CN203253535U - Centrifugal classifier - Google Patents
Centrifugal classifier Download PDFInfo
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- CN203253535U CN203253535U CN 201220735211 CN201220735211U CN203253535U CN 203253535 U CN203253535 U CN 203253535U CN 201220735211 CN201220735211 CN 201220735211 CN 201220735211 U CN201220735211 U CN 201220735211U CN 203253535 U CN203253535 U CN 203253535U
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- separation hood
- centrifugal classifier
- cavity
- centrifugal classification
- classification according
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Abstract
The utility model relates to a classifying device, in particular to a centrifugal classifier which at least comprises a centrifugal classifier body, a feeding pipe, a discharging pipe, a sand draining opening, a discharging device, an impeller, an air intake opening, a hood, a motor, an end cover and a revolving shaft. The centrifugal classifier is characterized in that the upper portion of the centrifugal classifier body is connected with the end cover. A separation hood is fixed at the upper end of a hollow cavity in the centrifugal classifier body and connected with one end of the discharging pipe. The other end of the discharging pipe extends outside the centrifugal classifier body. The feeding pipe is fixed on a side portion of the centrifugal classifier body. The motor is fixed on the upper portion of the centrifugal classifier body and is in transmission connection with the impeller through the revolving shaft. The revolving shaft extends into the centrifugal classifier body and is coaxial with the centrifugal classifier body. The impeller is arranged at the lower end of the separation hood. The revolving shaft is sleeved with a sleeve in a connected mode. The air intake opening is formed in the side wall, arranged in the separation hood, of the sleeve. The bottom of the centrifugal classifier is connected with the discharging device. The lower end of the discharging device is connected with the sand draining opening. The centrifugal classifier has the advantages of being high in classifying efficiency, confirmative in classifying grain size, stable in classifying effect, capable of adjusting classifying grain size, saving in energy and resistant to abrasion.
Description
Technical field
The utility model relates to a kind of classifying equipoment, particularly a kind of centrifugal classifying that uses when the two-phase in liquid, solid, the gas or three-phase mixture are carried out classification by the size of granular size, proportion.
Background technology
In the mine, the industries such as oil, environmental protection, chemical industry, mixture slurry (gas that perhaps contains solid) need to carry out detached job with classifying equipoment, normally with cyclone or cyclone dust collectors carry out slightly, subfractionation or gas, the solid separation.Normally support the use with cyclone and ball mill in the mine, consist of together ore grinding-classification closed circuit circulatory system.
The shortcoming of existing cyclone classification is: (1) classification efficiency is low, usually only has 30%～40%, and the fluidised form of classification is complicated, disorderly, slightly, carefully mutually mix more, thereby, in lower one technique---during ore grinding, the result who causes caused pulverizing, and mineral processing index is descended.(2) Cut size is uncertain, and fluctuation range is very large.(3) needs and pump cooperate, and energy consumption is high.Be fit to fine fraction, serious wear during the coarse granule classification.(4) instability of flow after the classification is subjected to the feed flow effect large.(5) serious wear, especially cyclone sediment outflow mouth have a strong impact on grading effect after the wearing and tearing.(6) idle work consumes highly, has about 50% energy to be consumed by useless air column, and (7) have that 15% ~ 30% fluid is not classified to be fed directly to out the interruption-forming short-circuit flow through import.It is good now to be badly in need of a kind of grading effect, and Cut size is determined, the classifying equipoment of stability of flow.
Summary of the invention
The purpose of this utility model is to overcome when using cyclone or cyclone dust collectors classification in the background technology, and classification efficiency is low, Cut size is uncertain, the problem of instability of flow.Provide a kind of have classification efficiency height, Cut size determine, grading effect stable, Cut size is large and small can regulate, and energy-conservation, wear-resisting centrifugal classifying.
The technical scheme that its technical problem of solving the utility model adopts is: a kind of centrifugal classification mechanism, which comprises at least body, feed pipe, discharge nozzle, sand removing hole, removal device, impeller, air inlet, cover, motor, end cap and rotating shaft, it is characterized in that: the top of body is connected with end cap, the hollow cavity upper end of body interior is fixed with separation hood, separation hood is connected with an end of discharge nozzle, it is external that the other end of discharge nozzle extends to, and the body sidepiece also is fixed with feed pipe; Body top is fixed with motor, motor is connected with impeller by rotating shaft transmission, rotating shaft extends to body interior and coaxial with body, impeller places the separation hood lower end, rotating shaft is socketed with sleeve outward, sleeve is positioned on the sidewall of separation hood and has air inlet, and the body bottom is connected with removal device, and the removal device lower end connects sand removing hole.
Described body is the hollow cavity structure that is formed by connecting by cylindrical cavity and these two parts of coniform cavity, the wherein lower end of cylindrical cavity and isometrical being fixedly connected with of coniform cavity large end face, and removal device is connected to the small end face place of the coniform cavity of body.
The height of column of described body and cone aspect ratio are between 1:0.1 ~ 1:10, diameter and post are high than between 1:0.1 ~ 1:10.
