CN221016315U - Millstone assembly and rotary wheel mill - Google Patents

Abstract

The utility model belongs to the technical field of crushing equipment and discloses a grinding disc assembly and a rotary wheel mill, wherein the grinding disc assembly comprises a fixed grinding disc, a movable grinding disc and a transmission shaft, the fixed grinding disc and the movable grinding disc are coaxially arranged at intervals, one side of the fixed grinding disc facing the movable grinding disc is a first grinding surface, a center hole is formed in the center of the fixed grinding disc, one side of the movable grinding disc facing the fixed grinding disc is a second grinding surface, the transmission shaft is coaxially connected with one side of the movable grinding disc, which faces away from the fixed grinding disc, the first grinding surface and the second grinding surface are spherical surfaces in the same direction, and the curvature of the first grinding surface is larger than that of the second grinding surface. Above-mentioned mill subassembly and spiral wheel mill are through setting up first grinding surface and second grinding surface to the curved surface that the camber is different, can improve grinding efficiency and grinding quality, reduce the card machine risk.

Description

Millstone assembly and rotary wheel mill

Technical Field

The utility model relates to the technical field of crushing equipment, in particular to a millstone assembly and a rotary wheel mill.

Background

The rotary wheel mill is crushing equipment for processing particles or powder materials and is widely applied to the battery material preparation industry. The working principle is as follows: the bulk materials are pushed to a gap between a fixed millstone and a movable millstone of the rotary wheel mill by a pushing mechanism, and are ground and dispersed through relative friction movement of the fixed millstone, the movable millstone and the materials, so that the bulk materials are crushed and dissociated to reach the target particle size.

In the process, when the feeding amount is large and the gap between the grinding discs is small, residual impurity particles or caking in the raw materials cannot be timely ground, so that the situation that the materials are blocked and the grinding discs are blocked is easily caused, and shutdown cleaning is needed in time, so that the production efficiency is affected; in addition, the millstone structure mainly comprises two planes or conical surfaces which are parallel to each other, and flaky or long-strip-shaped products are easy to generate after materials are ground, so that the materials are not damaged thoroughly, and the product qualification rate is affected due to the fact that the particle size of the materials does not reach the standard.

Disclosure of utility model

The utility model aims to provide a millstone assembly, which can reduce the risk of clamping materials, reduce the generation of flaky or long-strip-shaped materials in the crushing process and improve the crushing quality of the materials.

To achieve the purpose, the utility model adopts the following technical scheme:

The grinding disc assembly comprises a fixed grinding disc, a movable grinding disc and a transmission shaft, wherein the fixed grinding disc and the movable grinding disc are coaxially arranged at intervals to form a grinding space between the fixed grinding disc and the movable grinding disc, one side of the fixed grinding disc faces the first grinding surface, a center hole is formed in the center of the fixed grinding disc, one side of the movable grinding disc faces the fixed grinding disc is the second grinding surface, the transmission shaft is in back of the movable grinding disc and is coaxially connected with one side of the fixed grinding disc, the first grinding surface and the second grinding surface are spherical surfaces in the same direction, and the curvature of the first grinding surface is larger than that of the second grinding surface.

Preferably, the first polishing surface is provided with a guide groove, and the plurality of guide grooves are disposed in a scattering manner around the center hole on the first polishing surface.

Preferably, the first grinding surface is provided with a plurality of blades, and the plurality of blades are arranged on the first grinding surface in a scattering manner with the central hole as a center, and the guide groove is formed between adjacent blades.

Preferably, the doctor blade is arranged in an arc shape.

Preferably, the fixed grinding disc and the movable grinding disc are both hemispherical.

The utility model further aims to provide a rotary wheel mill which comprises a machine shell, a pushing component and a rotary driving piece, and is characterized by further comprising any grinding disc component, wherein the machine shell comprises a feeding bin and a grinding bin which are arranged in a separated mode along a first direction, a feeding hole is formed in the top of the feeding bin, a discharging hole is formed in the bottom of the grinding bin, the feeding bin and the grinding bin are connected through a communication hole, a fixed grinding disc and a movable grinding disc are arranged in the grinding bin at intervals along the first direction, the central hole on the fixed grinding disc is opposite to the communication hole, the grinding space is opposite to the discharging hole, the movable grinding disc is connected with the machine shell in a rotary mode through a transmission shaft, the rotary driving piece is connected with the transmission shaft, and the pushing component can push materials in the feeding bin to a position between the first surface and the second surface through the central hole.

Preferably, the pushing assembly comprises a pushing rod and a pushing driving piece, one end of the pushing rod is inserted into the feeding bin, and the other end of the pushing rod is connected with the pushing driving piece.

