CN111250224A - Centrifugal grinding separator - Google Patents
Centrifugal grinding separator Download PDFInfo
- Publication number
- CN111250224A CN111250224A CN202010188128.0A CN202010188128A CN111250224A CN 111250224 A CN111250224 A CN 111250224A CN 202010188128 A CN202010188128 A CN 202010188128A CN 111250224 A CN111250224 A CN 111250224A
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- CN
- China
- Prior art keywords
- separation
- outer sleeve
- inner cylinder
- hole
- grinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000227 grinding Methods 0.000 title claims abstract description 80
- 238000000926 separation method Methods 0.000 claims abstract description 153
- 239000002131 composite material Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 34
- 239000002002 slurry Substances 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/161—Arrangements for separating milling media and ground material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
Abstract
The invention is suitable for the technical field of ball milling and crushing. The invention discloses a centrifugal grinding separator, which comprises a separation outer sleeve and a separation inner cylinder arranged in the separation outer sleeve, wherein the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer sleeve is provided with an outer sleeve composite hole which enables the grinding medium to move outwards and classifies materials when rotating, an axially closed separation cavity is arranged between the separation inner cylinder and the separation outer sleeve, and the separation cavity is respectively communicated with the outer sleeve composite hole and the inner cylinder separation hole. When the device is used, the separator rotates under the driving of the separation driving shaft, the outer sleeve composite hole can enable grinding media and materials with larger diameters to be far away from the separation outer sleeve to provide power, and can provide a passage for the materials with smaller diameters to enter the separation cavity for classification, so that the materials can easily enter the separation cavity in a classified mode, the materials are discharged through the inner cylinder separation hole, and the separation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of ball milling, in particular to a centrifugal type milling separator and a centrifugal type milling system.
Background
The existing wet ball milling crushing equipment comprises a grinding cylinder body, a stirrer or a disperser arranged on the grinding cylinder body and connected with a rotating shaft, and a separator arranged on a material discharge hole in the grinding cylinder body. The grinding balls added into the grinding cylinder body during grinding are about more than 2/3 of the cavity of the grinding cylinder body, when the separator adopting the centrifugal principle works, the disperser and the separator which are connected with the main shaft rotate at high speed, the grinding balls are distributed on the inner wall of the grinding cylinder body, the grinding balls distributed around the separator in the middle of the grinding cylinder body are less, and when the separation is carried out, only the materials after grinding can enter the discharge hole from the separation hole on the separator and are discharged under the action of centrifugal force. When the grinder is in a static state, such as stop work or initial time, because the disperser and the separator do not rotate, the grinding balls are deposited on the lower part of the grinding cylinder body under the action of gravity, the separator is immersed by the grinding balls, part of the grinding balls can enter the separation holes of the separator, and part of the grinding balls can be discharged from the discharge hole when being reused, so that the quantity of the grinding balls in the grinding cylinder body is reduced, and the grinding efficiency is further influenced.
In order to prevent the grinding balls from entering the separation holes on the separator when the separator is stationary, the length of the separation holes is increased, for example, in the invention patent of the stirring ball mill with Chinese patent publication No. CN101385989A, the separation holes are arranged in a spiral structure, and the length of the separation holes is increased, so that the grinding balls are not easy to enter the separation holes and are discharged through the discharge holes when the separator is in operation even if the separator is immersed with the grinding balls when the separator is stationary because the separation holes are in a bent structure. Although the above structure partially solves the problem of discharging the grinding balls through the separation holes, the separator is difficult to process due to its complicated structure. Meanwhile, the dynamic balance of the separator during high-speed rotation is not easy to control, and the service life is influenced; meanwhile, the separation path is long when the separation holes of the spiral structure are formed, so that the separation holes are easily blocked, and the separation efficiency is influenced.
Disclosure of Invention
The invention mainly solves the technical problem of providing a centrifugal grinding separator which prevents partial grinding balls from entering a discharge channel when the centrifugal grinding separator is stopped or started to influence grinding quality and efficiency.
In order to solve the problems, the invention provides a centrifugal grinding separator, which comprises a separation outer sleeve and a separation inner cylinder arranged in the separation outer sleeve, wherein the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer sleeve is provided with an outer sleeve composite hole which enables the grinding medium to move outwards and classify materials when rotating, an axially closed separation cavity is arranged between the separation inner cylinder and the separation outer sleeve, and the separation cavity is respectively communicated with the outer sleeve composite hole and the inner cylinder separation hole.
