CN215654508U

CN215654508U - Waste gas check valve with purification performance

Info

Publication number: CN215654508U
Application number: CN202122479128.9U
Authority: CN
Inventors: 陈献华; 温福雄
Original assignee: Meizhoou Xingxiwang Technology Development Co ltd
Current assignee: Meizhoou Xingxiwang Technology Development Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-01-28
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a waste gas one-way valve with a purification function; belonging to the technical field of waste gas one-way valves; the technical key point of the device is that the device comprises a one-way valve assembly, wherein a gas outlet end of the one-way valve assembly is in conduction connection with a filtering assembly, the filtering assembly comprises a cylindrical and hollow shell, a filter element is arranged in the shell and comprises a supporting column and at least two layers of filtering clapboards which are axially distributed at intervals along the supporting column, a plurality of filtering holes are uniformly distributed on each filtering clapboard along the circumferential direction at intervals, and the filtering holes on the two adjacent layers of filtering clapboards are arranged in a staggered manner; the shell is divided into a plurality of independent filtering chambers by each filtering clapboard; a horizontal air injection assembly is arranged in the center of the bottom of the filter element, an air outlet joint is arranged on the shell on the upper side of the filter element, and the air outlet end of the check valve assembly is positioned below the horizontal air injection assembly; the utility model aims to provide the waste gas one-way valve which has compact structure, convenient installation and good effect and has the purification function; the forced ventilation system is used for the automobile crankcase.

Description

Waste gas check valve with purification performance

Technical Field

The present invention relates to an exhaust check valve, and more particularly, to an exhaust check valve having a purification function.

Background

The waste gas one-way valve refers to a PVC valve for automobiles, and is also called a crankcase forced ventilation valve. During operation of the engine, high-pressure combustible mixture and burned gas in the combustion chamber leak into the crankcase through a gap between the piston group and the cylinder to a greater or lesser extent, resulting in blow-by. The blow-by gas is composed of unburned fuel gas, water vapor, exhaust gas and the like, which can dilute the engine oil, reduce the service performance of the engine oil and accelerate the oxidation and deterioration of the engine oil. The water and the air are condensed in the engine oil to form oil sludge and block an oil way; acid gases in the exhaust gas are mixed into the lubrication system, which can cause corrosion and accelerated wear of engine parts; blow-by also causes the crankcase pressure to be too high and the crankcase seal to be broken, allowing oil to leak and run off. Crankcase ventilation must be implemented to prevent excessive crankcase pressure, extend engine oil life, reduce wear and corrosion of parts, and prevent engine oil leakage. Against this background, a positive crankcase ventilation system has been proposed, which leads a branch pipe from an intake manifold of an engine to a crankcase, and which is provided with a positive crankcase ventilation valve at a contact portion between the branch pipe and the crankcase, and re-sucks gas in the crankcase into the intake pipe by negative pressure of the intake manifold.

The existing crankcase forced ventilation valve prepared by the automobile generally has only a one-way conduction function and does not have a filtering function of oil-gas separation, so that the existing single-function crankcase forced ventilation valve is necessary to be improved to improve the function of the crankcase forced ventilation valve and prolong the service life of an automobile engine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an exhaust gas one-way valve which has a compact structure, is convenient to install and has a good purifying function aiming at the defects of the prior art.

The technical scheme of the utility model is realized as follows: a waste gas check valve with a purification function comprises a check valve component, wherein a gas outlet end of the check valve component is in conduction connection with a filtering component, the filtering component comprises a cylindrical and hollow shell, a filter element is arranged in the shell and comprises a support column and at least two layers of filtering clapboards which are distributed at intervals along the axial direction of the support column, a plurality of filtering holes are uniformly distributed on each filtering clapboard along the circumferential direction at intervals, and the filtering holes on the two adjacent layers of filtering clapboards are arranged in a staggered mode; the shell is divided into a plurality of independent filtering chambers by each filtering clapboard.

The filter element is characterized in that a horizontal air injection assembly is arranged in the center of the bottom of the filter element, an air outlet joint is arranged on the shell on the upper side of the filter element, an air outlet end of the check valve assembly is positioned below the horizontal air injection assembly, and air passing through the check valve assembly sequentially passes through the horizontal air injection assembly and filter holes in each layer of filter partition plate and then is output by the air outlet joint.

