CN207025842U - Sorting unit and there is its screening installation - Google Patents

Abstract

The utility model discloses a kind of sorting unit and there is its screening installation.Sorting unit includes：Body, separation chamber is limited in the body, the body is provided with feeding mouth, the first discharging opening and the second discharging opening connected respectively with the separation chamber, first discharging opening is located at the bottom of the separation chamber, second discharging opening is located at the top of the separation chamber, wherein, the separation chamber includes the Duo Gezi separation chamber for being arranged side by side and communicating with each other successively along the vertical direction, and each sub- separation chamber is respectively provided with the import suitable for connection separating medium source.According to sorting unit of the present utility model, by making every Ge Zi separation chamber be respectively provided with the import suitable for connection separating medium source, so that the separating medium flow velocity in separation chamber is more uniform, the material particles of different densities vibrate more abundant in the presence of separating medium, thus sharpness of separation and the efficiency of separation are improved, and the adaptability of sorting unit is good, goes for the sorting of the granule materials of greater density scope.

Description

Sorting unit and there is its screening installation

Technical field

It the utility model is related to material sorting field, and in particular to a kind of sorting unit and the sorting with the sorting unit Equipment.

Background technology

Sorting for different densities granulate mixture is typically sorted using separating mediums such as air-flow or current, different The material particles of density will vibrate layering under air-flow or flow action, realize and effectively divide by leading of material density difference Choosing.

There is the problem of skewness in air-flow in sorting unit or flow rate of water flow in correlation technique, for example, working as gas When stream or current are passed through by the bottom of sorting unit, during being flowed from bottom to top with air-flow or current, air-flow or water The flow velocity of stream will be reduced gradually, and it is low to thereby result in sharpness of separation and the efficiency of separation of sorting unit, and bad adaptability.

Utility model content

The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality With a kind of sorting unit of new proposition, the sorting unit is by making every Ge Zi separation chamber be respectively provided with suitable for connection separating medium source Import so that the separating medium flow velocity in separation chamber is more uniform, thus improves sharpness of separation and the efficiency of separation, and sort dress The adaptability put is good, goes for the sorting of the granule materials of greater density scope.

The utility model also proposes a kind of screening installation with above-mentioned sorting unit.

According to the sorting unit of the utility model first aspect embodiment, including：Body, sorting is limited in the body Room, the body are provided with the feeding mouth, the first discharging opening and the second discharging opening that are connected respectively with the separation chamber, and described first Discharging opening is located at the bottom of the separation chamber, and second discharging opening is located at the top of the separation chamber, wherein, the separation chamber Including the Duo Gezi separation chamber for being arranged side by side and communicating with each other successively along the vertical direction, each sub- separation chamber, which is respectively provided with, to be suitable to Connect the import in separating medium source.

According to the sorting unit of the utility model embodiment, it is situated between by being respectively provided with every Ge Zi separation chamber suitable for connection sorting The import in matter source so that the separating medium flow velocity in separation chamber is more uniform, and the organic solid of different densities is in separating medium Effect is lower to be vibrated more fully to obtain the higher low grey organic solid of precision and high grey organic solid, and the efficiency of separation is high, The adaptability of sorting unit is good, goes for the sorting of the organic solid of greater density scope.

In addition, according to the sorting unit of the utility model embodiment, there can also be following additional technical feature：

According to one embodiment of the present utility model, the cross-sectional area of at least one sub- separation chamber is gradual from the bottom to top Increase.

Alternatively, each sub- separation chamber is taper type.

Alternatively, the span of the cone angle of the sub- separation chamber is 0~120 °.

Preferably, the cone angle of the sub- separation chamber above in the adjacent two sub- separation chamber is less than under being located at The cone angle of the sub- separation chamber of side.

According to one embodiment of the present utility model, the sub- separation chamber is two, the underlying sub- separation chamber In height H1 >=0.1m of above-below direction, the height H2 >=1.0m of the sub- separation chamber above in the vertical direction.

According to one embodiment of the present utility model, the body includes：Vertically extending cylindrical case body；Edge The cylindrical inner case body of above-below direction extension, the cylindrical inner case body is located in the cylindrical case body, in the cylindrical inner case body The separation chamber is limited, separating medium room, the sorting are limited between the cylindrical case body and the cylindrical inner case body Dielectric chamber include with the one-to-one more sub- separating medium rooms of multiple sub- separation chamber, multiple imports with it is multiple described Sub- separating medium room corresponds connection, by being located between each sub- separation chamber and the corresponding sub- separating medium room Multiple through holes connection on the inner housing.

