CN110328021B - Stirring disc for superfine grinding, vertical stirring device and vertical superfine stirring mill - Google Patents
Stirring disc for superfine grinding, vertical stirring device and vertical superfine stirring mill Download PDFInfo
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- CN110328021B CN110328021B CN201910646136.2A CN201910646136A CN110328021B CN 110328021 B CN110328021 B CN 110328021B CN 201910646136 A CN201910646136 A CN 201910646136A CN 110328021 B CN110328021 B CN 110328021B
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- 238000003756 stirring Methods 0.000 title claims abstract description 87
- 239000000463 material Substances 0.000 claims abstract description 31
- 229920001971 elastomer Polymers 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 4
- 239000011707 mineral Substances 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
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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
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/163—Stirring means
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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
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a stirring disc for superfine grinding, a vertical stirring device and a vertical superfine stirring mill, wherein the stirring disc for superfine grinding comprises a hollow disc body and a hub, and a plurality of arc-shaped guide structures are radially arranged on the hollow disc body from the hub to the edge; the hollow disc body is provided with a plurality of circulating holes penetrating through the disc body, and a plurality of arc-shaped guide structures and the circulating holes are alternately arranged on the hollow disc body; the hollow tray body is provided with a plurality of turbulence hole columns which are arranged in an oriented way. A plurality of stirring discs for superfine grinding are fixed on a hollow main shaft through keys and sleeves, and the hollow main shaft is connected with an external material conveying device through a pipeline. The mineral feeding angle can be adjusted, the superfine grinding efficiency of superfine grinding equipment can be obviously improved by using the stirring device, the superfine grinding efficiency can be improved by more than 20-30% compared with the conventional superfine grinding efficiency, the superfine grinding time can be obviously reduced, the abrasion is reduced, the service life is prolonged, the running and maintenance cost of enterprises is reduced, and the economic benefit is improved.
Description
Technical Field
The invention relates to a vertical superfine stirring mill in the fields of minerals, chemical industry and the like, in particular to a stirring disc for superfine grinding, a vertical stirring device and a vertical superfine stirring mill.
Background
The superfine stirring mill is equipment for driving grinding medium (such as ceramic balls, gravel and the like) and materials in a cylinder to move by a disc type stirring device, and achieving the aim of superfine grinding through interaction between the medium and the materials and between the materials (superfine grinding generally refers to the granularity D90 of a product is less than or equal to 10 mu m). The stirring device is generally used in the field of wet superfine grinding, and the superfine grinding material is mainly achieved by virtue of grinding media, friction force among materials and grinding force, and the required product granularity is too fine, so that the stirring device is required to be subjected to additional fine design to achieve the technical requirement of required superfine grinding. In recent years, with the gradual reduction of the embedding granularity of materials in the fields of minerals, chemical industry and the like, the dissociation granularity also gradually reduces, and the application of the material is more and more extensive, especially in the field of superfine grinding of the minerals, the chemical industry and the like.
The stirring device inside the existing mill is provided with a plurality of stirring devices such as a rod type stirring device, a wheel type stirring device, a spiral stirring device and a disc type stirring device, wherein the disc type stirring device is relatively suitable for superfine grinding, a sand mill dispersing mechanism for the coating industry is disclosed in Chinese patent CN103878049A, the structure is quite simple, the superfine grinding purpose can be achieved only by adjusting the disc spacing and prolonging the superfine grinding time, the effect is poor, the impeller and the dispersing mechanism are rapid in abrasion, the service life is short, the operation cost is high, the ton power consumption is high, the defects are obvious, and improvement and innovation are needed.
Disclosure of Invention
The invention aims to provide a stirring disc for superfine grinding, a vertical stirring device and a vertical superfine stirring mill.
