Leakage-proof oil filter convenient to install

Abstract

The utility model discloses a leakproof oil filter convenient to install, and aims to solve the technical problems of automatically filtering impurities in oil of an oil path system, preventing oil leakage and the like. The oil filter convenient to install and capable of preventing leakage comprises a valve body, the valve body is of a three-way pipe fitting structure and comprises a horizontal main pipe and an inclined pipe, one end of the horizontal main pipe is an oil inlet, the other end of the horizontal main pipe is an oil outlet, the pipe wall of the horizontal main pipe is provided with a notch communicated with one end of the inclined pipe, and the other end of the inclined pipe is in threaded connection with a valve cap. An annular filter screen mounting ring is arranged at the notch, and the filter screen mounting ring and the valve body are integrally formed; an annular filter screen arranged in the inclined pipe is installed between the filter screen installation ring and the valve bonnet, and the outer side of the annular filter screen is communicated with the oil outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of oil automatic filtration, and particularly relates to an oil filter which is convenient to install and leak-proof. Background Art

[0002] At present, the oil filter of a refrigeration compressor unit is used to filter the circulating oil by the circulating oil pump of the unit, so as to ensure the removal of impurities in the oil and reduce the damage to the unit. When the current oil filter of the refrigeration compressor unit is installed with the oil return pipe, multiple bolt connections are required, which makes the disassembly and assembly more troublesome and the efficiency lower. At the same time, after the current oil filter is installed, it is easy to become loose after long-term use, resulting in liquid leakage, which in turn causes problems with the oil return of the device and reduces the use efficiency. How to improve the installation convenience and sealing performance of the oil filter is the object of research by those skilled in the art. Content of the Utility Model

[0003] The purpose of the utility model is to provide an oil filter with good sealing performance, small pressure loss of the oil path passing through the oil filter, self-priming performance, and convenient installation and leak-proofness in view of the defects and deficiencies of the prior art.

[0004] To achieve the above purpose, the utility model provides an oil filter which is convenient to install and leak-proof, including a valve body. The valve body is a three-way pipe fitting structure including a horizontal main pipe and an inclined pipe. One end of the horizontal main pipe is an oil inlet, and the other end is an oil outlet. A cut is provided on the wall of the horizontal main pipe to communicate with one end of the inclined pipe. The other end of the inclined pipe is threadedly connected with a valve cap. An annular filter screen installation ring is provided at the cut, and the filter screen installation ring is integrally formed with the valve body; an annular filter screen arranged inside the inclined pipe is installed between the filter screen installation ring and the valve cap, and the outside of the annular filter screen communicates with the oil outlet. This kind of oil filter uses a three-way pipe fitting structure as the main structure of the valve body. One end of the horizontal main pipe is for oil inlet, and the other end is for oil outlet. The inclined pipe with an annular filter screen installed in the middle is used as the filtering element. Not only is the installation and replacement of the annular filter screen convenient, but also the inclined pipe structure changes the flow direction of the oil in the valve body, improves the fluidity of the oil, and increases the filtering effect.

[0005] The oil inlet is welded to the oil inlet pipe through a solder ring; the oil outlet is welded to the oil outlet pipe through a solder ring; the outside of the annular filter screen communicates with the oil outlet through an oil outlet cut inside the valve body; the inner diameter of the oil inlet is the same as the inner diameter of the oil outlet, and the diameter of the cut is larger than both the inner diameter of the oil inlet and the diameter of the oil outlet cut. The diameter of the cut being larger than the inner diameter of the oil inlet allows the oil to enter the larger-diameter cut and the annular filter screen from the smaller-diameter oil inlet, preventing blockage of the filter screen mesh holes and extending its service life. The diameter of the oil outlet cut is smaller than the diameter of the cut, increasing the oil flow rate and forming a siphon effect, further improving the filtering effect of the annular filter screen.

[0006] The bottom of the valve body is provided with an integral connecting column, and a threaded hole is arranged inside the connecting column, which is convenient for the installation of the valve body.

[0007] The valve cap is provided with an integral valve cap pipe and a valve cover. The outer side of the valve cap pipe is provided with an external thread to connect the inner wall of the inclined pipe, and the valve cover is hermetically connected to the inclined pipe through a sealing ring. During the process of connecting the external thread of the valve cap pipe to the inner wall of the inclined pipe, the inclined pipe is sealed while pressing down the annular filter net. One end of the annular filter net is sleeved inside the valve cap pipe, and the other end of the annular filter net is provided with an enlarged annular mounting seat. A first sealing ring is embedded and installed inside the annular mounting seat, and the first sealing ring presses against the filter net mounting ring to further improve the sealing effect inside the valve body.

