CN121016900A - A crushing device for raw materials used in cement production - Google Patents

Abstract

The invention relates to the technical field of crushing equipment, in particular to a crushing device for raw materials for cement production, which comprises a crushing box, wherein a first crushing roller and a second crushing roller which synchronously and reversely rotate are arranged in the crushing box, the first crushing roller and the second crushing roller have the same structure, each of the first crushing roller and the second crushing roller comprises a driving roller, a fixed sleeve, a rubber sleeve and a crushing ring which are coaxially arranged in sequence from inside to outside, the crushing rings are provided with a plurality of crushing rings which are uniformly distributed along the axial direction of the rubber sleeve, the fixed sleeve is provided with a plurality of tension ropes, the plurality of crushing rings are sequentially connected in series by the tension ropes, and when the first crushing roller and the second crushing roller extrude small hard block raw materials, part of the crushing rings can slide along the radial direction of the driving roller and extrude the rubber sleeve, so that local avoidance is formed on the small hard block raw materials, and the crushing effect of the cement raw materials is ensured.

Description

Crushing device for raw materials for cement production

Technical Field

The invention relates to the technical field of crushing equipment, in particular to a crushing device for raw materials for cement production.

Background

Cement is a foundation stone of modern buildings and is widely applied to the construction of infrastructures such as houses, bridges, roads and the like. Cement production requires various raw materials such as limestone, clay, iron ore or hematite, etc., which are crushed during the cement production process.

A roller crusher is disclosed as in publication No. CN115463708B, comprising a first crushing roller and a second crushing roller arranged axially parallel to each other, the first crushing roller being supported in a bearing housing, the second crushing roller being supported in a movable bearing housing. When encountering hard lump raw materials, the second crushing roller can deflect or displace to avoid the hard lump raw materials, so that the position between the second crushing roller and the first crushing roller, which is not contacted with the hard lump raw materials, is easy to leak materials, and the crushing effect of the cement raw materials is further deteriorated.

Disclosure of Invention

Accordingly, it is necessary to provide a crushing apparatus for raw materials for cement production, aiming at the technical problem that the crushing effect of the conventional hard lump raw materials is poor.

The above purpose is achieved by the following technical scheme:

The crushing device for the raw materials for cement production comprises a crushing box, wherein a first crushing roller and a second crushing roller which synchronously and reversely rotate are arranged in the crushing box, the first crushing roller and the second crushing roller are identical in structure, each of the first crushing roller and the second crushing roller comprises a driving roller, a fixing sleeve, a rubber sleeve and crushing rings which are coaxially arranged from inside to outside in sequence, the crushing rings are provided with a plurality of crushing rings which are uniformly distributed along the axial direction of the rubber sleeve, a plurality of tension ropes are arranged on the fixing sleeve, the plurality of crushing rings are sequentially connected in series by the tension ropes, and when the first crushing roller and the second crushing roller extrude small hard lump raw materials, part of the crushing rings can slide along the radial direction of the driving roller and extrude the rubber sleeve.

Further, the sizes of the crushing rings are consistent, a plurality of perforations are arranged in the circumferential direction of each crushing ring, the distances between the perforations and the axes of the crushing rings are equal, the distances between the perforations on two adjacent crushing rings and the axes of the crushing rings are different, the perforations are used for the tension ropes to pass through, and the tension ropes are wavy in the perforations of the crushing rings.

The tension rope comprises a first end and a second end, the first end of the tension rope is connected with the first fixed sleeve, an adjusting component is arranged on the second fixed sleeve, the second end of the tension rope is connected with the adjusting component, and the adjusting component can adjust the tensioning degree of the tension rope.

Further, the adjusting part comprises a plurality of thread barrels and a plurality of installing rings, the thread barrels are fixedly arranged on one side, away from the crushing ring, of the second fixing sleeve, the installing rings are located on one side, away from the crushing ring, of the thread barrels, the second ends of the tension ropes penetrate through the thread barrels to be connected with the installing rings respectively, the installing rings are rotationally connected with rotating drums, the rotating drums are in threaded fit with the thread barrels, and the distance between the thread barrels and the installing rings can be adjusted through rotating the rotating drums, so that the tensioning degree of each tension rope is adjusted.

