Oil flushing cleaning device of engine lubricating system and using method of oil flushing cleaning device

Abstract

The invention provides an oil flushing and cleaning device of an engine lubricating system and a using method thereof.The oil flushing and cleaning device comprises an oil conveying pipeline (1), a heater (2), a pressure pump (3) and a filter (4), and the oil conveying pipeline (1) can be connected to the engine lubricating system to form a circulation pipeline; the heater (2), the pressure pump (3) and the filter (4) are sequentially arranged on the oil conveying pipeline (1) in the flowing direction of lubricating oil. According to the technical scheme, residual metal particles, scrap iron and other dirt of the lubricating system are washed and filtered before a predelivery test, so that the cleanliness of the engine lubricating system is improved, the abrasion probability of each friction pair is reduced, and the service life of the engine lubricating system is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of engines, and in particular, to an oil flushing and cleaning device for an engine lubrication system, and also relates to a method for using an oil flushing and cleaning device for an engine lubrication system. Background Art

[0002] The 190 series large-bore engines are mainly used in three major series of products, namely multi-fuel, land-based machines, marine engines, and gas engines applicable to multiple fields, with a power coverage of 30 - 2400 Kw. In recent years, diesel engines and gas engines with cylinder bores of 140, 175, and 260, as well as diesel engines and heavy oil engines with cylinder bores of 270 and 320, have formed a new pattern of multiple series of engines coexisting, including 140 medium-bore high-speed, 175, 190 large-bore medium-high-speed, 260, 270, and 320 large-bore medium-speed engines, with a power coverage of 30 - 6300 Kw. They have the characteristics of high efficiency, low emissions, greenness, and environmental protection, and can meet the power requirements of ocean-going marine main engines / auxiliary engines, medium and large internal combustion engine industrial power stations, industrial machinery drives, long-distance pipelines, underground gas storage tanks, etc.

[0003] However, during the operation of various engines, each friction pair such as the main bearing shell, connecting rod bearing shell, connecting rod bushing, and camshaft bushing is affected by the centrifugal force of the rotating mass, and each friction pair suffers severe wear. Therefore, ensuring clean lubrication conditions directly affects the working reliability, service life, and manufacturing cost of the engine.

[0004] To ensure the working reliability of the engine, it is necessary to ensure good clean lubrication conditions. The traditional engine cleanliness mainly relies on measures such as cleaning each assembled component before installation and dust-free management in the installation workshop. Although the installation and cleaning processes are very careful, there will still be dirt particles and the like remaining in the pipeline, which makes it difficult to ensure the cleanliness of the lubrication system during the operation of the machine, ultimately resulting in abnormal wear of the engine friction pair. For the cleanliness detection of the whole machine, generally, after the engine is tested, a sample is disassembled for inspection, iron filings and other substances in the engine lubrication system are extracted and weighed, and the cleanliness is judged according to the weight of the impurities according to the standard. However, the reliability, service life, and manufacturing cost of the machine are difficult to guarantee. Summary of the Invention

[0005] One technical problem to be solved by the present disclosure is that it is difficult to meet the cleanliness standard of the engine lubrication system.

[0006] To solve the above technical problem, an embodiment of the present disclosure provides an oil flushing and cleaning device for an engine lubrication system, which is characterized by including an oil delivery pipeline, a heater, a pressure pump, and a filter. The oil delivery pipeline can be connected to the engine lubrication system to form a circulation pipeline, and the heater, the pressure pump, and the filter are sequentially arranged on the oil delivery pipeline along the lubricating oil flow direction.

[0007] In some embodiments, quick - change joints are respectively arranged at the inlet end and the outlet end of the oil pipeline.

[0008] In some embodiments, it further includes a first valve arranged at the inlet position of the oil pipeline and a second valve arranged at the outlet position of the oil pipeline.

[0009] In some embodiments, it further includes a first pipeline connecting the inlet position and the outlet position of the oil pipeline. The first end of the first pipeline is connected between the first valve and the heater, the second end of the first pipeline is connected between the second valve and the filter, and a third valve is arranged on the first pipeline.

