CN114367358A - Roller grinding component and roller grinding machine with same - Google Patents

Abstract

The invention provides a roller grinding component and a roller grinding machine with the same, relates to the technical field of crushing equipment, and mainly aims to solve the problems that the existing hammer type crushing equipment is low in working efficiency, cannot continuously operate and is easy to damage. The roller grinding component comprises a grinding disc body and a grinding roller assembly, wherein the upper surface of the grinding disc body is of an inclined surface structure with a concave middle part, and the grinding roller assembly is positioned on the upper surface of the grinding disc body and can rotate by taking the axis of the grinding disc body as an axis; the rolling cavity is formed between the rolling disc body and the rolling roller assembly and is a gap with a large upper part and a small lower part; when the roller assembly rotates, the materials falling into the rolling cavity from the upper part of the rolling disc body are rolled and crushed and discharged from the lower end of the rolling cavity. The invention also provides a roller mill, which comprises the roller mill component and a box body positioned below the milling disc body, wherein the box body is communicated with the milling cavity.

Description

Roller grinding component and roller grinding machine with same

Technical Field

The invention relates to the technical field of crushing equipment, in particular to a roller grinding component and a roller grinding machine with the same.

Background

In industries such as building material production, mining and mineral processing, raw materials for processing need to be crushed. Crushing plants for medium coarse crushing (> 10mm) have become mature, while crushers for smaller crushing ranges have presented more problems.

The existing commonly used fine crushing crushers for products comprise hammer crushers, impact crushers, counterattack crushers and the like, the crushers adopt a mode of striking and crushing materials by using high-speed rotating hammers, and due to the high-speed impact between the hammers and the materials, the hammers are seriously abraded, the hammers need to be replaced in 3-5 days, the material consumption is high, the maintenance amount is large, and the operation rate is low.

In order to solve this problem, it is necessary to develop a crushing plant which has high operation efficiency, can be continuously operated, and is easy to maintain.

Disclosure of Invention

The invention aims to provide a roller grinding component and a roller grinding machine with the same, and aims to solve the technical problems that a crusher in the prior art is inconvenient to use and serious in loss. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a roller grinding component, which comprises a grinding disc body and a grinding roller assembly, wherein the upper surface of the grinding disc body is of an inclined surface structure with a concave middle part, and the grinding roller assembly is positioned on the upper surface of the grinding disc body and can rotate by taking the axis of the grinding disc body as an axis; the rolling cavity is formed between the rolling disc body and the rolling roller assembly and is a gap with a large upper part and a small lower part; when the roller assembly rotates, the material falling into the rolling cavity above the rolling disc body is rolled and crushed and discharged from the lower end of the rolling cavity.

The grinding disc body and the grinding roller assembly are combined to form a grinding cavity which is obliquely arranged and has a large upper part and a small lower part, the falling speed of the material falling into the grinding cavity is reduced, and the material can be gradually ground and crushed into smaller particles along with the rotation of the grinding roller assembly; in addition, because the grinding disc body is of a structure with a sunken middle part, the grinding disc body and the grinding roller assembly not only can be ground under relatively low pressure, abrasion is reduced, meanwhile, extrusion forces on two sides of the equipment can be mutually offset, and then vibration possibly generated when the equipment is used is effectively reduced, and the service life of the equipment is prolonged.

On the basis of the technical scheme, the invention can be further improved as follows.

As a further improvement of the invention, a milling disc seat connected through screw threads is arranged below the milling disc body, the milling disc seat is of a hollow structure, an internal thread is arranged on the inner side wall of the milling disc seat, and the milling disc body can rotate relative to the milling disc seat along the internal thread so as to move up and down relative to the milling disc seat to adjust the width of the gap; the milling chamber is formed between the milling disc body and the milling roller assembly.

The relative position can carry out the grinding disk seat of adjusting from top to bottom and grind the mode that the position between the two was adjusted to the dish body accessible when using and ensure that the size that is used for constituting the gap of rolling the chamber is unchangeable, and then guarantees that broken efficiency can not reduce, improve equipment's life, the change cycle of the corresponding consumptive material of extension. In addition, the structure can also effectively enlarge the application range of the roller mill, so that the roller mill can be used for processing various materials with different particle size ranges.

