CN210474161U

CN210474161U - Novel grinding roller sleeve device of vertical mill

Info

Publication number: CN210474161U
Application number: CN201921211306.6U
Authority: CN
Inventors: 王宏涛; 肖文玲; 王振中; 李冉; 林建昆
Original assignee: Tianjin Hongsheng Building Material Technology Co ltd
Current assignee: Tianjin Hongsheng Building Material Technology Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-08
Anticipated expiration: 2029-07-30

Abstract

The utility model belongs to a novel immediately, grind grinding roller cover device, include: grinding roller cover, be provided with connection structure and location limit structure in the grinding roller cover, fixed knot constructs the setting grinding roller cover surface, location limit structure sets up grinding roller cover internal surface, including fixed knot constructs and location limit structure setting, outer relative surface both ends, the utility model discloses it can be according to medium speed pulverizer grinding roller cover wearing and tearing situation, whole or partial maintenance change grinding roller cover, change or easy maintenance, only need whole or partial layer of milling of changing wear-resisting components of a whole that can function independently roller cover, basic unit can reuse, save material cost. Therefore, the medium-speed coal mill uses the wear-resistant split roller sleeve, is convenient and flexible to maintain, saves time and labor, saves material cost and has long service life.

Description

Novel grinding roller sleeve device of vertical mill

Technical Field

The utility model belongs to the technical field of immediately, especially, relate to a novel immediately, grind grinding roller cover device.

Background

The vertical mill is an ideal large-scale grinding device, is widely applied to industries such as cement, electric power, metallurgy, chemical industry, non-metal ore and the like, integrates crushing, drying, grinding and graded conveying, has high production efficiency, can grind blocky, granular and powdery raw materials into required powdery materials, and has the structure of 1, a grinding disc: comprises a guide ring, a wind ring, a material blocking ring, a lining plate, a disc body, a scraping plate, a lifting device and the like; 2. grinding roller: the roller sleeve is an easily-worn part and is required to have enough toughness and good wear resistance; 3. the powder concentrator can be divided into three types of static, dynamic and efficient combined powder concentrator: a. the static powder concentrator has the working principle similar to that of a cyclone cylinder, has a simple structure, does not have movable parts and is not easy to break down. But the adjustment is not flexible, and the separation efficiency is not high; b. the dynamic powder concentrator is a cage which rotates at a high speed, when dusty gas passes through the cage, fine particles are brought in by air friction, coarse particles are directly blocked by the collision of blades, the speed of a rotor can be adjusted according to requirements, and when the rotating speed is high, the discharging fineness is finer, which is the same as the classification principle of a centrifugal powder concentrator. It has higher grading precision and convenient fineness control; c. the high-efficiency combined powder concentrator combines a dynamic powder concentrator (a rotary cage) and a static powder concentrator (guide vanes), namely, the cylindrical cage is used as a rotor, the guide vanes are uniformly distributed around the cylindrical cage, so that air flow uniformly enters a powder concentrator area from top to bottom, the separation of coarse powder and fine powder is clear, and the powder concentration efficiency is high. However, the powder concentrator has larger resistance, so that the abrasion of the blades is also large; 4. a pressurizing device: a hydraulic device, an accumulator; 5. a monitoring device: monitoring rocker arm and vibration; 6. the transmission device comprises: a motor, a reducer; 7. a water spraying system: reducing the temperature and stabilizing the material layer; 8. a coarse powder external circulation system: a hoist; the working principle is that a motor drives a grinding disc to rotate through a speed reducer, materials fall to the center of the grinding disc from a feed opening, move to the edge of the grinding disc under the action of centrifugal force and are rolled by a grinding roller, the crushed materials overflow from the edge of the grinding disc and are simultaneously brought into a high-efficiency powder selecting machine integrated with a vertical mill by high-speed upward hot airflow from a nozzle ring (an air ring), and coarse powder is separated by a separator, returns to the grinding disc and is ground again; and fine powder flows out of the mill along with the air and is collected in a dust collection device of the system, namely a product, wherein coarse-particle materials which are not carried by the hot air flow and metal pieces which accidentally enter sink from the air ring, are scraped out by a scraper plate and then are fed into the mill for grinding again through an externally circulating bucket elevator.

