CN216987911U

CN216987911U - Raymond mill roller structure

Info

Publication number: CN216987911U
Application number: CN202220454571.2U
Authority: CN
Inventors: 胡长贵
Original assignee: Chengdu Funaite Mining Equipment Co ltd
Current assignee: Chengdu Funaite Mining Equipment Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-19
Anticipated expiration: 2032-03-04

Abstract

The utility model relates to a Raymond grinding roller structure which comprises a grinding roller assembly, a shaft cylinder and a grinding roller shaft, wherein the grinding roller shaft is movably arranged in the shaft cylinder through a bearing, a clamping part is arranged at the lower end of the grinding roller shaft, the grinding roller assembly comprises an outer sleeve, an inner sleeve, an upper end cover and a lower end cover, the inner sleeve is arranged in the outer sleeve, a groove is formed in the inner wall of the outer sleeve, a convex strip is arranged on the outer wall of the inner sleeve and clamped in the groove, the upper end cover and the lower end cover are respectively arranged at the upper end and the lower end of the outer sleeve, the clamping part penetrates through the upper end cover and is clamped with the inner wall of the inner sleeve, and the tail end of the clamping part is connected with the lower end cover through a bolt. The outer sleeve made of high-chromium cast iron is arranged outside the inner sleeve, so that the grinding roller assembly has high wear resistance and toughness, good high-temperature resistance and corrosion resistance, the overall hardness and wear resistance of the grinding roller assembly are improved, the outer sleeve is directly replaced when the grinding roller assembly is seriously worn, and the use cost is reduced.

Description

Raymond mill roller structure

Technical Field

The utility model relates to the technical field of Raymond mill powder machines, in particular to a Raymond mill roller structure.

Background

The Raymond mill is also called Raymond mill, is widely applied to grinding processing of mineral products in the fields of metallurgy, building materials, chemical industry, mines and the like, and is suitable for processing various non-inflammable and explosive minerals with the Mohs hardness of below seven levels and the humidity of below 6 percent. The grinding process comprises the following steps of firstly, grinding a blocky raw material to a required feeding granularity by a Raymond mill, conveying the material to a storage bin by a bucket elevator, then uniformly conveying the material to a grinding cavity of a main machine by an electromagnetic vibration feeder, shoveling the material in the process of the same rotation of a shovel blade and grinding, throwing the material into a space between a grinding roller and a grinding ring to form a material padding layer, and grinding the material between the grinding roller and the grinding ring, thereby achieving the purpose of powder grinding. At the in-process of processing building stones, the grinding roller is the most impaired part easily, current grinding roller integrated forging shaping, its wall thickness is thicker, inside will be slower than outside cooling during the pouring, probably because the cooling is uneven when forging and produce phenomenons such as fracture, shrinkage porosity, gas pocket, it is of a specified duration when grinding roller and grinding ring cooperation crocus, the grinding roller surface produces fracture easily, not hard up situation, and the grinding roller is integrated forging shaping, needs whole change, and is with high costs.

SUMMERY OF THE UTILITY MODEL

Therefore, the Raymond mill roller structure is needed to be provided aiming at the conditions that the mill roller is used for a long time, the surface is easy to crack and the use cost is high.

The utility model provides a raymond grinding roller structure, includes grinding roller subassembly, barrel and grinding roller axle, the grinding roller axle passes through bearing movable mounting in the barrel, grinding roller axle lower extreme is provided with joint portion, grinding roller subassembly includes the outer sleeve, the inner tube, upper end cover and lower end cover, the inner tube sets up in the outer sleeve, be provided with the recess on the outer sleeve inner wall, be provided with the sand grip on the outer wall of inner tube, the sand grip joint is in the recess, the upper end cover with the lower end cover sets up respectively the upper end and the lower extreme of outer sleeve, joint portion runs through the upper end cover with inner tube inner wall joint, the end of joint portion with the lower end cover passes through bolted connection.

Preferably, the outer sleeve is made of high chromium cast iron.

