CN220185249U

CN220185249U - Combined air filter

Info

Publication number: CN220185249U
Application number: CN202321690744.1U
Authority: CN
Inventors: 钱燕; 周洁; 郑和瑞; 张益�
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-12-15
Anticipated expiration: 2033-06-29

Abstract

The utility model provides a compound air filter, comprising: the upper cover, the upper casing, lower casing, first filter core and second filter core, the upper cover is fixed in the top of upper casing, form the air inlet between the bottom of upper cover and the upper casing, be equipped with the oil bath portion that is used for holding machine oil in the upper casing, the lower casing is fixed in the below of upper casing, and first filter core is located in the upper casing and is located the top of oil bath portion, and the second filter core is located in the lower casing, and oil bath portion is located between first filter core and the second filter core. External air enters from the air inlet, passes through the oil bath part, upwards passes through the first filter element, then downwards circulates, passes through the second filter element, and finally is discharged from the air outlet. The utility model ensures high efficiency of filtration and low flow resistance of air through a dry-wet combined multiple filtering structure, thereby ensuring that the filter has larger air inflow; can be continuously used for a long time without maintenance even in severe environments with much dust and dirt, and has low maintenance cost.

Description

Combined air filter

Technical Field

The utility model relates to the technical field of air filters, in particular to a composite air filter.

Background

In the prior art, when an engine runs, a large amount of air is required to be inhaled, the air contains dust, particles and other impurities, the traditional air filter is divided into oil bath type air filtration and dry type paper air filtration, and the air filter is single-stage or double-stage filtration, can filter the impurities such as large dust, particles and the like in the air, but has lower filtration efficiency. The engine sucks in dust-carrying air, which will cause the strong abrasion of the parts of the cylinder sleeve, the piston ring and the valve, thereby damaging the normal operation of the engine and shortening the service life of the engine. The oil bath type air filter mainly adsorbs dust and particles by oil mist, and loses the filtering effect after the adsorption reaches saturation, so that the oil bath type air filter needs to be cleaned, maintained and replaced with new engine oil frequently; the paper dry air filter is easy to block filter paper filtering holes under the condition of large dust, prevents air from entering, and is high in maintenance cost because the filter element is required to be replaced frequently.

Accordingly, there is a need to provide a composite air cleaner that overcomes the above-described drawbacks.

Disclosure of Invention

The utility model aims to provide a composite air filter.

According to one aspect of the present utility model, there is provided a composite air cleaner comprising:

an upper cover;

the upper cover is fixed above the upper shell, an air inlet is formed between the bottom of the upper cover and the upper shell, and an oil bath part for containing engine oil is arranged in the upper shell;

the lower shell is fixed below the upper shell;

the first filter element is arranged in the upper shell and is positioned above the oil bath part;

the second filter element is arranged in the lower shell, and the oil bath part is positioned between the first filter element and the second filter element;

external air enters from the air inlet, passes through the oil bath part, upwards passes through the first filter element, then downwards circulates, passes through the second filter element, and finally is discharged from the air outlet.

Preferably, the upper shell comprises an inner cylinder body, an outer cylinder body positioned outside the inner cylinder body and a bottom wall positioned at the bottom end of the inner cylinder body and connected with the inner cylinder body and the outer cylinder body, the inner cylinder body, the outer cylinder body and the bottom wall jointly enclose an annular containing cavity, and the bottom of the containing cavity is the oil bath part.

Preferably, an air inlet is formed between the bottom of the upper cover and the outer cylinder, the inner cylinder and the outer cylinder are coaxially arranged, and the first filter element is sleeved on the inner cylinder and is arranged at intervals between the first filter element and the outer cylinder.

Preferably, the upper shell comprises an air outlet arranged on the outer cylinder, and the air outlet is positioned below the bottom wall.

Preferably, the second filter element is coaxially arranged with the inner cylinder, the inner diameter of the second filter element is larger than or equal to the inner diameter of the inner cylinder, the top end of the second filter element is in sealing contact with the bottom wall, the bottom end of the second filter element is in sealing contact with the bottom surface of the lower shell, and the cavity formed by the lower shell and the upper shell together is divided into an air inlet chamber directly communicated with the inner cylinder and an air outlet chamber directly communicated with the air outlet by the second filter element.

