CN207446517U - Decanter centrifuge - Google Patents
Decanter centrifuge Download PDFInfo
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- CN207446517U CN207446517U CN201721204246.6U CN201721204246U CN207446517U CN 207446517 U CN207446517 U CN 207446517U CN 201721204246 U CN201721204246 U CN 201721204246U CN 207446517 U CN207446517 U CN 207446517U
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Abstract
The utility model provides a kind of decanter centrifuge, including：Rack (1), hood (2), rotary drum (3), main motor (4), auxiliary motor (5), differential mechanism (6) and the auger conveyor in rotary drum inner cavity；Hood is fixed in rack, and rotary drum is arranged in hood；Main motor controls drum rotating, and auxiliary motor is rotated by differential controls auger conveyor；Rotary drum is located at dry section (31) equipped with solid phase floss hole (33), and liquid phase floss hole (34) is equipped in decanting zone (32)；Auger conveyor includes：Main body (71) and the first helical blade (72)；In main body and in feed zone, equipped with material inlet (16) to be separated；The second helical blade (73) is equipped in main body and in dry section to the region of material inlet.By improving the helical blade structure in decanter centrifuge, to reduce the foam in liquid phase, while the circulation of liquid phase is not influenced, improve the work efficiency of decanter centrifuge.
Description
Technical field
The utility model is related to mechanical equipment technical field more particularly to a kind of sleeping spiral shell centrifugations for possessing double helix blade
Machine.
Background technology
Decanter centrifuge of the prior art is by rack, hood, base bearing, rotary drum, spiral, differential mechanism, drive system, control
The compositions such as system processed and safety system, can continuous feed, separation, washing and discharging.Be widely used in chemical industry, light industry, pharmacy,
The industries such as food, environmental protection.Its operation principle is：Rotary drum is rotated with spiral with certain differential same-directional high-speed, and material is connected by feed pipe
Continuous to introduce conveying spiral inner cylinder, into rotary drum after acceleration, under effect of centrifugal force, heavier solid formation is deposited on rotatory drum wall
Form sediment layer.The solid formation of deposition is continuously pushed into rotary drum tapered end by conveying spiral, through slag-drip opening discharge machine outside.It is relatively light
Liquid phase object then form internal layer pendular ring, rotary drum is continuously overflowed by rotary drum big end overflow port, through leakage fluid dram discharge machine outside.
When decanter centrifuge works, it is necessary to reduce sediment moisture as far as possible, the mode of increase rotary drum semi-cone angle is generally taken,
But when cone angle is big, sediment is big in the centrifugation component generated along rotary drum cone generatrices direction, and direction and deslagging direction on the contrary,
So that sediment deslagging resistance is big, while it can also increase the rate of depreciation of spiral pusher torque and helical blade.It is special for some
The softer viscous material (the albumen sediment in such as CN201410122849.6) of quality, it is heavy that above-mentioned phenomenon can cause to isolate
Slag can be returned in rotary drum cavity again, mixed in decanting zone with the material entered, and a part is taken away by clarified solution, extreme influence separation
Effect and solid phase yield.And defeated slag ability can be improved by increasing screw pitch, helix angle also increases therewith, although at this time theoretically
Conveying capacity is big, but also causes deslagging difficult easily with respect to slip between helical blade and sediment.Although it at this point, can reduce
Helix angle still can reduce bed drain purge again.
Utility model content
The technical problem to be solved by the utility model is to provide one kind and possess double helix in view of the deficiencies of the prior art
The decanter centrifuge of blade to reduce the foam in liquid phase, while does not influence the circulation of liquid phase, improves the work of decanter centrifuge
Make efficiency.
