Oil feeding and filtering tool

By designing oil-filtering tooling for a variety of filter materials combinations and inflatable components, the problem of low efficiency of traditional oil-filter filters is solved, efficient lubricant filtration and real-time quality monitoring are achieved, and the oil-filtering cycle and shipbuilding cycle are significantly shortened.

CN119158327APending Publication Date: 2024-12-20JIANGNAN SHIPYARD (GRP) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202410897774.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-07-05
Publication Date
2024-12-20

AI Technical Summary

Technical Problem

Traditional oil feeding filters are difficult to meet modern construction needs in terms of filtration effect and cleaning efficiency. The filter paper is prone to damage, the oil discharge time is long and the efficiency is low.

Method used

An oil feeding filtration tool is designed, including a shell, a filter mechanism, an inflatable assembly and a measurement component. It is used in combination with a variety of filter materials (filter paper, filter element, filter bag), and the inflatable assembly is used to shorten the oil discharge time and measure the component in real time. Monitor the quality of lubricating oil.

Benefits of technology

The quality and efficiency of oil injection are improved, the oil injection cycle is shortened, the working costs are reduced, and the construction efficiency is improved through real-time inspection, and the oil injection cycle is shortened by half, which helps to shorten the shipbuilding cycle.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119158327A_ABST
    Figure CN119158327A_ABST
Patent Text Reader

Abstract

The invention provides an oil feeding and filtering tool which comprises a shell, an oil inlet pipe, an oil outlet pipe, an oil inlet pipe, an oil outlet pipe, an oil inlet pipe and an oil outlet pipe, wherein the shell is internally provided with a containing cavity; the end cover covers the accommodating cavity; the filtering mechanism is arranged in the containing cavity and divides the containing cavity into a first cavity and a second cavity, the oil inlet pipe and the oil outlet pipe are located in the first cavity and the second cavity respectively, and the filtering mechanism is used for filtering lubricating oil; the inflation assembly is arranged on the end cover and used for inflating the containing cavity so as to discharge the lubricating oil out of the oil outlet pipe. And the measuring assembly is arranged on the outer side of the shell and used for measuring the quality of the lubricating oil. The tool can improve the pipeline flushing efficiency and shorten the construction period.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the field of shipbuilding, and in particular to an oil casting and filtering tool. Background Art

[0002] The current shipbuilding industry is developing rapidly. The tonnage of ships being built is getting larger and larger, the main engines are becoming larger, and the main lubricating oil pipelines are also increasing accordingly. The oiling work of the main engine lubricating oil is also increasing in difficulty. For example, temporary filters used to use a single filter paper filtering form. The filter paper is easily damaged during the oiling process, and the filtering effect is relatively general. In addition, the filter takes a long time to drain the oil during the cleaning process, and the oil drainage efficiency is low. The traditional temporary oiling filter can no longer meet the current construction requirements and efficiency in terms of efficiency or convenience of use. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the related art, an object of the present invention is to provide an oil filtering tool.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides an oil filtering tool including: a shell, a accommodating chamber is provided inside the shell, and an oil inlet pipe and an oil outlet pipe connected to the accommodating chamber are provided on the side of the shell; an end cover is provided on the accommodating chamber; a filtering mechanism is provided in the accommodating chamber and divides the accommodating chamber into a first chamber and a second chamber, the oil inlet pipe and the oil outlet pipe are respectively located in the first chamber and the second chamber, and the filtering mechanism is used to filter the lubricating oil; an inflation component is provided on the end cover, and is used to inflate the accommodating chamber to discharge the lubricating oil out of the oil outlet pipe; a measuring component is provided on the outside of the shell, and the measuring component is used to measure the quality of the lubricating oil.

[0005] Optionally, the filter mechanism includes a filter basket and a filter assembly, the filter basket is arranged in the accommodating cavity and the side wall of the filter basket is spaced apart from the inner wall of the shell, the filter assembly is arranged in the filter basket, and the two sides of the filter assembly are the first chamber and the second chamber respectively.