Preferably, a windage tray is arranged between the first filter element and the bottom wall, and the windage tray is sleeved on the inner cylinder.

Preferably, blades which are obliquely arranged in the North drying way are arranged between the upper cover and the outer cylinder body, and the blades are uniformly arranged along the periphery of the outer cylinder body and are fixed with the outer cylinder body.

Preferably, the upper end of the inner cylinder is fixedly provided with a mounting frame, the upper end of the mounting frame is vertically and upwards provided with a bolt, and the upper cover is connected with the upper end of the upper shell through the bolt and is locked and fixed through a butterfly nut.

Preferably, the upper shell and the lower shell are connected and fixed through a fastening device, the fastening device is circumferentially and uniformly distributed on the side wall of the lower shell, and the fastening device comprises a fixing seat fixed with the lower shell, an upper fastening buckle rotationally connected with the fixing seat and a lower fastening buckle rotationally connected with the upper fastening buckle.

Preferably, the outer edge of the upper end of the first filter element is in sealing contact with the upper cover through a sealing gasket.

Compared with the prior art, the composite air filter provided by the utility model has the following beneficial effects:

due to the adoption of the technical scheme, the utility model has the advantages of simple structure, ingenious design and low cost; the dry-wet combined multiple filtering structure is adopted, so that the high efficiency of filtering is ensured, and the low flow resistance of air is ensured, thereby ensuring that the filter has larger air inflow; meanwhile, an up-down structure is adopted, the air inlet with the blades and the oil bath part are arranged above, the second filter element is arranged below, and the middle of the second filter element is connected by using a buckle, so that the maintenance is convenient; can be continuously used for a long time without maintenance even in severe environments with much dust and dust, and has low maintenance cost and long maintenance period.

Drawings

The utility model is described in further detail below with reference to the attached drawings and detailed description:

FIG. 1 is a perspective view of a composite air cleaner of the present utility model;

FIG. 2 is a front view of the composite air cleaner of the present utility model;

FIG. 3 is a cross-sectional view taken along the A-A plane of FIG. 2;

FIG. 4 is an enlarged view at B of FIG. 3;

FIG. 5 is an enlarged view of another embodiment at B of FIG. 3;

FIG. 6 is a partial perspective view of a composite air cleaner of the present utility model;

fig. 7 is a perspective view of a first cartridge of the present utility model.

The novel filter comprises a top cover, a dust discharging port, a flange, a top shell, a bottom shell, a 21 inner shell, a 22 outer shell, 221 blades, a 222 air outlet, a 23 bottom wall, a 24 containing cavity, a 25 oil bath part, a 26 mounting rack, a 27 bolt, a 28 butterfly nut, a 3 lower shell, a 31 air inlet chamber, a 32 air outlet chamber, a 4 first filter element, a 41 inner sleeve, a 42 outer sleeve, a 421 groove, a 43 filter element body, a 5 second filter element, a 6 oil baffle disc, a 7 air inlet, a 8 buckle device, a 81 fixing seat, a 82 upper buckle, a 83 lower buckle, a 91 sealing gasket and a 92 retainer ring.

Detailed Description

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

For the sake of simplicity of the drawing, the parts relevant to the present utility model are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, in the description of the present utility model, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

Referring to fig. 1, 2 and 3, the present embodiment discloses a composite air cleaner including an upper cover 1, an upper case 2, a lower case 3, a first filter element 4 and a second filter element 5. The upper cover 1 is fixed above the upper case 2, and the upper case 2 is fixed above the lower case 3. An air inlet 7 is formed between the bottom of the upper cover 1 and the upper housing 2, and an oil bath portion 25 for containing engine oil is provided in the upper housing 2. The first filter element 4 is disposed in the upper case 2 above the oil bath portion 25, and the second filter element 5 is disposed in the lower case 3.

