Pump inlet self-cleaning oil filtering system
By designing a self-cleaning oil filtration system at the pump inlet at the pump inlet, and using the air supply device to adjust the output pressure, the effective self-cleaning function is achieved under no back pressure or negative pressure, the blockage and poor oil supply of oil filters in the prior art are solved, and a more efficient and economical filtration effect is achieved.
Patent Information
- Application Number
- CN202421714127.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-19
AI Technical Summary
When the existing self-clearing high-precision oil filter is used at the pump inlet, the self-clearing function cannot be effectively operated due to insufficient pressure, resulting in impurities blocked and poor oil supply.
A pump inlet self-cleaning oil filtration system is designed, including a first oil filter and a collection filter, and the output pressure is adjusted through the air supply device to achieve an effective self-flushing function without back pressure or even negative pressure.
The system can effectively remove impurities in the oil filter, avoid blockage, ensure the smoothness of oil supply, and reduce the number and cost of filters by adjusting the pressure to adapt to the cleaning requirements of oils of different viscosity.
Smart Images
Figure CN222746165U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of petrochemical industry, in particular to a pump inlet self-cleaning oil filtering system. Background Art
[0002] During the oil production and processing process and the operation of the ship's main engine, the filtered medium contains various particles and impurities. If they are not removed in time, the wear and aging of equipment parts such as pumps and main engines will be accelerated. Therefore, filters are usually added in front of the equipment to filter out impurities in the medium, keep the medium clean, reduce wear on the equipment, and improve the reliability of equipment operation.
[0003] At present, for example, in the fuel system of ships, filters of different precisions are usually placed in three places: before the pump, after the pump, and before the engine after the pump. All three filters are used in one and the other is reserved. The filter before the pump has a lower filtration precision and does not have an automatic cleaning function. It needs to be cleaned manually regularly, and mainly plays the role of protecting the pump. A high-precision filter with automatic cleaning function is placed after the pump to further remove fine impurities. The oil discharged by backwashing is generally discharged into the dirty oil tank, and its utilization rate is low. Finally, the high-precision filter before the main engine is used as a safety filter to protect the main engine. Therefore, the current fuel system usually requires filters to be set in at least three places to complete the function of filtering and protecting the pump and the main engine.
[0004] The reasons why high-precision filters are not used directly in front of the pump are: first, compared with coarse filters, high-precision filters will produce higher pressure drops under the same filtration area, affecting the normal operation of the pump. If the filtration area is increased, the filter volume will also increase, and the installation space requirements are higher. Second, high-precision filters are easy to clog, and at the pump inlet, the oil filter has no back pressure when working, and even has negative pressure. Most of the oil filters with self-cleaning function on the market require that the pressure inside the filter is not less than 2 bar during self-cleaning. Therefore, the oil filter with self-cleaning function is currently set at the pump inlet. The filter is prone to insufficient pressure and cannot effectively perform the cleaning function, resulting in clogging of the inside of the filter by impurities, resulting in poor oil supply.
[0005] Therefore, if a filtration system can effectively self-flush without back pressure or even under negative pressure, and at the same time has a simple structure, a small equipment size, and a large enough filtration area to reduce the filter pressure drop, then the two sets of coarse filters in front of the pump and the high-precision filter with automatic cleaning function in front of the pump can be combined into a high-precision filter in front of the pump; the oil supply system is simplified and the equipment procurement cost is reduced. Utility Model Content
[0006] The purpose of the utility model is to solve the problem that the current self-cleaning high-precision oil filter cannot effectively operate the self-cleaning function due to insufficient pressure during use when it is set at the pump inlet, resulting in clogging of the interior with impurities, resulting in poor oil supply and large pressure drop, and a pump inlet self-cleaning oil filtration system is proposed.
[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0008] A pump inlet self-cleaning oil filtration system includes an oil tank and a main unit, and also includes: at least one first pipeline A, installed between the output end of the oil tank and the input end of the main unit; wherein the first pipeline A is installed with a first oil filter and an oil pump; an air supply device, connected to the input end of the oil tank through at least one second pipeline A; wherein the second pipeline A is connected to the first oil filter, a collection filter is installed on the second pipeline A, and the collection filter is arranged between the oil tank and the first oil filter.
[0009] In order to adjust the backwash cleaning intensity, preferably, the air supply device includes an air compressor and an air storage tank, and the output pressure of the air compressor is greater than or equal to 6 bar.
[0010] In order to ensure that impurities in the fuel are better filtered, preferably, the oil inlet end and the oil outlet end of the first oil filter are in the same straight line, and the opening of the internal filter element of the first oil filter faces its oil inlet.
[0011] In order to ensure the flow stability of the system, further, the first oil filter is a basket filter, and the oil inlet end and the oil outlet end of the first oil filter are in the same straight line.
[0012] In order to control the opening of the first pipeline A, further, valve one and valve two are respectively installed on the first pipeline A, and the valve one and valve two are respectively arranged at the oil inlet end and the oil outlet end of the first oil filter.
[0013] In order to control the opening of the second pipeline A, further, valve three and valve four are respectively installed on the second pipeline A, and the valve three and valve four are respectively arranged at the oil inlet end and the oil outlet end of the first oil filter.
