CN102688811A

CN102688811A - Cyclone dust collector with secondary flow

Info

Publication number: CN102688811A
Application number: CN2012101718848A
Authority: CN
Inventors: 郭丰亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2012-09-26

Abstract

The invention discloses a cyclone dust collector with secondary flow, and belongs to the technical field of environment-friendly dust separation. The cyclone dust collector comprises a gas inlet pipe, an exhaust pipe, a cylindrical cyclone and a conical dust collector, the gas inlet pipe and the exhaust pipe are respectively arranged on one side and on the top of the cyclone, the dust collector is disposed at the lower end of the cylindrical cyclone, a dust discharge outlet is arranged at the lower end of the dust collector, a sandwich layer is added to the outside of the exhaust pipe, a part of the sandwich layer is placed in the cyclone while another part of the sandwich layer extends out of the upper end of the dust collector, and the height of the sandwich layer is smaller than that of the exhaust pipe. By the aid of the cyclone dust collector in the mode, the range of an upper dust ring can be effectively reduced, particles are prevented from overflowing from an exhaust port, short-circuit flow is stopped to the greater extent, and dust collection efficiency of equipment is improved.

Description

The cyclone dust collectors of band Secondary Flow

Technical field

The present invention relates to the environment-friendly type separation technology field of dust, particularly relate to a kind of cyclone dust collectors with Secondary Flow.

Background technology

Cyclone dust collectors have been applied to since the commercial production, the history in existing over one hundred year, and the above particulate efficiency of 5 ~ 10 μ m is higher for capturing, separating.Because it is less, simple and reliable for structure that energy consumption compares, and is widely used in industrial departments such as metallurgy, chemical industry, oil, building, machinery, electric power, light textile, food.Cyclone dust collectors are to utilize centrifugal force that the dusty gas rotation time produced with dust isolated a kind of dry type gas-solid separating device from air-flow; Compare with dedusting methods such as filtration, sedimentations, that cyclone dust collectors have is simple in structure, with low cost, can under high temperature and high pressure environment, work, the separative efficiency advantages of higher.Therefore, being widely used in industries such as energy source and power, chemical industry, is to use one of the widest gas-solid separating device at present.

The mechanism of particle separation is in the cyclone dust collectors: particle is owing to the resistance that action of centrifugal force overcomes air-flow moves to wall, and after the arrival wall was neighbouring, because less turbulent flow in the boundary layer, particle can enter into ash bucket along wall, thereby obtained separating.Less than 5 μ m subparticles, because its suffered centrifugal force is less than the resistance of air-flow to it, therefore, this type particle is difficult to obtain separate for particle diameter.

In addition, phenomenons such as the short-circuit flow that exists in the cyclone dust collectors, upper dust-ring make solid particle not reduced the efficiency of dust collection of deduster by effective separation.The existence of upper dust-ring makes the dust that is separated in cylinder side wall that originally has been captured move up along outer tube wall earlier, move inward along top cover then, again along the outer wall of inner core to moving down, last short circuit and arranging from cyclone reduces efficiency of dust collection.Short-circuit flow and upper dust-ring phenomenon are particularly important in to the separation process of subparticle.

Summary of the invention

The technical problem that the present invention mainly solves provides a kind of cyclone dust collectors with Secondary Flow, can effectively reduce the scope of upper dust-ring, avoids from the overflowing of exhaust ports particle, thereby has stoped the generation of short-circuit flow largely.

For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of cyclone dust collectors with Secondary Flow are provided; Comprise: air inlet pipe, blast pipe, cylindrical cyclone and conical cinder catcher, said air inlet pipe and blast pipe are located at a side and the top of cyclone respectively, and cylindrical cyclone lower end is located at by said cinder catcher and its lower end is provided with ash discharging hole; Outside said blast pipe, increase by an interlayer; A said interlayer part places in the cyclone, and another part stretches out the deduster upper end, and it highly is lower than the blast pipe height.

In preferred embodiment of the present invention, said interlayer upper end is tilting to have the secondary air mouth.

The invention has the beneficial effects as follows: the present invention introduces one control air-flow at the blast pipe place, tangential in the stream field and radial velocity are carried out necessary control, can: the rotation of the dust-contained airflow that gets into by blast pipe in (1) acceleration cyclone; (2) reduce the friction of dust-contained airflow and escape pipe; (3) change the intensity that radial velocity strengthens the dust drive movement; (4) shortcut of isolation dust-contained airflow and blast pipe reduces short circuit.

Description of drawings

Fig. 1 is the structural representation of cyclone dust collectors one preferred embodiment of band Secondary Flow of the present invention;

The mark of each parts is following in the accompanying drawing: 1, air inlet pipe, 2, blast pipe, 3, cyclone, 4, cinder catcher, 5, ash discharging hole, 6, interlayer, 7, the secondary wind import.

The specific embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.

See also Fig. 1; The embodiment of the invention comprises: air inlet pipe 1, blast pipe 2, cylindrical cyclone 3, interlayer 6 and conical cinder catcher 4, and air inlet pipe 1 and blast pipe 2 are located at a side and the top of cyclone 3 respectively, and cinder catcher 4 is located at cylindrical cyclone 3 lower ends and its lower end is provided with ash discharging hole 5; Outside blast pipe 2, be provided with an interlayer 6; Interlayer 6 parts place in the cyclone 3, and another part stretches out the deduster upper end, and it highly is lower than blast pipe 2 height.

Further, interlayer 6 upper ends are tilting to have secondary air mouth 7, introduces ozone thus.

Be different from prior art, the present invention sets up an interlayer 6 outside existing blast pipe 2, introduces ozone from the external world through the secondary wind import 7 on the interlayer 6; Fresh air gets into cyclone 3 from the outside of interlayer 6 in cyclone 3; Form one control air-flow, tangential and radial velocity in the stream field are controlled, and make deduster not only can increase substantially the capacity gauge of cyclone dust collectors to superfine powder; And reduce the scope of upper dust-ring effectively; Avoid from the overflowing of exhaust ports particle, thereby stoped the generation of short-circuit flow largely, improve the efficiency of dust collection of equipment.

The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; 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 invention.

Claims

1. cyclone dust collectors with Secondary Flow, comprising: air inlet pipe, blast pipe, cylindrical cyclone and conical cinder catcher, said air inlet pipe and blast pipe are located at a side and the top of cyclone respectively; Cylindrical cyclone lower end is located at by said cinder catcher and its lower end is provided with ash discharging hole; It is characterized in that outside said blast pipe, increase by an interlayer, a said interlayer part places in the cyclone; Another part stretches out the deduster upper end, and it highly is lower than the blast pipe height.

2. the cyclone dust collectors of band Secondary Flow according to claim 1 is characterized in that, said interlayer upper end is tilting to have the secondary air mouth.