CN219281810U

CN219281810U - Four-stroke petrol engine oil backflow prevention filter

Info

Publication number: CN219281810U
Application number: CN202320533275.6U
Authority: CN
Inventors: 张照仁
Original assignee: Shandong Xiaozhong Outdoor Fine Engineering Technology Co ltd
Current assignee: Shandong Xiaozhong Outdoor Fine Engineering Technology Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-06-30
Anticipated expiration: 2033-03-20

Abstract

The utility model relates to the technical field of oil filters, and discloses an oil backflow prevention filter for a four-stroke gasoline engine, which comprises a shell, wherein a connecting piece is fixedly connected to the inner wall of the top end of the shell, an oil inlet hole and an oil outlet hole are formed in the upper end face of the connecting piece, a filtering mechanism is arranged below the connecting piece, and a sealing device is arranged below the filtering mechanism. According to the four-stroke gasoline engine oil backflow prevention filter, the bottom shell, the connecting annular plate, the first spring, the sliding plate, the sliding rod and the mounting block are arranged, the connecting annular plate is driven to be taken down by rotating the bottom shell, the paper filter element can be replaced easily at the moment, the supporting tube can be taken down in a rotating mode, the check sealing ring is replaced, and the waste of resources is reduced; through setting up first holding ring, clamp plate, gasket, second holding ring, backup pad and second spring, when the paper filter core blocks up, the engine oil pressure forces the second spring to shorten, makes gasket and second holding ring separation, makes engine oil circulate from the holding ring below, prevents that the paper filter core from blockking up, causes the oil circuit to break.

Description

Four-stroke petrol engine oil backflow prevention filter

Technical Field

The utility model relates to the technical field of oil filters, in particular to an oil backflow prevention filter of a four-stroke gasoline engine.

Background

The oil filter is used for filtering media in a lubricating system, and has the effects of filtering mechanical impurities and colloid in the engine oil, keeping the lubricating oil clean and prolonging the service lives of the parts.

The Chinese patent discloses an anti-backflow oil filter, the publication number is CN215979548U, the anti-backflow oil filter comprises a shell and a screw plate component for sealing the shell, a paper filter element is arranged in the shell, a supporting reed is arranged between the paper filter element and the shell, and a check valve plate is arranged between the paper filter element and the screw plate component; the screw sealing plate assembly comprises a sealing plate and a threaded cover plate which are connected in a welding way, an O-shaped sealing ring is arranged between the sealing plate and the threaded cover plate, and an outer sealing ring is arranged on the sealing plate; the utility model discloses an anti-backflow oil filter, which improves the production efficiency, optimizes the production process, reduces the cost and solves the problems of uneven gluing, welding ignition, low strength, high cost and the like.

But still include the following disadvantages: the shell of the device is designed integrally, and when the filter paper is blocked, the filter paper is not convenient to replace, so that the filter is directly thrown away by the whole filter, and resources are wasted. Therefore, we propose an oil backflow prevention filter for a four-stroke gasoline engine to solve the problem.

Disclosure of Invention

The utility model aims to provide an engine oil backflow prevention filter of a four-stroke gasoline engine, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the engine oil backflow prevention filter of the four-stroke gasoline engine comprises a shell, wherein a connecting piece is fixedly connected to the inner wall of the top end of the shell, an oil inlet and an oil outlet are formed in the upper end face of the connecting piece, a filtering mechanism is arranged below the connecting piece, and a sealing device is arranged below the filtering mechanism;

the sealing device comprises a bottom shell, a mounting block, a sliding rod and a connecting ring plate, wherein the bottom shell is sleeved on the outer surface of the bottom end of the shell in a threaded mode, the bottom surface of the mounting block is fixedly connected with the inner wall of the bottom end of the bottom shell, a sliding cavity is formed in the mounting block, the outer surface of the bottom end of the sliding rod penetrates through the upper end surface of the mounting block in a sliding mode and extends into the sliding cavity, and the top surface of the sliding rod is fixedly connected with the bottom surface of the connecting ring plate.

