CN203452943U

CN203452943U - Secondary filter for primarily filtering air filled in air filter of gasoline engine

Info

Publication number: CN203452943U
Application number: CN201320590068.0U
Authority: CN
Inventors: 严华
Original assignee: CHONGQING WEIMA POWER MACHINE Co Ltd
Current assignee: Weima Agricultural Machinery Co ltd
Priority date: 2013-09-24
Filing date: 2013-09-24
Publication date: 2014-02-26
Anticipated expiration: 2023-09-24

Abstract

The utility model relates to a secondary air filter for primarily filtering air filled in an air filter of a gasoline engine. The secondary air filter comprises an air filter body, wherein air inlets and air outlets are formed in the air filter body; an air inlet plate is arranged at the bottom of the air filter body; a plurality of air inlets are formed in the air inlet plate; the air outlets are formed in one end of the air filter body in a length direction; an inner cavity of the air filter body is provided with a filter cartridge for filtering particle dust in the air; the filter cartridge is shaped as a cylinder with a hollow cavity; the hollow cavity is communicated with the air outlets. Through the secondary air filter, the filtered air can be introduced in the air filter of the gasoline engine through a flexible pipe, so that the air inlets of the air filter of the gasoline engine are far from the gasoline engine, and the primarily filtered air is clean; the air filled in a cylinder of the gasoline engine is filtered secondarily, so that the air is clean, and the combustion is stable; in addition, the air is filled from the lower part of the secondary filter, so that the situation that the water enters an air inlet channel during farming in rainy days or washing the machine to corrode other parts can be avoided.

Description

To entering the gas of gasoline engine air filter, carry out the secondary air filter of prefiltration

Technical field

The utility model relates to the gas handling system territory of internal-combustion engine, relates in particular to the secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter.

Background technique

Motor is wanted a large amount of air of inspiration in the course of the work, if the dust that air, without filtering, suspends in air is inhaled in cylinder, and will accelerating piston group and the wearing and tearing of cylinder.Larger particle enters between piston and cylinder, can cause serious " scuffing of cylinder bore " phenomenon, air-strainer is contained in the Carburetor of petrol engine or the place ahead of suction tude, plays the effect of dust, sand grains in filtering air, guarantees to enter enough, clean air in cylinder.For making petrol engine power large, must cylinder intake

Amount is many, reduces intake resistance, and this need to guarantee that each cross section of inlet flow is unimpeded,

Existing petrol engine only includes an air filter that is arranged on the Carburetor of petrol engine or the place ahead of suction tude conventionally, and for making petrol engine power large, the gas flow that just must guarantee to enter cylinder is abundant, reduces intake resistance.The intake resistance of air filter comprises the local resistance of filter element and the on-way resistance in (carburetor air hole) from air filter inlet hole to air outlet hole.Better its resistance of filtering effect of filter element is just larger, so, in order to reduce the local resistance of filter element, existing cleaner cartridge cleaner falls oarse-grained dust by filtering to enter in gas, thereby tiny particulate fraction enters cylinder, the wearing and tearing of accelerating piston group and cylinder, part is attached on filter element, stop up filter element, reduce and even make filter element lose the usefulness of filtration.

Model utility content

The problems referred to above that exist for prior art, the purpose of this utility model is to carry out prefiltration to entering the gas of gasoline engine air filter, reduces as far as possible the obstruction inefficacy that enters the fine particle in gas in cylinder and prevent as far as possible gasoline engine air filter filter core.

For achieving the above object, the utility model provides following technological scheme: the secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter, comprise air filter body, on described air filter body, there is inlet hole and air outlet hole, it is characterized in that: described air filter body bottom has inlet plate, has a plurality of inlet holes on described inlet plate; Described air outlet hole is located at one end of the length direction of air filter body; Described air filter chamber body is provided with the filter core of filtering gas particle dust, and described filter core is to have the cylindric of hollow cavity and its hollow cavity communicates with air outlet hole.

As optimization, described air outlet hole is shoulder hole, and wherein the little bore portion of this shoulder hole stretches in the hollow cavity of filter core, and the air filter body portion in the macropore of shoulder hole outside circumferentially has screw thread along prolonging.