Technical problem to be solved in the utility model is achieved by the following technical solution：
The utility model provides a kind of decanter centrifuge, including：Rack, hood, rotary drum, main motor, auxiliary motor, differential mechanism
And the auger conveyor in the rotary drum inner cavity；Wherein, the hood is fixed in the rack, and the rotary drum is set
In the hood；Drum rotating described in the main motor output dynamic Control, the power of the auxiliary motor output pass through differential
Device controls the auger conveyor rotation；The rotary drum includes dry section, feed zone and decanting zone successively, in the rotary drum and
Solid phase floss hole is equipped with positioned at one end of the dry section, liquid phase is equipped in the rotary drum and positioned at one end of the decanting zone
Floss hole；The auger conveyor includes：The first helical blade of main body and setting on the body；On the body
And in feed zone, equipped with material inlet to be separated；On the body and positioned at the dry section to the material
The second helical blade is equipped in the region of entrance
Preferably, second helical blade is arranged at the region between the solid phase floss hole and the material inlet
It is interior.
Preferably, first helical blade and second helical blade are all varying pitch or uniform pitch, and described
One helical blade is identical with the conical spiral of second helical blade.
Preferably, the angle of the helix angle of first helical blade and second helical blade is：4°-15°.
Preferably, the thickness of first helical blade and second helical blade is：4mm-10mm.
Preferably, the angle of the semi-cone angle of the rotary drum tapered end is：8°-15°.
Preferably, the gap of first helical blade and second helical blade and the drum inner wall is：
0.5mm-2mm。
Preferably, the material of the rotary drum, the main body, first helical blade and second helical blade is not
Become rusty steel.
The beneficial effects of the utility model are, by improving the helical blade structure in decanter centrifuge, increase spiral shell
The thrust and discharge velocity of the vane piece viscous material sediment material softer to quality have been reduced or avoided since sediment is by edge turn
The deslagging for rousing the centrifugation component that cone generatrices direction generates and generating is obstructed the problem of low with yield, while slows down than single thread
The abrasion of discharge end blade, improves service life.
The technical solution of the utility model is described in detail in the following with reference to the drawings and specific embodiments.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model decanter centrifuge；
Fig. 2 be in Fig. 1 helical blade A-A to cross-sectional structure schematic diagram；
Fig. 3 position relationship enlarged drawings between part helix blade and rotary drum.
Specific embodiment
Fig. 1 is the overall structure diagram of the utility model decanter centrifuge.As shown in Figure 1, the utility model provides one
Kind decanter centrifuge, a kind of decanter centrifuge, including：Rack 1, hood 2, rotary drum 3, main motor 4, auxiliary motor 5, differential mechanism 6 with
And the auger conveyor in 3 inner cavity of rotary drum；Wherein, the hood 2 is fixed in the rack 1, and the rotary drum 3 is set
It puts in the hood 2；Rotary drum 3 described in the output of main motor 4 dynamic Control rotates, and the power that the auxiliary motor 5 exports leads to
Crossing differential mechanism 6 controls the auger conveyor to rotate；The rotary drum 3 includes dry section 31, feed zone 35 and decanting zone 32 successively,
Solid phase floss hole 33 is equipped in the rotary drum 3 and positioned at one end of the dry section 31, in the rotary drum 3 and positioned at described
One end of decanting zone 32 is equipped with liquid phase floss hole 34；The auger conveyor includes：Main body 71 and it is arranged on the main body 71
On the first helical blade 72；In the main body 71 and in feed zone 35, equipped with material inlet 16 to be separated；Value
It obtains one to be mentioned that, be asked in order to which sediment is overcome to be obstructed by the deslagging for being centrifuged component along 3 cone generatrices direction generation of rotary drum and being generated
Topic is equipped with the second helical blade in the main body 71 and in the dry section 31 to the region of the material inlet 16
73, certainly, in order to reach better separating effect, second helical blade 73 be arranged at the solid phase floss hole 33 with it is described
In region between material inlet 16.First helical blade 72 and second helical blade, 73 excircle configuration line with it is described
3 inner wall of rotary drum is parallel, further says, first helical blade 72 and second helical blade, 73 excircle configuration line and institute
The inner wall for stating 3 tapered end of rotary drum and cylindrical end is parallel.