Further, the separation inner cylinder comprises a cylindrical inner cylinder body, and a cavity for accommodating the separation driving shaft and communicating with the inner cylinder separation hole is axially arranged at the center of the inner cylinder body.
Further, when the number of the outer sleeve composite holes is two or more, the outer sleeve composite holes are uniformly distributed on the same circle with the axis of the separating outer sleeve as the center of the circle.
Furthermore, the outer sleeve composite hole and the inner cylinder separation hole are respectively in a strip shape.
Furthermore, the outer sleeve composite hole and the inner cylinder separation hole are obliquely arranged.
Furthermore, the included angle of the radius of the outer sleeve composite hole and the radius of the inner cylinder separation hole with the hole center is 30-45 degrees.
Further, the inner cylinder separation hole and the outer sleeve composite hole are located on different radiuses.
Further, the separation inner cylinder comprises a free end and a limiting end, and the limiting end is provided with a first step for limiting the separation outer sleeve.
Further, the side wall of the inner cylinder receiving cavity at the free end is provided with a second step matched with the separation driving shaft.
Furthermore, the bottom of the inner cylinder accommodating cavity is provided with a fixing hole for fixing the separation driving shaft and the separation inner cylinder.
Furthermore, the inner sides of two axial ends of the separation outer sleeve are provided with an outer sleeve fixing groove matched with the inner cylinder fixing groove on the separation inner cylinder and a fixing pin matched with the inner cylinder fixing groove and the outer sleeve fixing groove after assembly.
Further, the inner cylinder separation hole and the outer sleeve composite hole are respectively in a strip shape, and the length of the outer sleeve composite hole is the same as that of the inner cylinder separation hole.
The invention discloses a centrifugal grinding separator, which is used for separating grinding media and materials, and comprises a separation outer sleeve and a separation inner cylinder arranged in the separation outer sleeve, wherein the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer sleeve is provided with an outer sleeve composite hole which enables the grinding medium to move in the direction far away from the separation outer sleeve and enables materials to be classified when rotating, an axially closed separation cavity is arranged between the separation inner sleeve and the separation outer sleeve, and the separation cavity is respectively communicated with the outer sleeve composite hole and the inner sleeve separation hole. During the use, the separator rotates under the drive of separation drive shaft, and overcoat compound hole can accelerate the grinding medium and the major diameter material that are close to the separation overcoat and provide power, makes it keep away from the removal overcoat direction and removes, can provide again for minor diameter material and get into the hierarchical passageway that provides of separation chamber, makes the material hierarchical entering separation chamber of easily to discharge the material through inner tube separation hole, put forward the separation efficiency. Meanwhile, only one inner barrel separation hole is formed, the inner barrel separation hole and the nearest outer sleeve composite hole are located at different radiuses, namely, the inner barrel separation hole is arranged in a staggered mode, under the action of tension between slurry and the like, when the machine is stopped or started up initially, materials are not prone to entering the inner barrel separation hole, grinding media are prevented from appearing in discharged materials, the quantity of the grinding media is reduced, grinding efficiency is influenced, and grinding quality is influenced.
Drawings
In order to illustrate the embodiments of the invention or the technical solutions in the prior art more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the description only show some embodiments of the invention and therefore should not be considered as limiting the scope, and for a person skilled in the art, other related drawings can also be obtained from these drawings without inventive effort.
FIG. 1 is a schematic cross-sectional view of an embodiment of a centrifugal polishing separator along its axial centerline.
Fig. 2 is a sectional view of the centrifugal polishing separator as it is fixed to the drive shaft along its axial centerline.
Fig. 3 is a schematic structural view of an embodiment of the jacket.
Fig. 4 is a schematic view of the structure in a radial section of the outer sleeve.
Fig. 5 is a schematic sectional view along the direction a-a in fig. 4.
Fig. 6 is a structural cross-sectional view taken along the direction B-B in fig. 4.
Fig. 7 is a schematic sectional view along the direction E-E in fig. 2.
FIG. 8 is a schematic illustration of the distribution of material grinding media in operation.
FIG. 9 is a schematic view of another embodiment of a centrifugal polishing separator.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The following claims are presented to illustrate the invention in further detail in conjunction with specific embodiments and the accompanying drawings, it being understood that the described embodiments are only some of the embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that in the description of the present invention, all directional terms such as "upper", "lower", etc., are used herein to indicate orientations or positional relationships, and are used for convenience in describing the present invention or for convenience in describing the conventional arrangement of the present invention, and do not indicate or imply that the device or component being referred to must have a particular orientation, be constructed in a particular orientation, and be operated. For the purpose of explaining the relative positional relationship of the components, the movement, etc., as shown in the drawings, when the specific attitude is changed, the directional indication may be changed accordingly.