The grinding roller sleeve integrates crushing, drying, grinding and graded conveying, has high production efficiency, can grind blocky, granular and powdery raw materials into required powdery materials, but has serious abrasion of the grinding roller and shortened service life of the grinding roller sleeve, is used for about 6000 hours at present, needs to integrally pull down the grinding roller to a special maintenance point for surfacing repair, has long maintenance time and high cost, can prolong the service life of the grinding roller sleeve integrally cast by adopting metal ceramics to more than 20000 hours, and relieves the contradiction of coal quality variation and boiler coal demand increase to a certain extent. However, the roller sleeve of the metal ceramic grinding roller cannot be repaired, is scrapped after the service life is over and cannot be reused, and the integrally cast new roller sleeve of the metal ceramic grinding roller has high cost and limits the popularization and application of the integrally cast metal ceramic grinding roller, so the improvement is provided in the technical scheme.

SUMMERY OF THE UTILITY MODEL

The utility model is directed to the aforesaid because cermet grinding roller shell can't restore, life must scrap after the end, can not used repeatedly, and whole cast new grinding roller shell is very high with costs, has restricted the problem of the popularization and application of the whole casting grinding roller of cermet, sets up connection structure and location limit structure on the grinding roller shell, makes the part of milling dismantle the change, to partial wear, convenient maintenance, the reduction loss, simple structure, convenient operation.

In order to achieve the above-mentioned purpose, the utility model discloses a technical scheme do, the utility model provides a novel immediately, grind grinding roller cover device, include: the grinding roller sleeve is internally provided with a connecting structure and a positioning limiting structure, the fixing structure is arranged on the outer surface of the grinding roller sleeve, the positioning limiting structure is arranged on the inner surface of the grinding roller sleeve, and the fixing structure and the positioning limiting structure are arranged at two ends of the inner and outer opposite surfaces;

the fixing structure includes: the grinding part is arranged on the surface of the grinding roller sleeve, and the fastening parts are respectively arranged on two opposite surfaces of the grinding part and the surface of the grinding roller sleeve;

the limit structure comprises: the grinding roller sleeve comprises a positioning limiting part and a fixing part, wherein the positioning limiting part is arranged on the inner surface of the grinding roller sleeve, part of the positioning limiting part is communicated with the fastening part, and the fixing part is arranged in the positioning limiting part.

Preferably, the grinding section comprises: the grinding roll sleeve comprises an opening groove and a grinding plate, wherein the opening groove is formed in the surface of the grinding roll sleeve, and the grinding plate is movably embedded in the opening groove.

Preferably, the fastening portion includes: the grinding plate comprises a first thread groove, a connecting hole and a screw rod, wherein the first thread groove is formed in the inner surface of the grinding plate, the connecting hole is formed in the surface of the notch, the screw rod is movably sleeved in the connecting hole, and one end of the screw rod is screwed and connected in the first thread groove.

Preferably, the positioning limiting part includes: the grinding roller sleeve comprises a fixing groove, a limiting groove, a clamping block and a limiting block, wherein the fixing groove is formed in the inner surface of the grinding roller sleeve, the limiting groove is formed in the inner surface of the grinding roller sleeve and is respectively communicated with the fixing groove and the connecting hole, the clamping block is movably arranged in the fixing groove, and the limiting block is movably embedded in the limiting groove and is connected with the clamping block on the surface.

Preferably, the fixing portion includes: through-hole, oil filler point, second thread groove, bolt and fixture block, the through-hole is opened the fixture block lower surface, the oil filler point is opened the fixture block lower surface and with the through-hole is linked together, the bolt passes the through-hole is twisted soon and is connected in the second thread groove, the fixture block is twisted soon and is connected the through-hole internal surface.

Preferably, the cross sections of the grinding plate and the notch are both arc-shaped structures and are matched in shape and size, and the grinding plate is composed of two or four arc-shaped plates with the same shape and size.

Preferably, the through hole is a stepped hole, the external thread is located at the position with the largest inner diameter of the through hole, and the fixture block is in threaded connection with the through hole through matching with the external thread.

Preferably, the thread direction of the second thread groove is opposite to that of the external thread, and the second thread groove and the external thread are respectively left-handed and right-handed.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect, and it can be according to medium speed pulverizer grinding roller shell wearing and tearing situation, and whole or partial maintenance change grinding roller shell, change or easy maintenance only need whole or partial change wear-resisting components of a whole that can function independently roller shell's the layer of milling, and basic unit can reuse, save material cost. Therefore, the medium-speed coal mill uses the wear-resistant split roller sleeve, is convenient and flexible to maintain, saves time and labor, saves material cost and has long service life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a novel grinding roller sleeve device of a vertical mill provided in this embodiment;

fig. 2 is a partial enlarged view of a grinding roller sleeve device of the novel vertical mill provided by the embodiment;

fig. 3 is a partial enlarged view of a grinding roller sleeve device of the novel vertical mill provided by the embodiment;

fig. 4 is a partial enlarged view of a grinding roller sleeve device of the novel vertical mill provided by the embodiment;

in the above figures, 1, a grinding roller sleeve; 2. a groove is opened; 3. grinding the plate; 4. a first thread groove; 5. connecting holes; 6. a screw; 7. fixing grooves; 8. a limiting groove; 9. a clamping block; 10. a limiting block; 11. a through hole; 12. an oil filler hole; 13. a second thread groove; 14. a bolt; 15. and (4) external threads.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