In the above exhaust gas check valve with a purification function, the horizontal jet assembly is composed of a first cylindrical body which is cylindrical and has a single-side opening, a plurality of jet holes which are arranged on the side wall of the middle part of the first cylindrical body along the radial direction of the first cylindrical body, and at least one oil return hole; the outer bottom of the first cylinder body is tightly attached to the filtering partition plate positioned at the lowermost layer, and the inner bottom of the first cylinder body is gradually enlarged from the bottom surface to the outside.

The included angle formed by the central axes of the two gas injection holes positioned at the outermost ends is 40-180 degrees; the fumarole end of giving vent to anger corresponds an annular seal cavity, and this annular seal cavity up end is for being located the filtration baffle of bottommost, distributes and filters the hole and be located the near end portion near pillar one end on this filtration baffle.

In the above exhaust gas check valve with purification performance, the lower part of the side wall of the shell is provided with a through hole communicated with the air outlet end of the check valve assembly, the air outlet joint is positioned on the upper part of the side wall of the shell, and the filter element is positioned between the through hole and the air outlet joint.

In the above exhaust gas check valve with purification function, the filter element is composed of a pillar, two layers of filtering partition plates distributed at the middle part of the pillar at intervals along the axial direction of the pillar, and a guide partition plate positioned at the upper end of the pillar; an air guide hole is arranged at the near end part of one end of the guide partition plate, which is far away from the support column, and the inner diameter of the air guide hole is larger than that of the filter hole; the horizontal air injection assembly is integrally formed at the lower end of the support column, and a sealing partition plate is arranged at the lower end of the support column.

In the above exhaust gas check valve with purification function, an oil storage cavity is formed at the bottom of the shell at the lower side of the through hole, an inner screw hole for discharging sewage is arranged at the bottom of the shell, and a sealing screw is connected at the inner screw hole in a threaded manner.

In the above exhaust gas check valve with a purification function, the bottom of the housing is obliquely provided with the flow guide inclined plane, and the lower end of the flow guide inclined plane is flush with the lower end of the through hole.

In the above exhaust gas check valve with a purification function, the housing is composed of a second cylinder with a single side open and a sealing cover arranged at an opening part of the second cylinder; the filter element is positioned in the second cylinder, the sealing cover and the one-way valve component are integrally formed, and the air outlet end of the one-way valve component is positioned in the center of the sealing cover; the air inlet end of the horizontal air injection assembly is contacted with the air outlet end of the one-way valve assembly.

In the above exhaust gas check valve with a purification function, the horizontal jet assembly is integrally formed on the sealing cover.

In the above exhaust gas check valve with a purification function, the horizontal jet assembly is integrally formed at the lower end of the strut; the sealing cover and the filtering clapboard at the lowest layer are matched to form an annular sealing chamber.

After the structure is adopted, the unidirectional valve component is combined with the filtering component, the horizontal jet component of the filter element horizontally jets the waste gas sucked out of the crankcase, so that the waste gas impacts the inner wall of the shell to realize the primary sedimentation of fixed particles and liquid substances, and then the waste gas impacts the upper filtering partition plate when passing through the filtering holes arranged in a staggered mode on at least two layers of filtering partition plates, and impacts the inner wall of the shell or the outer wall of the strut again when moving horizontally to perform secondary sedimentation on the waste gas, thereby completing the filtering of the waste gas.

Drawings

The utility model will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the utility model is not restricted.

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of embodiment 2 of the present invention;

FIG. 3 is a schematic structural view of embodiment 3 of the present invention;

FIG. 4 is a schematic structural view of embodiment 4 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 5 of the present invention.

In the figure: 1. a one-way valve assembly; 2. a filter assembly; 3. a housing; 3a, an air outlet joint; 3b, through holes; 3c, a second cylinder; 3d, sealing the cover; 4. a filter element; 5. a pillar; 6. a filtering baffle plate; 6a, filtering holes; 7. a horizontal gas injection assembly; 7a, a first cylinder; 7b, gas injection holes; 7c, an oil return hole; 8. an annular sealed chamber; 9. a guide partition plate; 10. sealing the partition plate; 11. an oil storage chamber; 12. a sealing screw; 13. a diversion inclined plane.

Detailed Description

Example 1

Referring to fig. 1, the waste gas check valve with a purification function of the present invention includes a check valve assembly 1, an air outlet end of the check valve assembly 1 is connected to a filter assembly 2 in a conduction manner, the filter assembly 2 includes a cylindrical and hollow housing 3, and an inner top of the housing is a spherical surface. A filter element 4 is arranged in the shell 3, the filter element 4 comprises a support column 5 and at least two layers of filtering clapboards 6 which are distributed at intervals along the axial direction of the support column 5, a plurality of filtering holes 6a are uniformly distributed on each filtering clapboard 6 at intervals along the circumferential direction, and the filtering holes 6a on the two adjacent layers of filtering clapboards 6 are arranged in a staggered way; the shell 3 is divided into a plurality of independent filtering chambers by each filtering clapboard 6.