Furthermore, the descriptions herein as relating to "first," "second," etc. are merely for distinguishing and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. The technical features of the first and second aspects can be combined with at least one of the technical features in an explicit or implicit manner. In the description of the present invention, "a plurality" means at least two, i.e., two or more, unless expressly defined otherwise; the meaning of "at least one" is one or both.
As shown in fig. 1-7, the present invention provides a centrifugal polishing separator embodiment.
In the present invention, the slurry refers to a mixture of grinding media, grinding material and liquid during the development grinding. The grinding media are grinding balls. The ball mill centrifugal separator is used for separating the material ground into smaller diameters from the grinding slurry and the separating grinding medium. That is to say separating the desired material from the separating grinding media and the larger diameter material particles.
The centrifugal grinding separator is used for separating grinding media from grinding slurry and comprises a separation outer sleeve 1 and a separation inner cylinder 2 arranged in the separation outer sleeve 1, wherein the separation inner cylinder 2 is provided with inner cylinder separation holes 21; the separation outer sleeve 1 is provided with an outer sleeve composite hole 11 which enables a grinding medium to move outwards and classify materials when rotating, an axially closed separation cavity 3 is arranged between the separation inner cylinder 2 and the separation outer sleeve 1, and the separation cavity 3 is respectively communicated with the outer sleeve composite hole 11 and the inner cylinder separation hole 21.
Specifically, the separation inner cylinder 2 includes a cylindrical inner cylinder body having an inner cylinder housing chamber 23 that houses the separation drive shaft 5 and communicates with the inner cylinder separation hole 21 in the center axial direction. The separation drive shaft 5 is provided with a discharge channel 51, and the discharge channel 51 communicates with the separation chamber 3 through the inner cylinder separation hole 21.
When the number of the outer sleeve composite holes 11 is two or more, the outer sleeve composite holes 11 are uniformly distributed on the same circle with the axis of the separating outer sleeve as the center of the circle.
The outer sleeve composite hole 11 and the inner cylinder separation hole 23 are respectively in a strip shape, and under a normal condition, the length of the outer sleeve composite hole 11 is the same as that of the inner cylinder separation hole 23, so that balance is easier to keep and manufacturing is easier.
The outer sleeve composite hole 11 and the inner cylinder separation hole 23 are obliquely arranged, and the included angle a between the radii of the outer sleeve composite hole and the inner cylinder separation hole and the hole center is 30-45 degrees.
The separation inner cylinder comprises a free end and a limiting end, and the limiting end is provided with a first step 22 for limiting the separation outer sleeve 1. And a second step 24 matched with the separation driving shaft 5 is arranged on the side wall of the inner cylinder containing cavity 23 at the free end. The bottom of the inner cylinder housing chamber 23 is provided with a fixing hole 25 for fixing the separation drive shaft 5 and the separation inner cylinder 2 by a fixing bolt.
The inner sides of the two axial ends of the separation outer sleeve 2 are provided with an outer sleeve fixing groove matched with the inner cylinder fixing groove on the separation inner cylinder and a fixing pin 4 matched with the inner cylinder fixing groove and the outer sleeve fixing groove after assembly.
When the device is installed, the inner sides of the two axial ends of the separation outer sleeve 1 are provided with an outer sleeve fixing groove 12 matched with the inner cylinder fixing groove on the separation inner cylinder 2 and fixing pins 4 matched with the inner cylinder fixing groove and the outer sleeve fixing groove 12 after assembly. The fixing bolt is fixed to the separation drive shaft 5 through a fixing hole 25 in the bottom of the inner cylinder housing chamber 23.
As shown in fig. 8, when in use, the separation device is driven by the separation driving shaft 5 to rotate along the direction E, the separation driving shaft 5 is axially provided with a discharge channel 51, and the discharge channel 51 is communicated with the inner cylinder separation hole 21 and the outer sleeve composite hole 11, the medium conveying mechanism provides energy for the movement of the grinding medium a, that is, when the grinding medium a and the material are distributed on the surface of the separation device, the outer sleeve composite hole 11 can simultaneously enable part of the grinding medium a and the material to move away from the separation outer sleeve 1 along the direction F, and a layer is formed around the surface of the separation outer sleeve 1, that is, the material with a smaller diameter is distributed at a closer distance from the separation outer sleeve 1, and the material with a larger diameter and the grinding medium a are distributed at a farther distance from the separation. And when rotating at a high speed the compound hole 11 of overcoat, inner tube separation hole 21 and discharging channel 51 form the negative pressure for the less diametric material can be inhaled in the compound hole 11 of overcoat, and then discharge through discharging channel 51, and the great material of diameter and grinding medium A then stay in the separation overcoat 1 outside, thereby realize the separation, grinding medium distributes near separator when both can having avoided the separation, the jam that causes, and the separation channel way is short, and separation efficiency is higher. But also can provide grinding energy for the materials with larger diameter and the grinding medium A, thereby improving the grinding efficiency.
