CN219101438U

CN219101438U - Backflow-preventing filter

Info

Publication number: CN219101438U
Application number: CN202320019849.8U
Authority: CN
Inventors: 叶雨妍; 叶刚; 李莉红
Original assignee: Kashi Aodu Sugar Industry Co ltd
Current assignee: Kashi Aodu Sugar Industry Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-05-30
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses a backflow-preventing filter which comprises a filter shell and a central tube, wherein a plurality of through holes are formed in the surface of the central tube, filter paper is sleeved on the surface of the central tube, and a plurality of mounting plates are mounted in the inner cavity of the filter shell. The top and the bottom that a plurality of mounting plates enclose into the inner chamber are all fixedly connected with collar, the bottom block of filter paper is connected with the lower extreme cap, the top block of filter paper is connected with the upper end cap, the top block of filter shell inner chamber is connected with the chassis, a plurality of logical grooves have been seted up to the top annular on chassis, the top fixedly connected with fixed cover of upper end cap. According to the utility model, through the arrangement of the filter paper, engine oil is filtered, the unfiltered engine oil is prevented from entering the inner cavity of the central tube through the cooperation of the fixed sleeve and the cylinder, and the engine oil is prevented from flowing backwards through the arrangement of the backflow prevention sealing element, so that the purpose of effectively preventing the gasoline in the filter from flowing backwards can be achieved.

Description

Backflow-preventing filter

Technical Field

The utility model belongs to the technical field of filters, and particularly relates to a backflow-preventing filter.

Background

The engine oil filter is positioned in an engine lubricating system, the upstream part of the engine oil filter is an engine oil pump, and the downstream part of the engine oil filter is parts which need to be lubricated, and the engine oil filter has the function of filtering harmful impurities in engine oil from an oil pan, so that clean engine oil is supplied to kinematic pairs such as a crankshaft, a connecting rod, a camshaft, a supercharger, a piston ring and the like to perform the functions of lubrication, cooling and cleaning, thereby prolonging the service life of the parts.

If the engine oil in the filter flows backwards, the engine oil can not be filtered, and the phenomenon of insufficient oil supply can be caused when the motor vehicle accelerates, the service life of the motor vehicle engine can be shortened for a long time, so that the backflow prevention filter needs to be designed, and unfiltered engine oil is effectively prevented from flowing backwards.

Disclosure of Invention

The utility model aims to provide a backflow-preventing filter, which can be clamped into an inner cavity of a fixed sleeve through a cylinder to prevent engine oil from directly entering the inner cavity of a central pipe without being filtered, and can be matched with an annular clamping piece through the shape arrangement of a backflow-preventing sealing piece to avoid engine oil from flowing backwards so as to solve the problems proposed by the background art.

The technical scheme for solving the technical problems is as follows: the utility model provides a prevent backflow filter, its includes filter shell and center tube, a plurality of through-holes have been seted up on the surface of center tube, the surface cover of center tube is equipped with filter paper, a plurality of mounting panels are installed to the inner chamber of filter shell. The top and the equal fixedly connected with collar of bottom of inner chamber are enclosed to a plurality of mounting plates, the bottom block of filter paper is connected with the lower extreme cap, the top block of filter paper is connected with the upper end cap, the top block of filter housing inner chamber is connected with the chassis, a plurality of logical grooves have been seted up to the top annular on chassis, the fixed cover of top fixedly connected with of upper end cap, the bottom fixedly connected with and the drum of fixed cover looks block on chassis, the bottom fixedly connected with annular fastener on chassis, the top fixedly connected with block of upper end cap is in the annular fastener inner chamber prevent the sealing member that flows backwards, prevent that the sealing member shape is the ascending loudspeaker of heavy-calibre.

Preferably, the folded paper of the filter paper is uniform in height and uniform in distance distribution.

Preferably, a bypass valve is installed at the top of the lower end cover, and a spring is arranged in an inner cavity of the bypass valve.

Preferably, the top of the central tube is tightly attached to the bottom of the upper end cover, and the bottom of the central tube is tightly attached to the lower end cover.

Preferably, the surface of the lower end cover and the surface of the upper end cover are respectively clamped in the inner cavities of the two mounting rings.

Preferably, the top of the inner cavity of the filter shell is fixedly connected with a sealing ring, and the top of the chassis is provided with a clamping groove matched with the sealing ring.

1. The beneficial effects of the utility model are as follows: according to the utility model, through the arrangement of the filter paper, engine oil is filtered, the unfiltered engine oil is prevented from entering the inner cavity of the central tube through the cooperation of the fixed sleeve and the cylinder, and the engine oil is prevented from flowing backwards through the arrangement of the backflow prevention sealing element, so that the purpose of effectively preventing the gasoline in the filter from flowing backwards can be achieved.

2. According to the utility model, through the cooperation of the bypass valve and the spring, when the engine oil filter element is not replaced or blocked for a long time, the pressure can push the bypass valve to enable unfiltered engine oil to enter the engine, so that the engine oil shortage is prevented.

Drawings

Wherein:

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

FIG. 2 is a schematic perspective view of a front explosion of an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of the connection of the upper end cap and the chassis in accordance with one embodiment of the present utility model;

FIG. 4 is an enlarged schematic view of FIG. 1A according to an embodiment of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. the filter comprises a filter shell, 2, a central tube, 3, filter paper, 4, a mounting plate, 5, a mounting ring, 6, a lower end cover, 7, a bypass valve, 8, a spring, 9, an upper end cover, 10, a chassis, 11, a fixed sleeve, 12, a cylinder, 13, an annular clamping piece, 14, a backflow prevention sealing piece, 15, a sealing ring, 16 and a clamping groove.

Detailed Description

Hereinafter, an embodiment of the reverse flow preventing filter of the present utility model will be described with reference to the accompanying drawings.

Embodiment one:

fig. 1 to 4 show a reverse flow preventing filter according to an embodiment of the present utility model, which includes a filter housing 1 and a center tube 2: the surface of the central tube 2 is provided with a plurality of through holes, the surface of the central tube 2 is sleeved with filter paper 3, and the inner cavity of the filter shell 1 is provided with a plurality of mounting plates 4. The top and the equal fixedly connected with collar 5 in bottom of inner chamber are enclosed to a plurality of mounting panels 4, filter paper 3's bottom block is connected with bottom end cover 6, bypass valve 7 is installed at bottom end cover 6's top, bypass valve 7's inner chamber is provided with spring 8, through bypass valve 7 and spring 8's cooperation use, make when the oil filter core does not change for a long time and stop up, the pressure will push up bypass valve and let unfiltered engine oil get into the engine, prevent the engine lack of oil, filter paper 3's top block is connected with upper end cover 9, filter housing 1's inner chamber's top block is connected with chassis 10, a plurality of logical grooves have been seted up to chassis 10's top ring form, upper end cover 9's top fixedly connected with fixed cover 11, chassis 10's bottom fixedly connected with and fixed cover 11 looks block's drum 12, chassis 10's bottom fixedly connected with annular clamping 13, upper end cover 9's top fixedly connected with block is in annular clamping 13's inner chamber's anti-backflow sealing piece 14, anti-sealing piece 14 shape is big-up loudspeaker form, filter housing 1's inner chamber's top fixedly connected with sealing washer 15, sealing washer 15 is opened at the top of chassis 10 looks adaptation groove 16.

Embodiment two:

fig. 1 to 4 show a reverse flow preventing filter according to an embodiment of the present utility model, which includes a filter housing 1 and a center tube 2: the surface of the central tube 2 is provided with a plurality of through holes, the surface of the central tube 2 is sleeved with filter papers 3, the folded paper heights of the filter papers 3 are consistent and the distances are uniformly distributed, and the inner cavity of the filter shell 1 is provided with a plurality of mounting plates 4. The top and the equal fixedly connected with collar 5 in bottom of inner chamber are enclosed to a plurality of mounting panels 4, filter paper 3's bottom block is connected with lower end cover 6, filter paper 3's top block is connected with upper end cover 9, the top of center tube 2 and the bottom of upper end cover 9 are closely laminated, the bottom of center tube 2 and lower end cover 6 are closely laminated, the surface of lower end cover 6 and the surface of upper end cover 9 block respectively at the inner chamber of two collars 5, filter housing 1 inner chamber's top block is connected with chassis 10, a plurality of logical grooves have been seted up to chassis 10's top annular, upper end cover 9's top fixedly connected with fixed cover 11, chassis 10's bottom fixedly connected with and fixed cover 11 looks block's drum 12, chassis 10's bottom fixedly connected with annular clamping 13, upper end cover 9's top fixedly connected with block is in annular clamping 13 inner chamber's anti-backflow sealing member 14, anti-backflow sealing member 14 shape is the ascending loudspeaker form of heavy-calibre.

Working principle: when the oil flows to the inner cavity of the filter shell 1 through the through groove at the top of the chassis 10, the top of the backflow prevention sealing element 14 is bent downwards due to pressure, the top of the backflow prevention sealing element 14 is separated from the inner cavity of the annular clamping element 13, the oil is filtered by the filter paper 3 in the inner cavity of the filter shell 1, then enters the inner cavity of the central tube 2 through the through hole formed in the surface of the central tube 2, the filtered oil flows out through the inner cavity of the cylinder 12, after the filter paper 3 is not replaced for a long time, the pressure is caused to the backflow prevention sealing element 14 by the oil in the inner cavity of the filter shell 1 due to the blocking of the filter paper 3, the backflow prevention sealing element 14 is returned to the inner cavity of the annular clamping element 13 again, the backflow of the oil is avoided, the pressure is supplied to the bypass valve 7 at the moment, the spring 8 is compressed at the moment, the bypass valve 7 is opened, and the purpose of effectively avoiding the backflow of the oil in the filter can be effectively avoided.

To sum up: this prevent backflow filter, through the setting of filter paper 3, filters the engine oil, through the cooperation use of fixed cover 11 and drum 12, avoids unfiltered engine oil to get into the inner chamber of center tube 2, through the shape setting of preventing backflow sealing member 14, avoids engine oil to take place to flow backwards, can reach the purpose that effectively avoids the interior petrol of filter to take place to flow backwards.

Claims

1. A backflow-preventing filter, which is characterized by comprising a filter shell (1) and a central tube (2): the utility model provides a filter device, including filter shell (1), filter tube (2), filter paper (3) have been seted up to the surface cover of center tube (2), a plurality of mounting panels (4) are installed to the inner chamber of filter shell (1), and the equal fixedly connected with collar (5) in top and the bottom of inner chamber are enclosed to a plurality of mounting panels (4), the bottom block of filter paper (3) is connected with bottom end cover (6), the top block of filter paper (3) is connected with upper end cover (9), the top block of filter shell (1) inner chamber is connected with chassis (10), a plurality of logical grooves have been seted up to the top annular of chassis (10), the top fixedly connected with fixed cover (11) of upper end cover (9), the bottom fixedly connected with annular fastener (13) of chassis (10), the top fixedly connected with block of upper end cover (9) is in the sealing member (14) of preventing backflow in annular fastener (13) inner chamber, sealing member (14) are the shape of upwards loudspeaker that prevents that the bore is big.

2. A backflow prevention filter according to claim 1, characterized in that the folded paper of the filter paper (3) is uniform in height and distance distribution.

3. A backflow prevention filter according to claim 2, characterized in that the top of the lower end cap (6) is provided with a bypass valve (7), and the inner cavity of the bypass valve (7) is provided with a spring (8).

4. A backflow prevention filter according to claim 3, wherein the top of the center tube (2) is tightly fitted to the bottom of the upper end cap (9), and the bottom of the center tube (2) is tightly fitted to the lower end cap (6).

5. A backflow prevention filter according to claim 4, wherein the surface of the lower end cap (6) and the surface of the upper end cap (9) are respectively clamped in the inner cavities of the two mounting rings (5).

6. The backflow prevention filter according to claim 5, wherein a sealing ring (15) is fixedly connected to the top of the inner cavity of the filter housing (1), and a clamping groove (16) matched with the sealing ring (15) is formed in the top of the chassis (10).