[0010] In some embodiments, it further includes a fourth valve arranged upstream of the filter and a fifth valve arranged downstream of the filter. The fifth valve is located upstream of the connection point between the first pipeline and the oil pipeline.

[0011] In some embodiments, it further includes a second pipeline. The first end of the second pipeline is connected to the part of the oil pipeline between the pressure pump and the fourth valve, the second end of the second pipeline is connected to the part of the first pipeline downstream of the third valve, and a sixth valve is arranged on the second pipeline.

[0012] In some embodiments, temperature transmitters are respectively arranged on the parts of the oil pipeline upstream and downstream of the heater, and pressure transmitters are respectively arranged on the parts of the oil pipeline upstream and downstream of the pressure pump.

[0013] In some embodiments, it further includes an electrical control component, and the electrical control component is communicatively connected to the pressure pump, the heater, the pressure transmitter, and the temperature transmitter.

[0014] In some embodiments, a first ball valve is bypassed on the oil pipeline connected to the inlet of the heater, and a second ball valve is bypassed on the oil pipeline connected to the outlet of the heater.

[0015] In some embodiments, the filter includes a housing, a filter screen, a filter bag, and a magnetic rod arranged in the housing.

[0016] In some embodiments, it further includes an oil - receiving tray arranged at the bottom.

[0017] On the other hand, this solution also provides a usage method of an oil - flushing and cleaning device for an engine lubrication system, which includes:

[0018] Connect the flushing and cleaning device of the engine lubrication system described in the above solution to the engine lubrication system and conduct an inspection. Among them, the first valve, the second valve, the third valve, and the sixth valve are in the open state, and the fourth valve and the fifth valve are in the closed state;

[0019] Start the pressure pump, gradually close the third valve, turn on the heater, open the fifth valve and the fourth valve in sequence, then close the sixth valve, and open the air release valve of the filter;

[0020] After a predetermined time, turn off the heater and the pressure pump.

[0021] Through the above technical solution, before the factory test, the metal particles, iron filings and other dirt remaining in the lubrication system are flushed and filtered, improving the cleanliness of the engine lubrication system, reducing the wear probability of each friction pair, and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a schematic structural diagram of the flushing and cleaning device of the engine lubrication system disclosed in the embodiments of the present disclosure;

[0024] Figure 2 is a schematic flow diagram of the flushing and cleaning device of the engine lubrication system disclosed in the embodiments of the present disclosure.

[0025] Description of the reference numerals:

[0026] 1 Oil pipeline 2 Heater

[0027] 3 Pressure pump 4 Filter

[0028] 5 First valve 6 Second valve

[0029] 7 Third valve 8 Fourth valve

[0030] 9 Fifth valve 10 Sixth valve

[0031] 11 Pressure transmitter 12 Temperature transmitter

[0032] 13 First pipeline 14 Second pipeline

[0033] 15 Electrical control component 16 First ball valve

[0034] 17th Second Ball Valve Specific Embodiment

[0035] The following further describes the embodiments of the present disclosure in detail in conjunction with the accompanying drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0036] These embodiments of the present disclosure are provided to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0037] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure 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 thus cannot be construed as a limitation of the present disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0039] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0040] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0041] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0042] Example 1

[0043] This solution provides an oil flushing and cleaning device for an engine lubrication system, which includes an oil delivery pipeline 1, a heater 2, a pressure pump 3, and a filter 4. The oil delivery pipeline 1 can be connected to the engine lubrication system to form a circulation pipeline. The heater 2, the pressure pump 3, and the filter 4 are sequentially arranged on the oil delivery pipeline 1 along the lubricating oil flow direction.

[0044] Both ends of the oil delivery pipeline 1 can be connected to the engine lubrication system to form a circulation pipeline for circulating the lubricating oil in the engine lubrication system. Specifically, the inlet end of the oil delivery pipeline 1 can be connected to the engine oil sump outlet, and the outlet end of the oil delivery pipeline 1 is connected to the engine lubricating oil inlet.

[0045] The heater 2 is connected in the oil delivery pipeline 1 and is used to preheat the lubricating oil to prevent the cold lubricating oil from having a high pressure and damaging the filter bag in the filter, thereby reducing the filtering effect. In addition, it can also control the temperature of the lubricating oil during the oil flushing process, so as to be consistent with the temperature during the engine operation. The parameters of the heater 2 can be: rated voltage 380V, rated power 24Kw.