Alternatively, the sub- separation chamber is two, multiple described logical in the side wall of the underlying sub- separation chamber The gross area in hole is 20%~40% with the ratio range of the area of the side wall of the corresponding sub- separation chamber；Institute above The ratio of the gross area of multiple through holes in the side wall of Shu Zi separation chamber and the area of the side wall of the corresponding sub- separation chamber It is 10%~30% to be worth scope.

According to one embodiment of the present utility model, the body upper end is provided with vertically extending lead segment, institute The pilot chamber for limiting in lead segment and being connected with the separation chamber is stated, second discharging opening is located at the upper of the lead segment End.

According to the screening installation of the utility model second aspect embodiment, including according to the above-mentioned first aspect of the utility model The sorting unit of embodiment.

According to the screening installation of the utility model second aspect embodiment, by setting according to the utility model above-mentioned first The sorting unit of aspect embodiment so that the screening installation with above-mentioned sorting unit with all advantages, here no longer Repeat.

Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment Become obvious and be readily appreciated that, wherein：

Fig. 1 is the structural representation according to the sorting unit of the utility model one embodiment；

Fig. 2 is profile of the sorting unit shown in Fig. 1 along line A-A；

Fig. 3 is profile of the sorting unit shown in Fig. 1 along line B-B；

Fig. 4 is profile of the sorting unit shown in Fig. 1 along line C-C；

Fig. 5 is the structural representation according to the sorting unit of the utility model another embodiment；

Fig. 6 is profile of the sorting unit shown in Fig. 5 along line D-D；

Fig. 7 is profile of the sorting unit shown in Fig. 5 along E-E lines；

Fig. 8 is profile of the sorting unit shown in Fig. 5 along F-F lines.

Reference：

Sorting unit 100；

Body 1；Shell body 11；Import 111；

Inner housing 12；Separation chamber 121；Sub- separation chamber 1211；Through hole 122；

Lead segment 2；Pilot chamber 21；Second discharging opening 22；Feeding mouth 23；

Separating medium room 101；Sub- separating medium room 1011；First discharging opening 102.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model Limitation.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Can be connection or the interaction relationship of two elements of two element internals.For one of ordinary skill in the art Speech, can understand concrete meaning of the above-mentioned term in the utility model as the case may be.

Below with reference to Fig. 1-Fig. 8 descriptions according to the sorting unit 100 of the utility model first aspect embodiment, the sorting Device 100 can be used for the sorting of different densities granulate mixture, for example, sorting unit 100 can be divided organic solid Choosing is handled, to obtain low grey organic solid and high grey organic solid.Used in the description below the application with sorting unit 100 Illustrated exemplified by the sorting of organic solid.

Described " organic solid " refers to coal, rubbish and biomass in the application.Ash content in organic solid includes oxidation The inorganic constituents such as silicon, aluminum oxide, magnesia or iron oxide.The density of organic solid reflects the height of ash content, in organic solid Then density is different for content of ashes difference, and then density is big for ash content height, and the low then density of ash content is small.Sorting unit 100 can be by different ashes The organic solid divided sub-elects high grey organic solid and low grey organic solid.

Specifically, the reproducibility carbon containing high level in organic solid, hydrogen and ash content (such as volatile matter, inorganic salts and The impurity such as oxide), can be by low grey organic solid and high grey organic solid point by the way that organic solid is carried out into sorting process From wherein low grey organic solid may be used as preparing the reducing agent of calcium carbide after processing, high grey organic solid can be with after processing As gasified raw material, thermal power generation raw material for preparing Coal Gasification gas etc..

It should be noted that the term " high ash " and " low ash " in the application are not absolute probability, but relative concept, The relative amount of ash content in organic solid is specifically referred to, in other words, above-mentioned " low grey organic solid " is relative to " high ash is organic solid Body " has a relatively low content of ashes, and the specific content of ashes in above-mentioned " low grey organic solid " and " high grey organic solid " is not It is particularly limited.