As a further development of the invention, the apparatus further comprises height adjustment means which are connected to the mill body and which drive the mill body in rotation relative to the mill housing to vary the height of the mill body.

This structural design helps the apparatus to help drive the mill body up and down according to the size of the material to be crushed and its physical properties (e.g. hardness, friability, etc.), fineness of crushing requirements and yield requirements, etc., thereby achieving height adjustment between the mill body and the mill seat.

As a further improvement of the invention, a conical grinding plate is fixedly arranged on the upper surface of the grinding plate body and is detachably connected with the grinding plate body.

This toper grinds dish can change as the change consumptive material, not only facilitates the use, simultaneously with can help reducing the processing cost of equipment.

As a further improvement of the invention, the roller assembly comprises a roller seat body and a plurality of roller units, wherein the axis of the roller seat body is arranged along the vertical line direction, the outer peripheral side of the roller seat body extends outwards to form a fixing part, the roller units are uniformly distributed around the outer periphery of the roller seat body, and any roller unit is obliquely arranged relative to the roller seat body from bottom to top; when the roller seat body is driven to rotate by the driving component, the roller unit rotates along with the roller seat body.

The roller units can rotate around the axis of the roller base body as a shaft under the driving of the roller base body and the driving assembly in transmission connection with the roller base body, so that the roller units can interact with the rolling disc and the conical rolling disc simultaneously to treat materials, and the processing efficiency is improved.

As a further improvement of the invention, the roller unit comprises a roller shaft and a roller, and the roller is sleeved outside the roller shaft through a bearing.

When the roller rotates, the roller rotates around the roller shaft, and the periphery of the roller is uniformly abraded, so that the service life of the roller is prolonged.

As a further improvement of the invention, the upper end of the roller seat body is provided with a guide cone, the periphery of the guide cone extends outwards to form a conical structure, the outer edge of the guide cone is positioned above the rolling cavity, and the material falling above the guide cone can fall into the rolling cavity along the upper surface of the guide cone.

The structure of guide cone not only can be used for guiding the falling direction and the falling position of the material, but also can effectively prevent the material from falling into the roller seat body. Once the material falls onto the roller housing, normal use of the roller housing may be affected.

The invention also provides a roller mill which comprises the roller milling component and a box body positioned below the milling disc body, wherein the box body is communicated with the milling cavity, and materials crushed by the milling cavity can fall into the box body.

As a further improvement of the invention, an overload prevention assembly is further arranged on the grinding disc body, the overload prevention assembly comprises an elastic part, a sliding block and an involute flange, the involute flange is fixedly connected with the grinding disc body, a plurality of involutes are uniformly arranged on the outer peripheral side of the involute flange, and the junction of two adjacent involutes is an inclined plane; the sliding block is pushed by the elastic piece to abut against the inclined surface of the involute flange; when the roller mill transships, the rolling base can be followed the roller subassembly rotates with the increase gap width, with rolling base fixed connection the flange that gradually bursts at seams rotates in step and promotes the extrusion of slider radial movement the elastic component.

When the roller mill is overloaded, the resistance between the rolling disc body and the rolling disc assembly exceeds the driving force provided by the driving assembly, the rolling disc body rotates along with the rolling roller assembly, the involute flange fixedly connected with the rolling disc body also rotates along with the involute flange, and the sliding block positioned on the corresponding position can be pushed to move and extrude the elastic element; simultaneously, roll the dish physical stamina and move downwards for rolling the dish subassembly along corresponding screw thread along rotating to make roll the disk body and roll the chamber grow that rolls between the roller subassembly, thereby the help reduces the resistance between the two, reach and prevent that equipment from transshipping, effective protection equipment makes it can work in safety range all the time, avoids equipment to damage the purpose of shutting down because of transshipping.

As a further improvement of the invention, the included angle formed by the straight lines of the tangents at the two ends of the involute is 40-50 degrees.

