CN1669660A - Grinding drum and stirring mill of grinding and crushing machinery - Google Patents

Grinding drum and stirring mill of grinding and crushing machinery Download PDF

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Publication number
CN1669660A
CN1669660A CN 200410081580 CN200410081580A CN1669660A CN 1669660 A CN1669660 A CN 1669660A CN 200410081580 CN200410081580 CN 200410081580 CN 200410081580 A CN200410081580 A CN 200410081580A CN 1669660 A CN1669660 A CN 1669660A
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section
discharging opening
cylindrical shell
mill tube
mill
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CN1317079C (en
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毕舒
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Bi Shu
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Abstract

The invention discloses a cylindrical barrel of grinding machine, in which the shaft of the grinding machine can be set to stirring. One end of the barrel is set a discharge hole, and off a certain distance from the hole there is a rotating speed transmission span, where the distance from the point on the inwall lateral section to the center of the rotating axis are different, which makes the powder rotating in the lateral section in variably velocity. Also, the invention relates to a stirring grinder, including a grinding barrel, a actuating mechanism and a rotating chief axis, wherein the barrel has the said structure, and the rotating chief axis is set inside the barrel along the barrel axis, the actuating mechanism drives the rotating chief axis to rotate. The polygonal structure off the discharge hole of the invention makes the shearing, compression, collision in the different sections of the same barrel, which homologous to the grinding process with several device and circulation: shearing, compression, again shearing, again compression.