Further, a first baffle ring is coaxially arranged at one end, far away from the second fixed sleeve, of the first fixed sleeve, a second baffle ring is coaxially arranged at one end, far away from the first fixed sleeve, of the second fixed sleeve, a plurality of crushing rings are located between the first baffle ring and the second baffle ring, a fixed ring is arranged at one side, far away from the crushing rings, of the first baffle ring, the fixed ring and the crushing rings are coaxially arranged, a plurality of first through holes are formed in the first baffle ring, first ends of a plurality of tension ropes penetrate through the first through holes to be connected with the fixed ring, a plurality of second through holes are formed in the second baffle ring, and second ends of the plurality of tension ropes penetrate through the second through holes to be connected with corresponding mounting rings.

Further, be equipped with two at least spacer rings between the broken ring, spacer ring and broken ring coaxial setting, and all be equipped with the third through-hole on every spacer ring, tension rope can follow the third through-hole and slide, and two at least spacer rings pass through connection steel ring fixed connection, connection steel ring is located the inside of rubber sleeve, the spacer ring passes the rubber sleeve and is connected with connection steel ring.

Further, the first fixing sleeve is provided with a first step, the second fixing sleeve is provided with a second step, the first step and the second step are oppositely arranged to form an annular groove, and the connecting steel ring is located in the annular groove.

Further, a first inclined plane is arranged on the end face of the first fixed sleeve, a second inclined plane is arranged on the end face of the second fixed sleeve, and the first inclined plane and the second inclined plane are oppositely arranged and are in sliding fit.

Further, a telescopic mechanism is further arranged on the crushing box, and the telescopic mechanism can enable the first crushing roller and the second crushing roller to keep a set distance.

Further, the crushing device also comprises a power system, wherein the power system comprises a first motor and a second motor, the first crushing roller is in transmission connection with the first motor through a universal joint, and the second crushing roller is in transmission connection with the second motor through another universal joint.

The beneficial effects of the invention are as follows:

According to the crushing device for the raw materials for cement production, firstly, when the first crushing roller and the second crushing roller extrude the cement raw materials, if the small hard block raw materials are extruded, the part of the crushing ring contacted with the small hard block raw materials slides along the radial direction of the driving roller and extrudes the rubber sleeve, so that the part of the crushing ring locally avoids the small hard block raw materials, and therefore the first crushing roller or the second crushing roller does not need to deviate, the distance between the first crushing roller and the second crushing roller can be prevented from being increased, and the crushing effect of the cement raw materials is ensured.

Secondly, because the materials are generally concentrated at the middle position between the first crushing roller and the second crushing roller, the abrasion loss of the middle positions of the first crushing roller and the second crushing roller is large so as to generate a dent, the extrusion force of the two end positions of the first crushing roller and the second crushing roller is easily larger than that of the middle positions, the extrusion of the first crushing roller and the second crushing roller on the materials is uneven, and the two ends of the tension rope are pressed at the moment to automatically tension the middle part of the tension rope, so that the crushing rings positioned at the middle positions of the first crushing roller and the second crushing roller are displaced, and the dent generated by the middle abrasion of the first crushing roller and the second crushing roller is compensated, so that the crushing of the cement raw materials by the first crushing roller and the second crushing roller is more even.

Drawings

Fig. 1 is a schematic perspective view of a crushing device for cement production raw materials according to an embodiment of the present invention;

Fig. 2 is a schematic perspective view of a second crushing roller in a crushing device for cement production raw materials according to an embodiment of the present invention;

FIG. 3 is a side view of a second crushing roller in a crushing apparatus for cement manufacturing raw materials according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is an enlarged view of the structure at B in FIG. 4;

FIG. 6 is an enlarged view of the structure at C in FIG. 4;

fig. 7 is an exploded view showing a part of the structure of a second crushing roller in a crushing apparatus for cement production raw materials according to an embodiment of the present invention.