Compared with the prior art, the roller mill provided by the preferred embodiment of the invention not only can continuously run for a long time without stopping, but also has high crushing efficiency compared with the traditional crushing equipment. The equipment wear rate is low, the consumptive material change number of times is few, the cost that produces when can effectively reducing equipment uses. In addition, compared with other crushers, the whole crusher is of a symmetrical structure, so that the eccentric wear problem of the traditional crusher is effectively avoided; simultaneously because the slope of grinding chamber is arranged, treat that broken material from top to bottom slopes to flow, consequently this equipment can high-speed rotation with traditional equipment compare, and a plurality of rolls of arranging of encircleing also can further improve grinding efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a roll milling element according to the present invention;

FIG. 2 is a schematic view of the mounting structure of the upper cover of the roll milling element of the present invention;

FIG. 3 is a schematic diagram of the structure of the compression cone of FIG. 2;

FIG. 4 is a schematic view showing the structure of a guide cone in the roll grinding member according to the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;

FIG. 6 is a schematic cross-sectional view of the roll mill of the present invention;

FIG. 7 is a schematic view of the overload prevention assembly of the roll mill of the present invention;

figure 8 is a front view of the involute flange of figure 7.

In the figure: 1. rolling the disc body; 11. a disc grinding seat; 12. conical grinding disc; 13. a height adjustment device; 131. a drive motor; 132. an output gear; 2. a roller assembly; 21. a roller base body; 211. a fixing member; 212. an upper cover; 213. compressing the taper sleeve; 214. a locking sleeve; 22. a roller unit; 221. grinding the roll shaft; 222. rolling; 23. a material guide cone; 3. a rolling cavity; 4. a box body; 41. a discharge port; 5. an overload prevention assembly; 51. an elastic member; 52. a slider; 53. an involute flange; 531. an involute; 532. a bevel; 6. a drive assembly; 61. a main motor; 62. a belt; 63. a main shaft; 7. a top cover; 71. and (4) feeding a material inlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.

The invention provides a roller milling component, as shown in figure 1, the roller milling component mainly comprises a milling disc body 1 and a milling roller assembly 2, wherein the upper surface of the milling disc body 1 is of an inclined plane structure with a concave middle part, and the milling roller assembly 2 is positioned on the upper surface of the milling disc body 1 and can rotate by taking the axis of the milling disc body 1 as an axis; the rolling cavity 3 is formed between the rolling disc body 1 and the rolling roller assembly 2 and has a gap with a big top and a small bottom; when the roller assembly 2 rotates, the materials falling into the rolling cavity 3 through the upper part of the rolling disc body 1 are rolled and crushed and discharged from the lower end of the rolling cavity 3.

The grinding disc body 1 and the grinding roller assembly 2 are combined to form a gap-shaped grinding cavity 3 which is obliquely arranged and has a large upper part and a small lower part, the falling speed of the material falling into the grinding cavity 3 is reduced, and the material is gradually ground and crushed into smaller particles along with the rotation of the grinding roller assembly 2; in addition, because the grinding disc body 1 is the structure that the middle part is sunken, the grinding disc body 1 and the grinding roller assembly 2 not only can grind under relatively low pressure, reduce wear, and the extrusion force of equipment both sides can offset each other simultaneously, and then effectively reduces the vibrations that equipment probably produced when using, improve equipment's life.

It should be noted that the upper surface of the above-mentioned grinding table body 1 is of a symmetrical structure.

In order to make the rolling chamber 3 normally usable, there is a certain difference between the inclination angle of the upper surface of the rolling disc body 1 and the inclination angle of the outer peripheral side of the roller assembly 2 and the difference can be used to form a gap-shaped structure of the rolling chamber 3, which is wide at the top and narrow at the bottom, and the structure is similar to a V-shape.

During normal use, the grinding disc body 1 keeps fixed, and the roller subassembly 2 is rotated by drive assembly 6's drive to the realization is to falling into the crushing of grinding of the material in grinding chamber 3, and the particle diameter is less than and breaks away from grinding chamber 3 through the open-ended material of 3 lower extremes in grinding chamber after crushing treatment.

In order to facilitate the normal use of the device, a rolling base 11 capable of supporting to a certain extent is arranged below the rolling disc body 1, the rolling base 11 is of a hollow structure, an internal thread is arranged on the inner side wall of the rolling base, and an external thread matched with the internal thread is arranged on the outer side wall of the rolling disc body 1. When the milling disc body 1 is used, the milling disc body 1 can rotate relative to the milling disc seat 11 along the internal threads so as to move up and down relative to the milling disc seat 11, and the width of the milling cavity 3 which is in a gap-shaped structure with a wide upper part and a narrow lower part changes along with the up-and-down movement of the milling disc body 1.