The sliding rod is characterized in that a sliding plate is fixedly connected to the bottom surface of the sliding rod, a first spring is fixedly connected to the bottom surface of the sliding plate, the bottom end of the first spring is fixedly connected with the inner wall of the sliding cavity, and the connecting ring plate can move up and down through the arrangement of the first spring.

The further improvement lies in, filtering mechanism includes fixed pipe, fixed pipe up end and connecting piece bottom surface fixed connection, fixed pipe inner wall and oil outlet inner wall looks adaptation, fixed pipe surface thread bush is equipped with the stay tube, the stay tube bottom extends to fixed pipe below, stay tube surface slip cap is equipped with the paper filter core, through setting up fixed pipe, makes the bracing piece can be dismantled.

The paper filter element is characterized in that the bottom end of the paper filter element extends to the lower part of the supporting tube, the bottom surface of the paper filter element is in extrusion contact with the upper end surface of the connecting ring plate, the supporting plate is fixedly sleeved on the outer surface of the supporting tube, the bottom surface of the supporting plate is in extrusion contact with the upper end surface of the paper filter element, and the paper filter element is conveniently fixed by arranging the supporting plate.

The fixed pipe is characterized in that the fixed pipe is provided with a non-return sealing ring in a sliding sleeve manner, the bottom surface of the non-return sealing ring is in extrusion contact with the upper end surface of the supporting pipe, the outer side surface of the non-return sealing ring extends to the outer side of the oil inlet of the connecting piece, and the non-return sealing ring is arranged to prevent engine oil from flowing backwards.

The further improvement lies in, fixed intraductal fixedly connected with filter plate and third supporting ring, filter plate bottom surface fixedly connected with third spring, third spring bottom surface fixedly connected with ball valve, ball valve surface and third supporting ring inner wall extrusion contact prevents through setting up ball valve and third spring that engine oil from flowing backwards.

The further improvement lies in, stay tube inner wall fixedly connected with first holding ring and second holding ring, a holding ring bottom surface fixedly connected with second spring, second spring bottom surface fixedly connected with clamp plate, clamp plate bottom surface fixedly connected with gasket, gasket bottom surface and second holding ring up end extrusion contact through setting up clamp plate, gasket, backup pad and second spring, when the paper filter core blocks up, the engine oil pressure forces the second spring to shorten, makes gasket and second holding ring separation, makes engine oil circulate from the holding ring below, prevents the paper filter core jam, causes the oil circuit to break.

Compared with the prior art, the utility model has the beneficial effects that: according to the four-stroke gasoline engine oil backflow prevention filter, the bottom shell, the connecting annular plate, the first spring, the sliding plate, the sliding rod and the mounting block are arranged, the connecting annular plate is driven to be taken down by rotating the bottom shell, the paper filter element can be replaced easily at the moment, the supporting tube can be taken down in a rotating mode, the check sealing ring is replaced, and the waste of resources is reduced; through setting up first support ring, clamp plate, gasket, second support ring, backup pad and second spring, when the paper filter core is blockked up, the engine oil pressure forces the second spring to shorten, makes gasket and second support ring separate, makes engine oil circulate from the support ring below, prevents the paper filter core from blockking up, causes the oil circuit to break; through setting up third support ring, ball valve, third spring, filter plate and fixed pipe, through the elasticity of third spring, make engine oil can only follow the stay tube and move downwards, prevent that engine oil from flowing backwards from appearing.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a perspective cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of the structure of FIG. 2 at A;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

fig. 5 is an enlarged view of the structure at C in fig. 2.