As optimization, the two ends of described filter core length direction are respectively equipped with filter core tail-hood and filter core protecgulum, and described filter core protecgulum is connected with the air filter body portion in the aperture outside of shoulder hole.

As optimization, the secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter also comprises the air filter lid being installed on air filter body length direction one end relative to air outlet hole.

As optimization, between described air filter lid and filter core tail-hood, be provided with spring, one end of described spring is against on the inner side surface of air filter lid, and the other end is against on the outer side surface of filter core tail-hood.

As optimization, on the outer side surface of the inner side surface of described air filter lid and filter core tail-hood, be provided with accordingly restraining spring and move groove.

As optimization, the middle part of described inlet plate broad ways is the circular arc to air filter body interior depression.

As optimization, described inlet plate is latticed, forms a plurality of inlet holes.

As optimization, the center line of described filter core overlaps with the center line of air filter chamber body, and the circumferential circle of filter core equates with the distance of air filter chamber body wall.

With respect to prior art, the utlity model has following advantage:

1, the secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter that the utility model provides can pass into the gas of filtration in gasoline engine air filter by flexible pipe, make the inlet hole of gasoline engine air filter away from petrol engine, the gas filtering is first more clean; Enter the gas of gasoline engine cylinder through double-filtration, therefore, more clean, make burning more stable.

2, the secondary air filter that the utility model provides, the bottom of air filter body has inlet plate, has a plurality of inlet holes on inlet plate, adopts below air inlet, can avoid water in rainy day farming or cleaning robot to enter intake duct, then corrode other component.

Accompanying drawing explanation

Fig. 1 is the utility model structure embodiment's front view.

Fig. 2 is the sectional view of Figure 1A-A.

Fig. 3 is the sectional view of Figure 1B-B.

In figure, air filter lid 1, spring 2, filter core tail-hood 3, filter core 4, air filter body 5, filter core protecgulum 6, bolt 7, air filter anchor ear 8, inlet plate 9, air outlet hole 10.In figure, arrow represents the direction of gas flow.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

embodiment:referring to Fig. 1 to Fig. 3, to entering the gas of gasoline engine air filter, carry out the secondary air filter of prefiltration, comprise

Air filter body 5, has inlet hole and air outlet hole 10 on described air filter body 5, described air filter body 5 bottoms have inlet plate 9, has a plurality of inlet holes and for the tapped hole of this secondary air filter is installed on described inlet plate 9; During concrete enforcement, inlet plate 9 is latticed, forms a plurality of inlet holes, as shown in Figure 1.Described air outlet hole 10 is located at one end of the length direction of air filter body 5; The other end of air filter body 5 length directions, one end relative with this air outlet hole 10 is provided with air filter lid 1, and while specifically implementing, air filter lid 1 can adopt and be threaded with air filter body 5, reliable in structure, tool using not during dismounting.Described air filter body 5 inner chambers are provided with the filter core 4 of filtering gas particle dust, and this filter core is foam filter elements, and described filter core 4 is for having the cylindric of hollow cavity and its hollow cavity communicates with air outlet hole 10.This makes the gas entering from inlet hole by filter element filtering, enters filter core hollow cavity, then discharges outside air filter body 5 by the air outlet hole communicating with filter core hollow cavity.The center line of cylindric filter core 4 overlaps with the center line of air filter body 5 inner chambers, and the circumferential circle of filter core 4 equates with the distance of air filter body 5 internal chamber walls.During concrete enforcement, air filter body 5 is along its center line symmetrical structure, and the center line of cylindric filter core 4 overlaps with the center line of air filter body 5 inner chambers, easier for installation like this, and filtering effect is also more stable.Air outlet hole 10 is shoulder hole, wherein the aperture of shoulder hole stretches in the hollow cavity of filter core 4 (while specifically implementing, only a part for shoulder hole aperture is stretched in the hollow cavity of filter core), filter core is played to certain supporting effect, connecting hose in air filter body 5 parts outside the macropore of shoulder hole, thereby the other end of flexible pipe connects the inlet hole that the gas of gasoline engine air filter filters through this secondary air filter, make the gas that enters gasoline engine cylinder pass through twice filtration, the gas turbidity test that enter are higher.Air filter body 5 parts outside the macropore of shoulder hole have prevented from leaking gas between flexible pipe and air outlet hole along the spiral shell that prolongs circumferential setting as much as possible.