The invention aims at realizing the following technical scheme:
The stirring disc for superfine grinding comprises a hollow disc body 21 and a central hub 20, wherein a plurality of radial arc-shaped guide structures 23 which are uniformly distributed circumferentially are arranged on the upper surface and the lower surface of the hollow disc body 21 from the outer edge of the hub 20 to the outer edge of the hollow disc body 21;
a circulation hole 22 is arranged in the middle of the sector between two adjacent arc-shaped guide structures 23; the circulating hole 22 axially penetrates through the hollow disc body 21;
the circulation hole 22 is elliptical, fan-shaped, circular or square;
The total area of the openings of all the circulating holes 22 is 0.05 s-0.5 s, s is the surface area of the hollow tray 21;
The upper and lower surfaces of the hollow disc body 21 among the plurality of arc-shaped guide structures 23 are provided with a plurality of turbulence hole columns 24 which are arranged in an oriented manner, and the outer circular pile surface of the hollow disc body 21 is radially and uniformly provided with the turbulence hole columns 24;
The turbulent flow hole column 24 is hollow and tubular and is communicated with the cavity inside the hollow tray body 21; the hollow cavity inside the hollow disc body 21 is provided with an opening in the inner hole of the hub 20;
The arc-shaped guide structure 23 is a strip-shaped protrusion with a circular arc or elliptical arc-shaped cross section, and the protrusion structure is narrow at the upper part and wide at the lower part;
the number of the arc-shaped guide structures 23 is 2n, the number of the circulation holes 22 is n, and n is an integer greater than 0.
The space between the plurality of directionally arranged turbulent hole columns 24 and the radial radially uniformly distributed turbulent hole columns 24 is 1 d-50 d, d is the diameter of the turbulent hole columns 24, and the arrangement of the fan-shaped area specifically comprises:
The outer end of the turbulence hole column 24 is inclined to the outside of the hollow disc body 21 in the first setting region ①, and the included angle between the outer end and the surface of the hollow disc body 21 is c1, and c1=25-45 degrees;
Second setting area ②: the outer end of the disturbing hole column 24 is inclined to an arc-shaped guide structure 23 which is close to the outer end, and the included angle between the disturbing hole column and the surface of the hollow disc body 21 is c2, and c2=3-15 degrees;
Third setting region ③: the outer end of the disturbing hole column 24 is inclined to the circulating hole 22, and the included angle between the disturbing hole column and the surface of the hollow disc body 21 is c1;
Fourth setting area ④: the outer end of the disturbing hole column 24 is inclined to the outside of the hollow disc body 21, and the included angle between the disturbing hole column and the surface of the hollow disc body 21 is c2.
The areas occupied by the first setting area ①, the second setting area ②, the third setting area ③, and the fourth setting area ④ in the sector area include:
One side edge of the sector is defined as a first datum line L1, the other side edge is defined as a second datum line L2, a tangent line from the center of the hollow disc body 21 to the edge of the circulation hole 22 near the first datum line L1 is a third datum line L3, a tangent line from the center of the hollow disc body 21 to the edge of the circulation hole 22 near the second datum line L2 is a fourth datum line L4, a radial parting line which extends from the intersection point of the first datum line L1 and the edge of the hub 20 to the outer edge of the hollow disc body 21 and uniformly divides the area of the sector between the first datum line L1 and the third datum line L3 is a fifth datum line L5, and a radial parting line which extends from the intersection point of the second datum line L2 and the edge of the hub 20 to the outer edge of the hollow disc body 21 and uniformly divides the area of the sector between the second datum line L2 and the fourth datum line L4 is a sixth datum line L6;
Defining a circle which is circumscribed on the side edge of the circulating hole 22, close to the hub 20, and takes the center of the hollow disc body 21 as the center as a first reference circular arc, wherein the radius is R1; a circle inscribed in the side edge of the circulation hole 22, which is far away from the hub 20, with the center of the hollow disc body 21 as the center is a second reference arc; the radius is R2; a circle with a radius R3, which takes the center of the hollow disc 21 as the center, is a second reference arc, r3=r2+the radius/2 of the hollow disc 21.
