill with grinding roller and grinding disc dual drives |
| CN115400844A (en) * | 2022-11-01 | 2022-11-29 | 合肥中亚建材装备有限责任公司 | Inside grading plant that divides of vertical roller mill |
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