CN218654698U

CN218654698U - Compression roller for roller press

Info

Publication number: CN218654698U
Application number: CN202223254286.5U
Authority: CN
Inventors: 汪洪波; 孙海涛
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-03-21
Anticipated expiration: 2032-12-06

Abstract

The utility model relates to a roll squeezer especially relates to a compression roller for roll squeezer. The roller press comprises a roller shaft, a lining, a plurality of outer grinding plates and grinding blocks. The bush is fixedly sleeved at the middle section of the outer side surface of the roll shaft. The lateral surface of bush is seted up a plurality of crisscross through-holes that distribute. The outer grinding plates are annularly distributed on the outer side face of the lining and are combined into an annular sleeve. The outer grinding plate is n-shaped and comprises an arc surface part and two end surface parts perpendicular to the arc surface part. The cambered surface portion is attached to the outer wall surface of the bushing, and a first round hole matched with the through hole is formed in the side surface of the cambered surface portion along the radial direction. The end face portion is attached to the end face of the bushing and detachably connected with the bushing. The grinding block is positioned in the first round hole. The upper part of the grinding block protrudes out of the outer side surface of the arc surface part of the outer grinding plate, and the contact surface profiles of the grinding block and the outer grinding plate are matched. The lower part of the grinding block is positioned in the through hole of the bushing. The utility model discloses utilize outer wear plate to act as the wearing layer, set up split type with the wearing layer, need not whole replacement when the damage appears.

Description

Compression roller for roller press

Technical Field

The utility model relates to a roll squeezer especially relates to a compression roller for roll squeezer.

Background

The roller press is a grinding device for brittle materials, and is suitable for grinding materials such as cement clinker, cement raw materials (limestone, sandstone and the like), gypsum, coal, quartz sand, iron ore, blast furnace slag and the like. The main working principle of the roller press is that materials are extruded and crushed by two press rollers rotating in opposite directions, and discharged powder contains a certain proportion of fine finished products. In the interior of the non-finished product granules a large number of cracks are produced, so that the grindability of the material is improved.

The compression roller is a core component of the roller press, and the damage of the compression roller directly influences the operation reliability of the roller press. The traditional roller press is integrally forged by low alloy, and a wear-resistant layer is welded on the surface of the roller press. When damage occurs to the press roll, for example, when the surface has many pockets, maintenance or replacement has to be performed. However, the press roll is bulky, and is not easy to operate and high in maintenance cost if replaced. To this for improving the life of compression roller, someone adopts the detachable mode installation with the roll body and the wearing layer of compression roller, when the compression roller surface has the damage, simplifies the maintenance operation or reduces the change operation through the replacement wearing layer. However, for a roll press with a large volume, the replacement of the entire wear-resistant layer still has a large replacement cost and time, and particularly, the wear-resistant layer is only partially damaged, but the overall operation is affected, so that the wear-resistant layer is replaced. Not only has resource waste to a certain extent, but also increases the operation cost.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is necessary to provide a press roll for a roll press, which is directed to the problem of resource waste and increase in running cost due to partial damage of the wear-resistant layer and the overall replacement.

A press roller for a roller press comprises a roller shaft, a bushing, a plurality of outer grinding plates and grinding blocks.

The bush is fixedly sleeved at the middle section of the outer side surface of the roll shaft. The outer side surface of the bush is radially provided with a plurality of through holes which are distributed in a staggered mode.

The outer grinding plates are annularly distributed on the outer side face of the bushing. A plurality of outer grinding plates are enclosed into an annular sleeve, and the lining is positioned inside the annular sleeve. The outer grinding plate is n-shaped and comprises an arc surface part and two end surface parts perpendicular to the arc surface part. The cambered surface portion is attached to the outer wall surface of the lining, and a first round hole matched with the through hole in the lining is formed in the side surface of the cambered surface portion along the radial direction. The end face portion is attached to the end face of the bushing and detachably connected with the bushing.

The grinding block is positioned in the first round hole. The upper part of the grinding block protrudes out of the outer side surface of the arc surface part of the outer grinding plate, and the contact surface profiles of the grinding block and the outer grinding plate are matched. The lower part of the grinding block is positioned in the through hole of the bushing. The nut is in threaded connection with the lower part of the grinding block.

Further, the grinding block comprises an arc-shaped block and a stud. The arc-shaped block forms the upper part of the grinding block, and the stud forms the lower part of the grinding block. One end part of the stud is vertically arranged on the central line of the arc-shaped block. The nut is arranged in the through hole of the bushing. The outer diameter of the nut is larger than the diameter of the first round hole of the outer grinding plate.

