CN104668192A - High-precision grading wheel for jet mill - Google Patents
High-precision grading wheel for jet mill Download PDFInfo
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- CN104668192A CN104668192A CN201510100070.9A CN201510100070A CN104668192A CN 104668192 A CN104668192 A CN 104668192A CN 201510100070 A CN201510100070 A CN 201510100070A CN 104668192 A CN104668192 A CN 104668192A
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- impeller disk
- grading wheel
- high accuracy
- blade
- disintegrating mill
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Abstract
The invention discloses a high-precision grading wheel for a jet mill. The high-precision grading wheel comprises a front impeller disc, a rear impeller disc and a plurality of blades, wherein the blades are fixedly connected between the front impeller disc and the rear impeller disc and form a circle in an enclosing mode; a feeding gap is formed between adjacent blades; a cavity is formed on the inner side of the circle of the blades. The high-precision grading wheel further comprises a shaft sleeve, at least one middle impeller disc and a plurality of pull rods, wherein the shaft sleeve is arranged in the cavity, and the two ends of the shaft sleeve are fixedly connected between the front impeller disc and the rear impeller disc; the pull rods are arranged between the blades and the shaft sleeve, and the two ends of each of the pull rods are fixedly connected between the front impeller disc and the rear impeller disc; the middle impeller disc is arranged between the front impeller disc and the rear impeller disc, and is fixedly connected with the blades, the pull rods and the shaft sleeve in sequence from outside to inside. The high-precision grading wheel can greatly improve the rotating speed of an impeller, the stability of rotating speed is good, the strength of the impeller can be greatly improved, the grading fineness is improved, and the yield is improved.
Description
Technical field
The present invention relates to a kind of airslide disintegrating mill grading wheel, specifically relate to a kind of airslide disintegrating mill high accuracy grading wheel.
Background technology
The operation principle of airslide disintegrating mill is: by compressed air is spurted into pulverizing cavity through nozzle at high speeds, at the joint place material of multiply high pressure draught by impact several times, friction, shearing and pulverizing, material after pulverizing moves to graded region with ascending air under blower fan draft effect, under the powerful centrifugal action that the grading wheel of High Rotation Speed produces, make thickness feed separation, meet the fine grained of granularity requirements by grading wheel discharging, coarse granule drops to disintegrating area to be continued to pulverize.Wherein, during grading wheel work, under the influence of centrifugal force, large or heavy particle centrifugalization power is large for gas powder, therefore is got rid of to grading wheel peripheral to graded region limit wall, and no longer by the impact of centrifugal force, naturally drops in pulverizer and continue to pulverize; Little or light material is little by centrifugal action, enters grading wheel with air-flow, along Flows to next unit.By regulate grading wheel rotating speed just adjustable gradation time centrifugal force size, reach the object of the material separating designated size.
In prior art, the structure of two fulcrum grading wheel comprises the front impeller disk, the rear impeller disk and is fixedly connected on the circle blade between the forward and backward impeller disk, there is between adjacent blade charging seam, the inner side of multiple blade forms cavity, and the forward and backward impeller disk is fixedly connected with by axle sleeve with grading wheel power input shaft.There is following defect in this pair of fulcrum grading wheel structure: two fulcrum grading wheel is when High Rotation Speed, if axially lengthened, the centrifugal force suffered by blade will strengthen, and will cause grading wheel deformable blade.And grading wheel axial length strengthens, can increase passage, increase throughput, increase yield, therefore, this pair of fulcrum grading wheel structure limits the output of airslide disintegrating mill.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of airslide disintegrating mill high accuracy grading wheel, and greatly can improve wheel speed, speed stability is good, and greatly can improve impeller intensity, improves classification fineness, improves output.
Technical scheme of the present invention is achieved in that
A kind of airslide disintegrating mill high accuracy grading wheel, comprise the front impeller disk, the rear impeller disk and some blades, described blade be fixedly connected on described before, form a circle between the rear impeller disk, there is between adjacent blades charging seam, the inner side of one circle blade forms cavity, it is characterized in that: also comprise axle sleeve, the impeller disk and several pull bars at least one, described axle sleeve is located in described cavity, and the two ends of described axle sleeve be fixed in described before, between the rear impeller disk, described pull bar is located between described blade and described axle sleeve, and the two ends of described pull bar are fixed between the described front impeller disk and the described rear impeller disk, the described middle impeller disk is located between the described front impeller disk and the described rear impeller disk, and the described middle impeller disk is from being fixedly connected with described blade, described pull bar, described axle sleeve successively outside to inside.
As a further improvement on the present invention, described blade and Axial and radial at an angle, uniform arrangement.
As a further improvement on the present invention, pull bar described in several is along the evenly arrangement of axle circumference.
As a further improvement on the present invention, before described, the middle impeller disk is wheel hub form, and the described rear impeller disk is disc format.
As a further improvement on the present invention, the side on the described front impeller disk dorsad on the described rear impeller disk is provided with some circle annular tooth, and the discharger of described annular tooth and grading wheel is formed and forms labyrinth seal.
