Pipeline oil filter

Abstract

The utility model provides a pipeline oil filter. The pipeline oil filter comprises a hollow connecting sleeve and a hollow connecting piece, one end of the connecting piece is inserted into one end of the connecting sleeve, and the connecting piece and the connecting sleeve are detachably connected and peripherally sealed; the other end of the connecting sleeve is provided with a first connector used for being connected with a pipeline, and the other end of the connecting piece is provided with a second connector used for being connected with the pipeline. One end of the connecting piece is blocked, a small-diameter part is formed at one end of the connecting piece, a plurality of oil passing holes are formed in the small-diameter part in the circumferential direction, and the outer circumferential wall of the small-diameter part is wrapped with a filter screen; the device can be installed on a pipeline between a hydraulic oil pump and a hydraulic oil tank so as to prevent impurities in hydraulic oil from entering the hydraulic pump and an oil cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of oil filtering devices, in particular to a pipeline oil filter. Background Art

[0002] During the operation of construction machinery, hydraulic oil is needed. For example, the cylinder in the construction machinery needs to be driven by hydraulic oil. In the current construction machinery, the hydraulic oil pipe connected to the cylinder is directly connected to the hydraulic oil tank through the hydraulic pump. Therefore, when the hydraulic pump pumps the hydraulic oil, if the hydraulic oil in the hydraulic oil tank contains impurities, the impurities will be pumped into the cylinder together with the hydraulic oil. After the hydraulic oil containing impurities flows through the hydraulic pump and enters the cylinder, the impurities will cause wear to the hydraulic pump and the piston in the cylinder, that is, the service life of the hydraulic pump and the cylinder will be reduced. Utility Model Content

[0003] The technical problem to be solved by the utility model is that impurities in the hydraulic oil may enter the oil pump and the oil cylinder along with the hydraulic oil. In order to overcome the defects of the above-mentioned prior art, the utility model provides a pipeline oil filter that can be installed on the pipeline between the hydraulic oil pump and the hydraulic oil tank to prevent impurities in the hydraulic oil from entering the hydraulic pump and the oil cylinder.

[0004] The utility model provides a pipeline oil filter, comprising a hollow connecting sleeve and a hollow connecting piece; one end of the connecting piece is inserted into one end of the connecting sleeve, the connecting piece and the connecting sleeve are detachably connected and circumferentially sealed; the other end of the connecting sleeve is provided with a first joint for connecting to the pipeline, and the other end of the connecting piece is provided with a second joint for connecting to the pipeline; one end of the connecting piece is blocked, and one end of the connecting piece forms a small-diameter portion, a plurality of oil-passing holes are circumferentially provided on the small-diameter portion, and a filter screen is wrapped on the outer peripheral wall of the small-diameter portion.

[0005] After adopting the above structure, the utility model can be installed on the pipeline between the hydraulic oil pump and the hydraulic oil tank. When the hydraulic oil pump draws hydraulic oil from the hydraulic oil tank, the pipeline oil filter can filter the impurities in the hydraulic oil under the action of the filter, thereby preventing the impurities from flowing through the hydraulic pump and entering the oil cylinder, and further effectively avoiding the wear of the hydraulic pump and the piston in the oil cylinder, that is, the service life of the hydraulic pump and the oil cylinder can be extended.

[0006] In one possible embodiment, the filter screen is a sheet-like structure, which is curled and wrapped around the outer peripheral wall of the small diameter portion, and the head and tail ends of the filter screen are welded and fixed; by adopting this structure, after the filter screen is curled and wrapped around the outer peripheral wall of the small diameter portion, and the head and tail ends of the filter screen are welded and fixed, the filter screen can be reliably wrapped around the outer peripheral wall of the small diameter portion.

[0007] In a possible implementation, a plurality of filter holes on the filter screen are respectively axially aligned with one of the oil holes; by adopting this structure, the oil can flow through the filter holes and the oil holes more smoothly.