The bottom center of the filter element 4 is provided with a horizontal air injection assembly 7, the shell 3 on the upper side of the filter element 4 is provided with an air outlet joint 3a, the air outlet end of the check valve assembly 1 is positioned below the horizontal air injection assembly 7, and air passing through the check valve assembly 1 sequentially passes through the horizontal air injection assembly 7 and the filtering holes 6a on each layer of filtering partition plate 6 and then is output by the air outlet joint 3 a.

Preferably, the horizontal air injection assembly 7 is composed of a first cylinder 7a which is cylindrical and has a single side open, a plurality of air injection holes 7b which are arranged on the side wall of the middle part of the first cylinder 7a along the radial direction of the first cylinder 7a, and at least one oil return hole 7 c; the outer bottom of the first cylinder 7a is closely attached to the filtering partition plate 6 at the lowest layer, and the inner bottom is gradually enlarged from the bottom surface to the outside. The inner bottom surface of the first cylinder is preferably an inner concave arc surface or an isosceles trapezoid-shaped cross section. The location of the oil return holes is to be noted, while the description is easily imaginable to those skilled in the art

The included angle formed by the central axes of the two gas injection holes 7b positioned at the outermost ends is 40-180 degrees, preferably 60-180 degrees, the included angle of the three gas injection holes in the embodiment is 60 degrees, and the included angle of the two gas injection holes positioned at the outermost ends is 60 degrees. The number of the air injection holes can be set according to the specific product size. The air outlet end of the air injection hole 7b corresponds to an annular sealing chamber 8, the upper end face of the annular sealing chamber 8 is a filtering partition plate 6 positioned at the lowest end, and the filtering holes 6a distributed on the filtering partition plate 6 are positioned at the near end part close to one end of the strut 5. The lower end of the oil return hole is level with the inner bottom surface of the annular sealing cavity, so that the filtered engine oil and the like can return to the crankcase again to the maximum extent.

In this embodiment, a through hole 3b communicating with the air outlet end of the check valve assembly 1 is provided at the lower part of the side wall of the housing 3, the air outlet joint 3a is located at the upper part of the side wall of the housing 3, and the filter element 4 is located between the through hole 3b and the air outlet joint 3 a. The structure is suitable for an engine with a waste gas one-way valve arranged on the side, and the side arrangement of the one-way valve can ensure that the filtering component keeps a vertical or basically vertical state, thereby being beneficial to filtering and oil return.

Preferably, in this embodiment, the filter element 4 is composed of a pillar 5, two layers of filtering partition plates 6 axially distributed at intervals along the pillar 5 in the middle of the pillar 5, and a guiding partition plate 9 positioned at the upper end of the pillar 5; an air guide hole 9a is arranged at the near end part of one end of the guide partition plate 9 far away from the support column 5, and the inner diameter of the air guide hole 9a is larger than that of the filter hole 6 a; the horizontal air injection assembly 7 is integrally formed at the lower end of the strut 5, and a sealing partition plate 10 is arranged at the lower end of the strut 5.

Further preferably, an oil storage chamber 11 is formed at the bottom of the housing 3 below the through hole 3b, an internal screw hole for discharging sewage is provided at the bottom of the housing 3, and a sealing screw 12 is threadedly connected to the internal screw hole. By adopting the structure, the engine oil which is filtered by the filtering component and contains a small amount of impurities such as carbon deposit, water and the like is stored in the oil storage cavity and is periodically discharged and cleaned. The engine oil filter device can absorb and treat the waste gas in the crankcase, can filter and store solid impurities, water vapor and the like in the waste gas, furthest avoids shortening the service life of the engine oil in the crankcase due to backflow, and can also avoid the increase of carbon deposition caused by the fact that the engine oil mixed with carbon deposition and water vapor enters a combustion chamber to be combusted.

The exhaust check valve of the present embodiment is suitable for side mounting. This maintains the filter assembly in a vertical position. Of course, for the vehicle type in which the waste gas check valve is in threaded connection with the crankcase, in order to realize the verticality of the filtering assembly, the movable and sealed connection can be adopted between the check valve assembly and the filtering assembly, namely when the filtering assembly is installed, the filtering assembly is kept vertically still, and only the check valve assembly is rotated to be connected with the connecting hole in the crankcase. The connecting member is a prior art, which is not a technical point to be protected by the present application, and is not described herein again.