Fig. 2 is that for helical blade A-A to cross-sectional structure schematic diagram, Fig. 3 is the meta position of part helix blade and rotary drum in Fig. 1
Put relation enlarged drawing.If Fig. 2-Fig. 3 is simultaneously refering to what is shown in Fig. 1, the decanter centrifuge of the utility model, which is suitable for sediment viscosity, is more than 4
×104CP, hardness are more than the material of 1000g.When decanter centrifuge works, in order to increase, helical blade is softer to quality to be glued
The property thrust of material sediment material and the effect of discharge velocity, first helical blade 72 and second helical blade 73
The angle of helix angle Φ is：4°-15°；The thickness of first helical blade 72 and second helical blade 73 is：4mm-
10mm；The angle of the semi-cone angle α of 3 tapered end of rotary drum is：8°-15°；First helical blade 72 and second helical-blade
Piece 73 and the gap delta of 3 inner wall of rotary drum are：0.5mm-2mm.The rotary drum 3, the main body 71, first helical blade
72 and second helical blade 73 material for stainless steel, preferably, first helical blade 72 and second spiral
The material of blade 73 is 316 stainless steels or two phase stainless steel.
Operation principle：
Referring again to shown in Fig. 1-Fig. 3, solidliquid mixture directly squeezes into high-speed rotating feed cavity, institute by feed pipe 8
Solidliquid mixture is stated under high-speed rotating state, is got rid of by material inlet 16 on the inner wall for splashing rotary drum 3, high-speed rotating turn
Drum 3, which generates powerful centrifugal force the solid phase particles bigger than density of liquid phase are got rid of, to be attached on 3 inner wall of rotary drum, formed solid layer (because
Ring-type, referred to as circular layer admittedly)；For liquid phase since density is smaller, centrifugal force is small, therefore liquid level can only be formed on the inside of solid circular layer, claims
For pendular ring layer.Since auger conveyor is different with the rotating speed of rotary drum 3, the two utilizes spiral shell there are relative motion (i.e. speed discrepancy)
The relative motion of rotation follower and rotary drum 3 is slowly pushed to the solid formation of solid circular layer the dry section 31 of rotary drum 3, and from solid phase
Floss hole 33 is discharged.The utility model uses and adds second in the solid phase floss hole 33 to the region of the material inlet 16
Helical blade 73, reduce under the helix angle of setting with it is interlobate it is opposite slide, and in the first helical blade 72 and the
It quickly discharges under the promotion of two helical blades 73 and from solid phase floss hole 33, moisture can be controlled greatly to avoid again well
Generation of the sediment to feed zone and decanting zone air-teturning mixed phenomenon in decanting zone, so as to improve sediment yield.
More than content describes the parameters numberical range of decanter centrifuge in the utility model, in the examples below
(the separation factor=(ω of separation factor 2000 will be listed in2R)/g, wherein ω are angular speed, and R is rotary drum radius), difference turns at 4 turns
Under the conditions of, with reference to any number is taken in above-mentioned numberical range, the experimental result for the corn pulp that solid content is 36%-50% is separated,
To illustrate every optimized parameter of the decanter centrifuge of the utility model.
Embodiment one
Charging：40% solid content corn pulp；
Helix angle Φ：8°；
Tapered end helical-blade the piece number：2；
Vane thickness：4mm；
Semi-cone angle α：15°；
Helical blade and drum inner wall gap delta：1mm；
Obtained sediment object：Viscosity：6.1×104CP,
Hardness：1687g；
Solid content：52%；
Yield：85%.
Embodiment two
Charging：45% solid content corn pulp；
Helix angle Φ：15°；
Tapered end helical-blade the piece number：2；
Vane thickness：8mm；
Semi-cone angle α：13°；
Helical blade and drum inner wall gap delta：1mm；
Obtained sediment object：Viscosity：5.5×104CP,
Hardness：1000g；
Solid content：55%；
Yield：75%.
Embodiment three
Charging：36% solid content corn pulp；
Helix angle Φ：4°；
Tapered end helical-blade the piece number：2；
Vane thickness：8mm；
Semi-cone angle α：15°；
Helical blade and drum inner wall gap delta：0.5mm；
Obtained sediment object：Viscosity：4.0×104CP,
Hardness：3590g；
Solid content：53%；
Yield：81%.