[0046] The pressure pump 3 is used to extract the lubricating oil in the oil sump and flush the machine lubrication system with the pressurized lubricating oil. Among them, the pressure pump 3 can be a gear oil pump, and the parameter requirements are: flow rate 12m 3 / h, pressure 0.36MPa, suction lift 5m, rotational speed 1440r / min, power 4Kw.

[0047] The filter 4 is used to filter fine dirt particles in the lubricating oil to improve the cleanliness of the lubricating oil.

[0048] Among them, the oil flushing and cleaning device can flush and filter the engine before the test run to remove dirt such as metal particles and iron filings remaining in the lubrication system.

[0049] In this solution, before the factory test, the metal particles, iron filings and other dirt residues in the flushing and filtering lubrication system are removed, which improves the cleanliness of the engine lubrication system, reduces the wear probability of each friction pair, and extends its service life.

[0050] Among them, in some embodiments, quick-release joints are respectively arranged at the inlet end and the outlet end of the oil delivery pipeline 1. Multiple different models of quick-release joints can be configured in the flushing and cleaning device of the engine lubrication system to correspond to different models of engines, so as to facilitate connecting the oil delivery pipeline 1 to different types of engine lubrication systems through different models of quick-release joints.

[0051] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes a first valve 5 arranged at the inlet position of the oil delivery pipeline 1 and a second valve 6 arranged at the outlet position of the oil delivery pipeline 1. The first valve 5 and the second valve 6 can control the on-off of the entire oil delivery pipeline 1. Referring to Figure 1 and Figure 2 as shown, the first valve 5 is located near the inlet, and the second valve 6 is located near the outlet. When both valves are closed, the lubricating oil cannot enter the oil delivery pipeline 1 through the inlet and cannot leave the oil delivery pipeline 1 through the outlet.

[0052] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes a first pipeline 13 connected between the inlet position and the outlet position of the oil delivery pipeline 1. The first end of the first pipeline 13 is connected between the first valve 5 and the heater 2, and the second end of the first pipeline 13 is connected between the second valve 6 and the filter 4. A third valve 7 is arranged on the first pipeline 13. Referring to Figure 2 as shown, the first pipeline 13 bypasses the heater 2, the pressure pump 3 and the filter 4. When the first valve 5, the second valve 6 and the third valve 7 are all opened, the lubricating oil entering the oil delivery pipeline 1 can directly return to the outlet of the oil delivery pipeline 1 through the first pipeline 13. In the flushing preparation stage, the first valve 5, the second valve 6 and the third valve 7 can be opened simultaneously to allow the lubricating oil from the engine to bypass the heater 2, the pressure pump 3 and the filter 4 and return directly to avoid accidents.

[0053] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes a fourth valve 8 disposed upstream of the filter 4 and a fifth valve 9 disposed downstream of the filter 4. The fifth valve 9 is located upstream of the connection point between the first pipeline 13 and the oil delivery pipeline 1. The fourth valve 8 and the fifth valve 9 can be used to control the on-off of the filter 4. That is, when both the fourth valve 8 and the fifth valve 9 are closed, the lubricating oil cannot enter the filter 4, and when both the fourth valve 8 and the fifth valve 9 are opened, the lubricating oil is allowed to pass through the filter 4 to filter the lubricating oil.

[0054] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes a second pipeline 14. The first end of the second pipeline 14 is connected to a portion of the oil delivery pipeline 1 located between the pressure pump 3 and the fourth valve 8, and the second end of the second pipeline 14 is connected to a portion of the first pipeline 13 located downstream of the third valve 7. A sixth valve 10 is provided on the second pipeline 14. The second pipeline 14 allows the lubricating oil from the pressure pump 3 to bypass the filter 4 and directly return to the outlet of the oil delivery pipeline 1. Specifically, when the sixth valve 10 is opened and the fourth valve 8 and the fifth valve 9 are closed, the lubricating oil passing through the pressure pump 3 cannot enter the filter 4 but enters the second pipeline 14 and returns to the outlet position of the oil delivery pipeline 1. During normal flushing and cleaning, the sixth valve 10 can be closed and the fourth valve 8 and the fifth valve 9 can be opened so that the pressurized lubricating oil from the pressure pump 3 flows through the filter 4 to filter and clean the lubricating oil.