In the figure: 1 shell, 2 sealing device, 201 bottom shell, 202 connecting ring plate, 203 first spring, 204 slide plate, 205 slide bar, 206 mounting block, 4 check seal ring, 5 connecting piece, 6 filter mechanism, 601 stay tube, 602 first support ring, 603 clamp plate, 604 gasket, 605 second support ring, 606 third support ring, 607 ball valve, 608 third spring, 609 filter plate, 610 fixed tube, 611 paper filter element, 612 support plate, 613 second spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the engine oil backflow prevention filter for the four-stroke gasoline engine comprises a shell 1, wherein a connecting piece 5 is fixedly connected to the inner wall of the top end of the shell 1, an oil inlet and an oil outlet are formed in the upper end face of the connecting piece 5, a filtering mechanism 6 is arranged below the connecting piece 5, and a sealing device 2 is arranged below the filtering mechanism 6;

the sealing device 2 comprises a bottom shell 201, a mounting block 206, a sliding rod 205 and a connecting ring plate 202, wherein the bottom shell 201 is sleeved on the outer surface of the bottom end of the shell 1 in a threaded manner, the bottom surface of the mounting block 206 is fixedly connected with the inner wall of the bottom end of the bottom shell 201, a sliding cavity is formed in the mounting block 206, the outer surface of the bottom end of the sliding rod 205 penetrates through the upper end surface of the mounting block 206 in a sliding manner and extends into the sliding cavity, the top surface of the sliding rod 205 is fixedly connected with the bottom surface of the connecting ring plate 202, a sliding plate 204 is fixedly connected with a first spring 203 on the bottom surface of the sliding plate 204, the bottom end of the first spring 203 is fixedly connected with the inner wall of the sliding cavity, the connecting ring plate 202 is driven to be taken down by rotating the bottom shell 201, a paper filter element can be replaced easily at the moment, a supporting tube 601 can also be rotated to be taken down, a check sealing ring 4 is replaced, and waste of resources is reduced;

the filtering mechanism 6 comprises a fixed pipe 610, the upper end surface of the fixed pipe 610 is fixedly connected with the bottom surface of the connecting piece 5, the inner wall of the fixed pipe 610 is matched with the inner wall of the oil outlet, a supporting pipe 601 is sleeved on the outer surface of the fixed pipe 610 in a threaded manner, the bottom end of the supporting pipe 601 extends to the lower side of the fixed pipe 610, a paper filter element 611 is sleeved on the outer surface of the supporting pipe 601 in a sliding manner, a check seal ring 4 is sleeved on the outer surface of the fixed pipe 610 in a sliding manner, the bottom surface of the check seal ring 4 is in extrusion contact with the upper end surface of the supporting pipe 601, the outer side surface of the check seal ring 4 extends to the outer side of the oil inlet of the connecting piece 5, a filter plate 609 and a third supporting ring 606 are fixedly connected in the fixed pipe 610, a third spring 608 is fixedly connected to the bottom surface of the filter plate 609, a ball valve 607 is fixedly connected to the bottom surface of the third spring 608, the outer surface of the ball valve 607 is in extrusion contact with the inner wall of the third supporting ring 606, the ball valve 607, the third spring 608, the filter plate 609 and the fixed pipe 610 are arranged, the machine oil can only move downwards along the supporting tube 601 by the elasticity of the third spring 608 to prevent the machine oil from flowing backwards, the bottom end of the paper filter element 611 extends to the lower part of the supporting tube 601, the bottom surface of the paper filter element 611 is in extrusion contact with the upper end surface of the connecting ring plate 202, the supporting plate 612 is fixedly sleeved on the outer surface of the supporting tube 601, the bottom surface of the supporting plate 612 is in extrusion contact with the upper end surface of the paper filter element 611, the inner wall of the supporting tube 601 is fixedly connected with the first supporting ring 602 and the second supporting ring 605, the bottom surface of one supporting ring 602 is fixedly connected with the second spring 613, the bottom surface of the second spring 613 is fixedly connected with the pressing plate 603, the bottom surface of the pressing plate 603 is fixedly connected with the gasket 604, the bottom surface of the gasket 604 is in extrusion contact with the upper end surface of the second supporting ring 605, and the first supporting ring 602, the pressing plate 603, the gasket 604, the second supporting ring 605, the supporting plate 612 and the second spring 613 are arranged, when the paper filter element 611 is blocked, the pressure of the engine oil forces the second spring 613 to be shortened, so that the gasket 604 is separated from the second support ring 605, and the engine oil flows from the lower part of the support ring 601, thereby preventing the paper filter element from being blocked and causing the oil circuit to be broken.