As a further improvement on the present invention, the side on the described front impeller disk dorsad on the described rear impeller disk is also provided with the whirlwind sheet that several surround round, and described whirlwind sheet is positioned at the periphery of the annular tooth of outmost turns.
As a further improvement on the present invention, the cross section of described annular tooth is rectangle.
As a further improvement on the present invention, the described middle impeller disk is from welding with described blade, described pull bar, described axle sleeve successively outside to inside.
The invention has the beneficial effects as follows: the invention provides a kind of airslide disintegrating mill high accuracy grading wheel, by the impeller disk in increase between the forward and backward impeller disk, can reinforced blade intensity, indeformable, and grading wheel can be made axially to lengthen, increase impeller area, increase passage, increase throughput, thus improve output.Wherein, before, during and after held by several uniform pull bars between the impeller disk, can greatly improve grading wheel intensity, avoid deformable blade.Due to the increase of grading wheel intensity, and be two fulcrum grading wheels, therefore, it is possible to greatly improve the rotating speed of grading wheel, and speed stability is good.Wherein, blade is oblique blade, and namely blade and Axial and radial are at an angle, uniform arrangement, can increase yield and classification fineness.Wherein, the front impeller disk is provided with labyrinth seal, own structural characteristics can be utilized to produce throttle effect and centrifugal force, to play the dustproof effect of grading wheel discharge end, without the need to external gas source, reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is the axial sectional view of grading wheel of the present invention;
Fig. 2 is grading wheel left view of the present invention;
Fig. 3 be in Fig. 1 A-A to sectional view.
By reference to the accompanying drawings, make the following instructions:
1---front impeller base 11---annular tooth
12---whirlwind sheet 2---rear impeller base
3---blade 4---axle sleeve
5---middle impeller disk 6---pull bar
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of airslide disintegrating mill high accuracy grading wheel, comprise the front impeller disk 1, the rear impeller disk 2 and some blades 3, described blade be fixedly connected on described before, form a circle between the rear impeller disk, there is between adjacent blades charging seam, the inner side of one circle blade forms cavity, also comprise axle sleeve 4, a middle impeller disk 5 and several pull bars 6, described axle sleeve is located in described cavity, and the two ends of described axle sleeve be fixed in described before, between the rear impeller disk, described pull bar is located between described blade and described axle sleeve, and the two ends of described pull bar are fixed between the described front impeller disk and the described rear impeller disk, the described middle impeller disk is located between the described front impeller disk and the described rear impeller disk, and the described middle impeller disk is from being fixedly connected with described blade, described pull bar, described axle sleeve successively outside to inside.
Preferably, pull bar described in several is along the evenly arrangement of axle circumference.
In said structure, by the impeller disk in increasing between the forward and backward impeller disk, can reinforced blade intensity, indeformable, and then grading wheel can be made axially to lengthen, increase grading wheel area, increase passage, increase throughput, increase yield.And before, during and after held by several uniform pull bars between the impeller disk, the overall strength of grading wheel can be increased, avoid deformable blade, due to the increase of grading wheel intensity, and be two fulcrum grading wheels, greatly can improve the rotating speed of grading wheel, and speed stability is good.。
Preferably, described blade and Axial and radial at an angle, uniform arrangement.Namely blade is oblique blade, and oblique blade can increase yield and classification fineness.
Preferably, before described, the middle impeller disk is wheel hub form, and the described rear impeller disk is disc format.Grading wheel rear end is closed by the rear impeller disk of disc type, and before wheel hub form, the middle impeller disk to be to form tapping channel.
Preferably, the side on the described front impeller disk dorsad on the described rear impeller disk is provided with some circle annular tooth 11, and the discharger of described annular tooth and grading wheel is formed and forms labyrinth seal.Like this, own structural characteristics can be utilized to produce throttle effect and centrifugal force, to play the dustproof effect of grading wheel discharge end, without the need to external gas source, reduce energy consumption.During concrete enforcement, the discharger of airslide disintegrating mill is also provided with some circle annular tooth on the face of grading wheel, concentric with the annular tooth of discharger, the interlaced arrangement of the annular tooth of grading wheel, does not contact and is formed with gap each other, to form labyrinth seal.
Preferably, the side on the described front impeller disk dorsad on the described rear impeller disk is also provided with several whirlwind sheets 12 surrounding round, and described whirlwind sheet is positioned at the periphery of the annular tooth of outmost turns, preferably, the cross section of whirlwind sheet and Axial and radial at an angle, uniform arrangement.Rotating by rotor the centrifugal force produced can coordinate labyrinth seal to reach dust-proof object.
Preferably, the cross section of described annular tooth is rectangle.
Preferably, the described middle impeller disk is from welding with described blade, described pull bar, described axle sleeve successively outside to inside.
To sum up, airslide disintegrating mill high accuracy grading wheel of the present invention can improve wheel speed greatly, and speed stability is good, and greatly can improve impeller intensity, improves classification fineness, improves output.
Above embodiment is with reference to accompanying drawing, to a preferred embodiment of the present invention will be described in detail.Those skilled in the art by carrying out amendment on various forms or change to above-described embodiment, but when not deviating from essence of the present invention, drops within protection scope of the present invention.
