CN215963809U - Squeezing roller of roller press - Google Patents
Squeezing roller of roller press Download PDFInfo
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- CN215963809U CN215963809U CN202122245034.5U CN202122245034U CN215963809U CN 215963809 U CN215963809 U CN 215963809U CN 202122245034 U CN202122245034 U CN 202122245034U CN 215963809 U CN215963809 U CN 215963809U
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Abstract
The utility model discloses a squeezing roller of a roller press, which solves the problem that the service life of the squeezing roller of the roller press in the prior art needs to be improved. The utility model discloses a contain roller and roller shell, the roller shell cup joints on the roller, wherein the roller shell contains the base member, the stud, the transition layer, wearing layer and wear-resisting decorative pattern, the inlay casting is equipped with the stud on the base member, the roller shell divide into the base member in proper order along radial outside circumference by center pin department, the transition layer, wearing layer and wear-resisting decorative pattern, be equipped with the transition layer on the base member outer ring face, be equipped with the wearing layer on the outer anchor ring face of transition layer, be equipped with wear-resisting decorative pattern on the outer anchor ring face of wearing layer, wherein the terminal surface of stud does not surpass the outer anchor ring face of wearing layer. The wear-resistant patterns in the technology not only have a wear-resistant effect, but also have the functions of extruding materials by the conventional raised parts and raking materials during extrusion feeding. The molding of different decorative patterns can produce different crushing strength, and crushing efficiency is better, takes off the material effect and also can increase on a par to improve whole crushing efficiency.
Description
Technical Field
The utility model relates to the field of industrial crushing, in particular to a squeezing roller of a roller press.
Background
The roller press is novel high-efficiency energy-saving powder equipment, the material is crushed by high-stress extrusion, and the roller press has unique advantages and prospects in the crushing industries of cement, metallurgy, ore and the like due to high efficiency and energy conservation. When the squeeze roll crushes materials such as ore, cement clinker and the like, the roll surface bears violent high-stress abrasive wear, plough wear and fatigue damage, so the wear resistance and the service life of the roll surface of the squeeze roll become key technical indexes of equipment such as a roll squeezer.
At present, the main technical measures for improving the wear resistance and service life of the roll surface of the squeeze roll at home and abroad are classified into 3 types:
1. different wear-resistant alloy materials are directly overlaid on the surface of the common material roller body to form a wear-resistant layer so as to improve the wear resistance of the roller surface. However, if a high-hardness hardfacing material is selected to improve wear resistance, the roll surface is prone to cracking, so that the hardfacing layer is peeled off, and the service life of the roll body is affected. And the selected low-hardness wear-resistant surfacing material has poor wear resistance. Meanwhile, under the strong extrusion of hard materials, the pattern layer formed by surfacing is easy to break away from the surface of the roller body and fall off, so that the thickness of surfacing is limited to a certain extent. The wear resistance of the roll surface manufactured by the method is difficult to be greatly improved, the wear resistance life of the roll surface is generally 8000 hours, and the working life of the roll surface cannot meet the requirements of users.
2. The roller surface is punched and embedded with a hard alloy cylinder to improve the wear resistance of the roller surface. Namely, round holes with certain diameter and depth and arranged according to a rule are firstly processed on the surface of the roller body, and then the manufactured hard alloy cylinder is glued, cold-inlaid or brazed into the round holes to form the stud. The wear resistance of the roll surface is ensured by high-hardness hard alloy. The service life of the roller surface can reach about 10000 hours under ideal conditions, but the hard alloy cylinder in the structure has high manufacturing cost and high operation and maintenance cost, and the hard alloy cylinder and the roller body are combined mechanically, so that the roller body can cause the hard alloy cylinder to fall off after long-time operation, once the roller surface alloy cylinder falls off, ideal repair can not be carried out rapidly on site, and simultaneously, the hard alloy cylinder is connected through a mechanical mode after the base body is punched, so that the base body is easy to crack, and the base body is scrapped. Therefore, this structure cannot be widely popularized in practice.
3. The whole body is made of wear-resistant materials to cast and extrude the roller sleeve. The whole roller body and the roller sleeve are integrally formed by high-hardness wear-resistant materials, and the roller has the characteristics of large diameter of the roller body, short and thick shape and large diameter difference between the roller body and the roller neck. The whole body of the structure is made of wear-resistant materials, so that the wear-resistant layer is thick and the service life is long. However, the manufacturing process is complex, the production cost is high, the roller surface is not easy to maintain after being abraded, the size cannot be recovered, the operation efficiency of equipment is influenced, and production accidents are caused by sudden fracture in the operation process, so the use is not wide.
