CN206199505U - Cyclone separator - Google Patents

Abstract

Cyclone separator for isolating solid particle from exhaust stream, including：Housing, it has：Envelope area, cap region and bottom section；Entrance opening；Exhaust lay out；Outlet opening, the cyclone separator is additionally provided with dipping tube, it passes through cap region or bottom section and including opening wide end regions, unlimited end regions extend into the inside of housing, the separator is provided with least one pure gas circuit of the supply for pure gas, and pure gas is supplied to the inner wall part of housing；Cap region or bottom section are converged in the side wall of exhaust lay out in planar fashion, to ensure the boundary layer flow of the formation pure gas at inner wall part.According to the application, pure gas is being supplied to conveyed in the exhaust lay out, exhaust stream containing solid particle to be separated before entering housing or during housing is entered, pure gas is then fed to the inner wall part by boundary layer flow is formed in this place of housing, is achieved in preferably removing solid particle from exhaust stream.

Description

Cyclone separator

Technical field

The utility model is related to a kind of cyclone separator for isolating solid particle from exhaust stream, including：Housing, The housing has cap region, bottom section and is preferably at least in some parts for columnar envelope area；Entrance is opened Mouthful, the entrance opening is used to be supplied to cyclone separator；Exhaust lay out, the exhaust lay out leads to the entrance opening, uses In the exhaust stream for being mixed with solid particle；And outlet opening, the outlet opening is used for the solid particle isolated from exhaust stream, Wherein, dipping tube is provided with, the dipping tube passes through cap region or bottom section and including opening wide end regions, the unlimited petiolarea Domain extend into the inside of housing, and as the exit opening for the cleaned exhaust stream from housing；The application is also related to And a kind of method for being isolated solid particle from exhaust stream by cyclone separator, wherein, conveyed in exhaust lay out And the exhaust stream containing solid particle to be separated is conducted through the housing of cyclone separator and eventually through outlet Opening is moved out of outside housing, wherein, the solid particle being discharged on the inwall of housing by centrifugal force is drawn in exhaust stream To decline during leading and will be discharged by the outlet opening for setting in the housing.

Background technology

Cyclone separator for isolating solid material or dust from exhaust stream is from the prior art fully Know.

General cyclone separator disclosed in the examples of DE 601170514 includes such as steel plate of generally vertical arrangement The housing of system, the inside of the housing by cap region, bottom section and general cylindrical shape envelope area gauge.

The housing includes entrance opening, and the entrance opening is arranged to the opening in the envelope area of cyclone separator, and And cyclone separator is supplied to by the entrance opening, i.e.,：Air-flow is transported to the interior of cyclone separator by the entrance opening Portion.

It is mixed with solid particle and needs the exhaust stream for being cleaned to be conveyed towards cyclone separator in exhaust lay out.Row Gas circuit leads to entrance opening.Exhaust lay out and cyclone separator are generally aligned so that the supply phase of the exhaust stream to be cleaned The imaginary circle concentric for the axis on cyclone separator is tangentially carried out.

The exit opening of cyclone separator is by extending into the inside of housing and (this takes through cap region or bottom section The certainly position in cyclone separator under operating position) the unlimited end regions of dipping tube formed.Cyclone separator generally general (but It is not definitely) operate as so that dipping tube is arranged through the cap region of cyclone separator.

When exhaust stream along substantially spiral path through housing inside when, entrainment solid particle within an exhaust-gas stream by from Mental and physical efforts are discharged on the inwall of housing, and the bottom section of housing will be dropped down onto under due to gravity, and by least one Exit opening and drop into connected separation container.

Collecting solid particle in the separation container of housing will be subsequently removed and for example by briquetting and can be used as Fuel.

The nothing of circulation and the recycling of the environmental consciousness of raising and the input material needed in order to technical process optimizes Seam docking proposes increased requirement to industrial separation technology.

In addition to carrying out the method for dedusting by centrifugal force by described cyclone separator, commercially especially also have Electronic filter and bag filter.Although the latter is characterised by high dust removal performance, this only can be at a relatively high operation Realized under conditions of cost and energy cost.

