CN101862165A - Multistage cyclone separation device of dust collector - Google Patents
Multistage cyclone separation device of dust collector Download PDFInfo
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- CN101862165A CN101862165A CN200910030940A CN200910030940A CN101862165A CN 101862165 A CN101862165 A CN 101862165A CN 200910030940 A CN200910030940 A CN 200910030940A CN 200910030940 A CN200910030940 A CN 200910030940A CN 101862165 A CN101862165 A CN 101862165A
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Abstract
The invention relates to a multistage cyclone separation device of a dust collector, which comprises an upstream first-stage cyclone separation device (1), a downstream second-stage cyclone separation device (2) and a gas flow channel (3), wherein the gas flow channel (3) is used for connecting the upstream first-stage cyclone separation device (1) and the downstream second-stage cyclone separation device (2), the downstream second-stage cyclone separation device (2) comprises a cyclone filter (5), a dust-gas separation cover (6) and a central cylinder (8), at least two tangential air inlets are arranged on the cylindrical later surface of a cyclone cylinder body (20), an exhaust pipe (504) is positioned on the cylindrical top surface of the cyclone cylinder body (20), and the tangential air inlets have equal cross sectional area, are positioned on the same horizontal surface and are arranged relatively to the central shaft of the cyclone cylinder body (20) according to equal phase difference. The invention has the advantages that the short-circuit flow of the exhaust pipe is less than that of a single-gas inlet cyclone separation device, the axial symmetry of a flow field is more excellent, and the proportion that small-granule dust directly enters an exhaust port without cyclone separation after entering a separation chamber is reduced.
Description
Technical field
The present invention relates to a kind of multistage cyclone separation device that is used for dust catcher.
Background technology
The cleaner multilevel cyclone separator is to utilize air that cyclonic principle will contain dust or solid particle tentatively to filter out the bulky grain dust by the one-level cyclone separator of upstream; secondary cyclone separator by the downstream further filters removal granule dust again, thereby reaches the purpose that purifies air.In the prior art, as U.S. Patent No. 4,373,228 disclose a kind of vacuum cleaner that adopts the secondary cyclone separator, the structure of its separator is one-level cyclone separator that comprises the upstream at least and the secondary cyclone separator that is positioned at the downstream, the one-level cyclone separator comprises the outer bucket with the integrated chamber of one-level, and the secondary cyclone separator comprises a plurality of Whirlwind barrels.As shown in Figure 2, Whirlwind barrel is frusto-conical, be that a upper end is cylinder 22a, the lower end is cone 22b, tapered distal end has ash discharging hole 22c and leads to a dust storage chamber (not showing on the figure), described Whirlwind barrel upper end has an air inlet 21 and an exhaust outlet 505, described Whirlwind barrel inner chamber forms cyclone separating chamber, exhaust ports is provided with the blast pipe 504 and the exhaust passage of portion's formation within it of tube wall sealing both ends open, and a port of blast pipe inserts in the Whirlwind barrel along the direction of axle 24.
The separator of this form is owing to have only an air inlet to advance to contain the air-flow of dust, airflow field in cylindrical shell is an asymmetry, in the bigger vortex core distortion of the indoor generation of cyclonic separation, when outer eddy flow arrives the ash discharging hole upset of awl bottom, the eddy current that the vortex core distortion produces can be rolled the granule dust that drops in the dust storage chamber at the ash discharging hole place, makes its air-flow that is risen take blast pipe out of; And the short-circuit flow at blast pipe place is bigger, and this does not also just directly enter blast pipe with a part of granule dust just entering the separation chamber with rotational flow separation; Another part granule ash just breaks away from the cyclonic separation zone and enters blast pipe through short-circuit flow just entering the separation chamber from air inlet.These factors have restricted the separative efficiency of secondary separation device, thereby have reduced whole efficiency of dust collection.
Summary of the invention
Problem to be solved by this invention is exactly: at the defective of above prior art, propose a solution, can improve or suppress the vortex core metaboly of air-flow, improve the separative efficiency of whirlwind tube, thereby improve the dust collection capacity of dust catcher.