Description

Grind the mill tube of machinery and stir mill
[technical field]
The present invention relates to grinding of material, be specifically related to a kind of mill tube and stirring mill that grinds machinery.
[background technology]
At present, domestic and international widely used powder processing machinery is a ball mill.Traditional ball mill is to utilize the rotation of ball mill staving that thereby the ball milling subband in the staving is arrived the certain height storage power, impacts the effect that material reaches the material pulverizing thereby form impulsive force in the sub-dropping process of ball milling.This powder preparation method equipment is simple, can obtain the satisfactory powder of granularity by the method for lengthening working time, and its another one characteristics are that batch mixing is even.Its remarkable shortcoming is to take up an area of greatly, the energy consumption height, and production efficiency is low, and powder granularity is thick.
In addition, also have traditional ultra-fine equipment, can be classified as medium mill and no medium mill two big classes.Have to comprise stirring mill and vibromill etc. in the medium mill again, be characterized in the product fineness height, output is big, but process of producing product is discontinuous, and Granularity Distribution is not concentrated.Wherein stir mill and form, adopt disposable feeding intake by shaft, cylindrical shell, disposable discharging after grinding is finished, the material fineness is controlled by milling time.Material can be that slurry also can be a dry powder, shaft drives medium and material rotation, material is tapered in the mode of collision friction mutually with medium in cylindrical shell, but because the initial size of material can not be identical, therefore and cylindrical shell mostly is cylindrical, and the suffered applied stress of material is identical with lapping mode in stirring mill, causes the final size distribution of material can not concentrate on a very little scope, be not owe the mill be exactly overground, can not accurately control size distribution.
[summary of the invention]
Purpose of the present invention is intended to overcome above-mentioned the deficiencies in the prior art, proposes a kind ofly can accurately control size distribution, grinding effect excellence, the powder thinning method that energy consumption is low, the stirring mill that grinds the mill tube of machinery and use described mill tube.
The technical scheme that realizes above-mentioned purpose is: a kind of mill tube that grinds machinery, cylindrical shell is a cylindricality, the rotating shaft of size reduction machinery can be placed in one and stir, cylindrical shell one end is provided with discharging opening, described cylindrical shell is being the rotation gear stage away from one section of discharging opening at least, this section has such structure, each point is incomplete same to the distance at the center that rotating shaft is set on the profile of its cross section of inboard wall, make that the rotation on cross section was in the state of variable motion when powder moved in this section cylindrical shell.
And, a kind of stirring mill, comprise mill tube, transmission mechanism and rotary main shaft, the cylindrical shell of mill tube is a cylindricality, cylindrical shell one end is provided with discharging opening, rotary main shaft along drum shaft to located therein, transmission mechanism can drive rotary main shaft and rotate, described cylindrical shell is being the rotation gear stage away from one section of discharging opening at least, this section has such structure, each point is incomplete same to the distance at the center that rotating shaft is set on the profile of its cross section of inboard wall, makes that the rotation on cross section was in the state of variable motion when powder moved in this section cylindrical shell.
Preferably, the shape of the inwall longitudinal section of described rotation gear stage for increasing gradually to discharging opening direction internal diameter from end away from discharging opening.Further preferably, the inwall longitudinal section of described rotation gear stage is trapezoidal, and it is long base from the near limit of discharging opening.
Preferably, described discharging opening is arranged near the center of body end surface.
Preferably, the cross section of inboard wall of described rotation gear stage is a polygon.Further preferably, described polygon is a regular polygon.More preferably, described regular polygon is a regular hexagon.
Preferably, the inwall at described cylindrical shell middle part is cylindrical, and the part that described cylindrical shell is positioned at discharge port end has such structure, and its cross section of inboard wall is circular, and the longitudinal section is trapezoidal, and it is long base from the near limit of discharging opening.
Adopt technique scheme, beneficial technical effects of the present invention is: 1) mill tube has the rotation gear stage that cross section is a special construction away from the part of discharging opening, when material enters this section of mill tube, because the radius apart from the axle center does not wait in the horizontal direction, thereby linear velocity difference, and have a plurality of linear velocities, make that material rotation in the horizontal direction is a speed-change process, so the suffered stress of material increases, internal tiny crack increases, this structure makes to be sheared, extruding, grindings such as collision mechanism coexists as the different sections of same inner core, in fact be equivalent to shear extrusion, shear the process of lapping of a plurality of circulations of multiple devices of extruding more again, improved grinding efficiency greatly; And being very beneficial for the concentrated distribution of grain diameter, this is the characteristic and the function that do not have of all equipment that grind at present.It mainly is to consider design and make more or less freelyly that the cross section of above-mentioned rotation gear stage is preferably polygon, can realize at lower cost.It mainly is to consider that its symmetry can reduce the unstability that rotation at a high speed brings that described polygonal cross-section is preferably just polygonal.And preferred regular hexagon can produce required a plurality of different linear velocities, guarantees to have enough big inner barrel space again; 2) longitudinal section that further rotates gear stage is set to the shape that increases gradually to discharging opening direction internal diameter from the end away from discharging opening, makes that cylindrical shell internal diameter in the vertical increases gradually, thereby linear velocity increases gradually along with the rising of material; According to centrifugal principle, bulky grain will be in apart from the farthest, center, stressed maximum, and grinding efficiency is the highest; Otherwise fine grained is in apart from the center the most nearby, and grinding efficiency is minimum, this structure helps energy is carried out reasonable distribution, and material motion in the vertical also is a speed-change process, can integrate with the rotation speed-change process, further strengthens the effect of shearing collision.3) discharging opening is arranged near the center of body end surface, because fine grained is in apart from the center the most nearby, superfine powder that therefore can the narrow size distribution of output.4) mill tube is circular near the cross section of discharging opening part inwall; the longitudinal section is trapezoidal for what stand upside down; when material enters this section; because horizontal linear velocity is identical; thereby its grinding mechanism mainly is to shear in the horizontal; collision; material particles is played further finishing effect; grain diameter is concentrated to distribute; because linear velocity difference longitudinally; and linear velocity increases from the bottom up; thereby it is thick; the centrifugal force difference that fine grained is suffered; and because the increase of linear velocity, fine grained can further be concentrated to the center, overflows from discharging opening; thereby it is concentrated to have guaranteed that further material particles distributes, and produces the superfine powder of the narrow size distribution that has preeminent performance.
