CN1025593C

CN1025593C - High-speed rotative dynamic air filter

Info

Publication number: CN1025593C
Application number: CN 90107632
Authority: CN
Inventors: 黄佑生; 孙茂棠; 刘闽京
Original assignee: Beijing Institute of Technology BIT
Current assignee: Beijing Institute of Technology BIT
Priority date: 1990-09-14
Filing date: 1990-09-14
Publication date: 1994-08-10
Anticipated expiration: 2005-09-14
Also published as: CN1059852A

Abstract

The present invention relates to a high-speed rotary type dynamic air filter, which is composed of a cylindrical outer casing, rotors which are arranged in the outer casing and are connected with a shaft, a support sheet which supports a transmission shaft, a flow guide cone, an air input cylinder which is connected with the flow guide cone and has a dust collecting volute, and an external-connected channel body, wherein all the rotors are composed of spiral blades; spiral dust-collecting channel is arranged on the inner wall of the outer casing. The present invention not only has the advantage of high filtering efficiency, but also has the advantages of small volume and simple structure, being an advanced air collecting filter.

Description

High-speed rotative dynamic air filter

The present invention is the air filter that is used for general vehicle and military vehicle engine, can be used to the air that purifying engine is used.

Present general vehicle and military vehicle, all the filtering efficiency of air filter and the size of the dust after the filter there is very strict specification requirement, what U.S. Pat of the prior art-4832709 and US-4255174 adopted is cyclone separating, the former is mainly by shell, rotor and external passage body are formed, before rotor is, back guide vane combines with straight sheet blade, the straight sheet blade-section of this rotor makes the big leap ahead of rotor length under same filtering efficiency condition, thereby strengthened the volume of cleaner, improved cost, and dust collect plant is the ring-type circular groove of opening in the enclosure, dust collecting effect is poor, for the minimizing secondary gas flow loses the method that the rotor outer rim that is adopted is wrapped with fine wire, increased the complexity of technology.The latter's blade does not rotate, thereby air-flow is when producing vortex, and flow losses are bigger.

The objective of the invention is to overcome the deficiency that has cleaner now a kind of rotary dynamic air filter with high speed rotational blade is provided, dust laden air is flowed through behind the rotating vane of this cleaner, dust is under action of centrifugal force and thrown to blade edge at a high speed, after the spiral dust collecting trough collection on the shell, cause outside the shell, air after filtering flows to the output cleaner along armature spindle, improved the filtering efficiency of air greatly and reduce to filter after the size of dust size.And the aerodynamic loss when having reduced gas flow.

This high-speed rotative dynamic air filter, by cylinder type shell 1, be contained in the shell 1 and link to each other with axle 5 by rotor 3, pad 12, bearing compressing member 14, the rotor assembly that bearing 11 and pressing plate 10 are assembled into, the support chip 19 and the deflection cone 22 of support drive motor 7 and axle 5, the gas transmission tube 18 of the band dust volute 20 that links to each other with deflection cone 22, the external passage body 6 that links to each other with shell 1 is formed, it is characterized in that: the blade 17 of rotor 3 all is a helical form, blade 17 is at least six, have control of dust conduit 2 on shell 1 inwall, control of dust conduit 2 is a spirality, control of dust conduit 2 is no less than three, have at least three cannelures 21 to join between the control of dust conduit 2, blade 17 is opposite with the hand of spiral of control of dust conduit 2, the helical angle of blade 17 is 15 °～50 °, the helical angle of control of dust conduit 2 is 0 °～65 °, dust volute exports 15 places the anti-adverse current bag 16 of rubbery membrana dermalis is housed, and in the external passage body 6 CD-ROM drive motor 7 is housed.

This cleaner not only filtering efficiency height and volume is little, simple in structure, the energy that gas is lost when filtering is less, be easy to product seriation, easy to assembly on engine, the installation of cleaner and less to the performance impact of engine has stronger auto purification ability, thereby the maintenance interval of cleaner is prolonged greatly.

Concrete structure of the present invention is provided by accompanying

drawing

1,2,3,4,5,6,7,8,9,10,11,12,13,14.

Fig. 1 is the high-speed rotative dynamic air filter fundamental diagram.

Fig. 2 is for rotating the dynamic air filter structure chart at a high speed.

Fig. 3 is the high speed rotation dynamic air filter structure chart of band CD-ROM drive motor.

Fig. 4 is a helical blade type rotor front view.

Fig. 5 is a helical blade type rotor-side view.

Fig. 6 is the housing front view of band spirality dust collecting trough.

Fig. 7 is the housing C-C sectional view of band spirality dust collecting trough.

Fig. 8 is rotor and housing all-in-one-piece front view.

Fig. 9 is rotor and housing all-in-one-piece side view.

Figure 10 is the front view of the anti-adverse current bag of rubbery membrana dermalis.

Figure 11 is the vertical view of the anti-adverse current bag of rubbery membrana dermalis.