Wherein:

100. The device comprises a crushing box, 101, an air cylinder, 102, an air storage tank, 200, a first crushing roller, 300, a second crushing roller, 301, a driving shaft, 302, a shaft body, 303, a first fixing sleeve, 3031, a first universal joint, 304, a second fixing sleeve, 3041, a second baffle ring, 305, a crushing ring, 306, a tension rope, 307, a rubber sleeve, 308, a gasket, 309, a separation ring, 310, a fixing ring, 311, a threaded cylinder, 312, a mounting ring, 313, a rotating cylinder, 314, a fixed shaft, 315, a connecting steel ring, 400, a first motor, 500, a first universal joint, 600, a second motor, 700 and a second universal joint.

Detailed Description

The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

As shown in fig. 1 to 7, the crushing device for cement production raw materials provided by an embodiment of the invention comprises a crushing box 100, wherein a first crushing roller 200 and a second crushing roller 300 which synchronously and reversely rotate are arranged in the crushing box 100, the first crushing roller 200 and the second crushing roller 300 have the same structure, each of the first crushing roller 200 and the second crushing roller 300 comprises a driving roller, a fixed sleeve, a rubber sleeve 307 and a crushing ring 305 which are coaxially arranged from inside to outside in sequence, the crushing rings 305 are provided with a plurality of crushing rings 305, the crushing rings 305 are uniformly distributed along the axial direction of the rubber sleeve 307, the fixed sleeve is provided with a plurality of tension ropes 306, the plurality of crushing rings 305 are sequentially connected in series by the tension ropes 306, and when the first crushing roller 200 and the second crushing roller 300 squeeze small hard block raw materials, part of the crushing rings 305 can slide along the radial direction of the driving roller and squeeze the rubber sleeve 307.

The tension cord 306 ensures that the plurality of crushing rings 305 do not become detached from the retaining sleeve. The small hard block raw material is a hard block raw material with smaller diameter in the cement raw material.

The driving roller comprises a driving shaft 301 and shaft bodies 302, the shaft bodies 302 are respectively located at two sides of the driving shaft 301, the driving shaft 301 is fixedly connected with the shaft bodies 302, the fixing sleeve is sleeved on the two shaft bodies 302, and the two shaft bodies 302 are respectively connected with the crushing box 100 in a rotating mode through bearings. The crushing rings 305 are in friction fit with the rubber sleeves 307, the rubber sleeves 307 are in friction fit with the fixed sleeves, and thus the rotation of the driving shaft 301 drives the shaft body 302 to rotate synchronously, and the shaft body 302 drives the fixed sleeves and the rubber sleeves 307 to rotate synchronously, so that the crushing rings 305 are driven to rotate synchronously.

In the process of extruding the cement raw materials by the first crushing roller 200 and the second crushing roller 300, if the small hard lump raw materials are extruded, the part of the crushing ring 305 contacted with the small hard lump raw materials slides along the radial direction of the driving roller and extrudes the rubber sleeve 307, so that the part of the crushing ring 305 forms local avoidance on the small hard lump raw materials, and the first crushing roller 200 or the second crushing roller 300 does not need to deviate, so that the distance between the first crushing roller 200 and the second crushing roller 300 can be prevented from being increased, and the crushing effect of the cement raw materials is ensured.

Further, the crushing rings 305 have uniform sizes, a plurality of perforations are arranged in the circumferential direction of each crushing ring 305, the distances between the perforations and the axes of the crushing rings 305 are equal, the distances between the perforations on two adjacent crushing rings 305 and the axes of the crushing rings 305 are different, the perforations are used for the tension ropes 306 to pass through, and the tension ropes 306 are wavy in the perforations of the crushing rings 305.

Since the materials are generally concentrated at the middle position between the first crushing roller 200 and the second crushing roller 300, the abrasion amount of the middle positions of the first crushing roller 200 and the second crushing roller 300 is large so as to generate a dent, the extrusion force of the two end positions of the first crushing roller 200 and the second crushing roller 300 is easily larger than that of the middle positions, the extrusion of the first crushing roller 200 and the second crushing roller 300 on the materials is uneven, at the moment, the two ends of the tension rope 306 are pressed by the pressure energy to tension the middle part of the tension rope 306, and then the crushing rings 305 positioned at the middle positions of the first crushing roller 200 and the second crushing roller 300 are all displaced in the direction away from the driving roller, so that the dent amount generated by the abrasion of the middle parts of the first crushing roller 200 and the second crushing roller 300 is compensated, and the crushing of the cement raw materials by the first crushing roller 200 and the second crushing roller 300 is more even.