[0006] Optionally, a supporting ring is provided on the inner wall of the shell, and a convex ring abutting against the supporting ring is provided on the outer wall of the filter basket, and the supporting ring and the convex ring are detachably connected.

[0007] Optionally, the filtering mechanism further comprises a sealing ring, wherein the sealing ring is arranged between the supporting ring and the convex ring.

[0008] Optionally, the filter assembly includes a filter bag and a pressing piece, the filter bag is arranged in the filter basket, and the pressing piece presses the mouth of the filter bag against the filter basket.

[0009] Optionally, the filter assembly includes a carrier and a plurality of filter elements disposed on the carrier, the carrier is mounted on the mouth of the filter basket, and the plurality of filter elements are located in the filter basket.

[0010] Optionally, the filter assembly includes filter paper and a pressing piece, the filter paper ring is arranged on the inner wall of the filter basket, and the pressing piece is arranged in the filter basket and presses the filter paper against the inner wall of the filter basket.

[0011] Optionally, a connecting hole is provided on the end cover, and the inflation assembly includes an air inlet pipe and a filter element, the air inlet pipe is connected to the air inlet end of the filter element, and the air outlet end of the filter element is connected to the connecting hole.

[0012] Optionally, a discharge valve is provided on the bottom side of the shell, and the discharge valve discharges the lubricating oil in the accommodating cavity.

[0013] Optionally, the measuring component includes a box body and a measuring piece, the box body is connected to the outside of the shell, the measuring piece is arranged in the box body, the measuring end of the measuring piece is arranged in the shell to measure the lubricating oil, or the measuring piece is connected to the shell through a connecting pipe so that the lubricating oil enters the measuring piece through the connecting pipe for measurement.

[0014] As described above, the oiling and filtering tooling of the present invention has the following beneficial effects: the oiling and filtering tooling is reasonably designed, simple to operate, and reusable, and the oil discharge time is shortened by means of compressed air; by combining the filter paper filtering form, the filter element filtering form, and the filter bag filtering form, the quality of the oiling is improved and the oiling cycle is shortened; the application of the measuring component can timely understand the viscosity and grade of the lubricating oil, control the quality of the oiling, and facilitate the construction personnel. The application of the above-mentioned tooling can shorten the oiling cycle by half compared with the original traditional method, which is also conducive to shortening the shipbuilding cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an oil-feeding and filtering tooling in an embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram showing the internal structure of the oil filtering tooling in an embodiment of the present invention.

[0017] Figure 3 Shown is an exploded schematic diagram of a filter bag and a filter basket in an embodiment of the present invention.

[0018] Figure 4 Shown is a schematic diagram of a carrier and a filter element in an embodiment of the present invention.

[0019] Figure 5 Shown is a front view schematic diagram of the pressing member in an embodiment of the present invention.

[0020] Figure 6 Shown is a schematic top view of a pressing member in an embodiment of the present invention.

[0021] Component number description

[0022] 10 Housing

[0023] 11 Oil inlet pipe

[0024] 12 Oil outlet pipe

[0025] 13. First Chamber

[0026] 14 Second Chamber

[0027] 15 Support ring

[0028] 16 First threaded pipe

[0029] 17 Second threaded tube

[0030] 18 Third threaded pipe

[0031] 20 End cap

[0032] 30 Filter basket

[0033] 31 raised ring

[0034] 40 filter bags

[0035] 41 Clamping piece

[0036] 42 bearing parts

[0037] 43 Filter element

[0038] 44 Main rod

[0039] 45 Auxiliary rod

[0040] 46 Pressure plate

[0041] 50 Intake pipe

[0042] 51 Filters

[0043] 52 Breathing valve

[0044] 60 Relief valve

[0045] 70 Cabinet

[0046] 71 Viscometer

[0047] 72 Particle Size Measuring Instrument

[0048] 80 Stop valve

[0049] 90 Oil inlet hose

[0050] 91 Oil outlet hose DETAILED DESCRIPTION

[0051] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0052] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic view is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0053] For ease of description, spatial relational terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or there can be one or more intervening layers. As used herein, "between..." means including the end point values.