Because corresponding subassembly can become thin because of wearing and tearing in the grinding, and then lead to the 3 width grow in chamber of grinding, in order to solve this problem, set up and grind the disk body 1 and can adjust from top to bottom for grinding disk seat 11, the relative position can carry out the mode that the position between the two was adjusted to the grinding disk seat 11 and the grinding disk body 1 accessible when using and ensure that the size that is used for constituting the gap in chamber of grinding 3 is unchangeable, and then guarantee that broken efficiency can not reduce, improve equipment's life, the replacement cycle of the corresponding consumptive material of extension. In addition, the structure can also effectively expand the application range of the roller mill, so that the roller mill can adjust the height difference between the mill body 1 and the mill seat 11 according to the size of the material to be crushed, physical properties (such as hardness, frangibility and the like), crushing fineness requirements, yield requirements and the like, and can be used for processing materials with different particle size ranges.

The structure of the milling disc seat 11 and the milling disc body 1 is as shown in fig. 1, at this time, the milling disc seat 11 is a hollow annular structure which is penetrated up and down, the milling disc body 1 is also a hollow annular structure, the cross section of one side of the milling disc body is an angle structure with a downward opening, and the contact surface of the two is connected by screw threads. Above-mentioned rolling base 11 passes through flange and bolt construction and lower box 4 fixed connection, and the material that obtains after rolling chamber 3 handles can fall into down in the box 4 through rolling base 11.

As an alternative embodiment, the exterior of the milling disc body 1 is also provided with a height adjustment device 13, which height adjustment device 13 is connected to the milling disc body 1 and drives the milling disc body 1 in rotation relative to the milling disc housing 11 to change the height of the milling disc body 1.

Specifically, the height adjusting device 13 includes a driving motor 131 and an output gear 132 structure located on an output shaft of the driving motor 131, and correspondingly, a gear ring structure engaged with the output gear 132 is also provided at a corresponding position on the outer peripheral side of the rolling mill body 1.

The mill disc body 1 and the mill roller assembly 2 wear out after a period of operation, resulting in an increased gap formed by the milling chamber 3 and a lower crushing efficiency. Because the grinding disc body 1 and the grinding disc seat 11 are connected through the threads, when the driving motor 131 drives the output gear 132 to rotate, the grinding disc body 1 can be driven to rotate circularly so as to adjust the axial vertical movement of the grinding disc body 1 relative to the grinding disc seat 11, so that the effect of adjusting the gap between the grinding disc body 1 and the grinding roller assembly 2 is achieved, and the crushing effect of the equipment is ensured not to be reduced due to abrasion.

Since the surface of the side of the body 1 in contact with the assembly of rollers 2 wears away with use. In order to facilitate replacement and reduce the consumable replacement cost of the equipment, as an optional embodiment, a conical rolling disc 12 is fixedly arranged on the upper surface of the rolling disc body 1, and the conical rolling disc 12 is detachably connected with the rolling disc body 1.

The conical mill 12 is constructed as shown in fig. 2, in which case the conical mill 12 is provided with openings at both its upper and lower ends, the upper end opening being larger than the lower end opening, the outer circumferential side wall of which can be fitted against the inner circumferential side wall of the mill body 1, and the inner circumferential side wall of which is arranged towards the mill roll assembly 2 for forming the milling chamber 3.

The conical rolling disc 12 can be replaced as a replacement consumable, is convenient to use, and can help to reduce the processing cost of equipment.

The structure of the roll assembly 2 is explained below:

the grinding roller assembly 2 comprises a roller seat body 21 and grinding roller units 22 uniformly fixed on the outer peripheral side of the roller seat body, the axis of the roller seat body 21 is arranged along the vertical line direction, the outer peripheral side of the roller seat body extends outwards to form a fixing part 211, the grinding roller units 22 are multiple, the grinding roller units 22 are uniformly distributed around the outer periphery of the roller seat body 21 at equal intervals through the fixing part 211, and any grinding roller unit 22 is obliquely arranged outwards from bottom to top relative to the roller seat body 21, as shown in fig. 1; when the roller housing 21 is driven by the driving assembly 6 to rotate, the roller unit 22 rotates accordingly.