As shown in Figure 1 and Figure 5, body 1 is included according to the sorting unit 100 of the utility model embodiment, limited in body 1 Go out separation chamber 121, body 1 is provided with the feeding mouth 23 connected respectively with separation chamber 121, the first discharging opening 102 and the second discharging Mouth 22, the first discharging opening 102 is located at the bottom of separation chamber 121, and the second discharging opening 22 is located at the top of separation chamber 121, You Jigu Body raw material is entered in separation chamber 121 by feeding mouth 23, and feeding mouth 23 can be located on the roof and side wall of separation chamber 121, preferably Ground, feeding mouth 23 are set or are located on the roof of separation chamber 121 adjacent to the top of separation chamber 121, and such organic solid is being divided Select the sorting path in room 121 longer, it is possible thereby to improve the sharpness of separation and the efficiency of separation of organic solid.

Separating medium is passed through in separation chamber 121, separating medium can be that air can also be water, that is, pass through air-flow and current Different densities granulate mixture is sorted.Illustrated exemplified by this application using air as separating medium.It is organic solid Body is accelerated into the interior solid particle of different densities in the presence of air-flow of separation chamber 121, retarding efffect, is shaken so as to realize Layering is swung, the light material product of low-density and highdensity heavy material product separate in the effect of air-flow, the light thing of low-density Material product rises in separation chamber 121 and discharged by the second discharging opening 22, and highdensity heavy material product is in separation chamber 121 Sink down into the bottom of separation chamber 121 and discharged by the first discharging opening 102, it is organic solid so as to sub-elect low grey organic solid and high ash Body.

It should be understood that the principle that low grey organic solid and high grey organic solid sorting are opened is, by adjusting separation chamber Wind speed in 121, the material particles sorting of different densities can be opened, the size of wind speed directly influences the material production sub-elected The height of thing density.Thus the uniformity of the size of wind speed and the wind speed distribution in separation chamber 121 will be direct in separation chamber 121 Affect the sharpness of separation of organic solid.

In the prior art, separation chamber only has an import for being used to be passed through air-flow, and the import is generally located in sorting Set on the bottom wall of room or adjacent to the bottom of separation chamber, it is contemplated that, air-flow is being entered after separation chamber and divided by bottom During the indoor flowing from the bottom to top of choosing, the flow velocity of air-flow will reduce, that is to say, that the air-flow velocity on separation chamber top is small Air-flow velocity in separation chamber bottom, the flow velocity of air-flow and the granular size of organic solid, the shape of particle are passed through in separation chamber It is relevant with the density of material, the sorting requirement of organic solid is met to the air-flow velocity size for making separation chamber top, then point Practically necessary air-flow velocity will be more than by selecting the air-flow velocity of room bottom, thus will cause to be settled down to separation chamber bottom High grey organic solid rises in the presence of air-flow re-mixed with low grey organic solid together with, to make separation chamber bottom Air-flow velocity size meets that material sorting requires, then the air-flow velocity size on separation chamber top will be less than practically necessary Air-flow velocity, low grey organic solid thus will be caused to sink and re-mixed with the grey organic solid of height together with, thus drop significantly Low sharpness of separation and the efficiency of separation.In addition, above-mentioned sorting unit, the sorting effect for the less organic solid of density difference Fruit is poor, thus reduces the adaptability of sorting unit.

In order to solve the above problems, the separation chamber 121 of the sorting unit 100 of the application is included along the vertical direction successively side by side The Duo Gezi separation chamber 1211 for setting and communicating with each other, entering suitable for connection separating medium source is respectively provided with per Ge Zi separation chamber 1211 Mouth 111.Specifically, separation chamber 121 includes Duo Gezi separation chamber 1211, it is necessary to which explanation, " multiple " are meant that two Or two or more, for example, separation chamber 121 can include the sub- separation chamber 1211 of two, three, four, or more, more height point Select room 1211 to be arranged side by side along the vertical direction and communicate with each other, be respectively provided with per Ge Zi separation chamber 1211 suitable for connection separating medium source Import 111, that is to say, that can be passed directly into air-flow per Ge Zi separation chamber 1211 so that sub- separation chamber 1211 it Between air-flow velocity it is more uniform, i.e., the air-flow velocity in separation chamber 121 is more uniform, the air-flow velocity on the top of separation chamber 121 It is roughly equal with the air-flow velocity of separation chamber 121 bottom, so that the sharpness of separation of material and the efficiency of separation are higher, sorting dress Put 100 adaptability it is also more preferable.