The first setting region ① includes a region surrounded by the side edge of the hub 20, the fifth reference line L5, the sixth reference line L6, and the first reference arc; the second reference arc, the fourth reference line L4, the sixth reference line L6 and the outer edge of the hollow disc 21; the second reference arc, the third reference line L3, the fifth reference line L5 and the outer edge of the hollow disc 21;
The second setting area ② includes an area surrounded by the side edge of the hub 20, the first reference line L1, the fifth reference line L5 and the outer edge of the hollow disk 21; a region surrounded by the hub 20 side edge, the second reference line L2, the sixth reference line L6 and the outer edge of the hollow disc 21;
The third setting region ③ includes a region surrounded by the first reference arc, the third reference line L3, the fifth reference line L5, and the second reference arc; a region surrounded by the first reference arc, the fourth reference line L4, the sixth reference line L6 and the second reference arc; a region surrounded by the third reference arc, the fourth reference line L4, the third reference line L3 and the second reference arc;
The fourth setting region ④ includes a third reference arc, a fourth reference line L4, a region surrounded by the third reference line L3 and the outer edge of the hollow tray 21.
A vertical stirring device comprising a plurality of stirring discs 13 for superfine grinding according to any one of claims 1 to 4, wherein the stirring discs 13 for superfine grinding are fixed on a hollow main shaft 11 through keys, and adjacent stirring discs 13 for superfine grinding are separated by a sleeve 12 sleeved outside the hollow main shaft 11; the side wall of the hollow main shaft 11 is provided with a hole which is communicated with the cavity inside the hollow disc body 21 through an opening of an inner hole of the hub 20.
The sleeve 12 has a length of 5p to 20p, and p is the thickness of the stirring disk 13 for superfine grinding.
The surfaces of the hollow main shaft 11, the sleeve 12 and the stirring disk 13 for superfine grinding are respectively lined with polyurethane or rubber with the thickness of 5-30 mm.
A vertical superfine stirring mill, comprising a tank body 32, wherein a vertical stirring device 31 as set forth in claim 4, 5 or 6 is arranged in the tank body 32, and a hollow main shaft 11 of the vertical stirring device 31 is connected with an external material conveying device 35 through a pipeline 34.
According to the technical scheme provided by the invention, the stirring disc for superfine grinding, the vertical stirring device and the vertical superfine stirring mill provided by the embodiment of the invention can be seen: the stirring device is provided with an arc-shaped guide structure and a circulating hole, the circulating angle and state of ore pulp can be adjusted, the superfine grinding efficiency of superfine grinding equipment can be obviously improved by 20-30% compared with the conventional superfine grinding efficiency, and the superfine grinding time can be obviously reduced; the stirring disc is provided with the turbulence hole column in a specific direction, newly fed ore pulp enters the inside from the turbulence hole column, so that the original ore pulp flow state can be disturbed, the turbulence degree is improved, the superfine grinding efficiency is improved, a protective layer can be formed on the outer surface of the stirring disc for superfine grinding, the stirring disc is protected from being worn by ore pulp and grinding media, the service life of the stirring disc is obviously prolonged, the running and maintenance cost of enterprises is reduced, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic view of a stirring disc for superfine grinding according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a stirring disc for superfine grinding according to a second embodiment of the present invention;
FIG. 3 is a schematic view of a spoiler hole column according to a first embodiment of the present invention;
fig. 4 is a schematic view of a partially enlarged structure of a stirring disc for superfine grinding according to a first embodiment of the present invention;
FIG. 5 is a schematic view of the D-D section of FIG. 4;
FIG. 6 is a schematic view of the B-B cross-section structure of FIG. 4;
fig. 7 is a schematic structural diagram of a vertical stirring device according to a second embodiment of the present invention;
Fig. 8 is a schematic structural diagram of a vertical ultra-fine stirring mill according to a third embodiment of the present invention.