Meanwhile, only one inner cylinder separation hole 21 is provided, and the separation cavity 3 is arranged between the outer sleeve composite hole 11 and the inner cylinder separation hole 21 which are closest to the inner cylinder separation hole, so that under the action of tension between slurry and the like, when the machine is stopped or started initially, materials are not easy to enter the inner cylinder separation hole, grinding media are prevented from appearing in discharged materials, the quantity of the grinding media is reduced, the grinding efficiency is influenced, and the grinding quality is influenced.
According to the requirement, in order to further avoid that the materials enter the inner cylinder separation hole 21 to be discharged at the initial time of stopping or starting, the outer sleeve composite hole 11 and the inner cylinder separation hole 21 are arranged in a staggered mode, as shown in fig. 9, namely, the inner cylinder separation hole 21 and the nearest outer sleeve composite hole 11 are located on different radiuses, so that the materials and the grinding balls can be better prevented from entering the inner cylinder separation hole at the initial time of stopping or starting.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments described above, and such modifications or substitutions may be made without departing from the spirit and scope of the present invention in its aspects.
Claims (7)
1. The centrifugal grinding separator is used for separating grinding media from grinding slurry and is characterized by comprising a separation outer sleeve and a separation inner cylinder arranged in the separation outer sleeve, wherein the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer sleeve is provided with an outer sleeve composite hole which enables the grinding medium to move outwards and classify materials when rotating, an axially closed separation cavity is arranged between the separation inner cylinder and the separation outer sleeve, and the separation cavity is respectively communicated with the outer sleeve composite hole and the inner cylinder separation hole.
2. The centrifugal grinding separator of claim 1, wherein: the separation inner cylinder comprises a cylindrical inner cylinder body, a storage separation driving shaft is axially arranged at the center of the inner cylinder body, and the inner cylinder storage cavity is communicated with the inner cylinder separation hole.
3. The centrifugal grinding separator of claim 1, wherein: when the number of the outer sleeve composite holes is two or more, the outer sleeve composite holes are uniformly distributed on the same circle with the axis of the separating outer sleeve as the center of the circle.
4. A centrifugal grinding separator according to claim 3, wherein: the outer sleeve composite hole and the inner cylinder separation hole are respectively in a strip shape.
5. The centrifugal grinding separator of claim 1, wherein: the outer sleeve composite hole and the inner cylinder separation hole are obliquely arranged.
6. The centrifugal grinding separator of claim 5, wherein: the included angle of the radius of the outer sleeve composite hole, the radius of the inner cylinder separation hole and the radius of the hole center is 30-45 degrees.
7. The centrifugal grinding separator of claim 1, wherein: the inner cylinder separation hole and the outer sleeve composite hole are positioned on different radiuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/120500 WO2021184738A1 (en) | 2019-07-26 | 2020-10-12 | Centrifugal grinding separator and grinding system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019106844105 | 2019-07-26 | ||
| CN201910684410 | 2019-07-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111250224A true CN111250224A (en) | 2020-06-09 |
| CN111250224B CN111250224B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010188128.0A Active CN111250224B (en) | 2019-07-26 | 2020-03-17 | Centrifugal grinding separator |
| CN202010188753.5A Active CN111250225B (en) | 2019-07-26 | 2020-03-17 | Centrifugal grinding system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010188753.5A Active CN111250225B (en) | 2019-07-26 | 2020-03-17 | Centrifugal grinding system |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN111250224B (en) |
| WO (1) | WO2021184738A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184738A1 (en) * | 2019-07-26 | 2021-09-23 | 湖北迈兆机械有限公司 | Centrifugal grinding separator and grinding system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111250224B (en) | 2023-11-24 |
| CN111250225A (en) | 2020-06-09 |
| WO2021184738A1 (en) | 2021-09-23 |
| CN111250225B (en) | 2023-12-01 |
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