Further, the fixing sleeve comprises a first fixing sleeve 303 and a second fixing sleeve 304 which are coaxial and sequentially arranged along the axial direction of the driving roller, the first fixing sleeve 303 is detachably connected with the second fixing sleeve 304, the tension rope 306 is provided with a first end and a second end, the first end of the tension rope 306 is connected with the first fixing sleeve 303, an adjusting component is arranged on the second fixing sleeve 304, the second end of the tension rope 306 is connected with the adjusting component, and the tensioning degree of the tension rope 306 can be adjusted by the adjusting component.

As shown in fig. 3 to 5, the adjusting assembly comprises a plurality of screw barrels 311 and a plurality of mounting rings 312, the screw barrels 311 are fixedly arranged on one side of the second fixing sleeve 304 away from the crushing ring 305, the mounting rings 312 are positioned on one side of the screw barrels 311 away from the crushing ring 305, the second ends of the tension ropes 306 respectively penetrate through one screw barrel 311 to be connected with one mounting ring 312, the mounting rings 312 are rotatably connected with a rotary barrel 313, the rotary barrel 313 is in threaded fit with the screw barrels 311, and the distance between the screw barrels 311 and the mounting rings 312 can be adjusted by rotating the rotary barrel 313, so that the tensioning degree of the tension ropes 306 can be adjusted. The fixing shaft 314 is disposed in the mounting ring 312, and the second end of the tension rope 306 is fixedly connected to the fixing shaft 314. The tension degree of the tension rope 306 is adjusted by rotating the rotary drum 313, so that the operation is convenient, and meanwhile, the situation that the tension rope 306 is too loose to drive the crushing ring 305 to move can be avoided.

As shown in fig. 7, a first blocking ring 3031 is coaxially disposed at one end of the first fixing sleeve 303 far from the second fixing sleeve 304, a second blocking ring 3041 is coaxially disposed at one end of the second fixing sleeve 304 far from the first fixing sleeve 303, a plurality of crushing rings 305 are located between the first blocking ring 3031 and the second blocking ring 3041, a fixing ring 310 is disposed at one side of the first blocking ring 3031 far from the crushing rings 305, the fixing ring 310 and the crushing rings 305 are coaxially disposed, a plurality of first through holes are disposed on the first blocking ring 3031, first ends of a plurality of tension ropes 306 penetrate through the first through holes to be connected with the fixing ring 310, a plurality of second through holes are disposed on the second blocking ring 3041, and second ends of the plurality of tension ropes 306 penetrate through the second through holes to be connected with respective corresponding mounting rings 312. The first blocking ring 3031 is provided with a spacer 308 at a position corresponding to the first through hole, and when the tension rope 306 is tensioned, the spacer 308 can be in blocking fit with the fixed ring 310, so as to avoid the fixed ring 310 from damaging the first fixed sleeve 303 due to impact.

Further, at least two separating rings 309 are arranged between the crushing rings 305, the separating rings 309 and the crushing rings 305 are coaxially arranged, each separating ring 309 is provided with a third through hole, the tension rope 306 can slide along the third through holes, at least two separating rings 309 are fixedly connected through a connecting steel ring 315, and the connecting steel ring 315 is positioned in the rubber sleeve 307. The spacer ring 309 is connected to the connecting steel ring 315 through the rubber jacket 307.

The spacer rings 309 serve to divide the plurality of crushing rings 305 into a plurality of regions, thereby avoiding interaction between the crushing rings 305 in adjacent regions. In the present embodiment, two dividing rings 309 are provided, and the two dividing rings 309 can divide the plurality of crushing rings 305 into three regions, the middle region corresponding to the middle position of the first crushing roller 200 and the second crushing roller 300 where the abrasion recess is easily generated. In other embodiments, the spacer ring 309 may be provided in three, four, etc. The first through hole, the second through hole and the third through hole are all in flaring shapes, so that the tension rope 306 can be prevented from being worn.