The premature failure of the wear-resistant layer on the surface of the roller body of the extrusion roller is a challenging technical problem in the crushing industry, and a better and effective solution is needed at present.
SUMMERY OF THE UTILITY MODEL
The utility model solves the problem that the service life of the extrusion roller of the roller press in the prior art needs to be improved, and provides the extrusion roller of the roller press with reasonable structure and long service life.
The technical scheme of the utility model is to provide a squeezing roller of a roller press, which has the following structure: the roller sleeve is sleeved on the roller shaft and comprises a base body, studs, a transition layer, a wear-resistant layer and wear-resistant patterns, the studs are arranged on the base body, the roller sleeve is sequentially divided into the base body, the transition layer, the wear-resistant layer and the wear-resistant patterns from a central shaft to the outer circumference along the radial direction, the transition layer is arranged on the outer ring surface of the base body, the wear-resistant layer is arranged on the outer ring surface of the transition layer, the wear-resistant patterns are arranged on the outer ring surface of the wear-resistant layer, and the end faces of the studs do not exceed the outer ring surface of the wear-resistant layer.
Preferably, studs are cast on the substrate.
Preferably, the shape of the wear-resistant patterns is parallel straight patterns, rhombic crossed patterns, parallel zigzag patterns, parallel herringbone patterns, point-shaped distributed patterns or strip-shaped distributed patterns.
Preferably, wear-resistant convex points are arranged in the intervals of the rhombic crossed patterns.
Preferably, the dots of the dot-shaped distributed pattern are randomly distributed or the broken points are linearly distributed.
Preferably, the distributed stripe pattern is an intermittent linear distribution.
Preferably, the cross-sectional shape of the stud perpendicular to the centerline thereof is circular, square, triangular or polygonal.
Preferably, the roll shaft and the roll sleeve are in interference connection or are in key connection with each other.
Compared with the prior art, the extrusion roller of the roller press has the following advantages:
1. the stud is directly cast in the base member, has separated the base member surface, makes its dispersion be a plurality of fritters, furthest reduces stress concentration's harm, punches earlier than on complete base member, and the condition that the stud was connected to other mechanical connection modes of rethread compares, and the base member of cast-in stud is more difficult to the fracture, reaches the damaged back-up effect of wearing layer simultaneously.
2. The roller sleeve is provided with the transition layer and the wear-resistant layer with gradually enhanced hardness from inside to outside, so that the metallurgical bonding strength of the wear-resistant layer and the base body is enhanced, and the defect of insufficient wear resistance of the base body is overcome. The wear-resistant patterns can be in various shapes, are replaceable and repairable replacement layers, can realize surfacing reinforcement without disassembling a machine, greatly reduces the probability of integrally replacing the squeeze roller, and has low maintenance frequency of key crushing parts, short period and low cost. The wear-resistant patterns not only have the wear-resistant function, but also have the functions of extruding materials by the conventional raised parts and raking materials during extrusion feeding. The molding of different decorative patterns can produce different crushing strength, and crushing efficiency is better, takes off the material effect and also can increase on a par to improve whole crushing efficiency.
3. The wear-resistant patterns improve the service life of the extrusion roller with a conventional structure from 8000 hours to over 16000 hours under the working condition that the whole extrusion roller is not stopped in all weather.
Drawings
FIG. 1 is a schematic cross-sectional structure of the present invention;
FIG. 2 is a schematic view of a parallel linear pattern according to the present invention;
FIG. 3 is a schematic diagram of the structure of a diamond cross pattern according to the present invention;
FIG. 4 is a schematic view of a diamond cross pattern with wear resistant raised points in accordance with the present invention;
FIG. 5 is a schematic view of a parallel sawtooth pattern of the present invention;
FIG. 6 is a schematic structural view of a parallel herringbone pattern of the present invention;
FIG. 7 is a schematic structural diagram of a dotted pattern according to the present invention;
fig. 8 is a schematic structural view of the distributed rib pattern of the present invention.