It should be noted that the flow velocity for the air-flow being passed through in per Ge Zi separation chamber 1211 can be with equal, can also be unequal, The flow velocity for the air-flow being passed through in per Ge Zi separation chamber 1211 can be big according to the density feature of organic solid, grain shape, particle Small grade calculates.Because air-flow has the characteristic for flowing up diffusion, it is preferable that be passed through in superposed sub- separation chamber 1211 The flow velocity of air-flow be less than the flow velocity for being passed through air-flow in the sub- separation chamber 1211 of bottom, it is possible thereby to so that separation chamber Air-flow velocity in 121 is more uniform, and the separating effect of sorting unit 100 is more preferable.

Because organic solid type is different, the composition outside its ash content is also different, therefore, for different types of organic solid Body, density also can be different when content of ashes is identical so that for different types of organic solid, to sub-elect identical content of ashes Low grey organic solid, the intake of its separation chamber is different.Therefore, it is possible to sub-elect the organic solid of identical content of ashes The intake of separation chamber be difficult to define, it is necessary to be adjusted for specific organic solid.

According to the sorting unit 100 of the utility model embodiment, by making every Ge Zi separation chamber 1211 be respectively provided with suitable for connecting The import 111 in logical separating medium source so that the separating medium flow velocity in separation chamber 121 is more uniform, different densities it is organic solid Body is vibrated in the presence of separating medium more fully to obtain the higher low grey organic solid of precision and high grey organic solid, And the efficiency of separation is high, the adaptability of sorting unit 100 is good, goes for the sorting of the organic solid of greater density scope.

It should be noted that the ash content in organic solid is mainly that silica, aluminum oxide, magnesia or iron oxide etc. are inorganic Composition, organic solid low grey organic solid after processing may be used as preparing the reducing agent of calcium carbide, when content of ashes is too high, then can The performance of furnace of calcium carbide is had a strong impact on, the blast of furnace of calcium carbide can be triggered, produces fatal consequence, it then becomes necessary to control furnace of calcium carbide The ash content of middle organic solid, applicant's empirical discovery, when the content of ashes of organic solid is less than or equal to 12%, it can ensure The performance of furnace of calcium carbide is unaffected, in safe range.Using the sorting unit 100 of the application, sorted by adjusting per height The size of air quantity is passed through in room 1211, the low ash that 12% can be less than or equal to by sub-electing content of ashes in organic solid raw material Organic solid, and then ensure the safe and smooth production of follow-up calcium carbide.In one embodiment of the present utility model, at least one son The cross-sectional area of separation chamber 1211 gradually increases from the bottom to top, that is to say, that in Duo Gezi separation chamber 1211, can only have one Gradually the cross-sectional area of increase or Duo Gezi separation chamber 1211 is equal from the bottom to top for the cross-sectional area of Ge Zi separation chamber 1211 Gradually increase from the bottom to top.Thus, it is possible to improve the sharpness of separation and the efficiency of separation of sorting unit 100.

Preferably, as shown in Figure 1 and Figure 5, be taper type per Ge Zi separation chamber 1211, cross section can be it is circular or It is square.Thus, it is possible to improve the sharpness of separation and the efficiency of separation of sorting unit 100.The value model of the cone angle of sub- separation chamber 1211 Enclose for 0~120 °, that is to say, that the cone angle of sub- separation chamber 1211 is more than 0 and less than or equal to 120 °, such as cone angle can be 10 °, 20 °, 25 °, 40 °, 60 ° or 120 ° etc..

In a specific example of the present utility model, as shown in figure 1, the cone angle per Ge Zi separation chamber 1211 is equal, Good separation effect, and produce and process conveniently.Preferably, the scope of the cone angle per Ge Zi separation chamber 1211 is 10 °~60 °, That is the cone angle per Ge Zi separation chamber 1211 is more than or equal to 10 ° and less than or equal to 60 °.