[0054] In the context of the present application, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0055] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0056] like Figure 1 and Figure 2 As shown, this embodiment provides an oil-feeding and filtering tool, which is used to clean pipelines. During the operation of a ship engine, lubricating oil is usually delivered to the engine to cool and lubricate the engine. After the oil pipeline is installed, it is necessary to flush the pipeline to prevent impurities in the pipeline from being brought into the engine by the lubricating oil.

[0057] The oil-feeding filter tool comprises a housing 10, an end cover 20, a filtering mechanism, an air filling assembly and a measuring assembly. The housing 10 has an accommodating cavity inside, and the side of the housing 10 has an oil inlet pipe 11 and an oil outlet pipe 12 connected to the accommodating cavity. The end cover 20 is covered in the accommodating cavity.

[0058] The filter mechanism is disposed in the accommodating chamber and divides the accommodating chamber into a first chamber 13 and a second chamber 14. The oil inlet pipe 11 and the oil outlet pipe 12 are respectively located in the first chamber 13 and the second chamber 14. The filter mechanism is used to filter the lubricating oil.

[0059] The inflation assembly is disposed on the end cover 20 and is used to inflate air into the accommodating cavity to discharge the lubricating oil out of the oil outlet pipe 12 .

[0060] The measuring component is arranged outside the housing 10 , and is used to measure the quality of the lubricating oil.

[0061] Specifically, the implementation process of the oil-feeding and filtering tool is as follows: the lubricating oil enters the first chamber 13 of the accommodating chamber from the oil inlet pipe 11, and then the lubricating oil flows into the second chamber 14 after being filtered by the filtering mechanism, and finally the filtered lubricating oil returns to the pipeline from the oil outlet pipe 12. After a period of circulation and filtration, the lubricating oil in the pipeline gradually becomes clean, indicating that the pipeline flushing work is completed. When the residual lubricating oil in the accommodating chamber needs to be discharged after the flushing work is completed, the oil outlet pipe 12 can be removed from the pipeline to discharge the lubricating oil.

[0062] In the traditional method of flushing pipelines, a filter for filtering lubricating oil is connected to the pipeline, and then lubricating oil is added to the pipeline. The lubricating oil brings impurities in the pipeline into the filter for filtration, thereby achieving the purpose of flushing the pipeline. After a period of flushing, the operator will sample the lubricating oil and send the sample to the test room, and then decide whether to continue flushing based on the test results. Therefore, the detection process is time-consuming and labor-intensive, and the work efficiency is low. In addition, when the flushing work of the pipeline is completed, the lubricating oil in the filter needs to be released. The traditional method relies on the lubricating oil to automatically flow out of the filter, so the oil discharge efficiency is low.

[0063] The oil-feeding filter tool of this embodiment is provided with an air-filling component. When the lubricating oil inside the oil-feeding filter tool needs to be discharged, the air-filling component is used to inflate the accommodating cavity, so that the air presses the lubricating oil out of the accommodating cavity, thereby improving the oil discharge efficiency. Since the oil-feeding filter tool of this embodiment is provided with a measuring component, after a period of flushing, the tester can use the measuring component to directly perform on-site testing and decide whether to continue flushing the pipeline, thereby saving testing time and improving testing efficiency.

[0064] like Figure 2As shown, the filter mechanism includes a filter basket 30 and a filter assembly. The filter basket 30 is arranged in the accommodating cavity and the side wall of the filter basket 30 is spaced apart from the inner wall of the shell 10. The filter assembly is arranged in the filter basket 30, and the two sides of the filter assembly are respectively a first chamber 13 and a second chamber 14.

[0065] Specifically, the filter basket 30 is detachably mounted in the accommodating chamber, the interior of the filter basket 30 is used to accommodate the filter assembly, the side wall of the filter basket 30 is provided with a through hole, the filter assembly divides the accommodating chamber into a first chamber 13 and a second chamber 14, and the upper and lower sides of the filter assembly are the first chamber 13 and the second chamber 14 respectively. When the lubricating oil flows through the first chamber 13 and enters the filter assembly, the filter assembly filters the lubricating oil, and the filtered lubricating oil enters the second chamber 14 through the through hole of the filter basket 30 and flows out from the oil outlet pipe 12. Among them, the filter basket 30 plays a supporting role for the filter assembly.