By contrast, carrying out dedusting by centrifugal force or cyclone separator has the principle of work and power simply too much, and needs Less power and resource are wanted, this is also considered as in terms of environment being favourable.However, using conventional cyclone separator The separating effect and separating property to be realized generally no longer is sufficient for current standard and legal requirements.

One of them is main reason is that boundary layer flow, the boundary layer flow is with the solid particle increased on exhaust stream Concentration, and the boundary layer flow be formed in cyclone separator be dipped into pipe through bottom section or cap region part In, and the dipping tube along the inside for extending into cyclone separator envelope surface.

Friction of the boundary layer flow by exhaust stream in described region and produce.With substantially spiral way in housing Inside in the exhaust stream that rotates therefore in the region of dipping tube close to stagnation, therefore formed not by the obstruction from this Desired boundary layer flow.

The purpose of dipping tube is to prevent from the accumulations of the solid particle being present in boundary layer flow from reaching to be arranged in bottom zone The exit opening of the housing in domain or cap region.By using dipping tube, the exit opening is further displaced to whirlwind point In the inside of device.

However, the boundary layer flow produced in cyclone separator and the cleaned exhaust stream discharged by exit opening Turbulent closure scheme thing continues to cause solid particle to pass through exit opening from boundary layer flow discharge, although this delivery ratio does not use immersion The situation of pipe is weaker.

In other words, forming boundary layer flow causes the exhaust stream that solid particle passes through actually to be cleaned to be discharged, cyclonic separation Thus the separating property of device is adversely affected.

It has already been proposed measure with reduce in cyclone separator produce boundary layer flow dust content or destruction Boundary layer flow.However, these methods do not produce any gratifying result.People make great efforts will be loaded with solid The boundary layer suction of grain is simultaneously redirected back towards the inside of cyclone separator at the position away from exit opening.

It is further known be injected into pure air in cyclone separator by the nozzle in the cap region for passing through housing Thus portion simultaneously makes boundary layer flow be vortexed.

The vortex produced when boundary layer is resisted result in and be related to the separation effect that things turn out contrary to one's wishes of solid particle.

On this point, the A of FR 2281791 must be contemplated, it discloses a kind of cyclone separator, the cyclonic separation Utensil has the feedway for the acceleration air in feed element or on feed element, to destroy boundary layer flow.

The A1 of DE 2925245 are disclosed with two cyclone separators of the worm screw of spiral component are included, wherein the first spiral shell Rotation component load-bearing has exhaust stream, and the second spiral component carries pure gas.Pure gas is dividually transported to rotation with exhaust stream In wind separator.

The A1 of DE 4217016 disclose a kind of dipping tube for cyclone separator.Without setting for open pure gas circuit Put.

The A1 of DE 4313337 disclose a kind of cyclonic separation with relative to the inclined flow channel of its axis of symmetry Device.Supply without open pure gas.

Utility model content

The utility model is based on following purposes：The shortcoming of conventional cyclones is avoided, and there is increase by confrontation Concentration of solid particles boundary layer flow measure and realize for being directed from cyclone separator and by solid particle The improvement of solid particle is isolated in the exhaust stream of pollution.

The purpose is realized according to the utility model by following technical proposals.

A kind of cyclone separator for isolating solid particle from exhaust stream, including：

Housing, the housing has：Envelope area, cap region and bottom section；Entrance opening, the entrance opening For being supplied to the cyclone separator；Exhaust lay out, the exhaust lay out leads to the entrance opening, for being mixed with The exhaust stream of solid particle；And outlet opening, the outlet opening is used for the solid isolated from the exhaust stream Grain, wherein, the cyclone separator is provided with dipping tube, the dipping tube through the cap region or the bottom section and Including opening wide end regions, the unlimited end regions extend into the inside of the housing, and as from the housing The exit opening of cleaned exhaust stream, wherein, it is at least one pure that the cyclone separator is provided with the supply for pure gas Gas line, wherein, when along the exhaust stream flow direction observe when, the pure gas circuit the entrance opening it Before lead to the entrance area being arranged in the exhaust lay out, or be directly communicated to the entrance opening, and the pure gas It is supplied to the inner wall part of the housing；In the case where the pure gas is not supplied, gradually formed at the inner wall part with The boundary layer flow of the exhaust stream compared to the concentration of solid particles with increase of solid particle is mixed with, wherein, the cap Region or the bottom section are converged in the side wall of the exhaust lay out in planar fashion, to ensure the shape at the inner wall part Into the boundary layer flow of pure gas, the boundary layer flow substitutes the boundary layer flow of the concentration of solid particles with increase.