Below by embodiment also in conjunction with the accompanying drawings, the present invention is described in further detail:
[description of drawings]
Fig. 1 is a kind of longitudinal cutting structure schematic diagram that grinds the mill tube of machinery.
Fig. 2 is that the A-A of Fig. 1 is to cutaway view.
Fig. 3 is that the B-B of Fig. 1 is to cutaway view.
Fig. 4 is that the C-C of Fig. 1 is to cutaway view.
Fig. 5 (a)～(d) is the optional shape schematic diagram of cross section of inboard wall of rotation gear stage.
Fig. 6 (a)～(d) is the optional shape schematic diagram in inwall longitudinal section of rotation gear stage.
Fig. 7 is a kind of stirring mill structural representation.
[specific embodiment]
Embodiment one, a kind of mill tube that grinds machinery, in conjunction with Fig. 1～4, cylindrical shell is a cylindricality, be provided with discharging opening 1 near the end face center of cylindrical shell one end, cylindrical shell comprises three parts of different structure, and it is rotation gear stage 2 away from one section of discharging opening 1, this section has such structure, cross section of inboard wall is a regular hexagon, and the longitudinal section is trapezoidal, is long base from discharging opening 1 near limit 5; The inwall at its middle part 3 is cylindrical; Its part 4 that is positioned at discharge port end has such structure, and cross section of inboard wall is circular, and the longitudinal section is trapezoidal, is long base from discharging opening 1 near limit 6.
In the foregoing description, the profile of the cross section of inboard wall of rotation gear stage 2 also can be that other each points are to the incomplete same shape of the distance at the center that rotating shaft is set, shown in Fig. 5 (a)～(d), just can satisfy requirement of the present invention as long as can make the material that rotates therein have a plurality of different horizontal linear velocity.The inwall longitudinal section of rotation gear stage 2 can be a rectangle, also can be other shapes that increase gradually to discharging opening direction internal diameter from end away from discharging opening, shown in Fig. 6 (a)～(b), these structures are compared with rectangle because of having vertical speed changing function simultaneously thereby having better grinding effect.
Embodiment two, a kind of stirring mill in conjunction with Fig. 7, comprise mill tube 7, transmission mechanism 8 and rotary main shaft 9, described mill tube has the structure among the embodiment one, charging aperture 10 is arranged at an end relative with discharging opening, and to located therein, transmission mechanism 8 drives rotary main shaft 9 and rotates rotary main shaft 8 along drum shaft.
The concrete course of work: material is added the slurry that water is made solid content 70%-75%, send into the charging aperture 10 of cylindrical shell bottom with the pump (not shown), mill tube inside drives the disc (not shown) by rotary main shaft 9 and rotates (1200-3000 rev/min) at a high speed, produce powerful centrifugal shearing force and extrusion and collision power, slip rises to top discharge mouth 1 by the cylindrical shell bottom under certain pressure.
Material is when mill tube bottom 2, because the radius apart from the axle center does not wait on the horizontal direction, thereby the linear velocity difference, and have a plurality of linear velocities; And along with the rising of material, mill tube internal diameter in the vertical increases gradually, thereby linear velocity increases gradually; According to centrifugal principle, bulky grain will be in apart from the farthest, center, stressed maximum, and grinding efficiency is the highest; Otherwise, fine grained is in apart from the center the most nearby, grinding efficiency is minimum, the comprehensively motion of the two, material is in level and vertically all be a speed-change process, and so the suffered stress of material increases, and internal tiny crack increases, make grindings such as shearing, extruding, collision mechanism coexist as the different sections of same inner core, in fact be equivalent to shear extrusion, shear the process of lapping of a plurality of circulations of multiple devices of extruding more again.After material enters mill tube middle part 3 because the linear velocity of vertical and horizontal is identical, thereby its grinding mechanism mainly be shear, collision, material particles is played a kind of finishing effect, grain diameter is concentrated is distributed.When material enters mill tube top 4; because horizontal linear velocity is identical; thereby its grinding mechanism mainly is to shear in the horizontal; collision; material particles is played further finishing effect; grain diameter is concentrated to distribute; because linear velocity difference longitudinally; and linear velocity increases from the bottom up; thereby it is thick; the centrifugal force difference that fine grained is suffered; and because the increase of linear velocity, fine grained can further be concentrated to the center, overflows from discharging opening; thereby it is concentrated to have guaranteed that further material particles distributes, and produces the superfine powder of the narrow size distribution that has preeminent performance.The time decision that the fineness of material to be machined is stopped in mill tube by material, the time of staying can be regulated by the pump speed of pump, and the flow velocity of pump is slow, material holdup time in cylindrical shell is long, and the effect of grinding is all right.
The present invention is in the mode of working continuously, and will pulverize, ultra-fine, batch mixing finishes in same operation, changed traditional batch process, so both simplified production process, cut down the consumption of energy greatly again, and output increases substantially, and product can reach submicron order.
Grind the contrast experiment: get 700 kilograms of 80 purpose heavy calcium carbonate powders, add 300 kilograms in water, add 5.6 kilograms of dispersants (9000 types, Rhom and Hass produces), make the slurry of solid content 70%.Respectively above-mentioned slurry is stirred mill, stirs mill (SX type with the present invention who describes among the embodiment two, Wuxi City is prosperous to be reached powder machinery Co., Ltd and produces), ball mill (MQYG900*900 type, Liming Road ﹠ Bridge Heavy-Duty Industry Co., Ltd., He'nan Prov. produces) grind, and with laser particle size analyzer (JL1001 type, the production of Dandong instrument research institute) size distribution of survey finished product is with the ultra micro thinning effect of expression powder.The result is:
The present invention: continuous feed, continuously discharging is surveyed granularity in the discharging opening sampling, D90＜1.8 μ (D90 represents in the sample diameter of 90% particle), Dmax=3 μ (Dmax represents the diameter of the largest particles in the sample), energy consumption is 170 degree electricity/tons.
Stir mill: disposable feeding intake, start was ground 4 hours continuously, shut down, and took out material, and granularity is surveyed in sampling, D90＜2 μ, Dmax=10 μ, energy consumption is 450 degree electricity/tons.
Ball mill: disposable feeding intake, start was ground 15 hours continuously, shut down, and took out material, and granularity is surveyed in sampling, D90＜75 μ, energy consumption is 110 degree electricity/tons.