[0066] The inner wall of the housing 10 is provided with a supporting ring 15, and the outer wall of the filter basket 30 is provided with a convex ring 31 that abuts against the supporting ring 15, and the supporting ring 15 and the convex ring 31 are detachably connected. The convex ring 31 is convexly arranged on the outer side of the top end of the filter basket 30. When the filter basket 30 is installed in the accommodating chamber, the convex ring 31 is mounted on the supporting ring 15, and the supporting ring 15 plays a supporting role for the filter basket 30. When the convex ring 31 is mounted on the supporting ring 15, the convex ring 31 and the supporting ring 15 are positioned together using a positioning pin.

[0067] In order to prevent unfiltered lubricating oil from flowing into the second chamber 14 from the gap between the convex ring 31 and the support ring 15 , the filtering mechanism further includes a sealing ring, which is arranged between the support ring 15 and the convex ring 31 .

[0068] Specifically, a ring groove is provided on the top surface of the support ring 15, a sealing ring is provided in the ring groove, and a part of the structure protrudes out of the ring groove and abuts against the convex ring 31. Under the action of the sealing ring, unfiltered lubricating oil can be effectively prevented from flowing into the second chamber 14.

[0069] like Figure 3 As shown, the filter assembly includes a filter bag 40 and a pressing member 41 . The filter bag 40 is disposed in the filter basket 30 , and the pressing member 41 presses the mouth of the filter bag 40 against the filter basket 30 .

[0070] Specifically, the filter bag 40 is arranged in the filter basket 30, the mouth of the filter basket 30 is placed on the top surface of the convex ring 31, the pressing piece 41 is pressed on the mouth of the filter bag 40, and then the butterfly bolt is passed through the pressing piece 41, the convex ring 31 and the filter bag 40 for fixing. When flushing the pipeline, the filter bag 40 is installed first, and then the lubricating oil enters the inside of the filter bag 40 through the first chamber 13, and then the lubricating oil flows into the second chamber 14 through the filter bag 40. At this time, the impurities in the pipeline are filtered in the filter bag 40. In order to facilitate the movement of the pressing piece 41, a lifting ring is provided on the pressing piece 41.

[0071] like Figure 2 and Figure 4 As shown, the filter assembly includes a carrier 42 and a plurality of filter elements 43 disposed on the carrier 42 . The carrier 42 is mounted on the mouth of the filter basket 30 , and the plurality of filter elements 43 are located in the filter basket 30 .

[0072] Specifically, the carrier 42 is provided with a plurality of holes, each of which is provided with a filter element 43, and a bolt is connected to the top of the filter element 43, and the filter element 43 is fixed to the carrier 42 by bolts. The carrier 42 is mounted on the convex ring 31 and can be fixed to the convex ring 31 by bolts and positioning pins. At this time, the plurality of filter elements 43 are located inside the filter basket 30. After the lubricating oil has passed through for a period of time, the filter bag 40 is replaced with the filter element 43 to continue flushing the pipeline. When the lubricating oil enters the first chamber 13, it first flows into the filter element 43 for filtration, and the filtered lubricating oil then flows into the second chamber 14. In order to facilitate the movement of the carrier 42, a lifting ring is also provided on the carrier 42.

[0073] like Figure 2 , Figure 5 and Figure 6 As shown, the filter assembly includes filter paper and a pressing member. The filter paper ring is arranged on the inner wall of the filter basket 30 , and the pressing member is arranged in the filter basket 30 and presses the filter paper against the inner wall of the filter basket 30 .