[0055] In addition, in some embodiments, temperature transmitters 12 are respectively provided on portions of the oil delivery pipeline 1 upstream and downstream of the heater 2, and pressure transmitters 11 are respectively provided on portions of the oil delivery pipeline 1 upstream and downstream of the pressure pump 3. That is to say, the temperature transmitter 12 measures the temperature of the lubricating oil before entering the heater 2 and the temperature of the lubricating oil when leaving the heater 2, so as to heat the lubricating oil to the target temperature through the heater 2 to simulate the temperature state during normal operation of the engine; similarly, the pressure transmitter 11 can measure the pressure of the lubricating oil before entering the pressure pump 3 and the pressure after being pressurized by the pressure pump 3, so that the pressure pump 3 pressurizes the lubricating oil to the target pressure, ensuring that the lubricating oil impacts the filter element in the filter 4 with sufficient impact force to ensure the filtering effect.

[0056] Among them, the measurement range of the temperature transmitter is 0 - 100 °C, the accuracy class is 0.5% FS, the power supply is 24VDC, and the signal output is 4 - 20mA. The measurement range of the pressure transmitter is 0 - 1 Mpa, the accuracy class is 0.25%, the power supply is 24VDC, and the output signal is 4 - 20mA.

[0057] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes an electrical control component 15, which is communicatively connected to the pressure pump 3, the heater 2, the pressure transmitter 11, and the temperature transmitter 12. The electrical control component 15 can control the operation of the pressure pump 3 and the heater 2, and can obtain pressure information and temperature information from the pressure transmitter 11 and the temperature transmitter 12, and then control the specific operating parameters of the pressure pump 3 and the heater 2.

[0058] In addition, in some embodiments, a first ball valve 16 is bypassed on the oil delivery pipeline 1 connected to the inlet of the heater 2, and a second ball valve 17 is bypassed on the oil delivery pipeline 1 connected to the outlet of the heater 2. Refer to Figure 1 As shown, the inlet and outlet of the heater 2 are arranged at its top. When the lubricating oil in the heater 2 is at a relatively low liquid level, lubricating oil can be added thereto through the first ball valve 16 at the inlet of the heater 2. When lubricating oil overflows at the second ball valve 17, it indicates that the heater 2 is full of lubricating oil.

[0059] Specifically, in some embodiments, the filter 4 includes a housing, a filter screen, a filter bag, and a magnetic bar arranged in the housing. The filter screen and the filter bag can filter particulate matter in the lubricating oil and can be disassembled, cleaned, and replaced. The magnetic bar can adsorb smaller iron filings to further improve the filtering effect.

[0060] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes an oil pan arranged at the bottom. The oil delivery pipeline 1, the heater 2, the pressure pump 3, the filter 4, the electrical control component 15, etc. are all arranged on the oil pan, so that the overflowing lubricating oil and the lubricating oil brought out by replacing the filter components can fall on the oil pan, avoiding the leakage of lubricating oil to the outside.

[0061] On the other hand, the present solution also provides a usage method of a flushing and cleaning device for an engine lubrication system, including:

[0062] Connect the flushing and cleaning device of the engine lubrication system described in the above solution to the engine lubrication system and conduct an inspection, wherein the first valve 5, the second valve 6, the third valve 7, and the sixth valve 10 are in the open state, and the fourth valve 8 and the fifth valve 9 are in the closed state;

[0063] Turn on the pressure pump 3, gradually close the third valve 7, turn on the heater 2, sequentially open the fifth valve 9 and the fourth valve 8, then close the sixth valve 10, and open the air release valve of the filter 4;

[0064] After a predetermined time, turn off the heater 2 and the pressure pump 3.

[0065] Among them, the first valve 5, the second valve 6, the third valve 7, the fourth valve 8, the fifth valve 9 and the sixth valve 10 can be butterfly valves, and the flow rate can be adjusted by the valve opening.

