Pulse type oil filter

Abstract

The utility model relates to a pulse type oil filter which comprises a machine shell, a filter element and a shell cover, an upper supporting plate is installed at the upper end of the filter element, an annular groove is formed in the shell cover, a plurality of oil inlet channels communicated with the annular groove are formed in the bottom of the shell cover, and adjusting valves are arranged in the oil inlet channels. Magnet blocks used for driving the adjusting valves are fixedly installed on the upper supporting plate and correspond to the adjusting valves in a one-to-one mode, and the adjusting valves are located under the oil inlet channel. According to the pulse type engine oil filter, the adjusting valve is arranged in the oil inlet channel, the adjusting valve is driven by matching with the magnet block arranged on the filter element, the flow / flow speed of engine oil flowing into the machine shell through the oil inlet channel can be dynamically adjusted, and therefore the filter element can keep up-down pulse type movement for a long time in the machine shell; therefore, large-scale impurity enrichment at a certain position of the filter element is effectively avoided, and the magnet block can also adsorb a part of iron-containing impurities; finally, the effects of effectively prolonging the service life of the filter element and reducing the replacement frequency of the filter element are achieved.

Description

Technical Field

[0001] The utility model relates to a pulse type oil filter, belonging to the technical field of oil filters. Background Art

[0002] An oil filter, also known as an oil filter element, is used to remove impurities such as dust, metal particles, carbon deposits, and soot particles in the oil to protect the engine. During the operation of the engine, metal chips, dust, carbon deposits oxidized at high temperatures, colloidal precipitates, water, etc. continuously mix into the lubricating oil. The function of the oil filter is to filter out these mechanical impurities and colloids, keep the lubricating oil clean, and extend its service life. The oil filter should have strong filtering ability, small flow resistance, long service life and other performances. Generally, several oil filters with different filtering abilities - a strainer, a coarse filter, and a fine filter - are installed in the lubrication system, and are respectively connected in parallel or in series in the main oil passage.

[0003] The existing oil filters usually need to install a spring to buffer the filter element. Generally, as disclosed in the "oil filter" with the publication (announcement) number CN203347882U, it includes an oil filter housing and a threaded cover plate. A filter element is arranged in the oil filter housing. Upper and lower filter covers are respectively arranged at the upper and lower ends of the filter element. The threaded cover plate is located on one side of the upper filter cover. An inlet and an outlet are arranged on the threaded cover plate. A boosting nut for facilitating the loading and unloading of the oil filter is arranged on the other side of the oil filter housing relative to the threaded cover plate. A support spring is arranged between the lower filter cover and the oil filter housing. The setting of the support spring can enable the filter element to be well buffered when being impacted by the oil fluid and is not easily damaged.

[0004] During the inflow of oil in the existing oil filter, when there is a large hydraulic pressure difference inside and outside the oil filter, the generated impact force will cause the filter element to move in a pulsed manner up and down, and it relies on the spring to buffer; after the internal and external pressures are stable, the filter element rarely moves in a pulsed manner up and down again. Through long-term observation, it is found that if the filter element can move in a pulsed manner up and down in the oil filter according to a certain rule for a long time, it can avoid impurities from adhering to the same area in a large area, and thus can effectively extend the service time of the filter element and reduce the frequency of filter element replacement.

[0005] Based on this, the present utility model is proposed. Content of the Utility Model

[0006] Aiming at the deficiencies existing in the prior art, the present utility model provides a pulse type oil filter, and the specific technical solution is as follows:

[0007] A pulse type oil filter, comprising a casing, a filter element located inside the casing, and a casing cover located at the upper end of the casing. A lower support plate is installed at the lower end of the filter element, and an upper support plate is installed at the upper end of the filter element. A spring is installed between the lower support plate and the bottom of the casing; One side of the casing cover is provided with an oil inlet pipe and an oil outlet pipe. A central pipe is provided at the center of the upper end of the filter element, and the oil outlet pipe is communicated with the central pipe. An annular groove is provided inside the casing cover, and the annular groove is communicated with the oil inlet pipe. A plurality of oil inlet channels communicating with the annular groove are provided at the bottom of the casing cover. A regulating valve is provided in the oil inlet channel, and a magnet block for driving the regulating valve is fixedly installed on the upper support plate. The magnet block corresponds to the regulating valve one by one, and the regulating valve is located directly below the oil inlet channel.

[0008] As a further optimized improvement scheme, the regulating valve includes a magnet column arranged in a repulsive manner with the magnet block. A convex portion with a circular arc cross-section is provided on one side of the oil inlet channel. The magnet column is provided with a plurality of small holes penetrating through the upper and lower ends of the magnet column. A limiting groove with a circular arc cross-section is provided on the side of the magnet column close to the convex portion. A convex portion with a circular arc cross-section is provided at the upper end of the magnet column. The radius corresponding to the limiting groove is greater than the radius corresponding to the convex portion.

[0009] As a further optimized improvement scheme, a through hole penetrating through the convex portion is provided at the center of the convex portion. A tapered hole is provided between the through hole and the annular groove. The large end of the tapered hole is communicated with the annular groove, and the small end of the tapered hole is communicated with the through hole.

[0010] As a further optimized improvement scheme, the ratio of the radius corresponding to the limiting groove to the radius corresponding to the convex portion is greater than or equal to 3.

[0011] As a further optimized improvement scheme, the aperture of the small hole is less than or equal to 5mm.

[0012] As a further optimized improvement scheme, the central pipe is a flexible pipe.

[0013] As a further optimized improvement scheme, an oil outlet channel with a clearance fit with the central pipe is provided at the center of the casing cover.

[0014] As a further optimized improvement scheme, both the oil inlet pipe and the oil outlet pipe are threadedly connected to the casing cover.

[0015] As a further optimized improvement scheme, the upper end of the central pipe is threadedly connected to the casing cover.

[0016] As a further optimized improvement scheme, a bypass valve is embedded in the center of the lower end of the filter element.

[0017] The beneficial effects of the present utility model:

[0018] 1. The pulse oil filter can dynamically adjust the flow rate / velocity of the oil flowing from the oil inlet passage into the casing by setting a regulating valve in the oil inlet passage and cooperating with a magnet block arranged on the filter element to drive the regulating valve, so that the filter element can maintain a long-term up-and-down pulse movement in the casing, effectively avoiding large-scale accumulation of impurities at a certain part of the filter element. The magnet block can also adsorb a part of iron-containing impurities; ultimately, the service life of the filter element is effectively extended, and the frequency of filter element replacement is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the pulse oil filter of the present utility model;

[0020] Figure 2 It is a schematic diagram of the inside of the shell cover of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model.

[0022] In the description of the present utility model, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] Embodiment 1

[0025] As Figure 1 、 2As shown in the figure, the pulse oil filter includes a housing 10, a filter element 11 located inside the housing 10, and a housing cover 20 located at the upper end of the housing 10. A lower support plate 12 is installed at the lower end of the filter element 11, an upper support plate 13 is installed at the upper end of the filter element 11, and a spring 14 is installed between the lower support plate 12 and the bottom of the housing 10. On one side of the housing cover 20, an oil inlet pipe 30 and an oil outlet pipe 40 are provided. A central pipe 16 is provided at the center of the upper end of the filter element 11, and the oil outlet pipe 40 is communicated with the central pipe 16.

[0026] The housing 10, the filter element 11, the housing cover 20, the lower support plate 12, the upper support plate 13, the spring 14, the oil inlet pipe 30, the oil outlet pipe 40, and the central pipe 16 are all prior arts and will not be elaborated here.

[0027] An annular groove 21 is provided inside the housing cover 20. The annular groove 21 is communicated with the oil inlet pipe 30. A plurality of oil inlet channels 22 communicated with the annular groove 21 are provided at the bottom of the housing cover 20. A regulating valve is provided in the oil inlet channel 22. A magnet block 15 for driving the regulating valve is fixedly installed on the upper support plate 13. The magnet block 15 corresponds to the regulating valve one by one, and the regulating valve is located directly below the oil inlet channel 22.

[0028] In this embodiment, the oil enters the annular groove 21 through the oil inlet pipe 30. Then, when passing through the oil inlet channel 22, due to the drive of the magnet block 15, the regulating valve can adjust the flow rate / velocity of the oil flowing from the oil inlet channel 22 into the housing 10, so that the filter element 11 can maintain a long-term up-and-down pulsed movement inside the housing 10, and the vibration is buffered by the spring 14. During the vibration process, it can effectively prevent large-scale accumulation of impurities at a certain place on the filter element 11. In addition, the magnet block 15 can also adsorb a part of iron-containing impurities. Finally, it achieves the beneficial effects of effectively extending the service life of the filter element 11 and reducing the replacement frequency of the filter element 11.

[0029] Embodiment 2

[0030] In Embodiment 1, the regulating valve includes a magnet column 50 arranged in a repulsive manner with the magnet block 15. On one side of the oil inlet channel 22, a convex portion 221 with a circular arc cross-section is provided. The magnet column 50 is provided with a plurality of small holes 52 penetrating through the upper and lower ends of the magnet column 50. On the side of the magnet column 50 close to the convex portion 221, a limiting groove 53 with a circular arc cross-section is provided. The upper end of the magnet column 50 is provided with a convex portion 51 with a circular arc cross-section. The radius corresponding to the limiting groove 53 is greater than the radius corresponding to the convex portion 221. The radius corresponding to the limiting groove 53 refers to the radius of the corresponding circle.

[0031] A through hole 24 penetrating the protrusion 221 is provided at the center of the protrusion 221. A tapered hole 23 is provided between the through hole 24 and the annular groove 21. The large end of the tapered hole 23 communicates with the annular groove 21, and the small end of the tapered hole 23 communicates with the through hole 24.

[0032] Initially, due to the repulsive magnetic force, the magnet column 50 is located upward near the annular groove 21. At this time, there is a curved channel between the limiting groove 53 and the protrusion 221. In addition, there may also be a gap channel between the magnet column 50 and the oil inlet channel 22. When engine oil flows into the engine housing 10 through the curved channel and the gap channel, the pressure generated during the inflow process will cause the magnet column 50 to move downward. Under the impact of the inflowing engine oil, the filter element 11 will also perform an up-and-down pulsating movement for a period of time. During the up-and-down pulsating movement of the filter element 11, the distance between the magnet block 15 on the filter element 11 and the magnet column 50 continuously changes, resulting in continuous changes in the repulsive magnetic force between the two. This prompts the magnet column 50 to reciprocate up and down in the oil inlet channel 22, effectively changing the sizes of the curved channel and the gap channel. The continuous change in the sizes of the curved channel and the gap channel will cause the flow rate of the engine oil injected into the engine housing 10 to continuously change, so that the impact force received by the filter element 11 also keeps changing. Repeating this process can effectively extend the cycle of the up-and-down pulsating movement of the filter element 11.

[0033] It should be noted that a part of the engine oil in the annular groove 21 is shot towards the limiting groove 53 through the tapered hole 23 and the through hole 24, enabling the magnet column 50 to move up and down along the vertical side wall on one side of the oil inlet channel 22.

[0034] The radius corresponding to the limiting groove 53 is greater than the radius corresponding to the protrusion 221. On the one hand, it can prevent the magnet column 50 from detaching from the oil inlet channel 22 and completely entering the engine housing 10. On the other hand, it will cause the limiting groove 53 and the protrusion 221 not to fit completely, resulting in the magnet column 50 being no longer able to move under the extrusion of the oil pressure. At the same time, with the function of the convex part 51, it can ultimately prompt the magnet column 50 to move up and down better in the oil inlet channel 22.

[0035] Embodiment 3

[0036] In Embodiment 2, to ensure the stable operation of the regulating valve, the ratio of the radius corresponding to the limiting groove 53 to the radius corresponding to the protrusion 221 is greater than or equal to 3. The aperture of the small hole 52 is less than or equal to 5 mm.

[0037] In some embodiments, the central tube 16 is a flexible tube.

[0038] In some other embodiments, an oil outlet passage that is in clearance fit with the central tube 16 is provided at the center of the shell cover 20. In this way, during the up-and-down movement of the central tube 16, the oil outlet passage can still be kept in communication with the central tube 16.

[0039] Embodiment 4

[0040] For the convenience of installation and disassembly, both the inlet pipe 30 and the outlet pipe 40 are threadedly connected to the shell cover 20. The upper end of the central tube 16 is threadedly connected to the shell cover 20. At this time, the central tube 16 is a flexible tube, and the threaded connection is completed by installing a pipe joint at the end.

[0041] Embodiment 5

[0042] A bypass valve is embedded at the center of the lower end of the filter element 11. When the filter element 11 becomes blocked, the hydraulic pressure in the machine housing 10 rises to a certain level, so that the bypass valve opens, and the engine oil in the machine housing 10 enters the central tube 16 through the bypass valve.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulse oil filter, comprising a casing (10), a filter element (11) located inside the casing (10), and a casing cover (20) located at the upper end of the casing (10), wherein a lower support plate (12) is installed at the lower end of the filter element (11), an upper support plate (13) is installed at the upper end of the filter element (11), and a spring (14) is installed between the lower support plate (12) and the casing bottom of the casing (10); an oil inlet pipe (30) and an oil outlet pipe (40) are arranged on one side of the casing cover (20), a central pipe (16) is arranged at the center of the upper end of the filter element (11), and the oil outlet pipe (40) is connected to the central pipe (16), characterized in that: The shell cover (20) is provided with an annular groove (21) inside, the annular groove (21) is communicated with the oil inlet pipe (30), the bottom of the shell cover (20) is provided with a plurality of oil inlet channels (22) communicated with the annular groove (21), a regulating valve is provided in the oil inlet channel (22), a magnet block (15) for driving the regulating valve is fixedly mounted on the upper support plate (13), the magnet block (15) corresponds to the regulating valve one by one, and the regulating valve is located directly below the oil inlet channel (22).

2. A pulse oil filter according to claim 1, characterized in that: The regulating valve comprises a magnet column (50) arranged to repel the magnet block (15); a protrusion (221) with a circular arc cross section is arranged on one side of the oil inlet channel (22); the magnet column (50) is provided with a plurality of small holes (52) penetrating the upper and lower ends of the magnet column (50); a limiting groove (53) with a circular arc cross section is arranged on the side of the magnet column (50) close to the protrusion (221); a convex portion (51) with a circular arc cross section is arranged at the upper end of the magnet column (50); and a radius corresponding to the limiting groove (53) is greater than a radius corresponding to the protrusion (221).

3. A pulse oil filter according to claim 2, characterized in that: A through hole (24) penetrating the protrusion (221) is provided at the center of the protrusion (221); a tapered hole (23) is provided between the through hole (24) and the annular groove (21); the large end of the tapered hole (23) is connected to the annular groove (21); and the small end of the tapered hole (23) is connected to the through hole (24).

4. A pulse oil filter according to claim 2, characterized in that: The ratio of the radius corresponding to the limiting groove (53) to the radius corresponding to the protrusion (221) is greater than or equal to 3.

5. The pulse oil filter according to claim 2, characterized in that: The diameter of the small hole (52) is less than or equal to 5 mm.

6. The pulse oil filter according to claim 1, characterized in that: The central tube (16) is a hose.

7. The pulse oil filter according to claim 1, characterized in that: An oil outlet passage which is clearance-matched with the central tube (16) is provided at the center of the shell cover (20).

8. The pulse oil filter according to claim 1, characterized in that: The oil inlet pipe (30) and the oil outlet pipe (40) are both threadedly connected to the shell cover (20).

9. The pulse oil filter according to claim 6, characterized in that: The upper end of the central tube (16) is threadedly connected to the shell cover (20).

10. The pulse oil filter according to claim 1, characterized in that: A bypass valve is embedded in the center of the lower end of the filter element (11).

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