Claims (8)
1. an airslide disintegrating mill high accuracy grading wheel, comprise the front impeller disk (1), the rear impeller disk (2) and some blades (3), described blade be fixedly connected on described before, form a circle between the rear impeller disk, there is between adjacent blades charging seam, the inner side of one circle blade forms cavity, it is characterized in that: also comprise axle sleeve (4), the impeller disk (5) and several pull bars (6) at least one, described axle sleeve is located in described cavity, and the two ends of described axle sleeve be fixed in described before, between the rear impeller disk, described pull bar is located between described blade and described axle sleeve, and the two ends of described pull bar are fixed between the described front impeller disk and the described rear impeller disk, the described middle impeller disk is located between the described front impeller disk and the described rear impeller disk, and the described middle impeller disk is from being fixedly connected with described blade, described pull bar, described axle sleeve successively outside to inside.
2. airslide disintegrating mill high accuracy grading wheel according to claim 1, is characterized in that: described blade and Axial and radial at an angle, uniform arrangement.
3. airslide disintegrating mill high accuracy grading wheel according to claim 1, is characterized in that: pull bar described in several is along the evenly arrangement of axle circumference.
4. airslide disintegrating mill high accuracy grading wheel according to claim 1, is characterized in that: before described, the middle impeller disk is wheel hub form, and the described rear impeller disk is disc format.
5. airslide disintegrating mill high accuracy grading wheel according to claim 1, it is characterized in that: the side on the described front impeller disk dorsad on the described rear impeller disk is provided with some circle annular tooth (11), and the discharger of described annular tooth and grading wheel is formed and forms labyrinth seal.
6. airslide disintegrating mill high accuracy grading wheel according to claim 5, it is characterized in that: the side on the described front impeller disk dorsad on the described rear impeller disk is also provided with several whirlwind sheets surrounding round (12), and described whirlwind sheet is positioned at the periphery of the annular tooth of outmost turns.
7. airslide disintegrating mill high accuracy grading wheel according to claim 5, is characterized in that: the cross section of described annular tooth is rectangle.
8. airslide disintegrating mill high accuracy grading wheel according to claim 1, is characterized in that: the described middle impeller disk is from welding with described blade, described pull bar, described axle sleeve successively outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510100070.9A CN104668192A (en) | 2015-03-06 | 2015-03-06 | High-precision grading wheel for jet mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510100070.9A CN104668192A (en) | 2015-03-06 | 2015-03-06 | High-precision grading wheel for jet mill |
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| Publication Number | Publication Date |
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| CN104668192A true CN104668192A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510100070.9A Pending CN104668192A (en) | 2015-03-06 | 2015-03-06 | High-precision grading wheel for jet mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457728A (en) * | 2015-12-22 | 2016-04-06 | 昆山强威粉体设备有限公司 | Efficient ultramicro-material grading wheel |
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| CN2838774Y (en) * | 2005-06-23 | 2006-11-22 | 南京华源非金属粉体材料有限公司 | Vertical type ceramic impeller clasfficiator |
| CN201076857Y (en) * | 2007-09-01 | 2008-06-25 | 江苏科行环境工程技术有限公司 | Clathrate rotor of ultra-fine powder selector |
| US20100072115A1 (en) * | 2008-03-12 | 2010-03-25 | Nobuyasu Makino | Classification device |
| CN202667142U (en) * | 2012-06-28 | 2013-01-16 | 自贡硬质合金有限责任公司 | Grading wheel |
| CN104226440A (en) * | 2013-06-08 | 2014-12-24 | 昆山市密友装备制造有限责任公司 | High-efficiency energy-saving airflow crusher |
| CN104624500A (en) * | 2015-03-06 | 2015-05-20 | 昆山市密友装备制造有限责任公司 | Efficient and high-precision stepped wheel structure of jet mill |
-
2015
- 2015-03-06 CN CN201510100070.9A patent/CN104668192A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2838774Y (en) * | 2005-06-23 | 2006-11-22 | 南京华源非金属粉体材料有限公司 | Vertical type ceramic impeller clasfficiator |
| CN201076857Y (en) * | 2007-09-01 | 2008-06-25 | 江苏科行环境工程技术有限公司 | Clathrate rotor of ultra-fine powder selector |
| US20100072115A1 (en) * | 2008-03-12 | 2010-03-25 | Nobuyasu Makino | Classification device |
| CN202667142U (en) * | 2012-06-28 | 2013-01-16 | 自贡硬质合金有限责任公司 | Grading wheel |
| CN104226440A (en) * | 2013-06-08 | 2014-12-24 | 昆山市密友装备制造有限责任公司 | High-efficiency energy-saving airflow crusher |
| CN104624500A (en) * | 2015-03-06 | 2015-05-20 | 昆山市密友装备制造有限责任公司 | Efficient and high-precision stepped wheel structure of jet mill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457728A (en) * | 2015-12-22 | 2016-04-06 | 昆山强威粉体设备有限公司 | Efficient ultramicro-material grading wheel |
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Application publication date: 20150603 |