The cone angle of the coniform cavity of described body bottom is 60
0～5 °.
Described body is vertical structure, and simultaneously feed pipe is fixing along the involute-tangential direction of body sidepiece upper end, feed pipe up and down along level height all be not higher than separation hood up and down along level height, be positioned at the position among the upper and lower edge of separation hood.
Described feed pipe passes the body sidewall and extends in the body, and finally is communicated with sleeve.
Described separation hood is fixedly connected on edge under the end cap on body top, and concentric with the hollow cavity of body interior.
Described separation hood is conical structure, and is a streamlined cavity cone, is distributed with some apertures or atresia on the tapered sidewalls of separation hood.
Described removal device is rotatably connected to the sediment outflow rotor in cylindrical cavity, spigot is comprised of sand removing hole and special-purpose sand removing device two parts.
The beneficial effects of the utility model are: 1, classification efficiency is up to 60%～80%; 2, Cut size is determined, Cut size is large and small can be regulated as required; 3, energy-conservation, greatly reduce supporting pump lift, also gradable without pressure; 4, can without the pressure self-priming, make things convenient for the equipment configuration; 5, low cruise, the following current classification, wear-resistant; 6, stable and reliable operation.
Incoming flow need under the stirring of impeller, realize complete swirling motion to lower eddy flow behind the circulation of separation hood outside, and after thickness was separated, coarse grain was downward, discharges from spigot.Particulate is discharged from the discharge nozzle of separation hood inside because of energy shortage.The blocking-up of separation hood incoming flow directly enter the formed short-circuit flow of overflow pipe.Reduced thickness and mixed, thereby improved the classification efficiency of material, classification efficiency is high.
The design's underflow sand setting adopts special-purpose mechanical sand removing device, automatic stabilisation sediment outflow.Sediment outflow speed is adjustable.Feed has pressure all can without pressure.Can realize the effect of stable cyclonic separation.
When using in the mine, the adding floating agent can make valuable mineral float and enter overflow, reduced pulverizing.
Description of drawings
Below in conjunction with specific embodiments and the drawings the utility model is further specified.
Fig. 1 is the utility model example structure schematic diagram.
Among the figure: 1, body; 2, rotating shaft; 3, impeller; 4, sleeve; 5, motor; 6, removal device; 7, sand removing hole; 8, air inlet; 9, discharge nozzle; 10, feed pipe; 11, end cap; 12, separation hood.
The specific embodiment
Shown in this centrifugal classifying structural representation of Fig. 1, which comprises at least body 1, feed pipe 10, discharge nozzle 9, sand removing hole 7, removal device 6, impeller 3, air inlet 8, cover 12, motor 5, end cap 11 and rotating shaft 2.
The specific works process of this centrifugal classifying is: mixed material (two or three mixture among liquid, solid, the gas three) is squeezed in the body 1 by feed pipe with sand pump (gas blower fan), it is interior rear along top cylindrical column High Rotation Speed that slurry enters body 1, the energy of somaplasm is constantly consumed, scarce capacity, got rid of makeup energy by impeller, again be graded.The coarse granule of slurry (or gas) middle and high concentration moves to the bottom, enters in the removal device 6 in the body 1 lower cone body, enters sand removing hole 7 through removal device 6 again and discharges, and feeds next process; Fine grained in the ore pulp (perhaps gas) is because energy is less, in rotary course, move to cylinder central rotating shaft 2 positions, because pressure differential fine grained and water move in the separation hood 12 on main center top together, and finally discharge from the discharge nozzle 9 of separation hood 12 sidepieces, finish classification.
This centrifugal classifying has been strengthened classification process owing to increased the impeller makeup energy, makes the centrifugal classification process more thorough; Also add separation hood 12 on top, simultaneously on the separation hood 12 some apertures that are evenly arranged are arranged, so ore pulp pressure enters body 1 when interior, unassorted raw ore slurry can not enter in the separation hood and classified fine fraction thin pulp mixes.Stop raw ore slurry to enter overfall by feed port and directly discharged " short circuit " that causes; Separation hood has stoped a part of coarse grain because turbulent eddy flow enters particulate district, center, causes coarse grain to sneak into particulate; The flow of slurry that the part medium grain arranged in the general grader makes progress first, more outwards, downwards, upwards circulate connecing paracentral position again, is called as " interior circulation ", and energy is by useless consumption.In the utility model, there has not been air column, interior circulation does not just exist yet; Underflow adopts the material discharging machine discharging, and classification process can be controlled, and simultaneously, prevents that air from entering the eddy flow district from underflow opening.
This form that feed pipe 10 is arranged along involute-tangential direction need to be squeezed into mixed material in the body 1 with sand pump, during the material scarce capacity, has been got rid of makeup energy by impeller 3, again is graded.