Preferably, the pushing assembly further comprises a pushing bin, the pushing bin penetrates through the feeding bin along the first direction and penetrates through the communication port to be fixedly connected with the fixed grinding disc, the pushing bin is connected with an opening at one end of the fixed grinding disc, a middle rotating port is formed in the position, corresponding to the feeding port, of the pushing bin, and the pushing rod penetrates through the pushing bin and is in sliding fit with the pushing bin.

Preferably, the fixed grinding disc and the movable grinding disc are installed on the machine shell in an adjustable distance.

Preferably, the feeding bin and the grinding bin are arranged in a split mode, the distance between the feeding bin and the grinding bin along the first direction is adjustable, and the pushing bin is fixed relative to the feeding bin.

The utility model has the beneficial effects that: the grinding disc assembly in the utility model sets the facing surfaces of the fixed grinding disc and the movable grinding disc, namely the first grinding surface and the second grinding surface, so that the contact area of the materials with the fixed grinding disc and the movable grinding disc is increased, the materials can be fully ground, the possibility of blocking the materials is reduced, the possibility of generating long strip-shaped or sheet-shaped materials outside the allowable particle size range is also reduced, the curvature of the first grinding surface is larger than that of the second grinding surface, namely the size of a gap between the centers of the fixed grinding disc and the movable grinding disc is larger than that of the edges of the fixed grinding disc and the movable grinding disc, the materials to be crushed are gradually crushed into the materials in the allowable particle size range when the materials are conveyed from the grinding space center between the fixed grinding disc and the movable grinding disc to the edge direction, and the materials to be crushed can be prevented from being accumulated in the grinding space center when the feeding frequency is larger and the allowable particle size is smaller, and the risk of blocking the materials of the grinding disc assembly is further reduced; the rotary wheel mill can reduce the risk of equipment blocking by utilizing the millstone assembly and improve the product qualification rate.

Drawings

FIG. 1 is a schematic structural view of a grinding disc assembly in an embodiment of the utility model;

FIG. 2 is a schematic view of a rotary wheel mill according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a casing according to an embodiment of the present utility model.

In the figure:

11. A fixed grinding disc; 11a, a central hole; 11b, a guide chute; 12. a movable millstone; 13. a transmission shaft;

2. a housing; 21. a feeding bin; 21a, a feed inlet; 21b, a communication port; 22. a grinding bin; 22a, a feed opening; 3. a pushing component; 31. a pushing rod; 32. and (5) pushing the storage bin.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply indicates that the first feature is level greater than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1, the grinding disc assembly provided in the embodiment of the utility model comprises a fixed grinding disc 11, a movable grinding disc 12 and a transmission shaft 13, wherein the fixed grinding disc 11 and the movable grinding disc 12 are coaxially arranged at intervals to form a grinding space therebetween, one side of the fixed grinding disc 11 facing the movable grinding disc 12 is a first grinding surface, one side of the movable grinding disc 12 facing the fixed grinding disc 11 is a second grinding surface, the first grinding surface and the second grinding surface are both spherical surfaces in the same direction, the curvature of the first grinding surface is larger than that of the second grinding surface, a center hole 11a is formed in the center of the fixed grinding disc 11, and the transmission shaft 13 is coaxially connected with one side of the movable grinding disc 12 facing away from the fixed grinding disc 11.

The material to be crushed can enter a grinding space formed between the first grinding surface and the second grinding surface through the central hole 11a of the fixed grinding disc 11, the movable grinding disc 12 is connected with an external driving piece through the transmission shaft 13 to rotate relative to the fixed grinding disc 11, and further the material to be crushed in the grinding space is ground and crushed; since the curvature of the first grinding surface is larger than that of the second grinding surface, that is, the gap between the centers of the fixed grinding disc 11 and the movable grinding disc 12 is larger than that between the edges of the fixed grinding disc 11 and the movable grinding disc 12, the materials to be crushed are gradually crushed into materials in the allowable particle size range when conveyed from the center of the grinding space between the fixed grinding disc 11 and the movable grinding disc 12 to the edge direction, and the materials to be crushed can be prevented from being accumulated in the center of the grinding space when the feeding frequency is larger and the allowable particle size is smaller, so that the risk of clamping materials of the grinding disc assembly is further reduced.

In order to reduce the production cost of the device, the fixed grinding disc 11 and the movable grinding disc 12 in the embodiment are both arranged in a hemispherical shape, more specifically, the curvature of the first grinding surface is 1/850, and the curvature of the second grinding surface is 1/900.