The roller units 22 can rotate around the axis of the roller seat body 21 as an axis under the driving of the roller seat body 21 and the driving assembly 6 in transmission connection with the roller seat body 21, so that the roller units 22 interact with the roller body 1 or the conical roller 12 on the upper surface of the roller body 1 at the same time to treat materials, and the processing efficiency is improved.

In order to ensure the fixing firmness, the upper and lower ends of the roller unit 22 in the axial direction are fixedly connected with the roller seat 21. Wherein the fixing part 211 structure located at the upper end of the axis direction of the roller seat body 21 is different from the fixing part 211 structure at the lower end: the fixing part 211 at the lower end is integrally arranged with the roller seat body 21, and the fixing part 211 can be a flange structure with a pin hole; in addition, as shown in fig. 2, the upper end of the roller unit 22 is connected to the roller housing 21 through an upper cover 212, wherein the upper cover 212 is fixedly connected to the roller housing 21 through a pressing cone 213, and the roller unit 22 is fixed in a corresponding position through a locking sleeve 214. The number of the pressing taper sleeves 213 is two, and the two pressing taper sleeves are both in a semicircular structure, so that the two-way pressing effect is achieved, the locking of the upper cover 212 and the roller seat body 21 in the axial direction and the radial direction can be achieved, the structure is shown in fig. 3, and the two pressing taper sleeves 213 are symmetrically arranged in fig. 3 at the moment.

The locking sleeve 214 is bolted to the roll unit 22 to prevent it from moving up and down during use.

Specifically, the locking sleeve 214 is open, so that an inner and outer radial locking effect can be achieved.

As an alternative embodiment, the roller unit 22 includes a roller shaft 221 and a roller 222, and the roller 222 is sleeved outside the roller shaft 221 through a bearing, so that the roller 222 can rotate relative to the roller shaft 221 under the action of the bearing. In addition, a sealing cover is covered on the upper end of the roller 222 to prevent the material from entering the roller 222.

Because of the existence of the bearing, the roller 222 can rotate automatically under the action of the acting force generated by falling of the material and the resistance generated in the rolling process, so that the periphery of the roller 222 can be uniformly worn, and the service life of the roller is prolonged.

In addition, because the milling roller units 22 can make circular motion along with the rotation of the roller base 21, so as to mill the material falling into the milling cavity 3, and because the arc length between two adjacent milling rollers 222 is small (because the number of the milling rollers 222 is multiple and uniformly arranged), the material freely falls from the upper part of the conical milling disc 12 along the tapered inclined plane 532, so that the speed of the material is reduced, the large material is gradually milled into small particles in the process, on one hand, the vibration problem caused by the rapid change of power which may be generated when the large material passes through the roll gap is reduced, on the other hand, the uniformly arranged milling roller units 22 can help to offset the radial force generated between the main shaft 63 and the bearing, and meanwhile, a plurality of milling cycles can be formed every time the milling roller units 22 make one rotation, so as to effectively improve the crushing efficiency of the equipment.

This roller subassembly 2 rolls repeatedly many times at the during operation can be many same materials to make it become the tiny particle material by the large granule material, effectively avoided traditional equipment easy wearing and tearing, accessory to change frequent problem simultaneously, can also improve equipment's work efficiency through the mode that improves the rotational speed and increase roller unit 22 quantity simultaneously.

In order to prevent the material from directly falling into the interior of the milling roller assembly 2, as an alternative embodiment, the upper end of the roller seat body 21 is provided with a guide cone 23, as shown in fig. 4 and 5, the outer periphery of the guide cone 23 extends outwards and forms a conical structure, the outer edge of the guide cone 23 is located above the milling cavity 3, and the material falling above the guide cone 23 can fall into the milling cavity 3 along the upper surface of the guide cone 23.

