CN202667018U

CN202667018U - Cyclone dust collector capable of reducing secondary dust raise

Info

Publication number: CN202667018U
Application number: CN 201220248713
Authority: CN
Inventors: 郭丰亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2013-01-16
Anticipated expiration: 2022-05-30

Abstract

The utility model discloses a cyclone dust collector capable of reducing secondary dust raise and belongs to the technical field of environment-friendly dust separation. The cyclone dust collector comprises an air inlet pipe, an exhaust pipe, a cylindrical cyclone and a conical dust collector, the air inlet pipe and the exhaust pipe are arranged on one side and the top end of the cyclone, and the dust collector is arranged at the lower end of the cylindrical cyclone. A small cone and a small cylinder are additionally arranged at the bottom of the dust collector, the aperture of the upper end of the small cone is smaller than that of the small cylinder, and an annular slit is formed between the small cone and the small cylinder. Therefore, most dust can be exhausted from the annular slit while another small part of dust is exhausted from the small cone to form a double-dust-exhaust structure, dust quantity entering eddy current and turbulent flow from the bottom of the cone can be reduced, dust carried away during secondary dust raise is reduced to the maximum extent, dedusting efficiency of the cyclone dust collector is improved, and better environment-friendly effect can be achieved.

Description

A kind of cyclone dust collectors that reduce secondary dust phenomenon

Technical field

The utility model relates to the environment-friendly type separation technology field of dust, particularly relates to a kind of cyclone dust collectors that reduce secondary dust phenomenon.

Background technology

Along with the attention of people to environmental quality, new technology, new technology, new equipment are all polluted, are reduced discharging and be the target research and development to reduce.Deduster is exactly a kind of reduction of discharging, oligosaprobic product.Be used at present the atmosphere dedusting and mainly contain three class dedusting technologies: electric precipitation, Bag filter dedusting and cyclone dust removal.Owing to cyclone duster structure is simple, five actuating units drive, can adapt to the favor that the advantages such as adverse circumstances, investment and the operating costs such as high temperature, high pressure and the medium that is corrosive are few are subject to people.Cyclone dust collectors are the air-flows that utilize High Rotation Speed in rotating cylinder, make grit produce centrifugal and realize separating of dust and air-flow, but existing cyclone dust collectors to the deposition capability of fine powder a little less than, cause to be prone to secondary dust phenomenon.

The secondary dust refers to separate the gas that the particle that deposits on the wall upwards flowed and takes away, and enters into clean gas flow and discharges the phenomenon of deduster, has a strong impact on the efficiency of dust collection of cyclone dust collectors.

The factor that affects the cyclone dust collectors reentrainment of dust has a lot, and wherein principal element has: the eddy current that the outer eddy flow of the fine powder of cone surface deposition, the cone of flowing through produces when cone base upwards reverses and conical section tangential velocity increase the turbulent flow that produces.Secondary dust phenomenon all exists at cylinder and the cone of cyclone dust collectors, but the secondary dust of conical section is the most serious, and the dust amount of carrying secretly that causes accounts for from the overwhelming majority of blast pipe carry over total amount.Cone base is the enrichment region of fine powder, also is the multiple district of eddy current and turbulent motion simultaneously, adds the spatial constraints of cone base, and this zone just must become the serious zone of secondary dust.

The utility model content

The technical problem that the utility model mainly solves provides a kind of cyclone dust collectors that reduce secondary dust phenomenon, can reduce the discharge capacity that existing cyclone dust collectors cone base secondary is raised wind, so that Exhaust Gas is cleaner.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of cyclone dust collectors that reduce secondary dust phenomenon are provided, comprise: air inlet pipe, blast pipe, cylindrical cyclone and conical cinder catcher, described air inlet pipe and blast pipe are located at respectively a side and the top of cyclone, described cinder catcher is located at cylindrical cyclone lower end, below described cone cinder catcher, set up a small cylinder, and be provided with a small cone body in small cylinder inside.