Preferably, the envelope area is cylindrical shape at least in some parts.

Opening in the envelope area of cyclone separator should be understood to entrance opening, and gas can be by the entrance opening Into the inside of cyclone separator.

On this point, fluid should be understood to compared with the exhaust stream that will be purified by cyclone separator have compared with Purity high or the pure gas of relatively low solid content.Air preferably acts as pure gas.

According to the utility model, pure gas be used to substitution attainable separating degree is had adverse effect and with compared with The boundary layer flow of concentration of solid particles high, or in other words, pure gas is directed to the inner wall part in the inside of cyclone separator (boundary layer flow of solids laden will be formed at the inner wall part under normal conditions), so that boundary layer flow will be Only with pure gas or with high content in the case of without concentration of solid particles or with relatively low concentration of solid particles Pure gas formed.

Pure gas is considered as related in not being directly injected into boundary layer, but pure gas is directed to cyclonic separation In device so that exhaust stream is as small as possible by being influenceed, it means that actually allow pure gas to be changed into the composition portion of exhaust stream Point, without causing its any mixing.This is only capable of being related to for pure gas according to the flow properties of exhaust stream in the suitable time And could be realized in the case of the regulation of airflow direction and air velocity, and the introducing that pure gas is flowed in exhaust stream to the greatest extent may be used Can be without being carried out in the case of any turbulent flow, so that both streams can be incorporated into whirlwind with layer flow mode adjacent to each other In separator.

Therefore, according to the utility model, it is necessary to which pure gas stream is introduced directly into entrance opening, or preferably entering Mouth has been introduced into exhaust stream before being open.More early can adjust pure gas according to the flow properties of exhaust stream, then can be more Pure gas is supplied well to the inner wall part of cyclone separator, it is generally the case that can be formed at the inner wall part with increase Concentration of solid particles the unfavorable boundary layer flow of influence.

According to the utility model, the inner wall part be related to by be dipped into pipe through cap region or bottom section formed The adjacent big envelope of the inner surface of cyclone separator and the dipping tube through enclosure interior.

In the case of the exhaust lay out that pure gas circuit enters for entrance opening, according to of the present utility model especially excellent The modification of choosing, is arranged to when being seen along the direction of observation of the longitudinal axis for following exhaust lay out, in exhaust lay out closer to shell Body be dipped into pipe through part cross section half portion on be disposed with orifice area for pure gas circuit.

This is provided allows the possibility taken away by exhaust stream of pure gas, at the same make pure gas need to cover always it is above-mentioned The distance minimization of inner wall part.

According to another preferred embodiment of the present utility model, it is alternatively set to cause the area of the entrance opening in housing Into guide is disposed with the orifice area of exhaust lay out in domain and/or in pure gas circuit, the guide is along above-mentioned The direction guiding pure gas of inner wall part.

In principle it has to be noticed that the setting of guide is not configured to for pure gas to guide required to above-mentioned inner wall part institute , because those skilled in the art are had been able to by properly selecting orifice area when the flow condition of exhaust stream is known Position and selection pure gas be introduced directly into cyclone separator by entrance opening or be incorporated into by orifice area Flowing velocity and flow direction in exhaust lay out are supplied to above-mentioned inner wall part ensuring pure gas.

In a favourable implementation method of the present utility model in terms of the manufacture and flowing, it is arranged to pure gas circuit The partial cross-section of exhaust lay out is formed at least in some parts, and is arranged to shaft element, wherein at least one partition wall It is arranged in the shaft element for separating pure gas and exhaust stream.

One implementation method is particularly advantageous in this regard, and in this embodiment, at least one partition wall is extremely Few longitudinal axis extended parallel to the preferred levels of shaft element in some parts extends.Preferably, shaft element has rectangle Cross section, wherein partition wall are arranged to plate, and the plate passes through the side wall phase of its lateral edges and two generally upstanding extensions of shaft element It is adjacent.