The upper housing 2 includes an inner cylinder 21, an outer cylinder 22 located at the periphery of the inner cylinder 21, and a bottom wall 23 located at the bottom end of the inner cylinder 21 and connecting the inner cylinder 21 and the outer cylinder 22. An air inlet 7 is formed between the bottom of the upper cover 1 and the outer cylinder 22, and the inner cylinder 21 and the outer cylinder 22 are coaxially arranged. The upper part circumference of upper cover 1 evenly is provided with dust discharge mouth 11, and here can filter dust, impurity more than 70% in the air inlet, just so alleviateed later filterable burden, it is better to make whole filter effect, also makes air cleaner maintenance live time longer, and air cleaner is more reliable in use.

The inner cylinder 21, the outer cylinder 22 and the bottom wall 23 jointly enclose an annular accommodating cavity 24, and the bottom of the accommodating cavity 24 is an oil bath part 25. The upper end of the inner cylinder 21 is fixed with a mounting frame 26, the upper end of the mounting frame 26 is vertically upwards fixed with a bolt 27, and the upper cover 1 is connected with the upper end of the upper shell 2 through the bolt 27 and is locked and fixed through a butterfly nut 28, so that the disassembly is convenient.

The inner cylinder 21 is sleeved with the oil baffle disc 6, the oil baffle disc 6 is provided with a through hole, and the oil baffle disc 6 has the effect of preventing engine oil from flowing upwards. A first filter element 4 is arranged above the windage tray 6. The first filter element 4 is sleeved on the inner cylinder 21 and is arranged at intervals with the outer cylinder 22.

Referring to fig. 3 and 6, a vane 221 is provided between the upper cover 1 and the outer cylinder 22, i.e. a vane 221 is provided in the air inlet 7. The blades 221 are uniformly arranged along the outer circumference of the outer cylinder 22. One end of the vane 221 is fixed to the outer cylinder 22, and the other end of the vane 221 is in contact with the inner surface of the upper cover 1. When air enters the upper cover 1 from the air inlet 7, a rotating air flow is formed under the guidance of the blades 221, and large dust particles in the air are discharged through the dust discharge port 11 under the action of centrifugal force, so that the entering air can be subjected to preliminary rough filtration.

The outer cylinder 22 extends below the bottom wall 23, and the upper housing 2 includes an air outlet 222 provided in the outer cylinder 22, and the air outlet 222 is located below the bottom wall 23. The second filter element 5 is coaxially arranged with the inner cylinder 21, and the inner diameter of the second filter element 5 is larger than or equal to the inner diameter of the inner cylinder 21. The top end of the second filter element 5 is in sealing contact with the bottom wall 23, the bottom end of the second filter element 5 is in sealing contact with the bottom surface of the lower shell 3, and the second filter element 5 divides a cavity formed by the lower shell 3 and the upper shell 2 into an air inlet chamber 31 directly communicated with the inner cylinder 21 and an air outlet chamber 32 directly communicated with the air outlet 222.

The upper shell 2 and the lower shell 3 are fixedly connected through the buckling device 8, the buckling device 8 is circumferentially and uniformly distributed on the side wall of the lower shell 3, and the buckling device 8 comprises a fixed seat 81 fixed with the lower shell 3, an upper buckling 82 rotationally connected with the fixed seat 81 and a lower buckling 83 rotationally connected with the upper buckling 82. When the catch means 8 is in the locked state, the upper catch 82 is caught at the bottom edge of the upper housing 2.

Referring to fig. 4, 5 and 7, the upper outer edge of the first filter element 4 is in sealing contact with the upper cover 1 by a gasket 91. The first filter cartridge 4 comprises an outer sleeve 42, an inner sleeve 41 and a cartridge body 43 located between the outer sleeve 42 and the inner sleeve 41. The top end of the outer sleeve 42 is sleeved with a sealing gasket 91, the inner wall of the upper cover 1 is provided with a downward-protruding annular flange 12, and the sealing is performed by pressing the flange 12 and the sealing gasket 91. The top of first filter core 4 is equipped with retaining ring 92, and the upper end of retaining ring 92 contacts with sealed 91, and the lower extreme contacts with first filter core 4. In other embodiments, instead of the above, an annular groove 421 may be provided on the top of the outer sleeve 42, and the flange 12 may be directly embedded in the groove 421 to achieve support and sealing.