Further, the first grinding surface is further provided with a guide groove 11b, and the plurality of guide grooves 11b are arranged on the first grinding surface in a scattering mode by taking the central hole 11a as the center so as to guide the material to diffuse from the center to the edge, and further prevent the material from blocking the central hole 11a to cause machine blocking. In one embodiment, the guide groove 11b is recessed in the first grinding surface, and one end of the guide groove 11b is communicated with the central hole 11a; in other embodiments, the guide groove 11b may be formed by enclosing the scrapers protruding from the first grinding surface, where the plurality of scrapers are disposed on the first grinding surface in a scattering manner with the central hole 11a as the center, and the adjacent scrapers form the guide groove 11b therebetween, so that the contact area between the scrapers and the material can be increased, thereby fully grinding the material and improving the grinding quality. In order to further prevent the removal of sheet-like or strip-like material outside the allowed particle size range from the grinding space, the doctor blade is arranged in an arc shape. Illustratively, the doctor blade extends at one end to the central bore 11a and at the other end to connect with the circumferential surface of the stationary grinding disc 11. It will be appreciated that when the movable abrasive disc 12 rotates, it rotates in a direction opposite to the direction of bending of the blade.

Referring to fig. 2-3, another embodiment of the present invention further provides a rotary wheel mill, which includes a casing 2, a pushing component 3, a rotary driving component (i.e. the above external driving component, not shown in the drawing) and the above grinding disc component, where the casing 2 includes a feeding bin 21 and a grinding bin 22 separately disposed along a first direction (X direction in the drawing), the top of the feeding bin 21 is provided with a feeding hole 21a, the bottom of the grinding bin 22 is provided with a discharging hole 22a, the feeding bin 21 and the grinding bin 22 are connected through a communication hole 21b, the fixed grinding disc 11 and the movable grinding disc 12 are distributed in the grinding bin 22 along the first direction at intervals, where a central hole 11a on the fixed grinding disc 11 faces the communication hole 21b, the grinding space faces the discharging hole 22a, the movable grinding disc 12 is rotationally connected with the casing 2 through a transmission shaft 13, one end of the transmission shaft 13 away from the movable grinding disc 12 is connected with an output end of the rotary driving component, the movable grinding disc 12 can rotate around its own axis under the action of the rotary driving component so as to grind materials in the grinding space, and the rotary driving component can be pushed into the casing 2 through the central hole 21 by the rotary driving component, and the movable grinding disc 12 can be pushed into the grinding bin 11 through the central hole 11.

The material to be crushed enters the feeding bin 21 through the feeding hole 21a, the pushing component 3 pushes the material to move towards the direction close to the grinding bin 22, so that the material enters the grinding space through the communication hole 21b and the center hole 11a, the material is gradually crushed along with the rotation of the movable grinding disc 12, and the material with the particle size in the range is allowed to be separated from the rotary wheel mill through the discharging hole 22a to finish discharging.

Illustratively, the pushing assembly 3 includes a pushing rod 31 and a pushing driver (not shown in the figures), one end of the pushing rod 31 is inserted into the feeding bin 21, and the other end is connected to an output end of the pushing driver. The pushing driving piece can specifically adopt linear driving structures such as an air cylinder, an oil cylinder and the like.

In order to make the material in the feeding bin 21 timely transferred to the grinding bin 22, the pushing assembly 3 in this embodiment further includes a hollow cylindrical pushing bin 32, the pushing bin 32 is penetrated in the feeding bin 21 along the first direction and penetrates through the communication port 21b to be fixedly connected with the fixed grinding disc 11, the position of the pushing bin 32 corresponding to the feeding port 21a is provided with a middle rotating port, it is understood that the area of an opening of the feeding port 21a, which is close to one end of the pushing bin 32, is smaller than that of the middle rotating port, so that the material entering the feeding bin through the feeding port 21a can fall into the pushing bin 32 completely, the pushing bin 32 is connected with one end opening of the fixed grinding disc 11, one end of the pushing rod 31 is penetrated in the pushing bin 32 and is in sliding fit with the pushing bin 32, and the pushing rod 31 can push the material in the pushing bin 32 into the grinding space. Illustratively, the feed opening 21a is provided as a cone shape, which gradually increases in inner diameter from one end near the pusher assembly 3 to the other end.

The gap between the existing rotary wheel mills is generally a certain definite value between 1.8mm and 5.0mm, and when different production requirements are met, the gap is difficult to adapt to the requirements of producing materials with different particle sizes. According to the rotary wheel mill, the fixed grinding disc 11 and the movable grinding disc 12 are arranged in a structure with adjustable spacing, so that the requirements of producing materials with different particle sizes can be met, the applicability is further improved, and the blanking opening 22a is also arranged in a conical shape and gradually reduces the inner diameter from one end close to the grinding disc assembly to the other end.