[0066] Specifically, the operation method of the oil flushing and cleaning device of the engine lubrication system is as follows:

[0067] 1. Inspection work before starting the pressure pump and heater:

[0068] (1) Check that there are no abnormalities in the connections of each pipeline. The outlet and inlet of the oil pipeline are connected to the oil inlet pipe and oil pan drain port of the machine to be flushed.

[0069] (2) Check that the status of each manual valve is correct, the first valve 5, the second valve 6, the third valve 7, and the sixth valve 10 are in the open state, and the fourth valve 8 and the fifth valve 9 are in the closed state.

[0070] (3) Ensure that there is sufficient lubricating oil in heater 2. If there is insufficient lubricating oil, open the two ball valves and add lubricating oil at the first ball valve until lubricating oil overflows from the second ball valve.

[0071] (4) Check filter 4 to ensure that it contains clean filter bags and magnetic bars to ensure that there is no oil leakage.

[0072] 2. Lubricating oil cleaning and heating

[0073] Connect the power supply of the electrical control unit, turn on the pressure pump switch, slowly close the third valve 7 until the oil pressure shows 0.35-0.45Mpar, and turn on the heater 2 switch to automatic after the oil pressure is adjusted. After the outlet oil temperature reaches 45°C (measured by the temperature transmitter), open the fifth valve 9 and the fourth valve 8 in sequence, and close the sixth valve 10. Open the vent valve on the top of the filter 4 to exhaust the internal gas.

[0074] 3. Stop checking

[0075] After flushing the machine for half an hour, turn off the heater 2---pressure pump 3---disconnect the power supply of the electrical control components. Open the filter 4 to check the cleanliness of the magnetic rod and filter bag. If there are a lot of impurities on the magnetic rod, flush it for another half an hour.

[0076] Embodiment 2

[0077] The present invention provides an oil flushing and cleaning device for an engine lubrication system, which includes an oil pipeline 1, a heater 2, a pressure pump 3 and a filter 4. The oil pipeline 1 can be connected to the engine lubrication system to form a circulation pipeline. The heater 2, the pressure pump 3 and the filter 4 are arranged in sequence on the oil pipeline 1 along the flow direction of the lubricating oil.

[0078] Both ends of the oil pipeline 1 can be connected to the engine lubrication system to form a circulating pipeline for circulating the lubricating oil in the engine lubrication system. Specifically, the inlet end of the oil pipeline 1 can be connected to the engine oil sump outlet, and the outlet end of the oil pipeline 1 is connected to the engine lubricating oil inlet.

[0079] The heater 2 is connected in the oil pipeline 1 and is used to preheat the lubricating oil to prevent the cold lubricating oil from having a high pressure and damaging the filter bag in the filter, thereby reducing the filtering effect. In addition, it can also control the temperature of the lubricating oil during the oil filling process, so as to be consistent with the temperature during the engine operation. The parameters of the heater 2 can be: rated voltage 380V, rated power 24Kw.

[0080] The pressure pump 3 is used to extract the lubricating oil from the oil sump and flush the machine lubrication system with the pressurized lubricating oil. Among them, the pressure pump 3 can be a screw pump.

[0081] The filter 4 is used to filter the fine dirt particles in the lubricating oil to improve the cleanliness of the lubricating oil.

[0082] Among them, the oil flushing and cleaning device can flush and filter the engine before the test run to remove dirt such as metal particles and iron filings remaining in the lubrication system.

[0083] In this solution, by flushing and filtering the metal particles, iron filings and other dirt remaining in the lubrication system before the factory test, the cleanliness of the engine lubrication system is improved, the wear probability of each friction pair is reduced, and its service life is extended.

[0084] Among them, in some embodiments, quick-change joints are respectively arranged at the inlet end and the outlet end of the oil pipeline 1. Multiple different models of quick-change joints can be configured in the oil flushing and cleaning device of the engine lubrication system to correspond to different models of engines, so as to facilitate connecting the oil pipeline 1 to different types of engine lubrication systems through different models of quick-change joints.