According to another preferred embodiment of the present utility model, it is arranged so that the cap area of the housing of cyclone separator Domain or bottom section are converged in the side wall of exhaust lay out or pure gas circuit in planar fashion.

Therefore, which ensures that the major part of pure gas or the pure gas of introducing is channeled directly into rotation along the side wall The above-mentioned inner wall area of wind separator and can in this place form boundary layer flow.

The application further relates to a kind of solid particle is isolated from exhaust stream method by cyclone separator, wherein, Conveyed in exhaust lay out and the exhaust stream containing solid particle to be separated is conducted through the housing of cyclone separator simultaneously And be moved out of outside housing eventually through exit opening, wherein, the solid on the inwall of housing is discharged to by centrifugal force Grain is declined during exhaust stream is conducted through housing and is discharged by the outlet opening for setting in the housing.According to The utility model, is arranged so that pure gas is supplied in exhaust before entering housing or during housing is entered Conveyed in the circuit, exhaust stream containing solid particle to be separated, wherein, what pure gas was then fed to housing will be The inner wall part of boundary layer flow is formed at this, the boundary layer flow will be with than being mixed with solid in the case where no pure gas is supplied The big concentration of the exhaust stream of particle.

Thus, advantage mentioned above is then realized using the cyclone separator.

In order to ensure pure gas stream and the minimum possible vortex of the contaminated exhaust stream guided in exhaust lay out, root According to a preferred embodiment of the method, at least at some before being arranged to pure gas in into the housing of cyclone separator It is directed along the flow direction for being roughly parallel to exhaust stream in part.

According to another preferred modification of the method, pure gas is directed into housing in the way of substantially tangentially.Obtain The substantially spiral obtained into the pure gas stream of housing is flowed into, and this is favourable from the point of view of viewpoint is flowed.

According to the utility model, depending on the position of arrangement fan, pure gas can be injected into or be sucked by fan.

A preferred embodiment according to method of the present utility model, realizes especially economic dedusting so that supply Amount to the pure gas of exhaust stream is into the 1% to 5% of the gas volume amount of cyclone separator, it is therefore preferable to 2% to 3% (by volume).

According to another preferred embodiment of the present utility model, it is arranged so that the temperature of pure gas less than exhaust stream Temperature, thus the thermal stress on dipping tube can also be reduced and therefore its service life can extend.

A particularly preferred embodiment of the present utility model is arranged to make pure in the entrance area of cyclone separator The flow velocity of gas is the 80% to 120% of the flow velocity of exhaust stream, it is therefore preferable to 90% to 110%.Under these conditions, formation Boundary layer flow is actually only made up of pure gas.

Brief description of the drawings

The utility model will be explained in greater detail with reference to implementation method, wherein：

Fig. 1 shows the schematical vertical sectional view according to cyclone separator of the present utility model；

Fig. 2 shows the line along the section A-A in Fig. 1 of the implementation method according to cyclone separator of the present utility model The horizontal sectional view of interception；

Fig. 3 shows the schematical vertical section according to the alternative embodiment of cyclone separator of the present utility model Figure；

Fig. 4 show the alternative embodiment according to cyclone separator of the present utility model along the section in Fig. 3 The horizontal sectional view of the line interception of A-A；

Fig. 5 show the alternative embodiment according to cyclone separator of the present utility model along the section in Fig. 3 The horizontal sectional view of the line interception of A-A.

Specific embodiment

Fig. 1 shows the first embodiment according to cyclone separator of the present utility model 1, and cyclone separator 1 includes big The housing 2 that cause is vertically arranged, housing 2 is made up and the envelope area 2a including general cylindrical shape or tubulose, big envelope area of steel plate Face side partes tegmentalis region 2b is closed and closed by bottom section 2c in its basal surface side domain 2a thereon.

Housing 2 includes entrance opening 3, and entrance opening 3 is located in the part adjacent with cap region 2b of envelope area 2a, Exhaust stream 6 can be fed into the inside 15 of cyclone separator 1 by entrance opening 3.In current implementation method, for wanting The exhaust lay out 5 that is shaft-like and extending substantially horizontally of the exhaust stream 6 being cleaned leads in entrance opening 3.Into cyclonic separation The exhaust stream 6 of the housing 2 of device 1 is contaminated and including a certain amount of solid, such as dust or coal soot.