Specifically, the upper surface of the guide cone 23 is a conical surface or a structure similar to a conical surface with a high middle part and a low periphery. The structure of the guide cone 23 can be used to guide the falling direction and the falling position of the material, and can also effectively prevent the material from falling onto the roller seat body 21. Once the material falls onto the roller housing 21, normal use of the roller housing 21 may be affected. The middle part of the guide cone 23 is connected with the main shaft 63.

The invention also provides a roller mill, as shown in fig. 6, which comprises the roller milling component and a box body 4 positioned below the roller milling component, wherein the box body 4 is communicated with the milling cavity 3.

In order to realize the collection of the materials, as an optional embodiment, a box body 4 connected with a rolling cavity 3 is fixedly arranged below the rolling disc body 1, and the materials crushed by the rolling cavity 3 can fall into the box body 4.

Specifically, the lower part of the box 4 is provided with a discharge port 41 for discharging the material.

It should be noted that the box 4 is hollow as a whole, and the space left by the middle of the box can be used for placing all or part of the driving assembly 6, so as to control the starting and stopping of the roller assembly 2.

In order to facilitate the operation of the roller grinding member, a main motor 61 is provided outside the box body 4, a main shaft 63 is provided inside the box body 4, both ends of the main shaft 63 are respectively connected with the roller grinding assembly 2 and a belt 62, and the belt 62 is communicated with the main shaft 63 and the main motor 61. When the main motor 61 is started, the main shaft 63 can rotate under the action of the belt 62 and drive the roller assembly 2 to synchronously rotate, so that the crushing function of the roller mill is realized.

In order to ensure that the device can be used safely, as an optional embodiment, an overload prevention assembly 5 is further arranged on the rolling disc body 1, the overload prevention assembly 5 comprises an elastic part 51, a sliding block 52 and an involute flange 53, as shown in fig. 7, the involute flange 53 is fixedly connected with the rolling disc body 1, a plurality of involute 531 are uniformly arranged on the outer peripheral side of the involute flange 53, and the junction of two adjacent involute 531 is an inclined plane 532 as shown in fig. 8; the slide block 52 is pushed by the elastic piece 51 to abut against the inclined surface 532 of the involute flange 53; when the roller mill is overloaded, the rolling disc body 1 can rotate along with the rolling roller assembly 2 to increase the gap width, and the involute flange 53 fixedly connected with the rolling disc body 1 synchronously rotates and pushes the sliding block 52 to radially move and extrude the elastic element 51. The grating body 1 can now move downwards relative to the grating disk seat 11.

It should be noted that the structure of the slider 52 is adapted to the structure of the surface where the oblique lines are located.

In an alternative embodiment, the included angle formed by the lines of the tangents of the ends of the involute 531 is 40-50 °.

Specifically, the elastic member 51 is a spring or a hydraulic rod.

When the rolling disc body 1 and the rolling roller assembly 2 are in normal operation, the sliding block 52 can effectively prevent the involute flange 53 from rotating under the action of the elastic element 51, and at the moment, the rolling disc body 1 and the conical rolling disc positioned on the inner side of the rolling disc body 1 are kept in a static state. When materials are increased suddenly and the resistance between the rolling rolls and the conical rolling disc 12 is increased suddenly to exceed the rated load of the driving assembly 6, the slide blocks 52 are pushed away radially by the inclined planes 532 which are arranged on the outer periphery of the involute flange 53 in equal parts, at the moment, the rolling disc body 1 can rotate along with the rolling roll unit, meanwhile, the rolling disc body 1 moves downwards relative to the rolling disc seat 11 under the action of threads, and at the moment, the distance between the rolling rolls and the conical rolling disc 12 is gradually increased; when the resistance between the rollers and the conical rolling disc 12 becomes small to a suitable level, the sliding blocks 52 can return to engage with the involute flanges 53 under the thrust of the elastic elements 51 (at this point the sliding blocks 52 continue to abut against the corresponding inclined surfaces 532), and the conical rolling disc 12 and the rolling disc body 1 also return to the rest condition. Subsequently, the height of the mill base 11 can be adjusted to a suitable state by the height adjusting device 13, so as to ensure that the distance between the conical mill 12 and the mill roller 222 is restored to the value in normal production, and the operation of the roller mill is continued.