Outside air enters from the air inlet 7, enters the upper cover 1 through the blades 221, enters the oil bath part 25 through a gap between the first filter element 4 and the outer cylinder 22, is filtered for the first time, passes through the oil bath part 25, then upwards passes through the first filter element 4, is filtered, then downwards flows to the air inlet chamber 31 through the inner cylinder 21, is filtered through the second filter element 5, enters the air outlet chamber 32, and finally is discharged from the air outlet 222 after multiple times of filtering. The air cleaner of this embodiment is provided with multi-stage filtration by a combination of vane-type rough filtration, oil bath filtration, and double filter element filtration, and thus has a good filtration effect.

The compound air filter combines oil filtration and dry filter paper air filtration to realize multistage filtration, air is subjected to multistage filtration, the maintenance cost is low, the filtering efficiency is high, the filtering effect is good, the air cleanliness of the compound air filter is greatly improved, the air inlet of an engine is ensured to be clean, the abrasion of parts is reduced, the reliability of the engine is improved, and the service life of a machine is prolonged; meanwhile, harmful particles are filtered, so that the harmful particles are prevented from being burnt, and the pollution to the environment is reduced; the multiple filtration of the compound air filter can also lengthen the maintenance period of the filter element, and the combustion of air with high cleanliness can also reduce the air intake noise.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present utility model without departing from the spirit and scope of the utility model. Therefore, it is intended that the present utility model cover the modifications and variations of this utility model provided they come within the scope of the appended claims and their equivalents.

Claims

1. A composite air cleaner, comprising:

an upper cover;

the lower shell is fixed below the upper shell;

2. The composite air cleaner of claim 1, wherein the upper housing includes an inner barrel, an outer barrel positioned outside the inner barrel, and a bottom wall positioned at a bottom end of the inner barrel and connecting the inner barrel and the outer barrel, the inner barrel, the outer barrel, and the bottom wall collectively define an annular receiving cavity, and the bottom of the receiving cavity is the oil bath portion.

3. The composite air cleaner of claim 2, wherein an air inlet is formed between the bottom of the upper cover and the outer cylinder, the inner cylinder and the outer cylinder are coaxially disposed, and the first filter element is sleeved on the inner cylinder and is spaced from the outer cylinder.

4. A composite air cleaner according to claim 3 wherein the upper housing includes an air outlet provided in the outer barrel, the air outlet being located below the bottom wall.

5. The composite air cleaner of claim 4, wherein the second filter element is coaxially disposed with the inner cylinder, and the second filter element has an inner diameter greater than or equal to the inner diameter of the inner cylinder, the top end of the second filter element is in sealing contact with the bottom wall, the bottom end of the second filter element is in sealing contact with the bottom surface of the lower housing, and the second filter element divides the chamber formed by the lower housing and the upper housing into an air inlet chamber directly communicated with the inner cylinder and an air outlet chamber directly communicated with the air outlet.

6. The composite air cleaner of claim 5, wherein a windage tray is disposed between the first filter element and the bottom wall, and wherein the windage tray is sleeved on the inner barrel.

7. The composite air cleaner of claim 6, wherein the air inlet is provided with blades disposed diagonally in the nori direction, and the blades are uniformly disposed along the outer circumference of the outer cylinder and fixed with the outer cylinder.

8. The composite air cleaner of claim 7, wherein the upper end of the inner cylinder is fixed with a mounting bracket, the upper end of the mounting bracket is vertically and upwardly fixed with a bolt, and the upper cover is connected with the upper end of the upper housing by the bolt and is locked and fixed by a wing nut.

9. The composite air cleaner of claim 8, wherein the upper and lower housings are fixedly coupled by snap means circumferentially uniformly distributed on a sidewall of the lower housing, the snap means including a fixed seat fixedly coupled to the lower housing, an upper snap rotatably coupled to the fixed seat, and a lower snap rotatably coupled to the upper snap.

10. The composite air cleaner of claim 9, wherein the upper outer edge of the first filter element is in sealing contact with the upper cover via a gasket.