Further, the first fixing sleeve 303 is provided with a first step, the second fixing sleeve 304 is provided with a second step, the first step and the second step are arranged opposite to each other to form a ring groove, and the connecting steel ring 315 is located in the ring groove. So that the connecting steel ring 315 does not move in the axial direction of the crushing ring 305, ensuring the position of the spacer ring 309.

Further, a first inclined plane is disposed on the end face of the first fixing sleeve 303, and a second inclined plane is disposed on the end face of the second fixing sleeve 304, and the first inclined plane and the second inclined plane are disposed opposite to each other and are in sliding fit. Thus, the first fixing sleeve 303 and the second fixing sleeve 304 are convenient to assemble and disassemble, and are not easy to separate from each other.

Further, the crushing box 100 is further provided with a telescopic mechanism, and the telescopic mechanism can maintain a set distance between the first crushing roller 200 and the second crushing roller 300. The telescopic mechanism comprises a cylinder 101, the cylinder 101 is connected with a gas storage tank 102, compressed air is stored in the gas storage tank 102 and used for running of the cylinder 101, the gas storage tank 102 can balance pressure fluctuation of the cylinder 101 during working, the cylinder 101 can keep pushing force on the first crushing roller 200, and accordingly a set distance between the first crushing roller 200 and the second crushing roller 300 is kept, and the set distance is a distance required for crushing cement raw materials.

Further, the crushing device further comprises a power system, wherein the power system comprises a first motor 400 and a second motor 600, the first crushing roller 200 is in transmission connection with the first motor 400 through a first universal joint 500, and the second crushing roller 300 is in transmission connection with the second motor 600 through a second universal joint 700.

Thus, when the large hard lump raw materials are encountered between the first crushing roller 200 and the second crushing roller 300, the first crushing roller 200 and the second crushing roller 300 can move and rotate in the direction away from each other, so that an included angle is formed between the first crushing roller 200 and the second crushing roller 300, the large hard lump raw materials are avoided, and the damage to the first crushing roller 200 and the second crushing roller 300 is avoided.

In combination with the above embodiment, the use principle and working process of the embodiment of the present invention are as follows:

The tension of the tension ropes 306 is adjusted by rotating the drum 313 so that the plurality of crushing rings 305 remain coaxial. Then, the cement raw materials to be crushed are put into the crushing box 100, and then the first motor 400 and the second motor 600 are controlled to rotate, so that the first crushing roller 200 and the second crushing roller 300 synchronously and reversely rotate, and the cement raw materials are crushed. When encountering small hard lump materials, the crushing ring 305 slides along the radial direction of the driving roller and presses the rubber sleeve 307, so that avoidance of the small hard lump materials is realized.

After long-term use, the middle parts of the first crushing roller 200 and the second crushing roller 300 can be sunken, at the moment, the two ends of the tension rope 306 are subjected to larger extrusion force, so that the middle parts of the tension rope 306 can be automatically tensioned, the crushing rings 305 positioned at the middle parts of the first crushing roller 200 and the second crushing roller 300 are both displaced in the direction away from the driving roller, and the sunken amount generated by the middle parts of the first crushing roller 200 and the second crushing roller 300 due to abrasion is further compensated, so that the crushing of the cement raw materials by the first crushing roller 200 and the second crushing roller 300 is more uniform.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.

Claims (10)

1. The crushing device for the raw materials for cement production is characterized by comprising a crushing box, wherein a first crushing roller and a second crushing roller which synchronously rotate in opposite directions are arranged in the crushing box, and the first crushing roller and the second crushing roller have the same structure;

The first crushing roller and the second crushing roller comprise a driving roller, a fixed sleeve, a rubber sleeve and crushing rings which are coaxially arranged in sequence from inside to outside, the crushing rings are arranged in a plurality, the crushing rings are uniformly distributed along the axial direction of the rubber sleeve, a plurality of tension ropes are arranged on the fixed sleeve, the plurality of crushing rings are sequentially connected in series by the tension ropes, and when the first crushing roller and the second crushing roller extrude small hard lump raw materials, part of the crushing rings can slide along the radial direction of the driving roller and extrude the rubber sleeve.