Example 2

Referring to fig. 2, the exhaust check valve with a purifying function according to the present invention has substantially the same structure as that of embodiment 1, except that it does not have an oil storage chamber and a sealing screw. A flow guide inclined plane 13 is obliquely arranged at the bottom of the shell 3, and the lower end of the flow guide inclined plane 13 is level with the lower end of the through hole 3 b. The structure directly discharges the filtered engine oil back to the crankcase, and can cause certain influence on the engine oil in the crankcase, so that the structure is suitable for users who are not commonly used by automobiles or vehicles with better driving road conditions. The engine protection effect of the filtration is the same as that of example 1.

Example 3

Referring to fig. 3, the waste gas check valve with a purification function of the present invention includes a check valve assembly 1, an air outlet end of the check valve assembly 1 is connected to a filter assembly 2 in a conduction manner, the filter assembly 2 includes a cylindrical and hollow housing 3, a filter element 4 is disposed in the housing 3, the filter element 4 includes a pillar 5 and at least two layers of filter partitions 6 axially spaced along the pillar 5, a plurality of filter holes 6a are uniformly distributed on each filter partition 6 along a circumferential direction at intervals, and the filter holes 6a on two adjacent layers of filter partitions 6 are arranged in a staggered manner; the shell 3 is divided into a plurality of independent filtering chambers by each filtering clapboard 6.

In the present embodiment, the housing 3 is composed of a second cylinder 3c with one side open and a sealing cover 3d disposed at the opening of the second cylinder 3 c; the filter element 4 is positioned in the second cylinder 3c, the sealing cover and the one-way valve component 1 are integrally formed, and the air outlet end of the one-way valve component 1 is positioned in the center of the sealing cover 3d, namely the one-way valve component is positioned at the bottom of the filter component. And the air inlet end of the horizontal air injection assembly 7 is contacted with the air outlet end of the one-way valve assembly 1. The assembly mode of the shell is convenient for the assembly of the filter assembly.

Meanwhile, in the embodiment, the filter element 4 is composed of a support pillar 5, two layers of filtering partition plates 6 which are distributed at intervals in the middle of the support pillar 5 along the axial direction of the support pillar 5, and a guide partition plate 9 which is positioned at the upper end of the support pillar 5; an air guide hole 9a is arranged at the end part of the guide partition plate 9 far away from the pillar 5, and the inner diameter of the air guide hole 9a is larger than that of the filter hole 6 a. The horizontal air injection assembly 7 is integrally formed at the lower end of the strut 5; the sealing cover 3d and the lowest filtering partition 6 cooperate to form an annular sealing chamber 8. In order to ensure the filtering effect, a corresponding sinking groove is arranged on the end face, opposite to the support column, of the sealing cover, and after the assembly is completed, the lower end of the support column is located in the sinking groove. Meanwhile, chamfers are formed at the opening part of the sinking groove and the lower end of the strut, and the assembly is convenient. The exhaust check valve of the present embodiment is suitable for top loading.

Example 4

Referring to fig. 4, the exhaust check valve with a purifying function according to the present invention has a structure substantially the same as that of embodiment 3, except that the horizontal jet unit 7 is integrally formed on the sealing cover 3 d. Similarly, in order to ensure the filtering effect, the gas forms a circular flow in the annular sealed chamber, the bottom of the filtering baffle plate at the lower end is provided with a positioning connecting ring which is adaptive to the outer diameter of the first cylinder, and the adaptive chamfering is also needed to be carried out at the inner hole end of the opening part of the positioning connecting ring and the upper end of the first cylinder so as to facilitate the assembly. This is prior art and will not be described further herein. The exhaust check valve of the present embodiment is also applicable to top loading.

Example 5

Referring to fig. 5, the exhaust check valve with purification function according to the present invention has a structure substantially the same as that of embodiment 3, except that there are only two layers of filtering partition plates in the filter element, and there is no guiding partition plate, and accordingly, the outlet connector 3a is disposed at the center of the top of the housing, and is coaxial with the check valve assembly. The exhaust check valve of the present embodiment is also applicable to top loading.