Figure 12 is the side view of the anti-adverse current bag of rubbery membrana dermalis.

Figure 13 is the A-A sectional view of the anti-adverse current bag of rubbery membrana dermalis.

Figure 14 is the B-B sectional view of the anti-adverse current bag of rubbery membrana dermalis.

Primary structure is among the figure: shell 1, control of dust conduit 2, rotor 3, bearing 4, axle 5, external passage body 6, CD-ROM drive motor 7, lid 8, collar 9, pressing plate 10, bearing 11, pad 12, nut 13, bearing compressing member 14, dust volute outlet 15, rubbery membrana dermalis is prevented adverse current bag 16, blade 17, gas transmission tube 18, support chip 19, dust volute 20, cannelure 21, deflection cone 22, dust exhausting hole 23.

Below in conjunction with accompanying drawing the present invention is described in detail.

The dynamic air filter of this high-speed rotary, by cylinder type shell 1, install in the enclosure and link to each other with axle 5 by rotor 3, pad 12 bearing compressing members 14, the rotor assembly that bearing 11 and pressing plate 10 are assembled into, can be contained in after rotor assembly has assembled on the axle that is designed to special shape and carry out static balance and dynamic balancing, after reaching the balance quality requirement, can totally push in the housing vertically rotor, fastening nut 13 a complete mechanism, the clamp nut of axle 5, bearing 4 and axle right-hand member all is installed in the interior cylindric tube of housing 1 in advance.The support chip 19 and the deflection cone 22 of support drive motor 7 and axle 5, the gas transmission tube 18 of the band dust volute 20 that links to each other with deflection cone, the external passage body 6 that links to each other with shell is formed, the blade 17 of rotor all is a helical form, blade is at least six, have control of dust conduit 2 on the outer casing inner wall, the control of dust conduit is a spirality, the control of dust conduit is no less than three, have at least three cannelures 21 to join between the control of dust conduit, blade is opposite with the hand of spiral of control of dust conduit, and the helical angle of blade is 15～50 °, control of dust conduit helical angle is 0～65 °, and the anti-reverse bag 16 of rubbery membrana dermalis is equipped with in dust volute exit 15; As shown in Figure 2, air-breathing and when rotating, the air of required purification is entered in the cleaner when the outer sending and receiving motivation of blade rotor, air is flowed through has a pressure to fall behind the rotating vane, the rotor outlet direction forms negative pressure, be unfavorable for the discharge of dust, this moment can be with the outlet of dust volute vertically downward, and the anti-adverse current bag of rubbery membrana dermalis is installed on mouth, after dust accumulation some, rely on gravity to overcome the epithelium thrust that negative pressure causes, epithelium is opened, dust is discharged by the epithelium opening part.Also can adorn CD-ROM drive motor 7 in the external passage body 6 of high-speed rotative dynamic air filter, by electric power, fluid power or machine driving, modes such as high-speed gas impact obtain power, this moment, dust was collected under action of centrifugal force in the spirality dust collecting trough on the shell inner cavity, move axially to the rotor outlet place and discharge through dust volute, or directly penetrate dust exhausting hole 23 dust discharges on the housing along the spirality dust collecting trough of housing inner chamber, rotor of the present invention is owing to all be made up of helical blade, the length of rotor has shortened greatly, thereby reduced the volume of cleaner, reduce cost, thereby directly had the ability that spirality control of dust conduit has improved control of dust on the inner chamber of shell.

Claims

1, a kind of high-speed rotative dynamic air filter, by cylinder type shell 1, be contained in the shell 1 and link to each other with axle 5 by rotor 3, pad 12, bearing compressing member 14, the rotor assembly that bearing 11 and pressing plate 10 are assembled into, the support chip 19 and the deflection cone 22 of support drive motor 7 and axle 5, the gas transmission tube 18 of the band dust volute 20 that links to each other with deflection cone 22, the external passage body 6 that links to each other with shell 1 is formed, it is characterized in that: the blade 17 of rotor 3 all is a helical form, blade 17 is at least six, have control of dust conduit 2 on shell 1 inwall, control of dust conduit 2 is a spirality, control of dust conduit 2 is no less than three, have at least three cannelures 21 to join between the control of dust conduit 2, blade 17 is opposite with the hand of spiral of control of dust conduit 2.

2, high-speed rotative dynamic air filter as claimed in claim 1 is characterized in that: the helical angle of blade 17 is 15 °～50 °, and the helical angle of control of dust conduit 2 is 0 °～65 °.

3, high-speed rotative dynamic air filter as claimed in claim 1 or 2 is characterized in that: dust volute exports 15 places the anti-adverse current bag 16 of rubbery membrana dermalis is housed.

4, high-speed rotative dynamic air filter as claimed in claim 1 or 2 is characterized in that: in the external passage body 6 CD-ROM drive motor 7 is housed.