For solving above technical problem, the solution of the present invention is: a kind of multistage cyclone separation device of dust catcher, comprise upstream one-level cyclone separator, downstream secondary cyclone separator, with the gas channel that is used to be connected described upstream one-level cyclone separator and downstream secondary cyclone separator, described upstream one-level cyclone separator comprises that the cylindrical outer bucket and the mesh that have tangent air inlet filter dust bucket, described downstream secondary cyclone separator comprises a cyclone filter, dirt gas separate cover and central tube, described cyclone filter comprises at least one Whirlwind barrel, the Whirlwind barrel cylindrical sides has at least two tangent air inlets and an exhaust outlet that is positioned at the Whirlwind barrel cylindrical top surface, and a plurality of tangent air inlet areas of section equate, are in same horizontal plane and arrange according to the phase difference of equalization about the Whirlwind barrel central shaft.The benefit that at least two tangent air inlets are set is: be divided into two strands with overdraught after making dusty gas enter Whirlwind barrel, and these several strands of air-flows are same clockwise and flow.
Further, described gas channel is by the mesh inwall of mesh filtration dust bucket, and the lower end cylindrical outer wall of central tube outer wall and cyclone filter constitutes.
Further, described Whirlwind barrel upper part is cylindrical, and end portion is taper, and both ends open, lower ending opening are partly facing to described central tube opening.The tangent air inlet of each Whirlwind barrel lateral surface all links to each other with a runner that is arranged on around the cyclone filter outer rim of gas channel.
Further, because the number of Whirlwind barrel is at least one,, and be set up in parallel around the axle center of central tube so preferably its quantity is 6.
Further, each Whirlwind barrel cylindrical sides has at least two tangent air inlets, can be preferably 2 to 5 tangent air inlets according to actual needs.
Further, described cyclone separator bottom has separated another runner of gas channel, this runner passes through the central area of cyclone separator, and is divided into the sub-runner of same number according to the number of Whirlwind barrel, and links to each other with the inboard air inlet of each Whirlwind barrel respectively.
Further, cylindrical outer bucket and mesh filter the coaxial placement of dust bucket, and described mesh filtration dust bucket to be that the mesh section diameter is opened in the upper end big, lower end control of dust section diameter is little, the centre has the cylindrical shell of big top and small bottom tubaeform dust-break umbrella.
Further, dirt gas separate cover comprises the blast pipe of more than one circumferential sealing both ends open, and it is indoor that the coaxial and end of blast pipe and Whirlwind barrel extends into cyclonic separation, and the blast pipe internal diameter is greater than Whirlwind barrel taper small end ash discharging hole opening diameter.
Further, central tube connects the dust bucket part of cyclone filter and mesh filtration dust bucket lower end.
Cyclone separator flow field experimental study by many tangential admissions mouth shows: have a plurality of tangential admission mouth cyclone separator blast pipe short-circuit flows to be less than single air inlet cyclone separator, enter the ratio that directly enters exhaust outlet without rotational flow separation enters dust storage chamber behind the separation chamber thereby reduced the granule dust.The axial symmetry in the cyclone separator flow field of many tangential admissions mouth is better than the cyclone separator of single tangential admission mouth simultaneously; the cyclone separator vortex core of many tangential admissions mouth is out of shape little and installs the interior air-flow tangential velocity about 6% of cyclone separator that interior air-flow tangential velocity is higher than single tangential admission mouth; it is also slow to decay in accurate free vortex district, and the ratio that makes eddy flow granule dust when arriving the cone bottom be separated to dust storage chamber from air-flow improves greatly.The cyclone separator of many tangential admissions mouth more helps improving efficiency of dust collection and reduces device resistance than the cyclone separator of single tangential admission mouth.
Description of drawings
Fig. 1 is a radially schematic diagram of the multistage cyclone separation device used of the dust catcher of prior art.
Fig. 2 is the axial schematic diagram of multistage cyclone separation device that the dust catcher of prior art is used.
Fig. 3 is a radially schematic diagram of the multistage cyclone separation device used of dust catcher of the present invention.
Fig. 4 is the axial schematic diagram of multistage cyclone separation device that dust catcher of the present invention is used.