Example IV
Charging：50% solid content corn pulp；
Helix angle Φ：8°；
Tapered end helical-blade the piece number：2；
Vane thickness：10mm；
Semi-cone angle α：11°；
Helical blade and drum inner wall gap delta：2mm；
Obtained sediment object：Viscosity：6.7×104CP,
Hardness：2341g；
Solid content：53%；
Yield：90%.
Embodiment five
Charging：45% solid content corn pulp；
Helix angle Φ：4°；
Tapered end helical-blade the piece number：2；
Vane thickness：4mm；
Semi-cone angle α：11°；
Helical blade and drum inner wall gap delta：1mm；
Obtained sediment object：Viscosity：7.5×104CP,
Hardness：4100g；
Solid content：51%；
Yield：92%.
Embodiment six
Charging：45% solid content corn pulp；
Helix angle Φ：10°；
Tapered end helical-blade the piece number：2；
Vane thickness：5mm；
Semi-cone angle α：11°；
Helical blade and drum inner wall gap delta：1mm；
Obtained sediment object：Viscosity：5.8×104CP,
Hardness：1423g；
Solid content：53%；
Yield：81%.
Embodiment seven
Charging：45% solid content corn pulp；
Helix angle Φ：10°；
Tapered end helical-blade the piece number：2；
Vane thickness：4mm；
Semi-cone angle α：8°；
Helical blade and drum inner wall gap delta：1mm；
Obtained sediment object：Viscosity：6.0×104CP,
Hardness：1417g；
Solid content：55%；
Yield：84%.
Embodiment eight
Charging：50% solid content corn pulp；
Helix angle Φ：8°；
Tapered end helical-blade the piece number：1；
Vane thickness：10mm；
Semi-cone angle α：11°；
Helical blade and drum inner wall gap delta：2mm；
Obtained sediment object：Viscosity：6.4×104CP,
Hardness：2789g；
Solid content：55%；
Yield：41%.
Embodiment nine
Charging：40% solid content corn pulp；
Helix angle Φ：20°；
Tapered end helical-blade the piece number：2；
Vane thickness：4mm；
Semi-cone angle α：16°；
Helical blade and drum inner wall gap delta：1mm；
Obtained sediment object：Viscosity：6.0×104CP,
Hardness：1589g；
Solid content：Nothing；
Yield：0%.
Obtained sediment object viscosity measurement uses Brookfield LVDV-II viscosimeters in above-described embodiment, will be to be measured
100g sediment sample mixed liquors are put into 100mL beakers or conical flask (liquid level need to not pop one's head in graduation mark), and speed is adjusted to 100%,
Unit cP (mPa*s) after number of degrees stabilization, records reading.Determination of Hardness uses SMS companies of Britain Texture instrument TA-XT Plus,
Test uses probe HDP/SR, 20 ± 2 DEG C of sample temperature.Pedestal is filled sample, sample upper level with spoon before test
It is concordant with the holding of base container upper surface.Speed 10mm/s, finding speed before Compression patterns, survey are used during test
Speed 10mm/s after 2mm/s, survey, 80% strain take maximum hardness.
Result of the test in above-described embodiment, when first helical blade 72 and second helical blade 73
The angle of helix angle is：4°-10°；The thickness of first helical blade 72 and second helical blade 73 is：5mm-
8mm；The angle of the semi-cone angle of 3 tapered end of rotary drum is：8°-15°；First helical blade 72 and second helical blade
73 are with the gap of 3 inner wall of rotary drum：During 0.5mm-1mm, obtained sediment and moisture obtain rate highest, that is to say, that on
State the optimized parameter that parameter is the utility model.
In conclusion the decanter centrifuge of the utility model is suitable for the softer viscous material of quality, jade is particularly suitable for
The separation of solid and liquid of Rice ＆ peanut milk.The utility model increases tapered end spiral head number, controls blade and rotary drum by reducing helical blade lift angle
Gap and reach reduction or avoid since sediment is by the deslagging for being centrifuged component along the direction generation of rotary drum cone generatrices and being generated
It is obstructed the problem of low with yield, while the abrasion of discharge end blade is slowed down than single thread, improve service life.In addition,
The structure difficulty of processing of the utility model is not high, and assembling is easy, is readily disassembled and safeguards.