In the figure, the names and corresponding marks of the components are as follows:
11. Hollow main shaft, 12, sleeve, 13, hollow superfine grinding stirring disk;
21. the hollow disc body 22, the circulating holes 23, the arc-shaped guide structure 24 and the turbulent hole columns;
31. the superfine grinding vertical stirring device comprises a vertical stirring device 32, a tank body 33, materials 34, a pipeline 35 and a material conveying device;
241. a main body of the hole column, 242, and an outer lining of the hole column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Embodiments of the present invention will be described in further detail below. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.
Example 1
As shown in fig. 1 and 2, a stirring disk for superfine grinding comprises a hollow disk body 21 and a central hub 20, wherein a plurality of radial arc-shaped guide structures 23 which are uniformly distributed circumferentially are arranged on the upper surface and the lower surface of the hollow disk body 21 from the outer edge of the hub 20 to the outer edge of the hollow disk body 21. The arc-shaped guide structure 23 is a strip-shaped protrusion with a circular arc or elliptical arc-shaped cross section, and as shown in fig. 3, the protrusion structure is narrow in upper part and wide in lower part. The upper surface and the lower surface of the arc-shaped guide structure 23 are symmetrical in arc direction; as shown in fig. 1, the upper surface of the hollow tray 21, and fig. 2, the lower surface of the hollow tray 21.
A circulation hole 22 is arranged in the middle of the sector between two adjacent arc-shaped guide structures 23; the circulating hole 22 axially penetrates through the hollow disc body 21, and the circulating hole 22 which penetrates through the hollow disc body 21 is tubular, so that a complete cavity is formed in the hollow disc body 21; the circulation hole 22 has an oval, fan-shaped, circular or square structure, such as an oblong hole of the oblong fan-shaped structure of fig. 2. Through the effective matching of the circulation holes 22 and the arc-shaped guide structures 23, the turbulence degree of the internal materials can be improved, a flow field easy for superfine grinding is formed, and the superfine grinding efficiency is improved;
The opening area of all the circulation holes 22 is 0.05s to 0.5s, and s is the area of one side of the hollow tray 21, that is, the area of the upper surface or the lower surface thereof.
The number of the arc-shaped guide structures 23 is 2n, the number of the upper surfaces is n, and the number of the lower surfaces is n; the number of circulation holes 22 is n, which is an integer greater than 0. The minimum limit is only 1 circulation hole 22, and an arc-shaped guide structure 23 on each of the upper and lower surfaces is also possible. The maximum limit is designed according to the structural size requirement.
The upper and lower surfaces of the hollow tray 21 among the plurality of arc-shaped guide structures 23 are provided with a plurality of turbulence hole columns 24 which are arranged in an oriented manner. The outer cylindrical surface of the hollow tray body 21 is radially and uniformly provided with turbulence hole columns 24; the disturbing hole column 24 is hollow and tubular, and is communicated with the inside of the hollow disc body 21, and an opening is arranged in the inner hole of the hub 20 in the cavity inside the hollow disc body 21. The space between the plurality of directionally arranged turbulent hole columns 24 and the radially and radially uniformly distributed turbulent hole columns 24 is 2 d-50 d, wherein the space refers to the center distance, and d is the diameter of the turbulent hole columns 24.
As shown in fig. 3, the disturbing hole column 24 includes a hole column main body 241, and a hole column outer liner 242 is lined outside the hole column main body 241, and is made of polyurethane or rubber with a thickness of 2-10 mm, so as to prevent abrasion, and the outer liner may be the same process as that described in the second embodiment, but with a different thickness.