Furthermore, a gasket is arranged in a gap between the nut and the outer grinding plate, and the gasket is attached to the cambered surface part of the outer grinding plate and is positioned in the through hole of the bushing.

Further, a washer is sleeved on the outer surface of the stud. The outer diameter of the washer is greater than the outer diameter of the nut.

Further, the through hole of the bush is constituted by a first hole portion and a second hole portion. The diameter of the first hole portion is larger than the diameter of the second hole portion. The washer is located in the first bore portion and the nut is located in the second bore portion.

In one embodiment, the end face portion of the outer wear plate is connected to the bushing by a threaded rod.

Furthermore, a second round hole is formed in the end face of the outer grinding plate, a screw hole in threaded connection with the screw rod is formed in the end face of the bushing, and the screw rod penetrates through the second round hole of the outer grinding plate and is in threaded connection with the screw hole of the bushing.

Further, the diameter of the second round hole of the outer grinding plate is smaller than that of the screw end cap and larger than that of the screw hole of the bushing.

In one embodiment, the end surface portion of the outer grinding plate is connected with the bushing through a fixture block. The end face of the outer grinding plate is provided with a first clamping hole, and the end face of the bushing is provided with a second clamping hole. The first clamping hole and the second clamping hole are coaxially arranged and are in clearance fit with the clamping block.

Furthermore, the end face of the outer grinding plate is in a fan shape, and the end face of the outer grinding plates are spliced into a ring to shield the end face of the bushing.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model is provided with a plurality of outer grinding plates to form an annular sleeve which is used as a wear-resistant layer; when the outer grinding plate is damaged, the damaged outer grinding plate is replaced without integral replacement, so that the replacement cost is reduced;

2. the utility model can not only improve the anti-skid property between the compression rollers, but also stress the material more quickly by arranging the grinding block on the outer grinding plate; the grinding block and the outer grinding plate can be detachably arranged, when the upper part of the grinding block is abraded seriously due to the local stress of the outer grinding plate, the grinding block which is abraded seriously can be replaced, the abrasion of the outer grinding plate is reduced, the service life of the outer grinding plate is prolonged, the operational reliability of the compression roller is guaranteed, the replacement cost is further reduced, and the resource waste is avoided.

Drawings

Fig. 1 is a schematic structural view of the press roller of the present invention;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 3 is a side view of the press roll according to FIG. 1;

fig. 4 is an enlarged view of a point a based on fig. 2.

Description of the main elements

1. A roll shaft; 2. a bushing; 3. an outer grinding plate; 31. an arc surface portion; 32. an end surface portion; 4. grinding blocks; 41. an arc-shaped block; 42. a stud; 43. a nut; 44. a gasket.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1 and 2, fig. 1 shows a schematic view of a roll, and fig. 2 shows a schematic view of a cross-section taken along an axial direction of the roll. The utility model provides a compression roller for roll squeezer, including roller 1, bush 2, outer grinding plate 3 and grinding block 4.

The inner diameter of the bush 2 matches the outer diameter of the middle of the roll shaft 1. The bush 2 can be fixedly connected with the roll shaft 1 by welding. The liner 2 is made of hard alloy. The lateral surface of bush 2 radially has seted up a plurality of crisscross through-holes that distribute for hold abrasive brick 4, make outer grinding plate 3 can laminate bush 2 and install.

FIG. 3 is a side view of the platen. The number of the outer grinding plates 3 is at least eight, so that the arc length of each outer grinding plate 3 is not too large. A plurality of outer wear plate 3 ring-type distribution can enclose into an annular cover in the lateral surface of bush 2, and bush 2 is located inside the annular cover. The outer wear plate 3 comprises an arc-shaped portion 31 and two end surface portions 32. Two terminal surface portions 32 and an cambered surface portion 31 constitute an outer grinding plate 3 of pi "style of calligraphy, when a plurality of outer grinding plate 3 enclose synthetic annular cover, cambered surface portion 31 encloses synthetic sleeve, if terminal surface portion 32 adopts fan-shaped, and all terminal surface portion 32 radians be 360 degrees together, then a plurality of terminal surface portions 32 that are located same end can enclose synthetic ring, the internal diameter of ring is greater than the diameter of roller 1 middle-end, consequently, the annular cover not only can shelter from the lateral surface of bush 2, also can shelter from the terminal surface of bush 2.

In addition, the side of the arc surface portion 31 is radially provided with first circular holes which are distributed in a staggered manner, and the distribution of the first circular holes is consistent with that of the through holes. When the arc surface portion 31 is attached to the lining plate, the position is adjusted so that the first circular hole and the through hole are overlapped. Be convenient for grind piece 4 and install on cambered surface portion 31 and grind the one end of piece 4 and can pass first round hole and enter into the through-hole of bush 2 in, do not influence the laminating installation between outer grinding plate 3 and the bush 2.