Claims (8)
1. a kind of decanter centrifuge, including：Rack (1), hood (2), rotary drum (3), main motor (4), auxiliary motor (5), differential mechanism
(6) and the auger conveyor in the rotary drum (3) inner cavity；Wherein, the hood (2) is fixed in the rack (1),
The rotary drum (3) is arranged in the hood (2)；Rotary drum (3) rotation described in main motor (4) the output dynamic Control, it is described
The power of auxiliary motor (5) output controls the auger conveyor to rotate by differential mechanism (6)；
It is characterized in that, the rotary drum (3) includes dry section (31), feed zone (35) and decanting zone (32) successively, at described turn
It rouses (3) and is equipped with solid phase floss hole (33) positioned at one end of the dry section (31), in the rotary drum (3) and positioned at described
One end of decanting zone (32) is equipped with liquid phase floss hole (34)；
The auger conveyor includes：Main body (71) and the first helical blade (72) being arranged in the main body (71)；
On the main body (71) and in feed zone (35), equipped with material inlet (16) to be separated；In the main body (71)
And the second helical blade (73) is equipped in the region of the dry section (31) to the material inlet (16).
2. decanter centrifuge as described in claim 1, which is characterized in that second helical blade (73) is arranged at described solid
In region between phase floss hole (33) and the material inlet (16).
3. decanter centrifuge as described in claim 1, which is characterized in that first helical blade (72) and second spiral shell
Vane piece (73) is all varying pitch or uniform pitch, and the circle of first helical blade (72) and second helical blade (73)
It is identical to bore helix.
4. decanter centrifuge as described in claim 1, which is characterized in that first helical blade (72) and second spiral shell
The angle of the helix angle of vane piece (73) is：4°-15°.
5. decanter centrifuge as described in claim 1, which is characterized in that first helical blade (72) and second spiral shell
The thickness of vane piece (73) is：4mm-10mm.
6. decanter centrifuge as described in claim 1, which is characterized in that the angle of the semi-cone angle of rotary drum (3) tapered end is：
8°-15°。
7. decanter centrifuge as described in claim 1, which is characterized in that first helical blade (72) and second spiral shell
Vane piece (73) and the gap of the rotary drum (3) inner wall are：0.5mm-2mm.
8. such as claim 1-7 any one of them decanter centrifuges, which is characterized in that the rotary drum (3), the main body
(71), the material of first helical blade (72) and second helical blade (73) is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721204246.6U CN207446517U (en) | 2017-09-19 | 2017-09-19 | Decanter centrifuge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721204246.6U CN207446517U (en) | 2017-09-19 | 2017-09-19 | Decanter centrifuge |
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| Publication Number | Publication Date |
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| CN207446517U true CN207446517U (en) | 2018-06-05 |
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ID=62283341
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| CN201721204246.6U Active CN207446517U (en) | 2017-09-19 | 2017-09-19 | Decanter centrifuge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252524A (en) * | 2019-05-10 | 2019-09-20 | 浙江工业大学 | A kind of decanter centrifuge circumferential accelerating type material dispensing room |
| CN117861875A (en) * | 2024-03-12 | 2024-04-12 | 菏泽学院 | Centrifugal equipment is used in preparation of plant growth regulator |
-
2017
- 2017-09-19 CN CN201721204246.6U patent/CN207446517U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252524A (en) * | 2019-05-10 | 2019-09-20 | 浙江工业大学 | A kind of decanter centrifuge circumferential accelerating type material dispensing room |
| CN110252524B (en) * | 2019-05-10 | 2024-06-11 | 浙江工业大学 | Circumferential acceleration type material distribution chamber for horizontal decanter centrifuge |
| CN117861875A (en) * | 2024-03-12 | 2024-04-12 | 菏泽学院 | Centrifugal equipment is used in preparation of plant growth regulator |
| CN117861875B (en) * | 2024-03-12 | 2024-05-17 | 菏泽学院 | Centrifugal equipment is used in preparation of plant growth regulator |
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