Fig. 5 is the 3D exploded view of concrete structure of the cyclone separator of the embodiment of the invention.
Fig. 6 is the cyclone separator vertical view of the embodiment of the invention.
Fig. 7 is the A-A profile of the embodiment of the invention.
Fig. 8 is the schematic diagram of dust catcher of the present invention with the cyclone separator that contains three air inlets.
Fig. 9 is the schematic diagram of dust catcher of the present invention with the cyclone separator that contains four air inlets.
1-one-level cyclone separator among the figure, 2-secondary cyclone separator, 3-gas channel, the 4-mesh filters dust bucket, 401-mesh, 402-dust bucket, 403-dust-break umbrella, 5-cyclone separator, 501a-Whirlwind barrel outside air inlet, the inboard air inlet of 501b-Whirlwind barrel, 502-runner, the cylindrical outer wall of 503-cyclone filter lower end, the 504-blast pipe, 505-exhaust outlet, 6-dirt gas separate cover, the 7-sealing gasket, 8-control of dust connecting cylinder, 9-bottom, air inlet on the outer bucket of 100-, the outer bucket of 101-, 102-annular shading ring, the 20-Whirlwind barrel, 21 (a, b, c, d)-tangent air inlet of Whirlwind barrel side, the 22-Whirlwind barrel, the 22a-cylinder, the 22b-cone, 22c-ash discharging hole, 23-cyclone separating chamber, 24-rotating shaft, the 25-runner that goes in ring.
The specific embodiment
Below in conjunction with accompanying drawing, specify the utility model:
Whirlwind barrel structural representation in the multistage cyclone separation device of using for the dust catcher of prior art as depicted in figs. 1 and 2.This Whirlwind barrel (20) cylinder (22a) is provided with a tangent air inlet (21) and exhaust outlet (505); the inner chamber (23) of Whirlwind barrel (20) forms cyclone separating chamber; granule ash through cyclonic separation enters the dust storage chamber (not shown) by terminal ash discharging hole (22c), and clean air is discharged by exhaust outlet (505) through blast pipe (504).
Whirlwind barrel structural representation in Fig. 3 and the multistage cyclone separation device of using for dust catcher of the present invention shown in Figure 4.This Whirlwind barrel (20) is frusto-conical; form by cylinder (22a) and cone (22b); this Whirlwind barrel (20) cylinder (22a) is provided with two air inlets (501a); (501b) and exhaust outlet (505); the cyclone separating chamber (23) of Whirlwind barrel (20) forms cyclone separating chamber; granule ash through cyclonic separation enters the dust storage chamber (not shown) by terminal ash discharging hole (22c), and clean air is discharged by exhaust outlet (505) through blast pipe (504).
In the present embodiment, two air inlets (501a) on the described Whirlwind barrel (20) and (501b), area of section equates, the position is that rotating shaft (24) phase difference 180 degree with Whirlwind barrel distribute, and with the tangential direction import, so air-flow is same clockwise rotation after entering Whirlwind barrel (20).The purpose of Fang Zhiing is effectively to reduce the sectional area of air inlet like this, improve tangential intake velocity, make the axial symmetry in the flow field be optimized, reduce the air-flow that directly enters blast pipe in the flow field without cyclonic separation with short-circuit flow, and effectively alleviate the decay in accurate free vortex district, and then further improve separative efficiency.
Fig. 3 is for using the dust catcher of multistage cyclone separation device of the present invention.This dust catcher is a secondary cyclonic separation dust catcher, comprises the one-level cyclone separator (1) that is positioned at the upstream and is positioned at the secondary separation device (2) in one-level cyclone separator downstream and the gas channel (3) that is communicated with one-level cyclone separator (1) and secondary separation device (2).
One-level cyclone separator (1) has the i.e. outer bucket (101) of one-level Whirlwind barrel; the sidewall of outer bucket (101) is provided with a tangential air inlet (100); dust-contained airflow is bucket (101) outside this air inlet tangentially enters; the tangential purpose that is provided with of air inlet is a bucket outside the feasible dust-contained airflow that enters from this air inlet tangentially enters; so that in the one-level separator, form eddy current, thereby the larger particles dust in the dust-contained airflow is separated for the first time.