[0085] In addition, in some embodiments, the oil flushing and cleaning device of the engine lubrication system further includes a first valve 5 arranged at the inlet position of the oil pipeline 1 and a second valve 6 arranged at the outlet position of the oil pipeline 1. The first valve 5 and the second valve 6 can control the on-off of the entire oil pipeline 1. As shown in Figure 1 and Figure 2 shown, the first valve 5 is located near the inlet, and the second valve 6 is located near the outlet. When both valves are closed, the lubricating oil will not be able to enter the oil pipeline 1 through the inlet and will not be able to leave the oil pipeline 1 through the outlet.

[0086] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes a first pipeline 13 connected to the inlet position and the outlet position of the oil pipeline 1. The first end of the first pipeline 13 is connected between the first valve 5 and the heater 2, and the second end of the first pipeline 13 is connected between the second valve 6 and the filter 4. A third valve 7 is provided on the first pipeline 13. Refer to Figure 2 As shown, the first pipeline 13 bypasses the heater 2, the pressure pump 3 and the filter 4. When the first valve 5, the second valve 6 and the third valve 7 are all opened, the lubricating oil entering the oil pipeline 1 can directly return to the outlet of the oil pipeline 1 through the first pipeline 13. During the flushing preparation stage, the first valve 5, the second valve 6 and the third valve 7 can be opened simultaneously to allow the lubricating oil from the engine to bypass the heater 2, the pressure pump 3 and the filter 4 and return directly to avoid accidents.

[0087] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes a fourth valve 8 provided upstream of the filter 4 and a fifth valve 9 provided downstream of the filter 4. The fifth valve 9 is located upstream of the connection point between the first pipeline 13 and the oil pipeline 1. The fourth valve 8 and the fifth valve 9 can be used to control the on-off of the filter 4, that is, when both the fourth valve 8 and the fifth valve 9 are closed, the lubricating oil cannot enter the filter 4, and when both the fourth valve 8 and the fifth valve 9 are opened, the lubricating oil can be allowed to pass through the filter 4 to filter the lubricating oil.

[0088] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes a second pipeline 14. The first end of the second pipeline 14 is connected to a portion of the oil pipeline 1 located between the pressure pump 3 and the fourth valve 8, and the second end of the second pipeline 14 is connected to a portion of the first pipeline 13 located downstream of the third valve 7. A sixth valve 10 is provided on the second pipeline 14. The second pipeline 14 can allow the lubricating oil from the pressure pump 3 to bypass the filter 4 and directly return to the outlet of the oil pipeline 1. Specifically, when the sixth valve 10 is opened and the fourth valve 8 and the fifth valve 9 are closed, the lubricating oil passing through the pressure pump 3 cannot enter the filter 4, but enters the second pipeline 14 and returns to the outlet position of the oil pipeline 1. During normal flushing and cleaning, the sixth valve 10 can be closed and the fourth valve 8 and the fifth valve 9 can be opened so that the pressurized lubricating oil from the pressure pump 3 flows through the filter 4 to filter and clean the lubricating oil.

[0089] In addition, in some embodiments, temperature transmitters 12 are respectively provided at the upstream and downstream portions of the oil pipeline 1 with respect to the heater 2, and pressure transmitters 11 are respectively provided at the upstream and downstream portions of the oil pipeline 1 with respect to the pressure pump 3. That is to say, the temperature transmitter 12 measures the temperature of the lubricating oil before entering the heater 2 and the temperature of the lubricating oil when leaving the heater 2, so as to heat the lubricating oil to the target temperature through the heater 2 to simulate the temperature state during the normal operation of the engine; similarly, the pressure transmitter 11 can measure the pressure of the lubricating oil before entering the pressure pump 3 and the pressure after being pressurized by the pressure pump 3, so that the pressure pump 3 pressurizes the lubricating oil to the target pressure, ensuring that the lubricating oil impacts the filter element in the filter 4 with sufficient impact force to ensure the filtering effect.

[0090] Among them, the measurement range of the temperature transmitter is 0 to 100 °C, the accuracy class is 0.5% FS, the power supply is 24 VDC, and the signal output is 4 - 20 mA. The measurement range of the pressure transmitter is 0 to 1 Mpa, the accuracy class is 0.25%, the power supply is 24 VDC, and the output signal is 4 - 20 mA.