The embodiment can be seen from the attached figures 1-4 of the specification, and the scheme comprises the following steps: grinding roller cover 1, be provided with connection structure and location limit structure in the grinding roller cover 1, fixed knot constructs the setting and is in 1 surface of grinding roller cover, location limit structure sets up 1 internal surface of grinding roller cover, including fixed knot constructs outside relative surface both ends with location limit structure setting, above-mentioned fixed knot constructs and includes: mill portion and fastening portion, it sets up to mill the portion 1 surface of grinding roller shell, fastening portion sets up respectively grind the portion with 1 surperficial two relative surfaces of grinding roller shell, above-mentioned limit structure includes: spacing portion in location and fixed part, the spacing portion in location is opened and is linked together at 1 internal surface of grinding roller cover and part and fastening portion, the fixed part sets up in the spacing portion in location, when using, connection structure is located grinding roller cover 1's surface for fixed and dismantle the wearing and tearing that the surface caused of milling maintain, convenient the dismantlement can reduce the loss, and location limit structure plays the positioning action when 1 installation of grinding roller cover, easy to assemble to carry out one-step fixed connection structure, avoid appearing becoming flexible, cause the surface to rock and cause wearing and tearing.

As can be seen from the accompanying fig. 1-4 of the specification, the above-mentioned grinding section comprises: opening slot 2 and grinding plate 3, opening slot 2 is in 1 surface of grinding roller cover, grinding plate 3 activity inlays and is adorned in opening slot 2, the aforesaid fastening portion includes: first thread groove 4, connecting hole 5 and screw rod 6, first thread groove 4 is opened grind 3 internal surfaces of board, connecting hole 5 is opened open 2 surfaces in the groove, 6 movable suit of screw rod are in connect is twisted soon in connecting hole 5 and one end and is connected in first thread groove 4, when using, grind board 3 and put in opening groove 2, then first screw rod 6 and the 6 cooperations of screw rod of fastening part are fixed, and 6 cartridges of screw rod are in connecting hole 5, take the screwed one end to twist soon in first thread groove 4, convenient fixed dismantlement.

As can be seen from fig. 1 to 4 of the specification, the positioning limiting part includes: fixed slot 7, spacing groove 8, fixture block 9 and stopper 10, fixed slot 7 is opened 1 internal surface of grinding roller shell, spacing groove 8 is opened 1 internal surface of grinding roller shell and respectively with fixed slot 7 and connecting hole 5 are linked together, fixture block 9 activity sets up in fixed slot 7, stopper 10 activity inlays the dress and is in spacing groove 8 and the surface with fixture block 9 is connected, the aforesaid the fixed part includes: the grinding roller sleeve comprises a through hole 11, an oil injection hole 12, a second threaded groove 13, a bolt 14 and a fixture block 9, wherein the through hole 11 is formed in the lower surface of the fixture block 9, the oil injection hole 12 is formed in the lower surface of the fixture block 9 and communicated with the through hole 11, the bolt 14 penetrates through the through hole 11 and is screwed in the second threaded groove 13, the fixture block 9 is screwed in the inner surface of the through hole 11, when the grinding roller sleeve is used, the fixing groove 7 is formed in the surface of the inner portion of the grinding roller sleeve 1, the fixture block 9 is embedded in the fixing groove 7 to avoid rotation, then the fixing portion is used for reinforcing, the limiting groove 8 is also formed in the inner surface of the grinding roller sleeve 1 and is communicated with the fixing groove 7 and the connecting hole 5, the limiting block 10 is connected to the fixture block 9 and plays a role of supporting the screw 6 to prevent the screw 6 from loosening to cause the grinding plate 3, the through hole 11 in the surface, then the clamping block 9 is screwed in the through hole 11 for secondary fixing, and the oil in the oil injection hole 12 flows into the second thread groove 13 through oil injection to avoid rusting inside.