In preferred embodiment of the utility model, the up big and down small and upper end bore of the bore of described small cone body forms the annulus less than the cylinder bore between described small cone body and the small cylinder.

In preferred embodiment of the utility model, the height of described small cone body and small cylinder is the same, accounts for 1/4 ~ 1/3 of the conical cinder catcher height in upper end.

The beneficial effects of the utility model are: the utility model improves at the architecture basics of traditional cyclone dust collectors, so that dropping in the annulus, most of dust discharges, another fraction dust is discharged from little centrum, thereby formed double grey structure, reduce the Dust Capacity that cone base enters into eddy current and turbulent flow, reduced to greatest extent the dust of taking away because of the secondary dust.

Description of drawings

Fig. 1 is a kind of structural representation that reduces cyclone dust collectors one preferred embodiment of secondary dust phenomenon of the utility model;

Fig. 2 is that the utility model is to the structure for amplifying schematic diagram of cyclone dust collectors improvement part;

The mark of each parts is as follows in the accompanying drawing: 1, blast pipe, 2, air inlet pipe, 3, cylindrical cyclone, 4, conical cinder catcher, 5, small cylinder, 6, small cone body, 7, the annulus, I, improvement part, 8, upper rotational gas flow, 9, lower rotational gas flow.

The specific embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.

See also Fig. 1 and Fig. 2, the utility model embodiment comprises: air inlet pipe 2, blast pipe 1, cylindrical cyclone 3, conical cinder catcher 4 and improvement part I, air inlet pipe 2 and blast pipe 1 are located at respectively a side and the top of cyclone 3, cinder catcher 4 is located at cylindrical cyclone 3 lower ends, improvement part I comprises: small cylinder 5 and small cone body 6, small cylinder 5 is positioned at conical cinder catcher 4 bottoms, and is provided with a small cone body 6 in small cylinder 5 inside.

Further, the up big and down small and upper end bore of the bore of small cone body 6 forms annulus 7, so that most of dust is discharged less than cylinder 5 bores from slit 7 between small cone body 6 and the small cylinder 5.

Further, small cone body 6 is the same with the height of small cylinder 5, accounts for 1/4 ~ 1/3 of conical cinder catcher 4 height in upper end, is conducive to the deposition of dust.

The utility model operation principle: when dusty gas arrives cinder catcher 4 bottom from blast pipe 2 behind circulator 3, most of dust is by discharging in the annulus 7, and most of lower rotational gas flow 9 enters in the roundlet centrum 6, the air-flow that rotates in the small cone body 6 can form the upper rotational gas flow 8 upwards of turning back, and discharges from blast pipe 1.

Be different from prior art, the utility model is set up a small cone body 6 and a small cylinder 5 in the cinder catcher bottom, wherein the upper end bore of small cone body 6 is arranged to the bore less than cylinder 5, so that form annulus 7 between the two, thereby most of dust is discharged from annulus 7 first, improve the efficiency of dust collection of cyclone dust collectors, reach better environment protecting.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. cyclone dust collectors that reduce secondary dust phenomenon, comprise: air inlet pipe, blast pipe, cylindrical cyclone and conical cinder catcher, described air inlet pipe and blast pipe are located at respectively a side and the top of cyclone, described cinder catcher is located at cylindrical cyclone lower end, it is characterized in that, below described cone cinder catcher, set up a small cylinder, and be provided with a small cone body in small cylinder inside.

2. a kind of cyclone dust collectors that reduce secondary dust phenomenon according to claim 1 is characterized in that, the up big and down small and upper end bore of the bore of described small cone body forms the annulus less than the cylinder bore between described small cone body and the small cylinder.

3. a kind of cyclone dust collectors that reduce secondary dust phenomenon according to claim 1 is characterized in that, the height of described small cone body and small cylinder is the same, account for 1/4 ~ 1/3 of the conical cinder catcher height in upper end.