[0074] Specifically, the filter paper is arranged around the inside of the filter basket 30, and then the pressing member is placed inside the filter basket 30, at which time the pressing member presses the filter paper tightly against the inner wall of the filter basket 30. The pressing member includes a main rod 44, a secondary rod 45, and an arc-shaped pressing plate 46. For example, there are three secondary rods 45, which are evenly distributed on the side of the main rod 44, and there are three pressing plates 46, which are respectively connected to the three secondary rods 45. When the pressing member is placed in the filter basket 30, the three pressing plates 46 press the filter paper against the inner wall of the filter basket 30.

[0075] During the flushing process, after the filter element 43 is used to filter the lubricating oil for a period of time, the filter element 43 is replaced with filter paper to continue filtering. In this embodiment, since there are many impurities in the pipeline in the early stage, it is not easy to damage the filter bag 40 when filtering. In the middle stage, the filter element 43 is used for filtering. The good filtering effect of the filter element 43 can improve the filtering effect, but the cost of the filter element 43 is relatively high. In the later stage, since the impurities in the pipeline have been basically filtered out, the choice of using filter paper for filtering can reduce the cost. Therefore, switching to use different filter materials for filtering is conducive to cost saving. In addition, since only one filter paper is used as the filter material in the traditional filtering method, the filter paper is easily damaged during use, resulting in the need for the operator to replace the new filter paper, thereby affecting the flushing cycle; while this embodiment uses a combination of multiple filter materials to filter the lubricating oil, thereby ensuring that the filter paper is not easily damaged during use, which is conducive to saving the working cycle and improving the flushing efficiency.

[0076] like Figure 1 As shown, a connecting hole is provided on the end cover 20, and the inflation assembly includes an air inlet pipe 50 and a filter 51, the air inlet end of the air inlet pipe 50 and the filter 51 are connected, and the air outlet end of the filter 51 is connected to the connecting hole.

[0077] Specifically, the air inlet pipe 50 can be connected to the air pump, the filter 51 can be an air filter, the cover is provided with a breathable valve 52, the breathable valve 52 is connected to the connection hole, and the filter 51 is connected to the connection hole through the breathable valve 52. When the lubricating oil in the accommodating chamber needs to be discharged, the accommodating chamber is ventilated through the air inlet pipe 50 and the filter 51, wherein the filter 51 is used to filter impurities and water in the air to avoid the lubricating oil. Since the filter 51 can prevent moisture in the air from entering the lubricating oil, the lubricating oil can be prevented from emulsifying and other deterioration problems, thereby avoiding affecting the flushing effect of the lubricating oil.

[0078] In order to monitor the pressure during inflation, the end cover 20 is provided with a pressure gauge.

[0079] When the filter bag 40 or the filter element 43 needs to be replaced during the flushing process, in order to conveniently discharge the oil from the accommodating cavity, a discharge valve 60 is provided on the bottom side of the housing 10, and the discharge valve 60 discharges the lubricating oil in the accommodating cavity.

[0080] like Figure 1 As shown, the measuring assembly includes a box body 70 and a measuring piece. The box body 70 is connected to the outside of the shell 10, and the measuring piece is arranged in the box body 70. The measuring end of the measuring piece is arranged in the shell 10 to measure the lubricating oil, or the measuring piece is connected to the shell 10 through a connecting pipe so that the lubricating oil enters the measuring piece through the connecting pipe for measurement.