There are various ways of adjusting the distance between the fixed grinding disc 11 and the movable grinding disc 12, for example, adjusting the position of the fixed grinding disc 11 relative to the casing 2 or adjusting the position of the movable grinding disc 12 relative to the casing 2, but because the fixed grinding disc 11 and the movable grinding disc 12 are both positioned inside the casing 2, the adjustment is inconvenient. Based on this, referring to fig. 1, the feeding bin 21 and the grinding bin 22 in this embodiment are separately provided, the distance between the feeding bin 21 and the grinding bin 22 can be adjusted along the first direction, and the pushing bin 32 fixedly connected with the fixed grinding disc 11 is fixed relative to the feeding bin 21, so that when the distance between the feeding bin 21 and the grinding bin 22 changes, the distance between the fixed grinding disc 11 and the movable grinding disc 12 also changes. The manner of adjusting the distance between the feeding bin 21 and the grinding bin 22 is also varied, for example, the feeding bin 21 and the grinding bin 22 are slidably connected in the first direction, and will not be described in detail in this embodiment.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The grinding disc assembly comprises a fixed grinding disc (11), a movable grinding disc (12) and a transmission shaft (13), wherein the fixed grinding disc (11) and the movable grinding disc (12) are coaxially arranged at intervals to form a grinding space between the fixed grinding disc and the movable grinding disc, one side of the fixed grinding disc (11) faces the movable grinding disc (12) to form a first grinding surface, a central hole (11 a) is formed in the center of the fixed grinding disc (11), one side of the movable grinding disc (12) faces the fixed grinding disc (11) to form a second grinding surface, and the transmission shaft (13) is in back to the movable grinding disc (12) to form one side of the fixed grinding disc (11) to be coaxially connected with the fixed grinding disc, and the grinding disc assembly is characterized in that: the first grinding surface and the second grinding surface are arranged to be spherical surfaces in the same direction, and the curvature of the first grinding surface is larger than that of the second grinding surface.

2. The abrasive disc assembly of claim 1 wherein said first abrasive surface is provided with a guide trough (11 b), a plurality of said guide troughs (11 b) being disposed in a scattering pattern on said first abrasive surface centered on said central aperture (11 a).

3. The abrasive disc assembly according to claim 2, wherein the first abrasive surface is provided with a plurality of blades, the plurality of blades being arranged on the first abrasive surface in a scattering manner centering on the center hole (11 a), the guide groove (11 b) being formed between adjacent blades.

4. The abrasive disc assembly of claim 3 wherein said doctor blade is configured in an arcuate shape.

5. The abrasive disc assembly according to claim 1, characterized in that the stationary abrasive disc (11) and the movable abrasive disc (12) are each provided as hemispherical shapes.

6. The rotary wheel mill comprises a machine shell (2), a pushing component (3) and a rotary driving piece, and is characterized by further comprising a grinding disc component according to any one of claims 1-5, wherein the machine shell (2) comprises a feeding bin (21) and a grinding bin (22) which are arranged along a first direction in a separated mode, a feeding opening (21 a) is formed in the top of the feeding bin (21), a discharging opening (22 a) is formed in the bottom of the grinding bin (22), the feeding bin (21) and the grinding bin (22) are connected through a communication opening (21 b), a fixed grinding disc (11) and a movable grinding disc (12) are arranged in the grinding bin (22) along the first direction at intervals, a center hole (11 a) on the fixed grinding disc (11) is opposite to the communication opening (21 b), the grinding space is opposite to the discharging opening (22 a), the movable grinding disc (12) is rotationally connected with the machine shell (2) through a transmission shaft (13), and the rotary driving piece is connected with the transmission shaft (13), and the grinding disc (11) can be pushed into a center hole (21 b) through the center hole.

7. The rotary wheel mill according to claim 6, characterized in that the pushing assembly (3) comprises a pushing rod (31) and a pushing driving member, one end of the pushing rod (31) is inserted into the feeding bin (21), and the other end of the pushing rod (31) is connected with the pushing driving member.

8. The rotary wheel mill according to claim 7, wherein the pushing component (3) further comprises a pushing bin (32), the pushing bin (32) is penetrated in the feeding bin (21) along the first direction and penetrates through the communication port (21 b) to be fixedly connected with the fixed grinding disc (11), the pushing bin (32) is connected with an opening at one end of the fixed grinding disc (11), a middle rotating port is formed in the pushing bin (32) at a position corresponding to the feeding port (21 a), and the pushing rod (31) is penetrated in the pushing bin (32) and is in sliding fit with the pushing bin (32).

9. The rotary wheel mill according to claim 8, characterized in that the stationary grinding disc (11) and the movable grinding disc (12) are mounted on the housing (2) with adjustable spacing.

10. The rotary wheel mill according to claim 9, characterized in that the feeding bin (21) and the grinding bin (22) are separately arranged and are spaced apart from each other in the first direction, and the pushing bin (32) is fixed relative to the feeding bin (21).