[0008] In one possible embodiment, a circumferential limiting structure is provided between the filter screen and the connecting member; by providing the circumferential limiting structure between the filter screen and the connecting member, after the filter screen and the connecting member are assembled, the filter screen can be prevented from rotating freely relative to the connecting member, thereby preventing the filter holes and the oil holes from being misaligned with each other.

[0009] In one possible embodiment, the circumferential limiting structure includes at least one limiting protrusion arranged on one end of the filter screen, and a limiting groove corresponding to the limiting protrusion is arranged on the outer wall of the connecting member, and the limiting protrusion is embedded in the limiting groove; by adopting this structure, after the limiting protrusion is engaged with the limiting groove, the circumferential limiting of the filter screen and the connecting member can be achieved, thereby preventing the filter screen from rotating freely relative to the connecting member, that is, preventing the filter hole and the oil hole from being misaligned with each other.

[0010] In a possible embodiment, a plurality of circumferentially spaced limiting protrusions are provided on one end of the filter, and a limiting groove corresponding to the plurality of limiting protrusions is provided on the outer wall of the connecting piece, and each limiting protrusion is embedded in the limiting groove at the corresponding position; by adopting this structure, after each limiting protrusion is engaged with the limiting groove at the corresponding position, the circumferential limitation of the filter and the connecting piece can be further achieved, thereby further preventing the filter from rotating freely relative to the connecting piece, that is, further preventing the filter hole and the oil hole from being misaligned with each other.

[0011] In a possible embodiment, one end of the filter screen is abutted against the connecting piece, and one end of the filter screen is welded and fixed to the connecting piece and circumferentially sealed; an annular convex edge is provided on the outer wall of one end of the connecting piece, and the other end of the filter screen is abutted against the annular convex edge, and the other end of the filter screen is welded and fixed to the annular convex edge and circumferentially sealed; by adopting this structure, the filter screen can be reliably fixed to the small diameter portion, and because one end of the filter screen is welded and fixed to the connecting piece and circumferentially sealed, and the other end of the filter screen is welded and fixed to the annular convex edge and circumferentially sealed, it is possible to prevent impurities in the oil from flowing through the gap between the two ends of the filter screen in the axial direction and the small diameter section, that is, it can be ensured that the filter screen can reliably filter impurities in the oil.

[0012] In a possible implementation manner, the middle portion of the connecting piece is inserted into one end of the connecting sleeve and is threadedly connected to the connecting sleeve; by adopting this structure, the connecting piece can be reliably connected to the connecting sleeve.

[0013] In a possible embodiment, an annular boss is provided on the outer wall of the connecting piece, the annular boss is located on the outer side of the connecting sleeve, a sealing ring is embedded on the side of the annular boss facing the connecting sleeve, one end of the connecting sleeve is tightly attached to the sealing ring, and the sealing ring is used for circumferentially sealing the gap between the connecting sleeve and the connecting piece; by adopting this structure, the sealing ring can reliably seal the gap between the connecting sleeve and the connecting piece, thereby avoiding oil leakage.

[0014] In a possible embodiment, the outer peripheral walls of the connecting sleeve and the annular boss are both regular hexagonal structures; by adopting this structure, the connecting sleeve and the annular boss can be reliably matched with the wrench, thereby facilitating the wrench to relatively twist the connecting sleeve and the connecting piece, that is, it can facilitate the disassembly and assembly of the connecting sleeve and the connecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of a partially exploded three-dimensional structure of the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0019] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0020] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] See also Figure 1-3 As shown, an embodiment of the present application discloses a pipeline oil filter, comprising a hollow connecting sleeve 1 and a hollow connecting piece 2; one end of the connecting piece 2 is inserted into one end of the connecting sleeve 1, and the connecting piece 2 is detachably connected to the connecting sleeve 1 and circumferentially sealed; the other end of the connecting sleeve 1 is provided with a first joint 11 for connecting to the pipeline, and the other end of the connecting piece 2 is provided with a second joint 21 for connecting to the pipeline; one end of the connecting piece 2 is blocked, and one end of the connecting piece 2 forms a small diameter portion 22, and a plurality of oil holes 23 are circumferentially provided on the small diameter portion 22, and a filter screen 3 is wrapped on the outer peripheral wall of the small diameter portion 22.