[0081] Specifically, the housing 70 is fixed to the outer side of the housing 10 by bolts. The measuring parts include a viscometer 71 and a particle size measuring instrument 72, and the particle size measuring instrument 72 and the viscometer 71 are arranged in the housing 70. The side of the oil inlet pipe 11 is connected with a first threaded pipe 16 and a second threaded pipe 17 arranged at intervals, and the side of the oil outlet pipe 12 is connected with a third threaded pipe 18, wherein the second threaded pipe 17 and the third threaded pipe 18 are both connected with a stop valve 80. The measuring end of the viscometer 71 is connected to the first threaded pipe 16 to extend into the lubricating oil, so as to measure the viscosity of the lubricating oil. The stop valves 80 on the second threaded pipe 17 and the third threaded pipe 18 are respectively connected with an oil inlet hose 90 and an oil outlet hose 91, and the oil inlet hose 90 and the oil outlet hose 91 are both connected to the particle size measuring instrument 72, and the oil inlet hose 90 allows the lubricating oil to enter the particle size measuring instrument 72 for measurement, and the oil outlet hose 91 discharges the lubricating oil from the particle size measuring instrument 72 into the pipeline. It should be noted that in the early and middle stages of flushing the pipeline, the oil inlet hose 90 and the oil outlet hose 91 are not connected to the particle size measuring instrument 72. When the filter basket 30 is replaced with filter paper, the stop valve 80 is first opened to allow the lubricating oil to flow out from the oil inlet hose 90 and the oil outlet hose 91 to achieve the purpose of cleaning the oil inlet hose 90 and the oil outlet hose 91, and then the oil inlet hose 90 and the oil outlet hose 91 are connected to the particle size measuring instrument 72.

[0082] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An oil filter tool, characterized in that: The oil-feeding and filtering tool comprises: A housing, wherein a receiving cavity is provided inside the housing, and an oil inlet pipe and an oil outlet pipe communicating with the receiving cavity are provided on the side of the housing; An end cover, which is disposed on the accommodating cavity; A filter mechanism is disposed in the accommodating chamber and divides the accommodating chamber into a first chamber and a second chamber, the oil inlet pipe and the oil outlet pipe are respectively located in the first chamber and the second chamber, and the filter mechanism is used to filter the lubricating oil; An air filling assembly is arranged on the end cover and is used for filling the accommodating cavity with air to discharge the lubricating oil out of the oil outlet pipe; a measuring assembly is arranged on the outside of the shell and is used for measuring the quality of the lubricating oil.

2. The oil filtering tool according to claim 1, characterized in that: The filter mechanism includes a filter basket and a filter assembly. The filter basket is arranged in the accommodating cavity and the side wall of the filter basket is spaced apart from the inner wall of the shell. The filter assembly is arranged in the filter basket. The two sides of the filter assembly are the first chamber and the second chamber respectively.

3. The oil filtering tool according to claim 2 is characterized in that: The inner wall of the shell is provided with a supporting ring, the outer wall of the filter basket is provided with a convex ring abutting against the supporting ring, and the supporting ring and the convex ring are detachably connected.

4. The oil filtering tool according to claim 3 is characterized in that: The filtering mechanism further comprises a sealing ring, and the sealing ring is arranged between the supporting ring and the convex ring.

5. The oil filtering tool according to claim 2, characterized in that: The filter assembly comprises a filter bag and a pressing piece. The filter bag is arranged in the filter basket, and the pressing piece presses the mouth of the filter bag against the filter basket.

6. The oil filtering tool according to claim 2, characterized in that: The filter assembly includes a carrier and a plurality of filter elements arranged on the carrier. The carrier is mounted on the mouth of the filter basket, and the plurality of filter elements are located in the filter basket.

7. The oil filtering tool according to claim 2, characterized in that: The filter assembly comprises filter paper and a pressing piece. The filter paper ring is arranged on the inner wall of the filter basket. The pressing piece is arranged in the filter basket and presses the filter paper against the inner wall of the filter basket.

8. The oil filtering tool according to claim 1, characterized in that: The end cover is provided with a connecting hole, and the inflation assembly comprises an air inlet pipe and a filter element. The air inlet pipe is connected to the air inlet end of the filter element, and the air outlet end of the filter element is connected to the connecting hole.

9. The oil filtering tool according to claim 1, characterized in that: A discharge valve is provided on the bottom side of the shell, and the discharge valve discharges the lubricating oil in the accommodating chamber.

10. The oil-feeding and filtering tool according to claim 1, characterized in that: The measuring assembly includes a box body and a measuring piece, the box body is connected to the outside of the shell, the measuring piece is arranged in the box body, the measuring end of the measuring piece is arranged in the shell to measure the lubricating oil, or the measuring piece is connected to the shell through a connecting pipe so that the lubricating oil enters the measuring piece through the connecting pipe for measurement.