It has to be noted here that due to manufacture view, envelope area 2a or one part (pass through example in such as Fig. 1 Mode it is shown by line 2c ') can also be exhaust lay out 5 physical composition part, thus a part of envelope area 2a and row Gas circuit 5 can also be manufactured integratedly.However, in the range of term of the present utility model, envelope area 2a or one part are Make also to be remembered as belonging to cyclone separator in this embodiment, and entrance opening 3 is defined to enter the big envelope area Opening in the 2a of domain.

Fig. 2, Fig. 4 and Fig. 5 show the entrance opening 3 with different geometries (being shown in broken lines).It is new in this practicality In one preferred embodiment of type, the cross sectional planes of the use reference 3a references of exhaust lay out 5 are in Fig. 2, Fig. 4 and Fig. 5 In be remembered as entrance opening 3.It is related to the last complete cross section plane 3a of exhaust lay out 5, and the cross sectional planes are vertical Extend in the longitudinal axis 16 of exhaust lay out 5.Have the solid particle of increase dense due to being substituted with boundary layer flow of reduced contamination The boundary layer flow of degree correlation on condition that in time according to exhaust stream adjust pure gas stream, so in most cases this tune Section must occur in exhaust lay out 5.

The inside 15 surrounded by envelope area 2a, cap region 2b and bottom section 2c is used as what is left from exhaust lay out 5 The expanding chamber of exhaust stream 6.

Entrance opening 3 and exhaust lay out 5 be arranged so that enter housing 2 substantial cylindrical cross section exhaust stream 6 with Substantially tangentially flow into.Therefore, the longitudinal direction of the approximate horizontal general vertical of the longitudinal axis 16 relative to housing 2 of exhaust lay out 5 Axis 14 extends and is arranged in a vertical plane in an offset manner.

The housing 2 of cyclone separator 1 also includes exit opening 4, and exhaust stream 6 ' is discharged again by exit opening 4, the row Air-flow is conducted through the inside 15 of housing 2 and is thus cleaned with substantially spiral way.

Exit opening 4 is formed by the dipping tube 9 of general cylindrical shape, and wherein dipping tube 9 is stretched into using its unlimited end regions 9a To in the inside 15 of housing 2.As shown in figure 1, discharge element 18 is arranged on the outside of cap region 2b of housing.It is connected to defeated Sending the discharge element 18 of pipe (not shown) makes the cleaned exhaust stream 6 ' for vertically flowing through dipping tube 9 deflect into example As on horizontal direction.

The solid particle being discharged on the inwall of housing 2 by centrifugal force will be collected in the bottom section 2c of housing 2, And it is discharged in connected separation container 22 for example, by the outlet opening 11 of annular gap form, from the separation container Can be further processed.

It is preferably but non-in order to support with minimum possible vortex amount so that exhaust stream 6 flows through the inside 15 of housing 2 Cylindrical guide pipe 10 is necessarily set, and the guiding tube is extended coaxially into and the bottom of from the longitudinal axis 14 of cyclone separator Portion region 2c extends to cap region 2b.

The conveying of exhaust stream 6 can be carried out by downstream suction fan (not shown) or upstream compressor (not shown).

In the present embodiment, cap region 2b of the dipping tube 9 through housing 2.

Boundary layer flow 17 is formed in the region of cap region 2b and the envelope surface of dipping tube 9, boundary layer flow 17 is by flowing It is dynamic to cause, and there is the concentration of solid particles of increase compared with the exhaust stream 6 for being mixed with solid particle.Inner wall part is thereon These regions for forming boundary layer flow 17 refer to for simplicity with reference 21.Fig. 1 schematically shows absolute matter The boundary layer flow 17 of amount stream 17a forms；Fig. 3 shows the actual direction of the motion 17b of the boundary layer flow 17 to be formed.

As schematically shown in figure 1, the turbulent flow in the inside 15 of cyclone separator causes following result：Deposit in a concentrated manner It is that solid particle in boundary layer flow is transported in entrance opening 4, and will again pollutes the exhaust being actually cleaned Stream 6 '.