As shown in fig. 4, a detail view of a region a (sector) of the picture, and referring to fig. 4 and 6, the arrangement of the sector specifically includes:
The outer end of the turbulence hole column 24 is inclined to the outside of the hollow disc body 21 in the first setting region ①, and the included angle between the outer end and the surface of the hollow disc body 21 is c1, and c1=25-45 degrees;
Second setting area ②: the outer end of the disturbing hole column 24 is inclined to an arc-shaped guide structure 23 which is close to the outer end, and the included angle between the disturbing hole column and the surface of the hollow disc body 21 is c2, and c2=3-15 degrees;
Third setting region ③: the outer end of the disturbing hole column 24 is inclined to the circulating hole 22, and the included angle between the disturbing hole column and the surface of the hollow disc body 21 is c1;
fourth setting area ④: the outer end of the disturbing hole column 24 is inclined to the outside of the hollow disc body 21, and the included angle between the disturbing hole column and the surface of the hollow disc body 21 is c2;
The areas occupied by the first setting area ①, the second setting area ②, the third setting area ③, and the fourth setting area ④ in the sector area are shown in fig. 4, and are specifically described as follows:
One side edge of the sector is defined as a first datum line L1, the other side edge is defined as a second datum line L2, a tangent line from the center of the hollow disc body 21 to the edge of the circulation hole 22 near the first datum line L1 is defined as a third datum line L3, a tangent line from the center of the hollow disc body 21 to the edge of the circulation hole 22 near the second datum line L2 is defined as a fourth datum line L4, a radial parting line extending from the intersection point of the first datum line L1 and the side edge of the hub 20 to the outer edge of the hollow disc body 21 and uniformly dividing the area of the sector between the first datum line L1 and the third datum line L3 is defined as a fifth datum line L5, and a radial parting line extending from the intersection point of the second datum line L2 and the side edge of the hub 20 to the outer edge of the hollow disc body 21 and uniformly dividing the area of the sector between the second datum line L2 and the fourth datum line L4 is defined as a sixth datum line L6.
Defining a circle which is circumscribed on the side edge of the circulating hole 22, close to the hub 20, and takes the center of the hollow disc body 21 as the center as a first reference circular arc R1, and the radius is R1; a circle inscribed on the side edge of the circulating hole 22, which is far away from the hub 20, with the center of the hollow disc body 21 as the center is a second reference circular arc R2; the radius is R2; a circle with a radius R3 centered on the center of the hollow disk 21 is a second reference arc r3, r3= (r2+ hollow disk 21 radius)/2.
The first setting region ① includes a region surrounded by the side edge of the hub 20, the fifth reference line L5, the sixth reference line L6, and the first reference arc R1; a region surrounded by the second reference arc R2, the fourth reference line L4, the sixth reference line L6, and the outer edge of the hollow disk 21; the second reference arc R2, the third reference line L3, the fifth reference line L5, and the outer edge of the hollow disk 21;
The second setting area ② includes an area surrounded by the side edge of the hub 20, the first reference line L1, the fifth reference line L5 and the outer edge of the hollow disk 21; a region surrounded by the hub 20 side edge, the second reference line L2, the sixth reference line L6 and the outer edge of the hollow disc 21;
The third setting region ③ includes a region surrounded by the first reference arc R1, the third reference line L3, the fifth reference line L5, and the second reference arc R2; a region surrounded by the first reference arc R1, the fourth reference line L4, the sixth reference line L6 and the second reference arc R2; a third reference arc R3, a fourth reference line L4, and a region surrounded by the third reference line L3 and the second reference arc R2;
The fourth setting region ④ includes the third reference arc R3, the fourth reference line L4, and a region defined by the third reference line L3 and the outer edge of the hollow tray 21.
Example two
As shown in fig. 7, a vertical stirring device comprises stirring discs 13 for superfine grinding in the first embodiment, wherein a plurality of stirring discs 13 for superfine grinding are fixed on a hollow main shaft 11, and adjacent stirring discs 13 for superfine grinding are separated by a sleeve 12 sleeved outside the hollow main shaft 11; the distance between stirring discs 13 for superfine grinding can be changed by adjusting the length of the sleeve 12, the flow direction of internal materials can be controlled by changing the distance, the turbulence degree of the internal materials is improved, and the superfine grinding effect is improved; the side wall of the hollow main shaft 11 is provided with a hole which is communicated with the cavity inside the hollow disc body 21 through an opening of an inner hole of the hub 20.