2. The crushing device for cement raw materials according to claim 1, wherein the plurality of crushing rings are uniform in size, a plurality of perforations are formed in the circumferential direction of each crushing ring, the distances between the perforations and the axes of the crushing rings are equal, the distances between the perforations on two adjacent crushing rings and the axes of the crushing rings are different, the perforations are used for allowing tension ropes to pass through, and the tension ropes are wavy in the perforations of the plurality of crushing rings.

3. The crushing device for raw materials for cement production according to claim 2, wherein the fixed sleeve comprises a first fixed sleeve and a second fixed sleeve which are coaxial and are sequentially arranged along the axial direction of the driving roller, the first fixed sleeve is detachably connected with the second fixed sleeve, the tension rope is provided with a first end and a second end, the first end of the tension rope is connected with the first fixed sleeve, the second fixed sleeve is provided with an adjusting component, the second end of the tension rope is connected with the adjusting component, and the tensioning degree of the tension rope can be adjusted by the adjusting component.

4. A crushing device for cement production raw materials according to claim 3, wherein the adjusting assembly comprises a plurality of screw barrels and a plurality of mounting rings, the screw barrels are fixedly arranged on one side of the second fixing sleeve away from the crushing rings, the mounting rings are arranged on one side of the screw barrels away from the crushing rings, the second ends of the tension ropes respectively penetrate through one screw barrel to be connected with one mounting ring, the mounting rings are rotatably connected with rotating drums, the rotating drums are in threaded fit with the screw barrels, and the distance between the screw barrels and the mounting rings can be adjusted by rotating the rotating drums, so that the tensioning degree of each tension rope can be adjusted.

5. The crushing device for raw materials for cement production according to claim 4, wherein a first baffle ring is coaxially arranged at one end of the first fixed sleeve, which is far away from the second fixed sleeve, a second baffle ring is coaxially arranged at one end of the second fixed sleeve, which is far away from the first fixed sleeve, a plurality of crushing rings are positioned between the first baffle ring and the second baffle ring, a fixed ring is arranged at one side of the first baffle ring, which is far away from the crushing rings, the fixed ring is coaxially arranged with the crushing rings, a plurality of first through holes are formed in the first baffle ring, the first ends of a plurality of tension ropes penetrate through the first through holes to be connected with the fixed rings, a plurality of second through holes are formed in the second baffle ring, and the second ends of the plurality of tension ropes penetrate through the second through holes to be connected with respective corresponding mounting rings.

6. The crushing device for cement production raw materials according to claim 4, wherein at least two separating rings are arranged between the crushing rings, the separating rings are coaxially arranged with the crushing rings, each separating ring is provided with a third through hole, the tension rope can slide along the third through hole, the at least two separating rings are fixedly connected through a connecting steel ring, the connecting steel ring is positioned in the rubber sleeve, and the separating rings penetrate through the rubber sleeve and are connected with the connecting steel ring.

7. The crushing device for cement production raw materials according to claim 6, wherein the first fixing sleeve is provided with a first step, the second fixing sleeve is provided with a second step, the first step and the second step are arranged opposite to each other to form an annular groove, and the connecting steel ring is positioned in the annular groove.

8. A crushing device for cement production raw materials according to claim 3, wherein a first inclined surface is arranged on the end surface of the first fixing sleeve, a second inclined surface is arranged on the end surface of the second fixing sleeve, and the first inclined surface and the second inclined surface are oppositely arranged and are in sliding fit.

9. The apparatus according to claim 1, wherein the crushing box is further provided with a telescopic mechanism which enables a predetermined distance between the first crushing roller and the second crushing roller.

10. The apparatus for crushing cement raw materials according to claim 1, further comprising a power system, wherein the power system comprises a first motor and a second motor, the first crushing roller is in transmission connection with the first motor through one universal joint, and the second crushing roller is in transmission connection with the second motor through the other universal joint.