The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The waste gas check valve with the purification function comprises a check valve assembly (1) and is characterized in that the air outlet end of the check valve assembly (1) is in conduction connection with a filter assembly (2), the filter assembly (2) comprises a cylindrical hollow shell (3), a filter element (4) is arranged in the shell (3), the filter element (4) comprises a support column (5) and at least two layers of filter partition plates (6) which are axially distributed at intervals along the support column (5), a plurality of filter holes (6a) are uniformly distributed on each filter partition plate (6) at intervals along the circumferential direction, and the filter holes (6a) on the adjacent two layers of filter partition plates (6) are arranged in a staggered mode; the shell (3) is divided into a plurality of independent filtering chambers by each filtering clapboard (6);

the filter element is characterized in that a horizontal air injection assembly (7) is arranged in the center of the bottom of the filter element (4), an air outlet joint (3a) is arranged on the shell (3) on the upper side of the filter element (4), the air outlet end of the check valve assembly (1) is positioned below the horizontal air injection assembly (7), and air passing through the check valve assembly (1) is output by the air outlet joint (3a) after sequentially passing through the horizontal air injection assembly (7) and filter holes (6a) in each layer of filter partition board (6).

2. The exhaust gas check valve with purification function according to claim 1, wherein the horizontal jet assembly (7) is composed of a first cylinder (7a) which is cylindrical and has a single side opening, a plurality of jet holes (7b) and at least one oil return hole (7c) which are arranged on the side wall of the middle part of the first cylinder (7a) along the radial direction of the first cylinder (7 a); the outer bottom of the first cylinder (7a) is tightly attached to the filtering partition plate (6) at the lowest layer, and the inner bottom of the first cylinder is gradually enlarged from the bottom surface to the outside;

the included angle formed by the central axes of the two gas injection holes (7b) positioned at the outermost ends is 40-180 degrees; the end of giving vent to anger of fumarole (7b) corresponds an annular seal chamber (8), and this annular seal chamber (8) up end is for being located the filtration baffle (6) of bottommost, distributes and filters hole (6a) on this filtration baffle (6) and be located the proximal end portion that is close to pillar (5) one end.

3. An exhaust gas check valve with a purifying function according to claim 1 or 2, wherein a through hole (3b) communicating with the outlet end of the check valve assembly (1) is formed in the lower portion of the side wall of the housing (3), the outlet joint (3a) is located in the upper portion of the side wall of the housing (3), and the filter element (4) is located between the through hole (3b) and the outlet joint (3 a).

4. An exhaust gas check valve with purification function according to claim 3, wherein the filter element (4) is composed of a pillar (5), two layers of filtering partition plates (6) which are distributed at intervals along the axial direction of the pillar (5) at the middle part of the pillar (5), and a guide partition plate (9) which is positioned at the upper end of the pillar (5); an air guide hole (9a) is formed in the near end part of one end, far away from the support column (5), of the guide partition plate (9), and the inner diameter of the air guide hole (9a) is larger than that of the filtering hole (6 a); the horizontal air injection assembly (7) is integrally formed at the lower end of the strut (5), and a sealing partition plate (10) is arranged at the lower end of the strut (5).

5. An exhaust gas check valve with a purifying function according to claim 3, wherein an oil storage chamber (11) is formed at the bottom of the housing (3) at the lower side of the through hole (3b), an inner screw hole for discharging sewage is provided at the bottom of the housing (3), and a sealing screw (12) is threadedly connected to the inner screw hole.

6. An exhaust check valve with purifying function according to claim 3, characterized in that the bottom of the housing (3) is provided with a guide slope (13) at an incline, and the lower end of the guide slope (13) is flush with the lower end of the through hole (3 b).

7. An exhaust check valve with a purifying function according to claim 2, wherein the housing (3) is composed of a second cylinder (3c) with one side open and a sealing cover (3d) provided at an opening portion of the second cylinder (3 c); the filter element (4) is positioned in the second cylinder (3c), the sealing cover () and the one-way valve component (1) are integrally formed, and the air outlet end of the one-way valve component (1) is positioned in the center of the sealing cover (3 d); and the air inlet end of the horizontal air injection assembly (7) is contacted with the air outlet end of the one-way valve assembly (1).

8. An exhaust gas check valve with a purifying function as claimed in claim 7, wherein the horizontal jet unit (7) is integrally formed on the sealing cover (3 d).

9. The exhaust gas check valve with purification function according to claim 7, wherein the horizontal jet assembly (7) is integrally formed at the lower end of the strut (5); the sealing cover (3d) is matched with the filtering partition plate (6) at the lowest layer to form an annular sealing chamber (8).