In another specific example of the present utility model, as shown in figure 5, being located in adjacent Liang Gezi separation chamber 1211 The cone angle of the sub- separation chamber 1211 of top is less than the cone angle of underlying sub- separation chamber 1211, and separating effect is more preferable, sorting dress Put 100 structure it is more diversified.The scope for being preferably located at the cone angle of the sub- separation chamber 1211 of lower section is 60 °~120 °, position In top sub- separation chamber 1211 cone angle scope be 0~30 °, that is to say, that the cone angle of underlying sub- separation chamber 1211 More than or equal to 60 ° and less than or equal to 120 °, the cone angle of sub- separation chamber 1211 above is more than 0 and is less than or equal to 30 °, so that the efficiency of separation of sorting unit 100 is more preferable.

In a specific embodiment of the present utility model, as shown in Figure 1 and Figure 5, sub- separation chamber 1211 is two, is located at The sub- separation chamber 1211 of lower section is in height H1 >=0.1m of above-below direction, and sub- separation chamber 1211 above is in the vertical direction Height H2 >=1.0m.That is, underlying sub- separation chamber 1211 is more than or equal in the height H1 of above-below direction 0.1m, such as height H1 can be 0.1m, 0.2m, 0.25m or 0.4m etc., and sub- separation chamber 1211 above is in above-below direction On height H2 be more than or equal to 1.0m, for example, height H2 can be 1.0m, 1.5m or 1.8m etc., so that sorting unit 100 separating effect is more preferable.

In one embodiment of the present utility model, as shown in Fig. 1-Fig. 3 and Fig. 5-Fig. 7, body 1 is included along the vertical direction The cylindrical case body 11 of extension and vertically extending cylindrical inner case body 12, cylindrical inner case body 12 are located at cylindrical case body 11 It is interior, separation chamber 121 is limited in cylindrical inner case body 12, separating medium is limited between cylindrical case body 11 and cylindrical inner case body 12 Room 101, separating medium room 101 include with the one-to-one more sub- separating medium rooms 1011 of Duo Gezi separation chamber 1211, it is multiple Import 111 is corresponded with more sub- separating medium rooms 1011 and connected, every Ge Zi separation chamber 1211 and corresponding sub- separating medium Connected between room 1011 by the multiple through holes 122 being located on inner housing 12.With by setting multiple through holes on inner housing 12 122, such air-flow enters separating medium room 101 by import 111 first, and then air-flow is uniformly flowed into by multiple through holes 122 In separation chamber 121, so that the air-flow velocity in separation chamber 121 is more uniform, sorting unit 100 is thus further improved Sharpness of separation.

In a specific example of the present utility model, as shown in Figure 1 and Figure 5, sub- separation chamber 1211 is two, under being located at The gross area of multiple through holes 122 in the side wall of the sub- separation chamber 1211 of side and the area of the side wall of corresponding sub- separation chamber 1211 Ratio range be 20%~40%, such as can be 20%, 30% or 40%；The side wall of sub- separation chamber 1211 above On multiple through holes 122 the gross area and the area of the side wall of corresponding sub- separation chamber 1211 ratio range for 10%~ 30%, such as can be 10%, 20% or 30%.As a result, the air-flow velocity in separation chamber 121 is more uniform, thus may be used Further to improve the sharpness of separation of sorting unit 100.The aperture of multiple through holes 122 is preferably 2-5mm, i.e. the hole of through hole 122 Footpath is more than or equal to 2mm and is less than or equal to 5mm, such as can be 2mm, 3mm, 4mm or 5mm etc., so that air intake is more It is uniform smooth.

In the utility model one embodiment, the upper end of body 1 is provided with vertically extending lead segment 2, lead segment 2 The pilot chamber 21 connected with separation chamber 121 is inside limited, the second discharging opening 22 is located at the upper end of lead segment 2, and lead segment 2 will divide The light product of low-density after choosing derives separation chamber 121, it is possible thereby to improve the efficiency of separation.Such as Fig. 1, Fig. 4, Fig. 5 and Fig. 8 institute Show, the cross-sectional area of pilot chamber 21 is gradually reduced from the bottom to top, the guiding of the light product of the low-density after sorting in lead segment 2 Lower discharge separation chamber 121, by making the cross-sectional area of pilot chamber 21 be gradually reduced from the bottom to top, light product discharge is smooth, and And lead segment 2 is simple in construction.Alternatively, the second discharging opening 22 can connect cyclone dust collectors, and be also provided with lead segment 2 Air exhauster, it is possible thereby to so that light product is more quickly discharged, and can be to the second discharging opening 22 by cyclone dust collectors The product of discharge carries out solid and gas separation, and thus separating medium can recycle, so as to save the energy.Alternatively, such as Fig. 1 and figure Shown in 5, feeding mouth 23 can be located in the side wall of lead segment 2, so that the sorting path of material is longer, separating effect is more It is good.