It should be noted that, adopt demountable installation between outer grinding plate 3 and bush 2, because the quantity of outer grinding plate 3 is a plurality of, when certain outer grinding plate 3 appears damaging, only need to replace this outer grinding plate 3 can, need not whole replacement, other outer grinding plate 3 still can normal use, reduce the cost of replacement when guaranteeing not to injure bush 2. For the detachable mode, a screw connection or a snap connection mode can be adopted, but the detachable mode is not limited to the mode mentioned in the embodiment.

For the screw connection, a screw rod can be adopted, a second round hole is formed in the arc surface portion 31, a screw hole is formed in the end face of the bushing 2, the first round hole is adjusted to be overlapped with the through hole, the second round hole is adjusted to be overlapped with the screw hole, and the outer grinding plate can be installed. The diameter of the second round hole is smaller than that of the screw rod end cap and larger than that of the screw hole, and the screw rod penetrates through the second round hole and is in threaded connection with the screw hole, so that the outer grinding plate 3 is installed on the lining 2. The screw rod breaks away from the screw and can realize the dismantlement operation of outer grinding plate 3, and the installation is dismantled the equal simple easy operation of operation.

The clamping can be realized by adopting a clamping block, a first clamping hole is formed in the end face part 32, a second clamping hole is formed in the end face of the lining 2, when the first round hole is overlapped with the through hole, the first clamping hole and the second clamping hole are also overlapped, the size of the first clamping hole is consistent with that of the second clamping hole, the clamping block is in clearance fit with the first clamping hole and the second clamping hole to complete clamping, and the outer grinding plate 3 is arranged on the lining 2. The fixture block breaks away from the second card hole and can realize the dismantlement operation of outer grinding plate 3, and the installation is dismantled the equal simple easy operation of operation.

Please refer to fig. 4, which is a partial enlarged view of fig. 2. Grinding block 4 and outer grinding plate 3 can be dismantled and be connected, and grinding block 4 is installed in first round hole, and the shape is similar to the T type. The grinding block 4 comprises an arc-shaped block 41 and a stud 42. The inner side surface of the arc-shaped block 41 is attached to the outer side surface of the outer grinding plate 3, one end of the stud 42 is vertically arranged on the central line of the arc-shaped block 41 and is fixedly connected with the arc-shaped block 41, and the other end of the stud penetrates through the first round hole of the outer grinding plate 3 and is located in the through hole of the bushing 2. The outer surface of the stud 42 may be provided with a thread, and the stud 42 is connected with the thread of the stud 42 by a nut 43, so that the stud 42 is installed on the outer grinding plate 3, and the outer diameter of the nut 43 is larger than the diameter of the first circular hole.

The arc piece 41 is located the outside of outer grinding plate 3, and nut 43 is located the inboard of outer grinding plate 3, and arc piece 41 not only can prevent that the compression roller from skidding as the contact of compression roller, and pressure is exerted for the material that simultaneously can be faster, also slows down outer grinding plate 3's rate of wear to a certain extent. A washer 44 may be applied between the nut 43 and the inner side of the outer wear plate 3 to improve the tightness of the connection between the abrasive segments 4 and the outer wear plate 3. The washer 44 is made of elastic material such as rubber or silica gel, and fills up the gap between the nut 43 and the outer grinding plate 3, thereby improving the adhesion between the nut 43 and the inner side of the outer grinding plate 3. A washer 44 may be fitted over the outer surface of the stud 42. The outer diameter of the washer 44 is larger than the outer diameter of the nut 43, and the inner diameter of the washer 44 is larger than the inner diameter of the stud 42, so that the washer 44 can be easily fitted over the outside of the stud 42.

The through hole of the bush 2 is configured by a first hole portion and a second hole portion in order to accommodate not only the stud 42 but also the washer 44 and the nut 43. The diameter of the first hole portion is larger than the diameter of the second hole portion. The washer 44 is located within the first bore portion. The nut 43 is located in the second bore portion. It is emphasized that, since the outer grinding plate 3 is arc-shaped, after the grinding blocks 4 are connected with the outer grinding plate 3, the central lines of all the grinding blocks 4 intersect with the axis of the bushing 2. The diameter of the first hole portion is therefore larger than the washer 44 and the diameter of the second hole portion is larger than the nut 43, so that the grinding block 4 can easily enter the through hole when the outer grinding plate 3 is mounted on the backing plate.