According to the utility model, at least one pure gas circuit 8 of guiding pure gas 12 is provided with, pure gas circuit 8 leads to To exhaust lay out 5 in the entrance area 7 of the upstream of the entrance opening 3 of housing 2, therefore lead to the inside of exhaust lay out 5. Air preferably acts as pure gas 12.

Pure gas 12 then will be supplied to the inner wall part 21 of housing 2 (boundary layer flow 17 will on the inner wall part 21 shape Into), boundary layer flow 17 will have in the case of the supply without pure gas 12 compared with the exhaust stream 6 for being mixed with solid particle The concentration of solid particles of increase.

Can occur in a different manner to the supply of desired inner wall part 21.

By selecting the angle between the flow velocity of pure gas and the axis 16 of exhaust lay out and the axis of pure gas circuit 22, can realize that pure gas is taken away by exhaust stream so that pure gas is transported to desired inner wall part 21.

Used as the replacement to this, can set causes the guide (not shown) of the corresponding deflection of pure gas.

As shown in figure 1, when being seen along the direction of observation of the longitudinal axis 16 for following exhaust lay out 5, for pure gas circuit 8 Entrance area 7 be arranged in exhaust lay out be dipped into part that pipe 9 passes through (in the embodiment party according to Fig. 1 closer to housing 2 In the case of formula correspond to cap region 2b) cross section half portion on.

Fig. 3 shows the particularly preferred embodiment according to cyclone separator of the present utility model, according to the embodiment party Formula, pure gas circuit 8 forms the partial cross-section of exhaust lay out 5 in some parts.The cloth in the present embodiment of exhaust lay out 5 Axle 20 is set to, the partition wall 19 that pure gas 12 is separated with exhaust stream 6 is provided with axle 20.

Partition wall 19 terminated before entrance opening 3, but was also arranged to extend to entrance opening 3 so that In this case pure gas only enter cyclone separator 1 housing 2 in when be supplied to exhaust stream without it is this enter It is supplied to before entering.The partition wall 19 preferably flatly, parallel to exhaust stream 6 flow direction extend.Due to according to Fig. 1 Shaft element 20 there is square-section, so partition wall 19 is arranged to plate, the plate passes through its lateral edges and axle in a sealing manner Extend in a substantially perpendicular manner two side walls of element 20 are adjacent.

In the implementation method shown in Fig. 3, the side wall of cap region 2b and exhaust lay out 5 forms continuous plane, and this has Help form boundary layer flow by pure gas.

In order to realize that pure gas stream 12 carries out optimal possibility regulation according to exhaust stream 6, it is arranged to pure gas 12 straight at its It is directed approximately along the flow direction parallel to exhaust stream 6 before tapping into housing 2.

In current implementation method, pure gas 12 is directed into cyclone separator 1 in the way of substantially tangentially.

Test is it has been shown that when the amount of the pure gas of supply to exhaust stream 6 is into the 1% of the gas volume amount of housing 2 To 5%, it is therefore preferable to when 2% to 3%, there is the optimal dedusting of gas stream 6.

When the flow velocity of the pure gas 12 in the entrance area of cyclone separator (that is, in the region of entrance opening 3) is row The 80% to 120% of the flow velocity of air-flow 6, it is therefore preferable to when 90% to 110%, obtains the optimal border formed by pure gas Laminar flow.

Reference numerals list

1 cyclone separator

2 housings

2a envelope areas

2b caps region

2c bottom sections

The part of 2c ' exhaust lay outs

3 entrance openings

3a exhaust lay outs are last and complete cross section of longitudinal axis perpendicular to exhaust lay out

4 exit openings

5 supply lines

6 exhaust streams (non-purified)

6 ' exhaust streams (have been purified)

The entrance area of the 7 pure gas streams for entering exhaust stream

8 pure gas circuits

9 dipping tubes

10 guiding tubes

11 outlet openings (are used for solid particle)

12 pure gas streams

The longitudinal axis of 14 housings 2

The inside of 15 housings 2

The longitudinal axis of 16 exhaust lay outs

17 boundary layer flows

The schematic illustration of the absolute mass stream of 17a boundary layer flows