In the description of the attached drawings, the reference numeral 1 is a roll shaft, 2 is a roll sleeve, 2-1 is a base body, 2-2 is a stud, 2-3 is a transition layer, 2-4 is a wear-resistant layer, 3 is a wear-resistant pattern, 3-1 is a parallel straight pattern, 3-2 is a rhombic cross pattern, 3-3 is a parallel zigzag pattern, 3-4 is a parallel herringbone pattern, 3-5 is a point-shaped distributed pattern, 3-6 is a strip-shaped distributed pattern, and 3-2-1 is a wear-resistant convex point.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The squeezing roller of the roller press of the utility model is further explained in the following with reference to the attached drawings and the detailed description: as shown in the figure, the roller sleeve comprises a roller shaft 1 and a roller sleeve 2, the roller sleeve 2 is sleeved on the roller shaft 1, wherein the roller sleeve 2 comprises a base body 2-1, studs 2-2, a transition layer 2-3, a wear-resistant layer 2-4 and wear-resistant patterns 3, the studs 2-2 are arranged on the base body 2-1, the roller sleeve 2 is sequentially divided into the base body 2-1, the transition layer 2-3, the wear-resistant layer 2-4 and the wear-resistant patterns 3 from the central axis to the outer circumference along the radial direction, the transition layer 2-3 is sleeved on the outer annular surface of the base body 2-1, the wear-resistant layer 2-4 is sleeved on the outer annular surface of the transition layer 2-3, the wear-resistant patterns 3 are arranged on the outer annular surface of the wear-resistant layer 2-4, and the tail end of the studs 2-2 does not exceed the outer annular surface of the wear-resistant layer 2-4. The studs 2-2 can be arranged on the base body 2-1 by means of insert casting. The cross section of the stud 2-2 perpendicular to the center line is circular, square, triangular or polygonal.
The manufacturing process comprises the steps of fixing the stud 2-2 through a mold, pouring alloy liquid to form a structure of the matrix 2-1, embedding the stud 2-2 with a high height, welding a transition layer 2-3 with a certain thickness on the outer surface of the matrix 2-1, welding a wear-resistant layer 2-4 with a certain thickness on the outer surface of the transition layer 2-3, enabling the outer surface of the wear-resistant layer 2-4 to be slightly larger than or flush with the end face of the stud 2-2, and overlaying wear-resistant patterns 3 on the outer surface of the wear-resistant layer 2-4.
The transition layer 2-3 is arranged to prevent the wear-resistant layer 2-4 from being directly welded on the substrate 2-1, and the wear resistance and the mechanical strength of the wear-resistant layer and the wear-resistant layer are different, so that the defect of low connection firmness is caused. The hardness of the transition layer 2-3 is greater than that of the base body 2-1 material and less than that of the wear-resistant layer 2-4, and the transition layer mainly has the function of reliably connecting two materials with larger hardness difference on the inner surface and the outer surface. With utility model application No. CN201920528581.4, applicant: compared with the utility model patent disclosed by Zhengzhou mechanical research institute Co., Ltd, the transition layer 2-3, the stud 2-2 and the wear-resistant layer 2-4 which are added can better avoid the loosening of the inlaid and welded wear-resistant material and can also avoid the scrapping of the parent body caused by the cracking of the squeeze roller sleeve 2 serving as the parent body.
The stud 2-2 is made of hard alloy, the stud 2-2 exists in the base body 2-1, the transition layer 2-3 and the wear-resistant layer 2-4 at the same time, even if the wear-resistant layer 2-4 is consumed, the stud 2-2 can still replace the base body to achieve high-strength extrusion action, the hardness and the wear resistance of the wear-resistant layer 2-4 can be in the same level as those of the stud 2-2, a large amount of damage of the wear-resistant layer 2-4 caused by untimely maintenance is avoided, the phenomenon that the whole extrusion roller is replaced by disassembling the machine is further avoided, the times and the period of shutdown maintenance are reduced, and the time cost caused by the maintenance process is greatly reduced.
The stud 2-2 of the insert casting is connected with the base body 2-1, the transition layer 2-3 and the wear-resistant layer 2-4, the purpose that stable connection and no falling off are achieved by arranging corresponding grooves and protrusions between every two layers is achieved, and the backup function of stress separation on the surface of the base body 2-1 and breakage of the wear-resistant layer 2-4 is achieved. The stud 2-2 is directly cast in the base body 2-1 in an embedding way, the surface of the base body 2-1 is separated, the stud is dispersed into a plurality of small blocks, the damage of stress concentration is reduced to the maximum extent, and compared with the situation that the complete base body 2-1 is firstly punched and then the stud 2-2 is connected through other mechanical connection modes, the base body 2-1 of the stud 2-2 is not easy to crack in an embedding way.
The shape of the wear-resistant pattern 3 is a parallel straight pattern 3-1, a rhombic cross pattern 3-2, a parallel zigzag pattern 3-3, a parallel herringbone pattern 3-4, a point distributed pattern 3-5 or a strip distributed pattern 3-6. The decorative pattern is ground off, can carry out repeated preparation through the mode of build-up welding again, only need to operate in the maintenance process of shutting down can, need not tear the machine open, reduce whole maintenance volume, practice thrift the time cost of maintenance process.