[0023] The filter screen 3 is a sheet structure, and the filter screen 3 is curled and wrapped around the outer peripheral wall of the small diameter portion 22, and the head and tail ends of the filter screen 3 are welded and fixed; by adopting this structure, after the filter screen is curled and wrapped around the outer peripheral wall of the small diameter portion, and after the head and tail ends of the filter screen are welded and fixed, the filter screen can be reliably wrapped around the outer peripheral wall of the small diameter portion.

[0024] The plurality of filter holes 31 on the filter screen 3 are respectively aligned axially with one of the oil holes 23 ; by adopting this structure, the oil can flow through the filter holes and the oil holes more smoothly.

[0025] A circumferential limiting structure is arranged between the filter screen 3 and the connecting member 2; by arranging the circumferential limiting structure between the filter screen and the connecting member, after the filter screen and the connecting member are assembled, the filter screen can be prevented from rotating freely relative to the connecting member, thereby preventing the filter holes and the oil holes from being misaligned with each other.

[0026] The circumferential limiting structure includes at least one limiting protrusion 32 arranged on one end of the filter 3, and a limiting groove 24 corresponding to the limiting protrusion 32 is arranged on the outer wall of the connecting member 2, and the limiting protrusion 32 is embedded in the limiting groove 24; by adopting this structure, after the limiting protrusion is engaged with the limiting groove, the circumferential limiting of the filter and the connecting member can be achieved, thereby preventing the filter from rotating freely relative to the connecting member, that is, preventing the filter hole and the oil hole from being misaligned with each other.

[0027] A plurality of circumferentially spaced limiting protrusions 32 are provided on one end of the filter 3, and limiting grooves 24 corresponding to the plurality of limiting protrusions 32 are provided on the outer wall of the connecting member 2, and each limiting protrusion 32 is embedded in the limiting groove 24 at the corresponding position; by adopting this structure, after each limiting protrusion is engaged with the limiting groove at the corresponding position, the circumferential limitation of the filter and the connecting member can be further achieved, thereby further preventing the filter from rotating freely relative to the connecting member, that is, further preventing the filter hole and the oil hole from being misaligned with each other.

[0028] One end of the filter screen 3 abuts against the connecting piece 2, and one end of the filter screen 3 is welded and fixed to the connecting piece 2 and circumferentially sealed; an annular convex edge 25 is provided on the outer wall of one end of the connecting piece 2, and the other end of the filter screen 3 abuts against the annular convex edge 25, and the other end of the filter screen 3 is welded and fixed to the annular convex edge 25 and circumferentially sealed; by adopting this structure, the filter screen can be reliably fixed to the small diameter portion, and because one end of the filter screen is welded and fixed to the connecting piece and circumferentially sealed, and the other end of the filter screen is welded and fixed to the annular convex edge and circumferentially sealed, it is possible to prevent impurities in the oil from flowing through the gap between the two ends of the filter screen in the axial direction and the small diameter section, that is, it can be ensured that the filter screen can reliably filter impurities in the oil.

[0029] The middle part of the connecting piece 2 is inserted into one end of the connecting sleeve 1 and is threadedly connected to the connecting sleeve 1; by adopting this structure, the connecting piece can be reliably connected to the connecting sleeve.

[0030] An annular boss 26 is provided on the outer wall of the connecting piece 2, and the annular boss 26 is located on the outer side of the connecting sleeve 1. A sealing ring 4 is embedded on the side of the annular boss 26 facing the connecting sleeve 1. One end of the connecting sleeve 1 is tightly attached to the sealing ring 4, and the sealing ring 4 is used for circumferentially sealing the gap between the connecting sleeve 1 and the connecting piece 2. By adopting this structure, the sealing ring can reliably seal the gap between the connecting sleeve and the connecting piece, thereby avoiding oil leakage.