The sleeve has a length of 5p to 20p, where p is the thickness of the agitator disk 13 for superfine grinding.
Simultaneously, the surfaces of the hollow main shaft 11, the sleeve 12 and the stirring disk 13 for superfine grinding are respectively lined with polyurethane or rubber with the thickness of 5-30 mm. The function is to avoid abrasion to the surface when the equipment is started and stopped.
Example III
As shown in fig. 8, a vertical superfine stirring mill comprises a tank body 32, wherein a vertical stirring device 31 described in the second embodiment is arranged in the tank body 32, and a hollow main shaft 11 of the vertical stirring device 31 is connected with an external material conveying device 35 through a pipeline 34.
According to the invention, the material conveying device 35 is utilized to convey the material into the equipment groove 34 through the hollow main shaft 11, when the vertical stirring device rotates at a certain speed, the turbulence degree of the internal material can be improved through the arc-shaped guide structure 23, the circulating hole 22 and the variable sleeve 12 length arranged on the surface of the hollow disc 21, the action effect between the internal material and the action effect between the material and the grinding medium are effectively improved, and the superfine grinding efficiency is effectively improved by at least 20-30% compared with that of conventional equipment; meanwhile, as the materials enter the groove body 32 through the turbulence hole columns 24 arranged on the surfaces of the hollow main shaft 11 and the hollow disc body 21, the movement state of the original materials can be disturbed by the materials which are newly entered through adjusting the direction of the holes of the turbulence hole columns 24, the turbulence state of the internal materials is improved, and the superfine grinding efficiency is further improved.
In addition, because the vertical stirring device rotates at a certain speed, by adjusting the opening direction of the disturbing hole column 24, the material can form an effective protection layer on the surface of the hollow disc body 21, so that the grinding medium and the material are prevented from contacting the hollow disc body 21, the friction between the grinding medium and the hollow disc body 21 is reduced, the abrasion is reduced, and the service life is prolonged. Therefore, by applying the device and the scheme, the running and maintenance cost of enterprises can be effectively reduced, and the economic benefit of the enterprises can be improved.
The vertical superfine stirring mill is applied to the superfine grinding field in the industries of chemical engineering, mines and the like, and complex and turbulent flow fields can be formed in equipment through the special design of the vertical stirring device, so that the superfine grinding efficiency is improved; meanwhile, through the special design of the opening of the hollow main shaft 11, the stirring device can be protected, the abrasion is reduced, and the service life is prolonged. When the system works, the material 33 needing superfine grinding is conveyed to the inside of the tank body 32 through the pipeline 34 and the vertical stirring device 31 by the material conveying device 35 for superfine grinding. The equipment starts, and vertical agitating unit 31 begins to rotate with certain speed, through the cooperation of vortex hole post 24 and arc guide structure 23, circulation hole 22 on the hollow disk body, can form the flow field that is favorable to superfine grinding in the inside, in addition, through the special arrangement in vortex hole post 24 hole, can form the guard surface at vertical agitating unit 31 surface, keeps apart grinding medium and material effectively and to agitating unit's wearing and tearing, plays the abrasionproof effect. Therefore, the implementation of the scheme can effectively improve the turbulent flow state of the internal materials, the superfine grinding efficiency is at least improved by more than 20-30%, meanwhile, the stirring device can be effectively protected, the abrasion is reduced, the service life is prolonged, the running cost of enterprises is reduced, and the economic benefit of the enterprises is improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (7)
1. The stirring disc for superfine grinding is characterized by comprising a hollow disc body (21) and a central hub (20), wherein a plurality of radial arc-shaped guide structures (23) which are uniformly distributed circumferentially are arranged on the upper surface and the lower surface of the hollow disc body (21) from the outer edge of the hub (20) to the outer edge of the hollow disc body (21);
A circulating hole (22) is arranged in the middle of a sector area between two adjacent arc-shaped guide structures (23); the circulating hole (22) axially penetrates through the hollow disc body (21);
The upper surface and the lower surface of the hollow disc body (21) among the plurality of arc-shaped guide structures (23) are provided with a plurality of turbulence hole columns (24) which are arranged in an oriented way, and the outer circular pile surface of the hollow disc body (21) is radially and uniformly provided with the turbulence hole columns (24);
