CN207680707U - A kind of cement finish grinding vertical grinding roller - Google Patents

Abstract

The utility model discloses a kind of cement finish grinding vertical grinding rollers, spacer ring is equipped in the middle part of the grinding area of the mill, the grinding of the mill is distinguished into the compression grinding area on the inside of mill and the friction grinding area on the outside of mill by the spacer ring, all compressed powder grinding rollers are arranged in the compression grinding area, and all Frication powder grinding rollers are arranged in the friction grinding area；There is inner roller slot, the friction grinding area there is outer side roller slot, the groove width of the inner roller slot to be more than the groove width of the outer side roller slot in the compression grinding area.The utility model cement finish grinding squeezes grinding process with vertical grinding roller using interior outside secondary grinding roller, and the characteristics of according to secondary extrusion material, the shape of the roller slot and rod face that match is optimized, the quality requirements of cement can be improved and cement grinding power consumption is greatly lowered.

Description

A kind of cement finish grinding vertical grinding roller

Technical field

The utility model is related in grinding technology field, more particularly to a kind of cement finish grinding vertical grinding roller.

Background technology

Vertical roller grinder abbreviation Vertical Mill, grinding principle are bed of material grindings, i.e., by between particle and particle mutually squeeze come Realize the grinding of material, grinding process controllability is good, and mill efficiency is high.

The grinding structure that vertical roller grinder uses at present for：New feeding and powder concentrator feed back are mixed by feed bin under the effect of gravity In the middle part of feeding mill, mill rotation drives material rotation, material to be transported under the influence of centrifugal force from mill middle part to mill edge It is dynamic, when below material movement to grinding roller, under the collective effect of collet and grinding roller pressure, the grinding roller pressing materials (bed of material ), for material by grinding, the material after grinding crosses collet under the influence of centrifugal force, leaves mill, falls under gravity into Vane, is then brought into the powder concentrator on grinding machine top by high-speed flow upward in vane, and qualified finished product is walked by powder concentrator choosing, do not conformed to Feedback outlet of the bulky grain of lattice through powder concentrator enters feed bin, returned after being mixed with new feeding mill continue grinding, until grinding at The finished product that release mesh requires.

One is cylinders for existing vertical grinding roller, and one is cones.Both grinding rollers are past when coordinating with horizontal grinding disc Toward relatively high collet is needed, to extend grinding time of the material on mill, to have the function that Stabilizing Materials bed. Due to the presence of very high collet, grinding roller eroded area is caused to compare concentration, affects the grinding roller service life.

Vertical Mill is in grinding process, and material is under the influence of centrifugal force from mill center to mill border movement, material ruler On very little from large to small, the thickness of the bed of material is by thick thinning, by loosely becoming closely knit.And the chamber that above two conventional roll set is formed with mill Body is essentially rectangular, thus the thickness of feed layer formed is almost the same, and this results in the thickness of bed of material ravelled spot and closely knit place one It causes.Since the size of ravelled spot material is bigger than normal, thus grinding machine vibration can be influenced, on the other hand, due to being cut between grinding roller and mill Face is the bed of material space of rectangle, and the region that grinding roller is extruded on material bed is wider, and the pressure at the closely knit place of material bed is shared by ravelled spot , thus the actual pressure for acting on the closely knit place of material bed is smaller, is unfavorable for generating fine powder, produces high thin material finished product and compares It is difficult.

Utility model content

In view of the above technical problems, the utility model proposes a kind of cement finish grinding vertical grinding rollers, in existing vertical rolls On the basis of grinding basic structure, grinding process is squeezed using interior outside secondary grinding roller, and the characteristics of according to secondary extrusion material, it is right The shape of the roller slot and rod face that match optimizes, and the quality requirements of cement can be improved and cement grinding is greatly lowered Power consumption.

In order to achieve the above technical purposes, the utility model adopts the following technical solution：

The grinding area middle part of a kind of cement finish grinding vertical grinding roller, the mill is equipped with spacer ring, and the spacer ring will be described The grinding of mill is distinguished into the compression grinding area on the inside of mill and the friction grinding area on the outside of mill, all compressed powders Grinding roller is arranged in the compression grinding area, and all Frication powder grinding rollers are arranged in the friction grinding area；The compression There is inner roller slot, the friction grinding area there is outer side roller slot, the groove width of the inner roller slot to be more than the outside in grinding area The groove width of roller slot.