[0031] The outer peripheral walls of the connecting sleeve 1 and the annular boss 26 are both regular hexagonal structures; by adopting this structure, the connecting sleeve and the annular boss can be reliably matched with the wrench, so that it is convenient for the wrench to relatively twist the connecting sleeve and the connecting piece, that is, it can facilitate the disassembly and assembly of the connecting sleeve and the connecting piece.

[0032] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0033] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A pipeline oil filter, characterized in that: The invention comprises a hollow connecting sleeve (1) and a hollow connecting piece (2); one end of the connecting piece (2) is inserted into one end of the connecting sleeve (1); the connecting piece (2) and the connecting sleeve (1) are detachably connected and circumferentially sealed; the other end of the connecting sleeve (1) is provided with a first joint (11) for connecting to a pipeline; the other end of the connecting piece (2) is provided with a second joint (21) for connecting to a pipeline; one end of the connecting piece (2) is blocked, and one end of the connecting piece (2) forms a small-diameter portion (22); a plurality of oil holes (23) are circumferentially provided on the small-diameter portion (22); and a filter screen (3) is wrapped on the outer peripheral wall of the small-diameter portion (22).

2. The pipeline oil filter according to claim 1, characterized in that: The filter screen (3) is a sheet-like structure. The filter screen (3) is curled and wrapped around the outer peripheral wall of the small-diameter portion (22). The head end and the tail end of the filter screen (3) are welded and fixed.

3. The pipeline oil filter according to claim 1 or 2, characterized in that: The plurality of filter holes (31) on the filter screen (3) are respectively axially aligned with one of the oil holes (23).

4. The pipeline oil filter according to claim 3, characterized in that: A circumferential limiting structure is provided between the filter screen (3) and the connecting member (2).

5. The pipeline oil filter according to claim 4, characterized in that: The circumferential limiting structure comprises at least one limiting protrusion (32) arranged on one end of the filter screen (3); a limiting groove (24) corresponding to the limiting protrusion (32) is arranged on the outer wall of the connecting member (2); and the limiting protrusion (32) is embedded in the limiting groove (24).

6. The pipeline oil filter according to claim 5, characterized in that: A plurality of limiting protrusions (32) are arranged on one end of the filter screen (3) and are distributed at intervals in the circumferential direction. A limiting groove (24) corresponding to the plurality of limiting protrusions (32) is arranged on the outer wall of the connecting member (2). Each limiting protrusion (32) is embedded in the limiting groove (24) at a corresponding position.

7. The pipeline oil filter according to claim 1 or 2 or 4 or 5 or 6, characterized in that: One end of the filter screen (3) abuts against the connecting piece (2), and one end of the filter screen (3) is fixedly welded to the connecting piece (2) and circumferentially sealed; an annular convex edge (25) is provided on the outer wall of one end of the connecting piece (2), and the other end of the filter screen (3) abuts against the annular convex edge (25), and the other end of the filter screen (3) is fixedly welded to the annular convex edge (25) and circumferentially sealed.

8. The pipeline oil filter according to claim 1, characterized in that: The middle portion of the connecting piece (2) is inserted into one end of the connecting sleeve (1) and is threadedly connected to the connecting sleeve (1).

9. The pipeline oil filter according to claim 8, characterized in that: An annular boss (26) is provided on the outer wall of the connecting piece (2), and the annular boss (26) is located on the outer side of the connecting sleeve (1). A sealing ring (4) is embedded on the side of the annular boss (26) facing the connecting sleeve (1), and one end of the connecting sleeve (1) is tightly attached to the sealing ring (4). The sealing ring (4) is used to circumferentially seal the gap between the connecting sleeve (1) and the connecting piece (2).

10. The pipeline oil filter according to claim 9, characterized in that: The outer peripheral walls of the connecting sleeve (1) and the annular boss (26) are both regular hexagonal structures.

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