As shown in Figure 1 and Figure 5, pilot chamber 21 can be formed as taper type, and cross section can be circular or square.It is excellent Selection of land, the cone angle scope of pilot chamber 21 is 5 °~60 °.That is, the cone angle of pilot chamber 21 is more than or equal to 5 ° and small In or equal to 60 °, for example, the cone angle of pilot chamber 21 can be 5 °, 6 °, 10 °, 30 °, 50 °, 55 ° or 60 ° etc., guide effect More preferably.

According to the screening installation of the utility model second aspect embodiment, including according to the above-mentioned first aspect of the utility model The sorting unit 100 of embodiment.

According to the screening installation of the utility model second aspect embodiment, by setting according to the utility model above-mentioned first The sorting unit 100 of aspect embodiment so that the screening installation with above-mentioned sorting unit 100 with all advantages, this In repeat no more.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe Structure, material or feature are contained at least one embodiment or example of the present utility model.In this manual, to above-mentioned art The schematic representation of language is not necessarily referring to identical embodiment or example.Moreover, description specific features, structure, material or Person's feature can combine in an appropriate manner in any one or more embodiments or example.

While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that： These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle and objective of the present utility model, replaced And modification, the scope of the utility model are limited by claim and its equivalent.

Claims (10)

1. A kind of 1. sorting unit, it is characterised in that including：

   Body, limits separation chamber in the body, and the body is provided with the feeding mouth connected respectively with the separation chamber, the One discharging opening and the second discharging opening, first discharging opening are located at the bottom of the separation chamber, and second discharging opening is located at institute The top of separation chamber is stated,

   Wherein, the separation chamber includes the Duo Gezi separation chamber for being arranged side by side and communicating with each other successively along the vertical direction, Mei Gesuo Shu Zi separation chamber is respectively provided with the import suitable for connection separating medium source.
2. 2. sorting unit according to claim 1, it is characterised in that the cross-sectional area of at least one sub- separation chamber by Under it is supreme gradually increase.
3. 3. sorting unit according to claim 2, it is characterised in that each sub- separation chamber is taper type.
4. 4. sorting unit according to claim 3, it is characterised in that the span of the cone angle of the sub- separation chamber is 0 ~120 °.
5. 5. sorting unit according to claim 3, it is characterised in that above in two adjacent sub- separation chamber The sub- separation chamber cone angle be less than the underlying sub- separation chamber cone angle.
6. 6. sorting unit according to claim 1, it is characterised in that the sub- separation chamber is two, underlying institute Shu Zi separation chamber is in height H1 >=0.1m of above-below direction, the height H2 of the sub- separation chamber above in the vertical direction ≥1.0m。
7. 7. according to the sorting unit any one of claim 1-6, it is characterised in that the body includes：

   Vertically extending cylindrical case body；

   Vertically extending cylindrical inner case body, the cylindrical inner case body is located in the cylindrical case body, in the tubular The separation chamber is limited in housing, separating medium room, institute are limited between the cylindrical case body and the cylindrical inner case body State separating medium room include with the one-to-one more sub- separating medium rooms of multiple sub- separation chamber, multiple imports with it is more The individual sub- separating medium room corresponds connection, leads between each sub- separation chamber and the corresponding sub- separating medium room Cross the multiple through holes connection being located on the inner housing.
8. 8. sorting unit according to claim 7, it is characterised in that the sub- separation chamber is two, underlying institute The ratio of the gross area of multiple through holes in the side wall of Shu Zi separation chamber and the area of the side wall of the corresponding sub- separation chamber It is 20%~40% to be worth scope；

   The gross area of multiple through holes in the side wall of the sub- separation chamber above and the corresponding sub- separation chamber Side wall area ratio range be 10%~30%.
9. 9. sorting unit according to claim 1, it is characterised in that the body upper end is provided with vertically extending Lead segment, the pilot chamber connected with the separation chamber is limited in the lead segment, and second discharging opening is located at described lead Draw the upper end of section.
10. A kind of 10. screening installation, it is characterised in that including：According to the sorting unit any one of claim 1-9.