The direction of motion of 17b boundary layer flows

The 18 discharge elements for being used for cleaned exhaust stream 6 '

19 partition walls

20 shaft elements

The inner wall part of 21 housings 2

Angle between the axis of 22 exhaust lay outs and the axis of pure gas circuit

Claims (9)

1. one kind is used to be isolated from exhaust stream (6) cyclone separator (1) of solid particle, including：

Housing (2), the housing (2) has：Envelope area (2a), cap region (2b) and bottom section (2c)；Entrance is opened Mouth (3), the entrance opening (3) to the cyclone separator for being supplied；Exhaust lay out (5), the exhaust lay out (5) Lead to the entrance opening, the exhaust stream (6) for being mixed with solid particle；And outlet opening (11), the discharge Opening (11) for the solid particle isolated from the exhaust stream (6), wherein, the cyclone separator is provided with dipping tube (9), The dipping tube (9) is through the cap region (2b) or the bottom section (2c) and including opening wide end regions (9a), institute The inside (15) that unlimited end regions (9a) extend into the housing (2) is stated, and as the purification from the housing (2) The exit opening (4) of the exhaust stream (6 ') crossed, wherein, the cyclone separator be provided with for pure gas (12) supply at least One pure gas circuit (8), wherein, when being observed along the flow direction of the exhaust stream, the pure gas circuit is described Lead to the entrance area (7) being arranged in the exhaust lay out (5) before entrance opening (3), or be directly communicated to the entrance Opening (3), and the pure gas (12) is supplied to the inner wall part (21) of the housing (2)；Do not supplying the pure gas (12) in the case of, the tool compared with the exhaust stream (6) for being mixed with solid particle is gradually formed at the inner wall part (21) place There is the boundary layer flow of the concentration of solid particles of increase,

Characterized in that, the cap region (2b) or the bottom section (2c) converge to the exhaust lay out in planar fashion (5) in side wall, to ensure to form the boundary layer flow of pure gas at the inner wall part (21) place, the boundary layer flow is substituted to be had The boundary layer flow of the concentration of solid particles of increase.

2. cyclone separator (1) according to claim 1, it is characterised in that the inner wall part (21) of the housing (2) It is related to the whirlwind point formed by the cap region (2b) or the bottom section (2c) passed through by the dipping tube (9) The adjacent big envelope of the dipping tube (9) of the inner surface from device (1) and the inside (15) through the housing (2).

3. cyclone separator (1) according to claim 1 and 2, it is characterised in that when along following the exhaust lay out (5) The direction of observation of longitudinal axis (16) when seeing, for the pure gas circuit (8) the entrance area (7) be arranged in it is described In the cross section half portion closer to the part passed through by the dipping tube (9) of the housing (2) of exhaust lay out (5).

4. cyclone separator (1) according to claim 1 and 2, it is characterised in that in the entrance of the housing (2) It is open in the region of (3) and/or is disposed with guide in the entrance area (7), is conducted through the exhaust lay out (5) the pure gas (12) can be directed by the guide on the direction of the inner wall part (21).

5. cyclone separator (1) according to claim 1 and 2, it is characterised in that the pure gas circuit (8) at least exists The partial cross-section of the exhaust lay out (5) is formed in some parts, and is arranged to shaft element (20), wherein at least one point Next door (19) is arranged in the shaft element (20) that the pure gas (12) is separated with the exhaust stream (6).

6. cyclone separator (1) according to claim 5, it is characterised in that at least one partition wall (19) is at least Longitudinal axis (16) parallel to the shaft element (20) in some parts extends, and the partition wall (19) is arranged to Plate, the plate is adjacent with two side walls that the general vertical of the shaft element (20) extends by its lateral edges.

7. cyclone separator (1) according to claim 1 and 2, it is characterised in that the cyclone separator (1) it is described Cap region (2b) or the bottom section (2c) are converged in the side wall of the pure gas circuit (8) in planar fashion.

8. cyclone separator (1) according to claim 1, it is characterised in that the envelope area (2a) is at least at some Part is cylindrical shape.

9. cyclone separator (1) according to claim 6, it is characterised in that the shaft element (20) is with rectangular cross-sectional Face.