Preferably, the cross section of each convex strip is trapezoidal, and the area of the root part of each convex strip is larger than that of the end part of each convex strip.

Preferably, the upper end of the shaft cylinder is provided with a fixed disc and an installation seat, the installation seat is connected with the fixed disc through a bolt, and the installation seat is hollow.

Preferably, the outer side edge of the mounting seat is provided with a lifting lug, and the cross arm shaft is transversely mounted in the lifting lug.

Preferably, a buffer spring is sleeved on the cross arm shaft and located between the two lifting lugs.

The utility model has the advantages that: 1. the grinding roller shaft is protected by the shaft barrel, the grinding roller assembly is driven by the motor to rotate through the grinding roller shaft, and the grinding roller and the shaft barrel synchronously revolve for grinding powder, so that the grinding efficiency is improved; 2. the outer sleeve made of high-chromium cast iron is arranged outside the inner sleeve, so that the grinding roller assembly has high wear resistance and toughness, good high-temperature resistance and corrosion resistance, integral hardness and wear resistance of the grinding roller assembly are improved, the outer sleeve can be conveniently and directly replaced when the grinding roller assembly is seriously worn, and the use cost is reduced.

Drawings

FIG. 1 is a perspective view of a Raymond mill roll according to one embodiment;

fig. 2 is a schematic view of a grinding roll assembly and a grinding roll shaft partially exploded.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, a raymond mill roller structure, including grinding roller subassembly 1, axle sleeve 2 and grinding roller axle 3, grinding roller axle 3 passes through bearing movable mounting in the axle sleeve 2, the 3 lower extremes of grinding roller axle is provided with joint portion 31, grinding roller subassembly 1 includes outer sleeve 11, inner tube 12, upper end cover 13 and bottom end cover 14, inner tube 12 sets up in the outer sleeve 11, be provided with recess 111 on the outer sleeve 11 inner wall, be provided with sand grip 121 on the outer wall of inner tube 12, sand grip 121 joint is in the recess 111, upper end cover 13 with bottom end cover 14 sets up respectively the upper end and the lower extreme of outer sleeve 11, joint portion 31 runs through upper end cover 13 with the 12 inner wall joint of inner tube, the end of joint portion 31 with bottom end cover 14 passes through bolted connection. Specifically, in this embodiment, the grinding roller structure is vertically arranged in a casing (not shown in the figure), and the outer ring of the grinding roller assembly 1 is provided with a grinding ring (not shown in the figure), so that the grinding roller assembly 1 can be matched with the grinding ring to grind stone into powder when rotating, and then the stone powder collection work is completed through devices such as a cyclone dust collector. Grinding roller subassembly 1 sets up at 2 lower extremes of axle sleeve to be connected with axle sleeve 2 through grinding roller axle 3, during the use, the motor drives grinding roller subassembly 1 through grinding roller axle 3 and rotates, and grinding roller axle 3 runs through axle sleeve 2 through the bearing, utilizes axle sleeve 2 protection grinding roller axle 2, avoids at the crocus in-process, and building stones striking grinding roller axle 3 reduces grinding roller axle 3's life. The grinding roller assembly 1 comprises an outer sleeve 11, an inner cylinder 12, an upper end cover 13 and a lower end cover 14, wherein the inner cylinder 12 is connected in the outer sleeve 11 in a clamped mode, protruding strips 121 which diffract along the axial direction are arranged outside the inner cylinder 12, the protruding strips 121 are correspondingly connected in a clamped mode in grooves 111 in the inner wall of the outer sleeve 11, the protruding strips and the grooves are matched closely, the grinding roller shaft 3 is prevented from driving the grinding roller assembly 1 to rotate, relative sliding occurs between the inner cylinder 12 and the outer sleeve 11, a double-cylinder sleeve connection design is used, the situation that the integral grinding roller with thick wall thickness is directly forged is avoided, the surface of the integral grinding roller needs to be replaced integrally after cracking, and the use cost is high. Furthermore, the upper end cover 13 and the lower end cover 14 are not arranged at the two ends of the outer sleeve 11, so that the sealing and dustproof effects can be achieved, dust is prevented from entering a gap between the outer sleeve 11 and the inner cylinder 12, the service life is prolonged, the outer surface of the outer sleeve 11 is cracked, and the outer sleeve is difficult to replace after being damaged. The lower end of the grinding roller shaft 3 is provided with a clamping part 31, and the clamping part 31 is clamped with the inner barrel 12, so that the grinding roller assembly 1 is driven to rotate conveniently. Specifically, the outer sleeve 11 is made of high-chromium cast iron, so that the use of the original high-manganese steel is avoided, and the service life is relatively short because the cast structure of the high-manganese steel is brittle, the mechanical property is not high after the solution treatment, and the hardness is low.