The two ends of filter core 4 length directions are respectively equipped with filter core tail-hood 3 and filter core protecgulum 6, and described filter core protecgulum 6 is connected with air filter body 5 parts in the aperture outside of shoulder hole.Can support better filter core like this, simultaneously, the air filter body 5 part tightness degree in filter core hollow cavity and shoulder hole aperture outside have also been improved, reduced as much as possible the leakage of gas after filtering, during concrete enforcement, filter core protecgulum 6 can be connected by the mode of welding with air filter body 5 parts in the aperture outside of shoulder hole.

The gas of discharging from air outlet hole has certain pressure, in order to improve the degree of stability of filter core, reduce as much as possible the movement of filter core, between described air filter lid 1 and filter core tail-hood 3, be provided with spring 2, one end of described spring 2 is against on the inner side surface of air filter lid 1, and the other end is against on the outer side surface of filter core tail-hood 3.In order to be that spring is brought into play its effect better, prevent that it from moving, on the outer side surface of the inner side surface of described air filter lid 1 and filter core tail-hood 3, be provided with accordingly restraining spring 2 and move groove.The two ends of spring lay respectively in corresponding groove.

For convenient this secondary air filter of installing, the middle part of inlet plate 9 broad wayss is the circular arc to air filter body 5 inner recess.Referring to Fig. 3, during installation, installation shaft is placed in the circular arc depression of inlet plate 9 along its length, and air filter anchor ear 8 is embraced installation shaft, bolt 7 is screwed into through the hole on air filter anchor ear 8 tapped hole being arranged on inlet plate 9, is about to this secondary air filter installation.

In order to improve gas filtration effect, can also be set up one deck coarse filtration layer between inlet plate 9 and air filter body 5 inner chambers, to filter larger particle.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. the gas that pair enters gasoline engine air filter carries out the secondary air filter of prefiltration, comprise air filter body (5), on described air filter body (5), there is inlet hole and air outlet hole (10), it is characterized in that: described air filter body (5) bottom has inlet plate (9), and described inlet plate has a plurality of inlet holes on (9); Described air outlet hole (10) is located at one end of the length direction of air filter body (5); Described air filter body (5) inner chamber is provided with the filter core (4) of filtering gas particle dust, and described filter core (4) is for having the cylindric of hollow cavity and its hollow cavity communicates with air outlet hole (10).

2. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 1, it is characterized in that: described air outlet hole (10) is shoulder hole, wherein the little bore portion of this shoulder hole stretches in the hollow cavity of filter core (4), and air filter body (5) part in the macropore of shoulder hole outside circumferentially has screw thread along prolonging.

3. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 2, it is characterized in that: the two ends of described filter core (4) length direction are respectively equipped with filter core tail-hood (3) and filter core protecgulum (6), described filter core protecgulum (6) is connected with air filter body (5) part in the aperture outside of shoulder hole.

4. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 3, is characterized in that: also comprise and be installed in air filter body (5) length direction and air filter lid (1) on the relative one end of air outlet hole (10).

5. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 4, it is characterized in that: between described air filter lid (1) and filter core tail-hood (3), be provided with spring (2), one end of described spring (2) is against on the inner side surface of air filter lid (1), and the other end is against on the outer side surface of filter core tail-hood (3).

6. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 4, is characterized in that: on the outer side surface of the inner side surface of described air filter lid (1) and filter core tail-hood (3), be provided with accordingly the mobile groove of restraining spring (2).

7. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 1, is characterized in that: the middle part of described inlet plate (9) broad ways is the circular arc to air filter body (5) inner recess.

8. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 1, is characterized in that: described inlet plate (9), for latticed, forms a plurality of inlet holes.

9. secondary air filter of carrying out prefiltration to entering the gas of gasoline engine air filter as claimed in claim 1, it is characterized in that: the center line of described filter core (4) overlaps with the center line of air filter body (5) inner chamber, the circumferential circle of filter core (4) equates with the distance of air filter body (5) internal chamber wall.