The turbulence hole column (24) is hollow and tubular and is communicated with the cavity inside the hollow tray body (21); the inner cavity of the hollow disc body (21) is provided with an opening in the inner hole of the hub (20);
the turbulent flow hole column (24) comprises a hole column main body (241), wherein the hole column main body (241) is externally lined with a hole column outer liner (242), the hole column outer liner (242) is made of polyurethane or rubber, and the thickness is 2-10 mm;
The space between the turbulence hole columns (24) which are arranged in a directional manner and the turbulence hole columns (24) which are radially and uniformly distributed is 1 d-50 d, d is the diameter of the turbulence hole column (24), and the arrangement of the fan-shaped area comprises the following steps:
The first setting region (①), the outer end of the turbulence hole column (24) is inclined outwards to the hollow tray body (21), and an included angle between the outer end and the surface of the hollow tray body (21) is c1, and c1=25-45 degrees;
Second setting region (②): the outer end of the disturbing hole column (24) is inclined to an arc-shaped guide structure (23) which is close to the outer end, and the included angle between the outer end and the surface of the hollow disc body (21) is c2, and c2=3-15 degrees;
Third setting region (③): the outer end of the disturbing hole column (24) is inclined to the circulating hole (22) and forms an included angle c1 with the surface of the hollow disc body (21);
Fourth setting region (④): the outer end of the disturbing hole column (24) is inclined outwards towards the hollow disc body (21), and an included angle between the disturbing hole column and the surface of the hollow disc body (21) is c2;
The areas occupied by the first setting area (①), the second setting area (②), the third setting area (③) and the fourth setting area (④) in the sector area comprise:
One side edge of the sector is defined as a first datum line (L1), the other side edge is defined as a second datum line (L2), a tangent line from the center of the hollow disc body (21) to the edge of the circulating hole (22) close to the first datum line (L1) is defined as a third datum line (L3), a tangent line from the center of the hollow disc body (21) to the edge of the circulating hole (22) close to the second datum line (L2) is defined as a fourth datum line (L4), a radial dividing line which uniformly divides the area of the sector between the first datum line (L1) and the third datum line (L3) towards the outer edge of the hollow disc body (21) is extended from the intersection point of the first datum line (L1) and the edge of the hub (20), and a radial dividing line which uniformly divides the area of the sector between the second datum line (L2) and the fourth datum line (L4) towards the outer edge of the hollow disc body (21) is extended from the intersection point of the second datum line (L2) and the edge of the fourth datum line (L4);
Defining a circle which is circumscribed on the side edge of the circulating hole (22) close to the hub (20) and takes the center of the hollow disc body (21) as the center as a first reference circular arc, wherein the radius is R1; a circle which takes the center of the hollow disc body (21) as the center of the circle and is inscribed on the side edge of the circulating hole (22) far away from the hub (20) is a second reference circular arc; the radius is R2; a circle with the radius R3 taking the center of the hollow disc body (21) as the center is a second reference arc, wherein R3= (R2+the radius of the hollow disc body (21))/2;
The first setting area (①) comprises an area surrounded by the side edge of the hub (20), a fifth datum line (L5), a sixth datum line (L6) and a first datum circular arc; the second reference arc, the fourth reference line (L4), the sixth reference line (L6) and the outer edge of the hollow disc body (21) are surrounded to form an area; the second reference arc, the third reference line (L3), the fifth reference line (L5) and the outer edge of the hollow disc body (21) are surrounded to form an area;
The second setting area (②) comprises an area surrounded by the side edge of the hub (20), the first datum line (L1), the fifth datum line (L5) and the outer edge of the hollow disc body (21); the side edge of the hub (20), the second datum line (L2), the sixth datum line (L6) and the outer edge of the hollow disc body (21) are surrounded;
The third setting region (③) comprises a region surrounded by the first reference circular arc, the third reference line (L3), the fifth reference line (L5) and the second reference circular arc; a region surrounded by the first reference arc, the fourth reference line (L4), the sixth reference line (L6) and the second reference arc; a third reference circular arc, a fourth reference line (L4), and a region surrounded by the third reference line (L3) and the second reference circular arc;
The fourth setting region (④) comprises a third reference arc, a fourth reference line (L4), and a region surrounded by the third reference line (L3) and the outer edge of the hollow disk body (21).