The wear-resistant raised points 3-2-1 are arranged in the intervals of the rhombic cross patterns 3-2, the wear-resistant raised points 3-2-1 are not arranged, and most of extrusion and crushing effects can be realized through the rhombic cross patterns 3-2 when the wear-resistant raised points 3-2-1 are not arranged. The wear-resistant convex points 3-2-1 and the rhombic cross patterns 3-2 are obtained by the same operation, are a broken and synergistic convex structure on the rhombic cross patterns 3-2, and can crack materials more easily.
The points of the dotted distributed patterns 3-5 can be randomly distributed or the points of the dotted distributed patterns can be distributed in a straight line manner, and the strip distributed patterns 3-6 can be distributed in an interrupted straight line manner, so that various pattern combinations can be expanded.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A roll squeezer squeeze roll which characterized in that: comprises a roll shaft (1) and a roll sleeve (2), the roll sleeve (2) is sleeved on the roll shaft (1), wherein the roller sleeve (2) comprises a base body (2-1), studs (2-2), a transition layer (2-3), a wear-resistant layer (2-4) and wear-resistant patterns (3), the studs (2-2) are arranged on the base body (2-1), the roller sleeve (2) is sequentially divided into the base body (2-1), the transition layer (2-3), the wear-resistant layer (2-4) and the wear-resistant patterns (3) from the central axis to the outer circumference along the radial direction, the transition layer (2-3) is arranged on the outer annular surface of the base body (2-1), the wear-resistant layer (2-4) is arranged on the outer annular surface of the transition layer (2-3), the wear-resistant patterns (3) are arranged on the outer annular surface of the wear-resistant layer (2-4), wherein the end surface of the stud (2-2) does not exceed the outer annular surface of the wear-resistant layer (2-4).
2. The roll press squeeze roll of claim 1, characterized in that: studs (2-2) are cast in the base body (2-1).
3. The roll press squeeze roll of claim 1, characterized in that: the wear-resistant patterns (3) are parallel straight patterns (3-1), rhombic crossed patterns (3-2), parallel zigzag patterns (3-3), parallel herringbone patterns (3-4), point distributed patterns (3-5) or strip distributed patterns (3-6).
4. The roll press squeeze roll of claim 3, characterized in that: wear-resistant convex points (3-2-1) are arranged in the intervals of the rhombic crossed patterns (3-2).
5. The roll press squeeze roll of claim 3, characterized in that: the points of the dotted distributed patterns (3-5) are distributed in order or in a breakpoint linear mode.
6. The roll press squeeze roll of claim 3, characterized in that: the strip-shaped distributed patterns (3-6) are distributed in an intermittent linear mode.
7. The roll press squeeze roll of claim 1, characterized in that: the cross section of the stud (2-2) perpendicular to the center line is circular, square, triangular or polygonal.
8. The roll press squeeze roll of claim 1, characterized in that: the roll shaft (1) and the roll sleeve (2) are in interference connection or are in key connection with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122245034.5U CN215963809U (en) | 2021-09-16 | 2021-09-16 | Squeezing roller of roller press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122245034.5U CN215963809U (en) | 2021-09-16 | 2021-09-16 | Squeezing roller of roller press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215963809U true CN215963809U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122245034.5U Active CN215963809U (en) | 2021-09-16 | 2021-09-16 | Squeezing roller of roller press |
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| CN (1) | CN215963809U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669363A (en) * | 2022-04-05 | 2022-06-28 | 武汉华材表面科技有限公司 | Stud arranging structure of roller press roller sleeve of roller surface full surface stud |
| CN115055269A (en) * | 2022-07-15 | 2022-09-16 | 郑州机械研究所有限公司 | Wear-resistant structure and preparation method thereof |
-
2021
- 2021-09-16 CN CN202122245034.5U patent/CN215963809U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669363A (en) * | 2022-04-05 | 2022-06-28 | 武汉华材表面科技有限公司 | Stud arranging structure of roller press roller sleeve of roller surface full surface stud |
| CN114669363B (en) * | 2022-04-05 | 2023-09-01 | 武汉华材表面科技有限公司 | Column nail arrangement structure of roller press roller sleeve with full-face column nails on roller surface |
| CN115055269A (en) * | 2022-07-15 | 2022-09-16 | 郑州机械研究所有限公司 | Wear-resistant structure and preparation method thereof |
| CN115055269B (en) * | 2022-07-15 | 2024-03-26 | 郑州机械研究所有限公司 | Wear-resistant structure and preparation method thereof |
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