Outer bucket (101) center being positioned at one-level separator (1) is provided with a mesh and filters dust bucket (4), and mesh filters dust bucket (4) and (101) the coaxial placement of outer bucket, and its top links to each other with outer bucket (101) top one annular shading ring (102).The mesh filter (401) that the air communication of upstream cyclone separator (1) preliminary purification is crossed mesh filtration dust bucket (4) top enters downstream secondary cyclone separator (2) via gas channel (3).Gas channel (3) is arranged between mesh filter (401) and secondary cyclone separator (2) and the central tube (8).
It is an integral body that mesh filters dust bucket (4); form by several portions; top is mesh filter (401); its effect is when flowing through mesh (401) through the dust-contained airflow after the primary separation; still there being residual oarse-grained relatively dust to be blocked in the outer bucket (101) of primary separation device (1); the bottom is dust bucket (402); the bottom (9) of dust bucket (402) outer wall and outer bucket (101) inwall and outer bucket bottom is formed a space; it act as the dust of collecting primary separation, and dust bucket (402) inwall is collected the granule dust that separates through secondary separation device (2) with the space that bottom (9) is formed.
Secondary cyclone separator (2) comprises the sealing gasket (7) that a cyclone separator (5) and a dirt gas separate cover (6) and between seal.Cyclone separator (5) contains at least one Whirlwind barrel (20), the number of Whirlwind barrel (20) is preferably 5 in the present embodiment, can certainly be other any suitable numbers, have cross-sectional sizes on the sidewall of Whirlwind barrel (20) and equate, the rotating shaft of the relative cylindrical shell of phase place (240) becomes 180 degree to place to be in two tangent air inlets (501a) of same horizontal plane and (501b).Enter the air inlet (501a) of each Whirlwind barrel (20) on the cyclone separator (5) and (501b) through the dust-contained airflow after the primary separation by gas channel (3); the air-flow that contains less relatively particle dust in the cyclone separating chamber (23) of Whirlwind barrel (20) after the eddy current high-speed separation; the granule dust is entered in the dust bucket (402) by the ash discharging hole (22c) of Whirlwind barrel (20) bottom, and the exhaust outlet (505) of air-flow on blast pipe (504) after purifying enters the cyclone separator outside.
In order to make the feasibility with assembly technology, between cyclone separator (5) and dust bucket (402), a control of dust connecting cylinder (8) is set, this cylindrical shell and cyclone separator (5) and dust bucket (402) are tightly connected, for the convenience on making, blast pipe (504) can be set directly on the dirt gas separate cover (6) simultaneously.Be provided with sealing gasket (7) between cyclone separator (5) and the dirt gas separate cover (6).
For allow air-flow through primary separation enter smoothly the air inlet (501a) of at least one Whirlwind barrel (20) on the cyclone separator (5) and (501b) in, gas channel (3) is in that to enter Whirlwind barrel (20) preceding, two stock runners have been divided into, one is arranged on the belt runner (25) of each cyclone separator (5) outer rim, this belt runner (25) is connected with the tangent air inlet (501a) in each each cyclone separator (5) outside respectively, another thigh is arranged in another runner (502) that cyclone separator (5) lower end (503) portion separates, this another strand air-flow is from the central area of runner (502) through cyclone separator (5), the sub-runner that is made into equal number according to the number average mark of Whirlwind barrel (20) enters another tangent air inlet (501b) of Whirlwind barrel (20) again, while cyclone separator (5) and below control of dust connecting cylinder (8), the space that dust bucket (402) is formed is still airtight, so just reach the purpose of mean allocation air-flow, allow the air quantity that advances from each tangent air inlet equate.
Fig. 8 and Fig. 9 are respectively the schematic diagram of the multistage cyclone separation device that dust catcher with 3 and 4 tangent air inlets uses, a plurality of tangent air inlet 21 (a, b, c, d) also be that area of section equates, be in same horizontal plane and arrange according to the phase difference of equalization about Whirlwind barrel (20) central shaft.Belong to protection scope of the present invention equally.