As can be known from the attached drawings 1 to 4 of the specification, the cross sections of the grinding plate 3 and the notch 2 are both arc-shaped structures and are matched in shape and size, the grinding plate 3 is composed of two or four arc-shaped plates with the same shape and size, the through hole 11 is a stepped hole, the external thread 15 is located at the position with the maximum inner diameter of the through hole 11, the fixture block 9 and the through hole 11 are connected by matching and screwing with the external thread 15, the second thread groove 13 is opposite to the external thread 15 in thread direction and is respectively left-handed and right-handed, when in use, the number of the fixture blocks 9 is the same as the number of the grinding plates 3, the grinding plates 3 can be composed of two blocks or four blocks, the grinding plates are installed according to the positioning number of the fixture blocks 9, the fixture block 9 reinforces the bolt 14 through the reverse thread direction, the grinding plates 3 grind and vibrate for a long time, which easily causes the bolt 14 and the screw, can be avoided.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiments into equivalent variations to apply to other fields, but any simple modification, equivalent variations and modifications made to the above embodiments according to the technical matters of the present invention do not depart from the technical contents of the present invention, and still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a novel immediately, grind roller cover device, includes: the grinding roller sleeve (1) is characterized in that a fixing structure and a positioning and limiting structure are arranged in the grinding roller sleeve (1), the fixing structure is arranged on the outer surface of the grinding roller sleeve (1), the positioning and limiting structure is arranged on the inner surface of the grinding roller sleeve (1), and the fixing structure and the positioning and limiting structure are arranged at two ends of the inner and outer opposite surfaces;

the fixing structure includes: the grinding part is arranged on the surface of the grinding roller sleeve (1), and the fastening part is arranged on two surfaces of the grinding part, which are opposite to the surface of the grinding roller sleeve (1);

the limit structure comprises: the grinding roller sleeve comprises a positioning limiting part and a fixing part, wherein the positioning limiting part is arranged on the inner surface of the grinding roller sleeve (1), part of the positioning limiting part is communicated with the fastening part, and the fixing part is arranged in the positioning limiting part.

2. The novel grinding roller sleeve device of the vertical grinding mill as claimed in claim 1, wherein the grinding part comprises: the grinding roll is characterized by comprising an opening groove (2) and a grinding plate (3), wherein the opening groove (2) is formed in the surface of the grinding roll sleeve (1), and the grinding plate (3) is movably embedded in the opening groove (2).

3. The novel grinding roller sleeve device of the vertical grinding roller mill as claimed in claim 2, wherein the fastening portion comprises: first thread groove (4), connecting hole (5) and screw rod (6), first thread groove (4) are opened grind board (3) internal surface, connecting hole (5) are opened breach groove (2) surface, screw rod (6) activity suit is in connect hole (5) and one end are twisted soon and are connected in first thread groove (4).

4. The novel grinding roller sleeve device of the vertical grinding roller mill as claimed in claim 3, wherein the positioning limiting part comprises: the grinding roller sleeve structure comprises a fixing groove (7), a limiting groove (8), a clamping block (9) and a limiting block (10), wherein the fixing groove (7) is formed in the inner surface of a grinding roller sleeve (1), the limiting groove (8) is formed in the inner surface of the grinding roller sleeve (1) and communicated with the fixing groove (7) and a connecting hole (5) respectively, the clamping block (9) is movably arranged in the fixing groove (7), and the limiting block (10) is movably embedded in the limiting groove (8) and connected with the clamping block (9) in surface.

5. The novel grinding roller sleeve device of the vertical grinding roller mill as claimed in claim 4, wherein the fixing part comprises: through-hole (11), oil filler point (12), second thread groove (13), bolt (14) and fixture block (9), open through-hole (11) fixture block (9) lower surface, oil filler point (12) are opened fixture block (9) lower surface and with through-hole (11) are linked together, bolt (14) pass through-hole (11) are twisted soon and are connected in second thread groove (13), fixture block (9) are twisted soon and are connected through-hole (11) internal surface.

6. A novel vertical mill grinding roller sleeve device according to claim 2, characterized in that the cross sections of the grinding plate (3) and the notch (2) are arc-shaped structures and are matched in shape and size, and the grinding plate (3) is composed of two or four arc-shaped plates with the same shape and size.

7. A novel grinding roller sleeve device of a vertical grinding roller, as claimed in claim 5, wherein the through hole (11) is a stepped hole, the maximum inner diameter of the through hole (11) is provided with an external thread (15), and the clamping block (9) is screwed with the through hole (11) through a thread matched with the external thread (15).

8. A novel grinding roller sleeve device of a vertical grinding roller according to claim 7, characterized in that the thread directions of the second thread groove (13) and the external thread (15) are opposite, namely left-handed and right-handed.