When the roll squeezer is maintained regularly, if the arc blocks 41 of some grinding blocks 4 are worn seriously, the outer grinding plate 3 can be detached from the press roll, the arc blocks 41 can be replaced by new ones, and the nut 43 and the gasket 44 can be recycled, so that the purpose of prolonging the service life of the outer grinding plate 3 is achieved, and the operation cost is further reduced. Because the arc piece 41 of abrasive brick 4 contacts with the material frequently, the wearing and tearing of outer grinding plate 3 are reduced in the time of arc piece 41 wearing and tearing, replace new arc piece 41 and also can ensure preventing of compression roller and skid and exert pressure to the material more fast. Especially when the pressure roller atress position is inhomogeneous, it is severe to replace new arc piece 41 in time and reduce outer grinding plate 3 local wear, reaches increase of service life's purpose.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A press roll for a roll press, comprising:

a roll shaft (1);

characterized in that the press roll further comprises:

the bushing (2) is fixedly sleeved on the middle section of the outer side surface of the roll shaft (1); the outer side surface of the bush (2) is provided with a plurality of through holes which are distributed in a staggered manner along the radial direction;

a plurality of outer grinding plates (3) which are annularly distributed on the outer side surface of the lining (2); a plurality of outer grinding plates (3) are enclosed into an annular sleeve, and the lining (2) is positioned inside the annular sleeve; the outer grinding plate (3) is n-shaped and comprises an arc surface part (31) and two end surface parts (32) which are vertical to the arc surface part (31); the arc surface part (31) is attached to the outer wall surface of the bushing (2), and a first round hole matched with the through hole in the bushing (2) is formed in the side surface of the arc surface part (31) in the radial direction; the end surface part (32) is attached to the end surface of the bushing (2) and is detachably connected with the bushing (2);

the upper part of the grinding block (4) positioned in the first round hole protrudes out of the outer side surface of the cambered surface part (31) of the outer grinding plate (3), and the contact surface profiles of the grinding block and the cambered surface part are matched; the lower part of the grinding block (4) is positioned in the through hole of the lining (2);

and the nut is in threaded connection with the lower part of the grinding block (4).

2. Press roll for roll presses according to claim 1, characterised in that the grinding block (4) comprises an arc-shaped block (41) and a stud (42); the arc-shaped block (41) forms the upper part of the grinding block (4), and the stud (42) forms the lower part of the grinding block (4); one end part of the stud (42) is vertically arranged on the central line of the arc-shaped block (41); the nut (43) is arranged in the through hole of the bushing (2); the outer diameter of the nut (43) is larger than the diameter of the first round hole of the outer grinding plate (3).

3. The press roll for the roller press according to claim 2, characterized in that a washer (44) is arranged in the gap between the nut (43) and the outer grinding plate (3), and the washer (44) is attached to the cambered surface (31) of the outer grinding plate (3) and is positioned in the through hole of the bushing (2).

4. The press roll for roll presses according to claim 3, characterized in that the washer (44) is fitted over the outer surface of the stud (42); the washer (44) has an outer diameter larger than an outer diameter of the nut (43).

5. The press roll for roll presses according to claim 4, characterized in that the through hole of the bushing (2) is constituted by a first hole portion and a second hole portion; the diameter of the first hole portion is larger than that of the second hole portion; the washer (44) is located in the first bore portion and the nut (43) is located in the second bore portion.

6. A press roll for a roller press according to claim 1, characterised in that the end surface portion (32) of the outer grinding plate (3) is connected to the bushing (2) by means of a screw.

7. The press roll for the roll squeezer according to claim 6, wherein the end surface portion (32) of the outer grinding plate (3) is provided with a second circular hole, the end surface of the bushing (2) is provided with a screw hole in threaded connection with the screw rod, and the screw rod penetrates through the second circular hole of the outer grinding plate (3) and is in threaded connection with the screw hole of the bushing (2).

8. Press roll for a roller press according to claim 7, characterised in that the diameter of the second circular hole of the outer grinding plate (3) is smaller than the diameter of the screw end cap and larger than the diameter of the threaded hole of the bushing (2).

9. The press roll for roll presses according to claim 1, characterized in that the end surface portion (32) of the outer grinding plate (3) is connected to the bushing (2) by a snap block; a first clamping hole is formed in the end surface part (32) of the outer grinding plate (3), and a second clamping hole is formed in the end surface of the bushing (2); the first clamping hole and the second clamping hole are coaxially arranged and are in clearance fit with the clamping block.

10. The press roll for roll presses according to claim 1, characterized in that the end faces (32) of the outer grinding plates (3) are in the shape of a sector, and the end faces (32) of a plurality of outer grinding plates (3) are spliced into a ring to shield the end faces of the lining (2).