When the device is used, engine oil enters along the oil inlet hole of the connecting piece 5, the check seal ring 4 is pushed away from the connecting piece 5, the engine oil passes through the paper filter element 611 and the support tube 601, the engine oil pressure acts on the bottom surface of the ball valve 607 to enable the third spring 608 to be compressed, the engine oil passes through the fixed tube 610 and the aluminum plate 609 to flow out of the oil outlet hole of the connecting piece 5, after the paper filter element 611 is blocked, the engine oil pressure acts on the gasket 604 to enable the second spring 613 to be shortened, and the engine oil passes through the support tube 601 and the fixed tube 610 to flow out of the device.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a four-stroke petrol engine machine oil prevents flowing backwards filter, includes casing (1), its characterized in that: the oil inlet and the oil outlet are formed in the upper end face of the connecting piece (5), a filtering mechanism (6) is arranged below the connecting piece (5), and a sealing device (2) is arranged below the filtering mechanism (6);

sealing device (2) are including drain pan (201), installation piece (206), slide bar (205) and go-between (202), drain pan (201) thread bush is established in casing (1) bottom surface, installation piece (206) bottom surface and drain pan (201) bottom inner wall fixed connection, the inside slip cavity that has seted up of installation piece (206), slide bar (205) bottom surface slip runs through installation piece (206) up end and extends to inside the slip cavity, slide bar (205) top surface and go-between (202) bottom surface fixed connection.

2. The four-stroke gasoline engine oil backflow prevention filter according to claim 1, wherein: the bottom surface of the sliding rod (205) is fixedly connected with a sliding plate (204), a first spring (203) is fixedly connected to the bottom surface of the sliding plate (204), and the bottom end of the first spring (203) is fixedly connected with the inner wall of the sliding cavity.

3. The four-stroke gasoline engine oil backflow prevention filter according to claim 1, wherein: the filter mechanism (6) comprises a fixed pipe (610), the upper end face of the fixed pipe (610) is fixedly connected with the bottom face of the connecting piece (5), the inner wall of the fixed pipe (610) is matched with the inner wall of the oil outlet, a supporting pipe (601) is sleeved on the outer surface of the fixed pipe (610) through threads, the bottom end of the supporting pipe (601) extends to the lower portion of the fixed pipe (610), and a paper filter element (611) is sleeved on the outer surface of the supporting pipe (601) in a sliding mode.

4. The four-stroke gasoline engine oil backflow prevention filter according to claim 3, wherein: the bottom end of the paper filter element (611) extends to the lower part of the supporting tube (601), the bottom surface of the paper filter element (611) is in extrusion contact with the upper end surface of the connecting annular plate (202), the supporting plate (612) is fixedly sleeved on the outer surface of the supporting tube (601), and the bottom surface of the supporting plate (612) is in extrusion contact with the upper end surface of the paper filter element (611).

5. The four-stroke gasoline engine oil backflow prevention filter according to claim 3, wherein: the fixed pipe (610) surface slip cap is equipped with check sealing washer (4), check sealing washer (4) bottom surface and stay tube (601) up end extrusion contact, check sealing washer (4) lateral surface extends to connecting piece (5) inlet port outside.

6. The four-stroke gasoline engine oil backflow prevention filter according to claim 3, wherein: the inside fixedly connected with filter plate (609) and third support ring (606) of fixed pipe (610), filter plate (609) bottom surface fixedly connected with third spring (608), third spring (608) bottom surface fixedly connected with ball valve (607), ball valve (607) surface and the extrusion contact of third support ring (606) inner wall.

7. The four-stroke gasoline engine oil backflow prevention filter according to claim 3, wherein: the inner wall fixedly connected with first supporting ring (602) and second supporting ring (605) of stay tube (601), a supporting ring (602) bottom surface fixedly connected with second spring (613), second spring (613) bottom surface fixedly connected with clamp plate (603), clamp plate (603) bottom surface fixedly connected with gasket (604), gasket (604) bottom surface and second supporting ring (605) up end extrusion contact.