Specifically, the cross section of the protruding strip 121 is trapezoidal, and the area of the root of the protruding strip 121 is larger than that of the end of the protruding strip, so that the structural strength of the protruding strip 121 is improved, and breakage is prevented.

As shown in fig. 1, a fixed plate 21 and an installation seat 22 are installed at the upper end of the shaft cylinder 2, the installation seat 22 is connected with the fixed plate 21 through a bolt, and the installation seat 22 is hollow. Specifically, the mounting seat 22 is covered on the fixed disc 21 through the bolt, the mounting seat 22 is hollow, the motor is conveniently arranged in the mounting seat 22, the motor can be connected with the upper end of the grinding roller shaft 3 to drive the grinding roller shaft to rotate, the mounting seat 22 protects the motor, and the dustproof effect is good.

As shown in fig. 1, a hanging lug 221 is provided on an outer side edge of the mounting seat 22, and the cross arm shaft 4 is laterally mounted in the hanging lug 221. Specifically, realize the effect of revolution when grinding roller assembly 1 rotation, utilize cross arm axle 4 to run through lug 221, the output shaft of main motor can with cross arm axle 4 end connection, through cross arm axle 4, can drive shaft barrel 2 and grinding roller axle 3 revolution, and then realized when grinding roller assembly 1 rotation, revolute, it is better to the crocus effect of building stones.

As shown in fig. 1, the buffer spring 41 is sleeved on the cross arm shaft 4, the buffer spring 41 is positioned between the two lifting lugs 221, and the cross arm shaft 4 is likely to laterally shift from the lifting lugs 221 after being vibrated during the forced rotation process, so the buffer spring 41 is provided for protecting the lifting lugs 221 and the cross arm shaft 4, and energy is absorbed.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A Raymond mill roller structure is characterized in that: including the grinding roller subassembly, barrel and grinding roller axle, the grinding roller axle passes through bearing movable mounting and is in the barrel, grinding roller axle lower extreme is provided with joint portion, the grinding roller subassembly includes the outer sleeve, and the inner tube, upper end cover and lower end cover, the inner tube sets up in the outer sleeve, be provided with the recess on the outer sleeve inner wall, be provided with the sand grip on the outer wall of inner tube, the sand grip joint is in the recess, the upper end cover with the lower end cover sets up respectively the upper end and the lower extreme of outer sleeve, joint portion runs through the upper end cover with inner tube inner wall joint, the end of joint portion with the lower end cover passes through bolted connection.

2. The raymond mill roll structure of claim 1, wherein: the outer sleeve is made of high-chromium cast iron.

3. The raymond mill roll structure of claim 1, wherein: the cross section of sand grip is trapezoidal, the root area of sand grip is greater than the area of its tip.

4. The raymond mill roll structure of claim 1, wherein: the mounting structure is characterized in that a fixed disc and a mounting seat are mounted at the upper end of the shaft cylinder, the mounting seat is connected with the fixed disc through bolts, and the mounting seat is hollow.

5. The raymond mill roll structure of claim 4, wherein: the outside limit portion of mount pad is provided with the lug, and the cross arm axle transverse installation is in the lug.

6. The raymond mill roll structure of claim 5, wherein: the cross arm shaft is sleeved with a buffer spring, and the buffer spring is positioned between the two lifting lugs.