The inner roller slot and outer side roller slot are arc-shaped roller slot, wherein the numerical value of the groove width R1 of the inner roller slot It is 1.4-1.6 times of the numerical value of the groove width R2 of outer side roller slot.

The grinding roller diameter of the compressed powder grinding roller is more than the grinding roller diameter of Frication powder grinding roller.

The roll surface of the compressed powder grinding roller and the roll surface of Frication powder grinding roller are spherical roll surface.

Advantageous effect：

The utility model is located at the wide R1 of roller of the roller slot of inside more than the roller slot positioned at outside using asymmetric spherical grinding roller The wide R2 of roller, the roller dish gap of inside is larger, advantageously forms material wedge, is compression grinding area herein, and speed difference is smaller；Outside Roller slot gap is smaller, and is permanent gap, is designed to larger speed difference, forms friction grinding area, is conducive to fine grain production It is raw.

Due to the material of outside grinding roller grinding have been subjected to inside grinding roller first crushing, into outside material particular diameter compared with Small, grinding roller diameter is small compared with inside grinding roller diameter, since the linear velocity of outside slot grinding is more than inside slot grinding, the outer side grinding of minor diameter Roller is more convenient for improving grinding roller to the roll-in number of material, and reinforced cementitious granule-morphology can more meet finished cement to granule-morphology And the technology requirement of grain composition, therefore cement finish grinding vertical roller grinder can be improved the quality requirements of cement and be greatly lowered Cement grinding power consumption.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model cement finish grinding vertical grinding roller；

Fig. 2 is the floor map of mill；

Wherein, 1 is feed inlet；2 be compressed powder grinding roller；3 be mill；4 be material bearing disc；5 be discharge port；6 be Frication powder Grinding roller；7 be blocking material ring；8 be lining board for grinding discs；9 be material scraping plate；10 be speed reducer.

Specific implementation mode

For that can further appreciate that the innovation and creation contents, features and effects of the invention, the following examples are hereby given, in detail Carefully it is described as follows：

As shown in Fig. 1, the grinding area middle part of a kind of cement finish grinding vertical grinding roller, the mill is equipped with spacer ring, institute It states spacer ring and the grinding of the mill is distinguished into the compression grinding area on the inside of mill and the friction grinding on the outside of mill Area, all compressed powder grinding rollers are arranged in the compression grinding area, and all Frication powder grinding rollers are arranged at the friction grinding In area；There is inner roller slot, the friction grinding area to have outer side roller slot, the groove width of the inner roller slot in the compression grinding area More than the groove width of the outer side roller slot.

As the further preferred of the utility model cement finish grinding vertical grinding roller technical solution, the inner roller slot and Outer side roller slot is arc-shaped roller slot, wherein the numerical value of the groove width R1 of the inner roller slot is the number of the groove width R2 of outer side roller slot The 1.4-1.6 of value.

Further preferred, the compressed powder grinding roller as the utility model cement finish grinding vertical grinding roller technical solution Grinding roller diameter be more than Frication powder grinding roller grinding roller diameter.

Further preferred, the compressed powder grinding roller as the utility model cement finish grinding vertical grinding roller technical solution Roll surface and the roll surface of Frication powder grinding roller be spherical roll surface.

Although the preferred embodiment of the invention is described above, the invention is not limited to The specific implementation mode stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common Technical staff is not departing from the invention objective and scope of the claimed protection situation under the enlightenment of the invention Under, many forms can also be made, these are belonged within the protection domain of the invention.

Claims (1)

1. a kind of cement finish grinding vertical grinding roller, which is characterized in that be equipped with spacer ring in the middle part of the grinding area of mill, the spacer ring will The grinding of the mill is distinguished into the compression grinding area on the inside of mill and the friction grinding area on the outside of mill, all pressures Contracting grinding roller is arranged in the compression grinding area, and all Frication powder grinding rollers are arranged in the friction grinding area；It is described Compressing grinding area, there is inner roller slot, the friction grinding area to have outer side roller slot, and the groove width of the inner roller slot is more than described The groove width of outer side roller slot；

The roll surface of the compressed powder grinding roller and the roll surface of Frication powder grinding roller are spherical roll surface.