Feed pipe 10 among the embodiment 1 also can pass body 1 sidewall and extend in the body 1, and sleeve 4 final and outside the rotating shaft 2 is communicated with.Rotate by motor 5 drives impeller 3, slurry can enter under the feed force less than 0.06Mpa in the sleeve 4, and under the rotation of impeller 3 in the cylindrical column of body 1 High Rotation Speed, realize the classification of slurry (perhaps gas), fine fraction, water, gas enter sleeve 4 and then can enter in the body 1 by air inlet 8 after interior.
Since this centrifugal classifying under less pressure, give the ore deposit (operation of 0.01 mpa＜p＜0.16mpa), perhaps enter without the pressure self-priming, swirl velocity is lower, thereby has reduced petty damage, has also reduced energy loss.When improving classification efficiency, also reach energy-conservation purpose, without interior circulation, without ore pulp " short circuit ", operate steadily.Be suitable for more coarse grained classification.Classification is reliable and stable, and classification efficiency is high, and Cut size can be regulated.
The height of column of body 1 and cone aspect ratio are between 1:0.1 ~ 1:10, diameter and post are high than between 1:0.1 ~ 1:10, and the raw material of classification and classification require the adjusting ratio as required.The cone angle of the coniform cavity of body 1 bottom is 60
0～5 °.
The parts that present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not one by one narration.
Claims (9)
1. centrifugal classification mechanism, which comprises at least body (1), feed pipe (10), discharge nozzle (9), sand removing hole (7), removal device (6), impeller (3), air inlet (8), cover (12), motor (5), end cap (11) and rotating shaft (2), it is characterized in that: the top of body (1) is connected with end cap (11), the inner hollow cavity upper end of body (1) is fixed with separation hood (12), separation hood (12) is connected with an end of discharge nozzle (9), the other end of discharge nozzle (9) extends to outside the body (1), and body (1) sidepiece also is fixed with feed pipe (10); Body (1) top is fixed with motor (5), motor (5) is connected with impeller (3) by rotating shaft (2), it is inner and coaxial with body (1) that rotating shaft (2) extends to body (1), impeller (3) places separation hood (12) lower end, the outer sleeve (4) that is socketed with of rotating shaft (2), sleeve (4) is positioned on the sidewall of separation hood (12) and has air inlet (8), and body (1) bottom is connected with removal device (6), and removal device (6) lower end connects sand removing hole (7).
2. a kind of centrifugal classification according to claim 1 mechanism, it is characterized in that: described body (1) is the hollow cavity structure that is formed by connecting by cylindrical cavity and these two parts of coniform cavity, the wherein lower end of cylindrical cavity and isometrical being fixedly connected with of coniform cavity large end face, removal device (6) is connected to the small end face place of the coniform cavity of body (1).
3. a kind of centrifugal classification according to claim 2 mechanism is characterized in that: the height of column of described body (1) and cone aspect ratio are between 1:0.1 ~ 1:10, diameter and post are high than between 1:0.1 ~ 1:10.
4. a kind of centrifugal classification according to claim 2 mechanism, it is characterized in that: the cone angle of the coniform cavity of described body (1) bottom is 60
0～5 °.
5. a kind of centrifugal classification according to claim 1 mechanism, it is characterized in that: described body (1) is vertical structure, feed pipe (10) is fixed along the involute-tangential direction of body (1) sidepiece upper end simultaneously, feed pipe (10) up and down along level height all be not higher than separation hood (12) up and down along level height, be positioned at the position among the upper and lower edge of separation hood (12).
6. a kind of centrifugal classification according to claim 1 mechanism, it is characterized in that: described feed pipe (10) passes body (1) sidewall and extends in the body (1), and finally is communicated with sleeve (4).
7. a kind of centrifugal classification according to claim 1 mechanism, it is characterized in that: described separation hood (12) is fixedly connected on the lower edge of end cap (11) on body (1) top, and concentric with the inner hollow cavity of body (1).
8. a kind of centrifugal classification according to claim 1 mechanism, it is characterized in that: described separation hood (12) is conical structure, and is a streamlined cavity cone, is distributed with some apertures or atresia on the tapered sidewalls of separation hood (12).
9. a kind of centrifugal classification according to claim 1 mechanism, it is characterized in that: described removal device (6) is rotatably connected to the sediment outflow rotor in cylindrical cavity, and spigot (7) is comprised of sand removing hole and special-purpose sand removing device two parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735211 CN203253535U (en) | 2012-12-28 | 2012-12-28 | Centrifugal classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735211 CN203253535U (en) | 2012-12-28 | 2012-12-28 | Centrifugal classifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203253535U true CN203253535U (en) | 2013-10-30 |
Family
ID=49466144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220735211 Expired - Fee Related CN203253535U (en) | 2012-12-28 | 2012-12-28 | Centrifugal classifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203253535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028497A (en) * | 2012-12-28 | 2013-04-10 | 刘晔 | Centrifugal classifier |
-
2012
- 2012-12-28 CN CN 201220735211 patent/CN203253535U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028497A (en) * | 2012-12-28 | 2013-04-10 | 刘晔 | Centrifugal classifier |
| CN103028497B (en) * | 2012-12-28 | 2015-08-19 | 刘晔 | A kind of centrifugal classifying |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |