CN209742997U

CN209742997U - Oil filter

Info

Publication number: CN209742997U
Application number: CN201920201009.7U
Authority: CN
Inventors: 蒋海军
Original assignee: Nanjing Blue Oxygen Filtration Environmental Protection Technology Co Ltd
Current assignee: Nanjing Blue Oxygen Filtration Environmental Protection Technology Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2019-12-06
Anticipated expiration: 2029-02-15

Abstract

The utility model discloses an oil filter, its include casing (1), with upper cover (2) that casing (1) links to each other, set up in center tube (3) in casing (1) and with filter core (4) that center tube (3) link to each other, oil filter still including install in gland (51) and case (52) in upper cover (2) and set up in gland (51) with elastic component (53) between case (52), filter core (4) include with communicating draining hole (402) of center tube (3), elastic component (53) drive case (52) are sealed draining hole (402), gland (51) are adjustable the compression degree of elastic component (53). The utility model discloses an oil cleaner can adjust the gland of elastic component compression capacity through the setting for the pressure of bypass valve can be convenient adjust, more do benefit to the protection engine, guarantee the reliable operation of equipment.

Description

Oil filter

Technical Field

The utility model relates to an oil filters technical field, especially relates to an oil cleaner.

Background

Various parts in the engine need lubricating of engine oil to realize normal operation, but metal debris, entering dust, carbon deposit oxidized at high temperature and partial water vapor generated when the parts operate can be continuously mixed into the engine oil, the quality of the engine oil is reduced after a long time, and the normal operation of the engine can be influenced when the parts operate seriously. The oil filter mainly has the functions of filtering most impurities in the engine oil, keeping the engine oil clean and prolonging the normal service life of the engine oil.

The bypass valve is the most important safety valve in the oil filter, and when the oil pressure is overloaded due to the blockage of the filter element or other abnormal conditions, the bypass valve is opened, so that the engine oil directly enters the engine for lubrication without being filtered, and the engine is protected. In current oil filters, the bypass valve is often disposed within the central tube of the filter element. For example, chinese utility model patent No. CN 203703577U discloses a bypass valve for an oil filter, in which a piston and a spring are both disposed in a center tube.

The problem of the oil filter in the prior art is that the opening pressure of the bypass valve cannot be adjusted, and under the conditions of aging of some springs and deviation of installation size, the opening pressure can have larger deviation with the design pressure, so that when the oil pressure is overloaded, the bypass valve cannot be opened under the specified pressure, and the engine is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil cleaner to the above-mentioned defect among the prior art, the opening pressure of its bypass valve can be adjusted.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides an oil filter, its include the casing, with upper cover that the casing links to each other, set up in center tube in the casing and with the filter core that the center tube links to each other, oil filter still including install in gland and case in the upper cover and set up in the gland with elastic component between the case, the filter core include with the communicating draining hole of center tube, the elastic component drive the case is sealed draining hole is rotatory the gland is adjustable the deflection of elastic component.

Furthermore, the utility model discloses still provide following subsidiary technical scheme:

The oil filter is characterized by further comprising a valve seat arranged in the upper cover, and the gland is in threaded connection with the valve seat.

The valve core is in sliding fit with the valve seat.

The valve core comprises a piston part matched with the valve seat in a sliding mode and a sealing part for sealing the oil drainage hole, and the diameter of the piston part is larger than that of the sealing part.

The upper cover is provided with a matching pipe, the valve seat is fixedly connected in the matching pipe, and the matching pipe is provided with an inner convex ring for positioning the valve seat.

The adapter is provided with a plurality of first hooks, and the upper cover plate is provided with a second hook which can be hooked with the first hooks.

The upper cover plate is provided with a second spherical surface surrounding the oil drainage hole, and the valve core is provided with a first spherical surface matched and sealed with the second spherical surface.

The upper cover is provided with a plurality of limiting columns which are abutted against the upper cover plate.

The casing is internally provided with a base, and the central tube is in threaded connection with the base.

The base is provided with an oil inlet.

Compared with the prior art, the utility model has the advantages of: the utility model discloses an oil cleaner can adjust the gland of elastic component compression capacity through the setting for the pressure of bypass valve can be convenient adjust, more do benefit to the protection engine, guarantee the reliable operation of equipment.

drawings

Fig. 1 is a schematic structural diagram of the oil filter of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic perspective view of the upper cover and the bypass valve according to the present invention.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings.

As shown in fig. 1 to fig. 3, the oil filter according to a preferred embodiment of the present invention includes a casing 1, an upper cover 2 connected to the casing 1, a central tube 3 disposed in the casing 1, a filter element 4 sleeved on the central tube 3, and a bypass valve 5 for sealing or opening an upper end of the central tube 3.

The housing 1 has a substantially cylindrical shape, and has a screw portion 10 screwed to the upper lid 2 at an upper end thereof and a base 11 at a lower end thereof. The base 11 comprises a seat portion 110 extending upward and a tube portion 111 extending downward, the seat portion 110 being screwed with the central tube 3; the tube portion 111 may communicate with an engine (not shown) such that oil exiting the tube portion 111 enters the engine for lubrication. An oil inlet 112 is further formed in the base 11, and normally, engine oil enters the inner cavity 12 of the housing 1 through the oil inlet 112, is filtered by the filter element 4, enters the center tube 3, and then flows out of the tube part 111.

The peripheral wall of the central tube 3 is provided with a plurality of through holes 30 so as to facilitate the engine oil to enter the central tube 3.

The upper cover 2 is provided with a fitting pipe 20 extending toward the inner cavity 12, the fitting pipe 20 is internally used for installing the bypass valve 5, and the lower end of the fitting pipe 20 is provided with a first clamping hook 21 and an inner convex ring 22 capable of positioning the bypass valve 5.

The filter element 4 includes an upper cover plate 40, a lower cover plate 41, and filter element paper 42 disposed between the upper and lower cover plates 41. The lower end of the filter element 4 is also provided with a sealing ring 43 embedded into the outer wall of the central tube 3, so that the lower end of the filter element 4 and the outer wall of the central tube 3 form sealing, engine oil is prevented from entering the central tube 3 from the lower end, and the sealing ring 43 is preferably a felt sealing ring gasket which has excellent sealing effect. Be provided with the second trip 401 that upwards extends on the upper cover plate 40, first trip 21 and second trip 401 have elasticity, can collude each other even the cooperation, adopt the structure that first trip 21 and second trip 401 colluded even, on the one hand, can be better the position of restriction filter core 4, on the other hand, be convenient for the installation and the change of filter core 4.

The upper cover 2 is also provided with a plurality of limiting columns 23 extending towards the inner cavity 12, and after the upper cover 2 rotates in place, the limiting columns 23 abut against the upper cover plate 40, so that the position of the filter element 4 is reliably ensured, and the filter element is prevented from inclining.

The bypass valve 5 includes a valve seat 50 installed in the fitting tube 20, a gland 51 screw-coupled with the valve seat 50, a valve core 52 slidably fitted in the valve seat 50, and an elastic member 53 provided between the gland 51 and the valve core 52.

Wherein, the valve seat 50 is fixedly connected with the adapter 20, and the lower end thereof is limited by the inner convex ring 22. The valve seat 50 and the adapter 20 may be connected by a tight fit, a threaded connection, or the like as is commonly known in the art. The valve body 52 includes a piston portion 520 and a sealing portion 521, and the piston portion 520 has a diameter larger than that of the sealing portion 521, is slidably fitted into the inner hole 500 of the valve seat 50, and is movable up and down in the inner hole 500. A first spherical surface 522 is provided below the seal 521. Still be provided with on the upper cover plate 40 of filter core 4 with first sphere 522 complex second sphere 400, second sphere 400 is cyclic annular, set up around the draining hole 402 that upper cover plate 40 center was seted up, the communicating port 31 with draining hole 402 is seted up to the center tube 3 upper end, after first sphere 522 and second sphere 400 contact, form close 360 degrees spherical seal between first sphere 522 and the second sphere 400, durability and sealed effect are better, can prevent that machine oil from getting into center tube 3 through oil groove 6 between first trip 21 and the second trip 401. When the first spherical surface 522 is separated from the second spherical surface 400, the engine oil can enter the central tube 3 through the oil drainage hole 402 and the communication port 31. Preferably, the second spherical surface 400 partially protrudes into the upper surface of the central tube 3 to facilitate the positioning of the filter cartridge 4.

The elastic member 53 is preferably a spring, which is disposed between the gland 51 and the valve core 52, and is in a compressed state, providing a pushing force that presses the valve core 52 toward the upper cover plate 40. By rotating the gland 51, the relative position of the gland 51 to the valve seat 50 can be changed, thereby changing the degree of compression of the elastic member 53, so that the force of the oil required to push the valve element 52 open (i.e., the opening pressure of the bypass valve) can be adjusted by adjusting the gland 51.

Under normal conditions, engine oil enters from the oil inlet 112, is filtered by the filter element 4, enters the central tube 3, and flows out through the tube part 111; when the engine oil pressure is overloaded due to the clogging of the filter element 4 or other abnormal conditions, the engine oil contacts the valve core 52 through the oil groove 6 between the first hook 21 and the second hook 401, and applies upward pressure to the lower bottom surface 523 of the piston portion 520, and after the pressure overcomes the elastic force of the elastic member 53, the valve core 52 moves upward and is separated from the upper cover plate 40, and the engine oil can directly enter the central tube 3 from the communication port 31 and flow into the engine from the tube portion 111, thereby preventing the engine from being damaged due to the lack of the engine oil. The opening pressure can be adjusted to a proper value by changing the screwing depth of the gland 51, and the engine can be protected more reliably.

The utility model discloses an oil cleaner can adjust the gland of elastic component compression, deflection through the setting for the pressure of bypass valve can be convenient adjust, more do benefit to the protection engine, guarantee the reliable operation of equipment.

It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides an oil filter, its includes casing (1), with upper cover (2) that casing (1) links to each other, set up in center tube (3) in casing (1) and with filter core (4) that center tube (3) link to each other, its characterized in that: the oil filter is characterized by further comprising a gland (51), a valve core (52) and an elastic piece (53) which are all installed in the upper cover (2), wherein the elastic piece (53) is arranged between the gland (51) and the valve core (52), the filter element (4) comprises an oil drainage hole (402) communicated with the central pipe (3), the elastic piece (53) drives the valve core (52) to seal the oil drainage hole (402), and the gland (51) is rotated to adjust the deformation of the elastic piece (53).

2. An oil filter according to claim 1 wherein: the sealing device further comprises a valve seat (50) arranged in the upper cover (2), and the pressing cover (51) is in threaded connection with the valve seat (50).

3. An oil filter according to claim 2 wherein: the valve core (52) is in sliding fit with the valve seat (50).

4. An oil filter according to claim 2 wherein: the valve core (52) comprises a piston part (520) matched with the valve seat (50) in a sliding mode and a sealing part (521) for sealing the oil drainage hole (402), and the diameter of the piston part (520) is larger than that of the sealing part (521).

5. An oil filter according to claim 2 wherein: the upper cover (2) is provided with a connecting pipe (20), the valve seat (50) is fixedly connected in the connecting pipe (20), and the connecting pipe (20) is provided with an inner convex ring (22) for positioning the valve seat (50).

6. An oil filter according to claim 5 wherein: the adapter tube (20) is provided with a plurality of first clamping hooks (21), the filter element (4) comprises an upper cover plate (40), and the upper cover plate (40) is provided with a second clamping hook (401) which can be hooked with the first clamping hooks (21).

7. An oil filter according to claim 1 wherein: the filter element (4) comprises an upper cover plate (40), a second spherical surface (400) surrounding the oil drainage hole (402) is arranged on the upper cover plate (40), and a first spherical surface (522) matched and sealed with the second spherical surface (400) is arranged on the valve core (52).

8. An oil filter according to claim 1 wherein: the filter element (4) comprises an upper cover plate (40), and the upper cover (2) is provided with a plurality of limiting columns (23) which are abutted against the upper cover plate (40).

9. An oil filter according to claim 1 wherein: the shell (1) is internally provided with a base (11), and the central tube (3) is in threaded connection with the base (11).

10. An oil filter according to claim 9 wherein: the base (11) is provided with an oil inlet (112).