The structure can be used for preventing equipment from overloading, effectively protecting the equipment, enabling the equipment to work in a safety range all the time, and avoiding the equipment from being damaged and shut down due to overload.

In addition, for the convenience of use, a top cover 7 with a feeding hole 71 is further fixed on the involute flange 53, and materials enter the equipment from top to bottom and are discharged from a box body 4 positioned below the roller body 1.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. The roller grinding component is characterized by comprising a grinding disc body (1) and a grinding roller assembly (2), wherein the upper surface of the grinding disc body (1) is of an inclined surface structure with a concave middle part, and the grinding roller assembly (2) is positioned on the upper surface of the grinding disc body (1) and can rotate by taking the axis of the grinding disc body (1) as an axis; the grinding cavity (3) is formed between the grinding disc body (1) and the grinding roller assembly (2) and has a gap with a large upper part and a small lower part;

when roller subassembly (2) rotate, the warp grind the disk body (1) top and fall into the material in grinding chamber (3) is ground the breakage and is followed grinding chamber (3) lower extreme is discharged.

2. A roller milling element according to claim 1, characterized in that below the milling disc body (1) there is provided a milling disc seat (11) connected by a screw thread, said milling disc seat (11) being of hollow construction and provided with an internal screw thread on its inner side wall, along which the milling disc body (1) can be turned in relation to the milling disc seat (11) to move up and down in relation to the milling disc seat (11) to adjust the width of the gap.

3. A roller milling element according to claim 2, characterised by further comprising height adjustment means (13), said height adjustment means (13) being associated with said milling disc body (1) and driving said milling disc body (1) in rotation with respect to said milling disc housing (11) to vary the height of said milling disc body (1).

4. A roller milling element according to claim 2, characterized in that the upper surface of the milling disc body (1) is fixedly provided with a conical milling disc (12), said conical milling disc (12) being detachably connected with the milling disc body (1).

5. A roller milling structure according to claim 1, characterized in that the milling roller assembly (2) comprises a roller base body (21) and milling roller units (22), the axis of the roller base body (21) is arranged along the vertical direction, the peripheral sides of the roller base body extend outwards to form fixing parts (211), the number of the milling roller units (22) is multiple, the milling roller units (22) are uniformly arranged around the periphery of the roller base body (21), and any milling roller unit (22) is arranged obliquely outwards relative to the roller base body (21) from bottom to top;

when the roller seat body (21) is driven to rotate by the driving component (6), the roller unit (22) rotates along with the roller seat body.

6. A roller milling arrangement according to claim 5, characterized in that the milling unit (22) comprises a milling roller shaft (221) and a milling roller (222), the milling roller (222) being journalled outside the milling roller shaft (221) by means of bearings.

7. A roller mill component according to claim 5, characterized in that the upper end of the roller holder body (21) is provided with a guide cone (23), the outer circumference of the guide cone (23) extends outwards and forms a conical structure, the outer edge of the guide cone (23) is located above the milling chamber (3), and the material falling above the guide cone (23) can fall into the milling chamber (3) along the upper surface of the guide cone (23).

8. A roller mill, characterized in that it comprises a roller milling element according to any one of claims 1 to 7 and a box (4) below the roller milling element, said box (4) being in communication with said milling chamber (3), the material milled by said milling chamber (3) being able to fall into said box (4).

9. A roller mill according to claim 8, characterized in that an overload prevention assembly (5) is further arranged on the mill disc body (1), the overload prevention assembly (5) comprises an elastic member (51), a sliding block (52) and an involute flange (53), the involute flange (53) is fixedly connected with the mill disc body (1), a plurality of involutes (531) are uniformly arranged on the outer peripheral side of the involute flange (53), and the junction of two adjacent involutes (531) is an inclined plane (532); the sliding block (52) is abutted with the inclined surface (532) of the involute flange (53) under the pushing of the elastic piece (51);

when the roll mill transships, roll disk body (1) can be followed roll roller subassembly (2) are rotated in order to increase the gap width, with roll disk body (1) fixed connection roll involute flange (53) synchronous revolution and promote slider (52) radial movement extrudees elastic component (51).

10. A roller mill according to claim 9, characterized in that the angle formed by the lines tangent to the ends of said involute (531) is between 40 ° and 50 °.

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