[0091] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes an electrical control component 15, and the electrical control component 15 is communicatively connected to the pressure pump 3, the heater 2, the pressure transmitter 11, and the temperature transmitter 12. The electrical control component 15 can control the operation of the pressure pump 3 and the heater 2, and can obtain pressure information and temperature information from the pressure transmitter 11 and the temperature transmitter 12, and then control the specific operating parameters of the pressure pump 3 and the heater 2.

[0092] In addition, in some embodiments, a first ball valve 16 is connected in parallel to the oil pipeline 1 at the inlet of the heater 2, and a second ball valve 17 is connected in parallel to the oil pipeline 1 at the outlet of the heater 2. Refer to Figure 1 As shown, the inlet and outlet of the heater 2 are provided at its top. When the lubricating oil in the heater 2 is at a relatively low liquid level, lubricating oil can be added through the first ball valve 16 at the inlet of the heater 2. When lubricating oil overflows at the second ball valve 17, it indicates that the heater 2 is full of lubricating oil.

[0093] Specifically, in some embodiments, the filter 4 includes a housing, a filter screen, a filter bag, and a magnetic bar provided in the housing. The filter screen and the filter bag can filter particulate matter in the lubricating oil and can be disassembled, cleaned, and replaced. The magnetic bar can adsorb smaller iron filings to further improve the filtering effect. The filter bag can be a 10 μm filter bag.

[0094] In addition, in some embodiments, the flushing and cleaning device of the engine lubrication system further includes an oil pan disposed at the bottom. The oil delivery pipeline 1, the heater 2, the pressure pump 3, the filter 4, the electrical control component 15, etc. are all disposed on the oil pan, so that the overflowed lubricating oil and the lubricating oil brought out by replacing the filter components can fall on the oil pan, avoiding the leakage of the lubricating oil to the outside.

[0095] On the other hand, the present solution also provides a method for using the flushing and cleaning device of the engine lubrication system, including:

[0096] Connect the flushing and cleaning device of the engine lubrication system described above to the engine lubrication system and conduct an inspection. Among them, the first valve 5, the second valve 6, the third valve 7, and the sixth valve 10 are in the open state, and the fourth valve 8 and the fifth valve 9 are in the closed state;

[0097] Start the pressure pump 3, gradually close the third valve 7, turn on the heater 2, open the fifth valve 9 and the fourth valve 8 in sequence, then close the sixth valve 10, and open the air release valve of the filter 4;

[0098] After a predetermined time, turn off the heater 2 and the pressure pump 3.

[0099] Among them, the first valve 5, the second valve 6, the third valve 7, the fourth valve 8, the fifth valve 9, and the sixth valve 10 can be handle-lined butterfly valves, and the flow rate can be adjusted by the valve opening.

[0100] Specifically, the operation method of the flushing and cleaning device of the engine lubrication system is as follows:

[0101] 1. Inspection work before starting the pressure pump and the heater:

[0102] (1) Check that the connections of each pipeline are normal. The outlet and inlet of the oil delivery pipeline are connected to the oil inlet pipe and the oil sump drain port of the machine to be flushed.

[0103] (2) Check that the states of each manual valve are correct. The first valve 5, the second valve 6, the third valve 7, and the sixth valve 10 are in the open state, and the fourth valve 8 and the fifth valve 9 are in the closed state.

[0104] (3) Ensure that there is sufficient lubricating oil in the heater 2. If the lubricating oil is insufficient, two ball valves can be opened, and lubricating oil can be added at the first ball valve until lubricating oil overflows from the second ball valve.

[0105] (4) Check the filter 4 to ensure that it is equipped with a clean filter bag and magnetic rod and there is no oil leakage.

[0106] 2. Lubricating oil cleaning and heating

[0107] Connect the power supply of the electrical control unit, turn on the pressure pump switch, slowly close the third valve 7 until the oil pressure shows 0.35-0.45Mpar, and turn on the heater 2 switch to automatic after the oil pressure is adjusted. After the outlet oil temperature reaches 45°C (measured by the temperature transmitter), open the fifth valve 9 and the fourth valve 8 in sequence, and close the sixth valve 10. Open the vent valve on the top of the filter 4 to exhaust the internal gas.