Claims (10)

1, a kind of mill tube that grinds machinery, cylindrical shell is a cylindricality, the rotating shaft of size reduction machinery can be placed in one and stir, cylindrical shell one end is provided with discharging opening, it is characterized in that: described cylindrical shell is being the rotation gear stage away from one section of discharging opening at least, and this section has such structure, and each point is incomplete same to the distance at the center that rotating shaft is set on the profile of its cross section of inboard wall, make that the rotation on cross section was in the state of variable motion when powder moved in this section cylindrical shell.
2, the mill tube that grinds machinery according to claim 1 is characterized in that: the shape of the inwall longitudinal section of described rotation gear stage for increasing gradually to discharging opening direction internal diameter from the end away from discharging opening.
3, the mill tube that grinds machinery according to claim 2, it is characterized in that: the inwall longitudinal section of described rotation gear stage is trapezoidal, it is long base from the near limit of discharging opening.
4, according to any described mill tube that grinds machinery of claim 1 to 3, it is characterized in that: described discharging opening is arranged near the center of body end surface.
5, according to any described mill tube that grinds machinery of claim 1 to 4, it is characterized in that: the cross section of inboard wall of described rotation gear stage is a polygon.
6, the mill tube that grinds machinery according to claim 5, it is characterized in that: described polygon is a regular polygon.
7, the mill tube that grinds machinery according to claim 6, it is characterized in that: described regular polygon is a regular hexagon.
8, according to any described mill tube that grinds machinery of claim 1 to 7, it is characterized in that: the inwall at described cylindrical shell middle part is cylindrical, the part that described cylindrical shell is positioned at discharge port end has such structure, its cross section of inboard wall is circular, the longitudinal section is trapezoidal, and it is long base from the near limit of discharging opening.
9, a kind of stirring mill, comprise mill tube, transmission mechanism and rotary main shaft, the cylindrical shell of mill tube is a cylindricality, cylindrical shell one end is provided with discharging opening, rotary main shaft along drum shaft to located therein, transmission mechanism drives rotary main shaft and rotates, it is characterized in that: described cylindrical shell is being the rotation gear stage away from one section of discharging opening at least, this section has such structure, each point is incomplete same to the distance at the center that rotating shaft is set on the profile of its cross section of inboard wall, make that the rotation on cross section was in the state of variable motion when powder moved in this section cylindrical shell.
10, stirring mill according to claim 9 is characterized in that: the shape of the inwall longitudinal section of described rotation gear stage for increasing gradually to discharging opening direction internal diameter from the end away from discharging opening.
CNB2004100815808A 2004-12-22 2004-12-22 Grinding drum and stirring mill of grinding and crushing machinery Active CN1317079C (en)

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Application Number Priority Date Filing Date Title
CNB2004100815808A CN1317079C (en) 2004-12-22 2004-12-22 Grinding drum and stirring mill of grinding and crushing machinery

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CN1669660A true CN1669660A (en) 2005-09-21
CN1317079C CN1317079C (en) 2007-05-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015027765A1 (en) * 2013-08-30 2015-03-05 Xiamen Tungsten Co., Ltd Cathode material of lithium-ion battery and method for making the same
CN113461004A (en) * 2021-06-10 2021-10-01 山东鑫海矿业技术装备股份有限公司 Vertical graphite stripping equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004267A1 (en) * 1985-01-25 1986-07-31 Evans Products Company Shell liner assembly
CN85106019B (en) * 1985-08-27 1987-10-28 赖博尔德-斯特里克股份公司 Annular gap type ball grinder
FR2624763A1 (en) * 1987-12-16 1989-06-23 Bazante Georges Improvements to very fine grinders
CN2195382Y (en) * 1994-04-20 1995-04-26 于小燕 Superfine mill
CN2212448Y (en) * 1994-12-22 1995-11-15 邵仁发 Screw propelling type cone crusher
CN2253247Y (en) * 1995-11-02 1997-04-30 青岛黑鲤石墨工业公司 Vertical ore grinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015027765A1 (en) * 2013-08-30 2015-03-05 Xiamen Tungsten Co., Ltd Cathode material of lithium-ion battery and method for making the same
CN113461004A (en) * 2021-06-10 2021-10-01 山东鑫海矿业技术装备股份有限公司 Vertical graphite stripping equipment
CN113461004B (en) * 2021-06-10 2023-08-04 山东鑫海矿业技术装备股份有限公司 Vertical graphite stripping equipment

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