More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop on protection scope of the present invention.
Claims (10)
1. the multistage cyclone separation device of a dust catcher, comprise upstream one-level cyclone separator (1), downstream secondary cyclone separator (2), with the gas channel (3) that is used to be connected described upstream one-level cyclone separator (1) and downstream secondary cyclone separator (2), described upstream one-level cyclone separator (1) comprises that the cylindrical outer bucket (101) and the mesh that have tangent air inlet filter dust bucket (4), described downstream secondary cyclone separator (2) comprises a cyclone filter (5), dirt gas separate cover (6) and central tube (8), it is characterized in that: described cyclone filter (2) comprises at least one Whirlwind barrel (20), Whirlwind barrel (20) cylindrical sides has at least two tangent air inlet (501a, 501b) with a blast pipe (504) that is positioned at Whirlwind barrel (20) cylindrical top surface, and a plurality of tangent air inlet areas of section equate, are in same horizontal plane and arrange according to the phase difference of equalization about Whirlwind barrel (20) central shaft.
2. the multistage cyclone separation device of dust catcher according to claim 1 is characterized in that: be provided with sealing gasket (7) between cyclone separator (5) and the dirt gas separate cover (6).
3. the multistage cyclone separation device of dust catcher according to claim 1, it is characterized in that: described gas channel (3) is by the mesh inwall of mesh filtration dust bucket (4), and the lower end cylindrical outer wall (503) of central tube (8) outer wall and cyclone filter (5) constitutes.
4. the multistage cyclone separation device of dust catcher according to claim 1, it is characterized in that: described Whirlwind barrel (20) upper part is cylindrical, and end portion is taper, both ends open, lower ending opening are partly facing to described central tube (8) opening.
5. according to the multistage cyclone separation device of claim 1 or 4 described dust catchers, it is characterized in that: the tangent air inlet homogeneous of each Whirlwind barrel (a 20) lateral surface belt runner (25) with gas channel (3) is connected that is arranged on around each cyclone filter (5) outer rim links to each other.
6. the multistage cyclone separation device of dust catcher according to claim 5, it is characterized in that: the number of described Whirlwind barrel (20) is 6, and the axle center around central tube (8) is set up in parallel, and each Whirlwind barrel (20) cylindrical sides has 3 to 5 tangent air inlets.。
7. the multistage cyclone separation device of dust catcher according to claim 1, it is characterized in that: described cyclone separator (5) lower end (503) portion has separated another runner (502) of gas channel (3), this runner (502) is through the central area of cyclone separator (5), and be divided into the sub-runner of same number, and link to each other with the inboard air inlet (501b) of each Whirlwind barrel (20) respectively according to the number of Whirlwind barrel (20).
8. the multistage cyclone separation device of dust catcher according to claim 1, it is characterized in that: cylindrical outer bucket (101) and mesh filter the coaxial placement of dust bucket (4), and mesh filters dust bucket (4), and to open the mesh section diameter big for the upper end, lower end control of dust section diameter is little, and the centre has the cylindrical shell of big top and small bottom tubaeform dust-break umbrella (403).
9. the multistage cyclone separation device of dust catcher according to claim 1, it is characterized in that: described dirt gas separate cover (6) comprises the blast pipe (504) of more than one circumferential sealing both ends open, coaxial and the end of blast pipe (504) and Whirlwind barrel (20) extends in the cyclone separating chamber (23), and blast pipe (504) internal diameter is greater than Whirlwind barrel (20) taper small end ash discharging hole (22c) opening diameter.
10. the multistage cyclone separation device of dust catcher according to claim 1 is characterized in that: dust bucket (402) part of described central tube (8) connection cyclone filter (5) and mesh filtration dust bucket (4) lower end.
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| CN200910030940A CN101862165A (en) | 2009-04-20 | 2009-04-20 | Multistage cyclone separation device of dust collector |
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| CN200910030940A CN101862165A (en) | 2009-04-20 | 2009-04-20 | Multistage cyclone separation device of dust collector |
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Application publication date: 20101020 |