2. The stirring disc for superfine grinding according to claim 1, characterized in that the arc-shaped guide structure (23) is a strip-shaped protrusion with a circular arc or elliptical arc-shaped cross section, and the protrusion structure is narrow at the top and wide at the bottom, or;
the number of the arc-shaped guide structures (23) is 2n, the number of the circulating holes (22) is n, and n is an integer greater than 0.
3. Stirring disc for superfine grinding according to claim 1, characterized in that the circulation holes (22) are oval, sector-shaped, circular or square, or;
The open area of all the circulating holes (22) is 0.05 s-0.5 s, and s is the single-side surface area of the hollow disc body (21).
4. A vertical stirring device, characterized by comprising a plurality of stirring discs (13) for superfine grinding according to any one of claims 1 to 3, wherein the stirring discs (13) for superfine grinding are fixed on a hollow main shaft (11) through keys, and adjacent stirring discs (13) for superfine grinding are separated by a sleeve (12) sleeved outside the hollow main shaft (11); the side wall opening of the hollow main shaft (11) is communicated with the cavity inside the hollow disc body (21) through the opening of the inner hole of the hub (20).
5. The vertical stirring device according to claim 4, wherein the sleeve has a length of 5p to 20p, and p is the thickness of the stirring disk (13) for superfine grinding.
6. The vertical stirring device according to claim 4, wherein the surfaces of the hollow main shaft (11), the sleeve (12) and the stirring disc (13) for superfine grinding are lined with polyurethane or rubber of 5-30 mm.
7. A vertical superfine stirring mill, comprises a tank body (32), and is characterized in that a vertical stirring device (31) as claimed in claim 4, 5 or 6 is arranged in the tank body (32), and a hollow main shaft (11) of the vertical stirring device (31) is connected with an external material conveying device (35) through a pipeline (34).
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| CN201910646136.2A CN110328021B (en) | 2019-07-17 | 2019-07-17 | Stirring disc for superfine grinding, vertical stirring device and vertical superfine stirring mill |
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| CN110876975A (en) * | 2019-11-28 | 2020-03-13 | 王宇航 | High-efficiency energy-saving grinding machine |
| EP4049758A1 (en) * | 2021-02-24 | 2022-08-31 | Bühler AG | Wear resistant rotor |
| CN114178004B (en) * | 2021-11-08 | 2023-04-07 | 北京天地融创科技股份有限公司 | Grinding disc and horizontal fine grinding machine with same |
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| CN102059167B (en) * | 2010-11-25 | 2013-05-15 | 长沙矿冶研究院 | Mining micron-sized superfine stirring ore mill |
| CN204544329U (en) * | 2015-03-31 | 2015-08-12 | 东莞市煜田新材料有限公司 | A kind of blade construction |
| GB2574818B (en) * | 2018-06-18 | 2023-06-14 | Hoej Life Ltd | Organic-matter fragmentation apparatus |
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