[0008] Adopting the above technical solution, the beneficial effects of the present utility model are as follows: The three-way pipe fitting structure is used as the main structure of the valve body. One end of the horizontal main pipe is for oil inlet, and the other end is for oil outlet. The inclined pipe with an annular filter net installed in the middle is used as the filtering element. Not only is the installation and replacement of the annular filter net convenient, but also the valve cover is hermetically connected to the inclined pipe through a sealing ring, and the first sealing ring presses against the filter net mounting ring to further improve the sealing effect inside the valve body and prevent oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0010] Figure 1 is a three-dimensional structural schematic diagram of an oil filter with convenient installation and leakage prevention according to the present utility model;

[0011] Figure 2 is a top-view structural schematic diagram of an oil filter with convenient installation and leakage prevention according to the present utility model;

[0012] Figure 3 is Figure 2 a cross-sectional structural schematic diagram taken along line A-A in

[0013] Figure 4 is a three-dimensional structural schematic diagram of the valve body in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] As Figures 1-4As shown in the figure, an oil filter that is easy to install and leak-proof includes a valve body 2. The valve body 2 is a three-way pipe fitting structure including a horizontal main pipe 7 and an inclined pipe 6. One end of the horizontal main pipe 7 is an oil inlet 10, and the other end is an oil outlet 11. A cut 13 is provided on the wall of the horizontal main pipe 7 to communicate with one end of the inclined pipe 6. The other end of the inclined pipe 6 is threadedly connected to a valve cap 5. An annular filter screen mounting ring 14 is provided at the cut 13, and the filter screen mounting ring 14 is integrally formed with the valve body 2. An annular filter screen 19 provided inside the inclined pipe 6 is installed between the filter screen mounting ring 14 and the valve cap 5. The outside of the annular filter screen 19 communicates with the oil outlet 11. For this kind of oil filter, oil enters from the oil inlet 10, then reaches the cut 13, is filtered by the annular filter screen 19, and flows out from the oil outlet cut 8 to reach the oil outlet 11, completing the oil filtering function.

[0016] As a structural preference, the oil inlet 10 is welded to the oil inlet pipe 1 through a solder ring. The oil outlet 11 is welded to the oil outlet pipe 4 through a solder ring. The outside of the annular filter screen 19 communicates with the oil outlet 11 through an oil outlet cut 8 inside the valve body 2. The inner diameter of the oil inlet 10 is the same as the inner diameter of the oil outlet 11. The diameter of the cut 13 is larger than both the inner diameter of the oil inlet 10 and the diameter of the oil outlet cut 8. The diameter of the cut being larger than the inner diameter of the oil inlet allows oil to enter the larger-diameter cut and the annular filter screen from the smaller-diameter oil inlet, preventing blockage of the filter screen pores and extending its service life. The diameter of the oil outlet cut being smaller than the diameter of the cut increases the oil flow rate and forms a siphon effect, further improving the filtering effect of the annular filter screen.

[0017] To further improve the connection performance of the valve body, an integral connection post 3 is provided at the bottom of the valve body 2, and a threaded hole is provided inside the connection post 3.

[0018] As a structural preference, the valve cap 5 is provided with an integral valve cap pipe 12 and a valve cover. The outside of the valve cap pipe 12 is provided with an external thread to connect to the inner wall of the inclined pipe 6. The valve cover is hermetically connected to the inclined pipe 6 through a sealing ring 16. One end of the annular filter screen 19 is sleeved inside the valve cap pipe 12. The other end of the annular filter screen 19 is provided with an enlarged annular mounting seat 17. A first sealing ring 18 is embedded and installed inside the annular mounting seat 17, and the first sealing ring 18 presses against the filter screen mounting ring 14 to improve the sealing performance inside the valve body and prevent oil leakage.

[0019] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil filter that is easy to install and leak-proof, comprising a valve body (2), the valve body (2) being a three-way pipe structure comprising a horizontal main pipe (7) and an inclined pipe (6), one end of the horizontal main pipe (7) being an oil inlet (10) and the other end being an oil outlet (11), characterized in that: The wall of the horizontal main pipe (7) is provided with a notch (13) connected to one end of the inclined pipe (6), and the other end of the inclined pipe (6) is threadedly connected to the valve cap (5). An annular filter screen mounting ring (14) is provided at the notch (13), and the filter screen mounting ring (14) and the valve body (2) are integrally formed. An annular filter screen (19) is installed inside the inclined pipe (6) between the filter screen mounting ring (14) and the valve cap (5), and the outer side of the annular filter screen (19) is connected to the oil outlet (11).

2. The oil filter that is easy to install and leak-proof according to claim 1, characterized in that: The oil inlet (10) is welded to the oil inlet pipe (1) through a solder ring; the oil outlet (11) is welded to the oil outlet pipe (4) through a solder ring; the outer side of the annular filter (19) is connected to the oil outlet (11) through an oil outlet cutout (8) inside the valve body (2); the inner diameter of the oil inlet (10) is the same as the inner diameter of the oil outlet (11), and the diameter of the cutout (13) is larger than both the inner diameter of the oil inlet (10) and the diameter of the oil outlet cutout (8).

3. The oil filter that is easy to install and leak-proof according to claim 1, characterized in that: An integral connecting column (3) is provided at the bottom of the valve body (2), and a threaded hole is provided in the connecting column (3).

4. The oil filter that is easy to install and leak-proof according to claim 1, characterized in that: The valve bonnet (5) is provided with an integrated valve bonnet tube (12) and a valve cover. The outer side of the valve bonnet tube (12) is provided with an external thread connected to the inner wall of the inclined tube (6). The valve cover is sealed and connected to the inclined tube (6) via a sealing ring (16).

5. The oil filter that is easy to install and leak-proof according to claim 4, characterized in that: One end of the annular filter screen (19) is sleeved on the inner side of the valve cap tube (12); the other end of the annular filter screen (19) is provided with an annular mounting seat (17) with an enlarged diameter; a first sealing ring (18) is embedded and mounted in the annular mounting seat (17); the first sealing ring (18) is crimped onto the filter screen mounting ring (14).

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