[0108] 3. Stop checking

[0109] After flushing the machine for half an hour, turn off the heater 2---pressure pump 3---disconnect the power supply of the electrical control components. Open the filter 4 to check the cleanliness of the magnetic rod and filter bag. If there are a lot of impurities on the magnetic rod, flush it for another half an hour.

[0110] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0111] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. An oil flushing and cleaning device for an engine lubrication system, characterized in that, It includes an oil pipeline (1), a heater (2), a pressure pump (3) and a filter (4). The oil pipeline (1) can be connected to an engine lubrication system to form a circulation pipeline. The heater (2), the pressure pump (3) and the filter (4) are sequentially arranged on the oil pipeline (1) along the lubricating oil flow direction.

2. The oil flushing and cleaning device for an engine lubrication system according to claim 1, characterized in that, Quick connectors are respectively arranged at the inlet end and the outlet end of the oil pipeline (1).

3. The oil flushing and cleaning device for an engine lubrication system according to claim 2, characterized in that, It further includes a first valve (5) arranged at the inlet position of the oil pipeline (1) and a second valve (6) arranged at the outlet position of the oil pipeline (1).

4. The oil flushing and cleaning device for an engine lubrication system according to claim 3, characterized in that, It further includes a first pipeline (13) connected between the inlet position and the outlet position of the oil pipeline (1). The first end of the first pipeline (13) is connected between the first valve (5) and the heater (2), and the second end of the first pipeline (13) is connected between the second valve (6) and the filter (4). A third valve (7) is arranged on the first pipeline (13).

5. The oil flushing and cleaning device for an engine lubrication system according to claim 4, characterized in that, It further includes a fourth valve (8) arranged upstream of the filter (4) and a fifth valve (9) arranged downstream of the filter (4). The fifth valve (9) is located upstream of the connection point between the first pipeline (13) and the oil pipeline (1).

6. The oil flushing and cleaning device for an engine lubrication system according to claim 5, characterized in that, It further includes a second pipeline (14). The first end of the second pipeline (14) is connected to the part of the oil pipeline (1) between the pressure pump (3) and the fourth valve (8), and the second end of the second pipeline (14) is connected to the part of the first pipeline (13) downstream of the third valve (7). A sixth valve (10) is arranged on the second pipeline (14).

7. The oil flushing and cleaning device for an engine lubrication system according to claim 6, characterized in that, Temperature transmitters (12) are respectively arranged on the parts of the oil pipeline (1) upstream and downstream of the heater (2), and pressure transmitters (11) are respectively arranged on the parts of the oil pipeline (1) upstream and downstream of the pressure pump (3).

8. The oil flushing and cleaning device for an engine lubrication system according to claim 7, characterized in that, It further includes an electrical control component (15). The electrical control component (15) is communicatively connected to the pressure pump (3), the heater (2), the pressure transmitter (11) and the temperature transmitter (12).

9. The oil flushing and cleaning device for an engine lubrication system according to claim 8, characterized in that, A first ball valve (16) is bypassed on the oil pipeline (1) connected to the inlet of the heater (2), and a second ball valve (17) is bypassed on the oil pipeline (1) connected to the outlet of the heater (2).

10. The oil flushing and cleaning device for an engine lubrication system according to claim 9, characterized in that, The filter (4) includes a housing, a filter screen, a filter bag and a magnetic rod arranged in the housing.

11. The oil flushing and cleaning device for an engine lubrication system according to claim 10, characterized in that, It further includes an oil pan arranged at the bottom.

12. A method for using an oil flushing and cleaning device for an engine lubrication system, characterized in that, It includes: Connect the flushing and cleaning device of the engine lubrication system according to claim 11 to the engine lubrication system and conduct an inspection. Among them, the first valve (5), the second valve (6), the third valve (7) and the sixth valve (10) are in the open state, and the fourth valve (8) and the fifth valve (9) are in the closed state; Turn on the pressure pump (3), gradually close the third valve (7), turn on the heater (2), open the fifth valve (9) and the fourth valve (8) in sequence, then close the sixth valve (10), and open the air release valve of the filter (4); After a predetermined time, turn off the heater (2) and the pressure pump (3).

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