[0014] Compared with the prior art, the utility model provides a pump inlet self-cleaning oil filtering system, which has the following beneficial effects:
[0015] 1. The pump inlet self-cleaning oil filtration system combines the coarse filter before the pump and the self-cleaning fine filter after the pump into the pump inlet self-cleaning oil filtration system, which reduces the number of filters and reduces costs;
[0016] 2. The pump has a self-cleaning oil filtration system at the inlet. The filtered medium is directly returned to the oil tank after being filtered by the collection filter, which improves the fuel utilization rate;
[0017] 3. The pump has a self-cleaning oil filtration system at the inlet. With the same filter volume, it has a larger filtration area, reduces the pressure drop, and has no requirements for working pressure. The filter system can also be cleaned normally under negative pressure at the suction port.
[0018] 4. The pump inlet self-cleaning oil filtration system can effectively flush and clean the impurities inside the first oil filter or the second oil filter by adjusting the output pressure of the air supply device to avoid blockage inside the oil filter, thereby ensuring the smoothness of the oil supply to the main engine. In addition, by adjusting the output pressure of the air supply device, the backwashing cleaning intensity can also be adjusted to meet the cleaning requirements of oils of different viscosities;
[0019] 5. The pump inlet is equipped with a self-cleaning oil filtration system. When the first pipeline A is delivering oil, the second oil filter on the first pipeline B can be cleaned by starting the air supply device. When the first pipeline B is delivering oil, the first oil filter on the first pipeline A can be cleaned by starting the air supply device. By using the first pipeline A and the first pipeline B in turn and keeping them in reserve, the purpose of circulating use is achieved, thereby further improving the use effect of the filtration system.
[0020] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model solves the problem that the current self-cleaning high-precision oil filter cannot effectively operate the self-cleaning function due to insufficient pressure during use when it is set at the pump inlet, resulting in clogging of the interior with impurities, resulting in poor oil supply and large pressure drop. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a structural schematic diagram of a first pipeline A of a pump inlet self-cleaning oil filtering system proposed by the utility model in an oil delivery state;
[0022] Figure 2 This is a structural schematic diagram of a first pipeline B of a pump inlet self-cleaning oil filtering system in an oil delivery state proposed by the utility model;
[0023] Figure 3 This is a structural schematic diagram of a pump inlet self-cleaning oil filtering system proposed by the utility model when the first oil filter is in a cleaned state;
[0024] Figure 4 This is a structural schematic diagram of a pump inlet self-cleaning oil filtering system proposed by the utility model in a cleaned state of the second oil filter;
[0025] Figure 5 This is a schematic diagram of the cutaway structure of a first oil filter of a pump inlet self-cleaning oil filtering system proposed by the utility model;
[0026] Figure 6The utility model discloses a schematic diagram of the cutaway structure of a collection filter of a pump inlet self-cleaning oil filtering system.
[0027] In the figure: 1. oil tank; 2. main engine; 3. first pipeline A; 31. valve one; 32. valve two; 4. oil pump; 5. first oil filter; 61. air supply device; 7. second pipeline A; 71. valve three; 72. valve four; 6. collecting filter; 9. first pipeline B; 91. valve five; 92. valve six; 10. second oil filter; 11. second pipeline B; 111. valve seven; 112. valve eight. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0030] Embodiment 1:
[0031] Reference Figure 1-Figure 6 The embodiment of the utility model provides a pump inlet self-cleaning oil filtering system, including an oil tank 1 and a main unit 2, and also includes: at least one first pipeline A3, fixedly installed between the output end of the oil tank 1 and the input end of the main unit 2 through a flange; wherein, a first oil filter 5 and an oil pump 4 are installed on the first pipeline A3, the oil inlet end of the first oil filter 5 faces the oil tank 1, and the oil outlet end of the first oil filter 5 faces the input end of the oil pump 4; an air supply device 61 is connected to the input end of the oil tank 1 through at least one second pipeline A7; wherein, the second pipeline A7 is connected to the first oil filter 5, when the first oil filter 5 is cleaned, the pressurized gas in the second pipeline A7 enters from the oil outlet end of the first oil filter 5, and is discharged from the oil inlet end of the first oil filter 5, which can take away the impurities filtered in the first oil filter 5, and a collecting filter 6 is installed on the second pipeline A7, and the collecting filter 6 is arranged between the oil tank 1 and the first oil filter 5.
[0032] Specifically, when transporting oil, the oil pump 4 is started to make the fuel flow to the main engine 2, and the impurities in the fuel are filtered through the first oil filter 5. By starting the air supply device 61, the residual fuel in the first pipeline A3 and the impurities filtered in the first oil filter 5 flow to the collecting filter 6, so that the impurities in the first oil filter 5 are removed, and the removed impurities are filtered and collected by the collecting filter 6, and the residual fuel is returned to the fuel tank 1.
[0033] The air supply device 61 includes an air compressor and an air storage tank. The output pressure of the air compressor is adjustable, and the output pressure is greater than or equal to 6 bar.
[0034] The output pressure of the air compressor in the air supply device 61 is set to P1=10bar, the total volume of the second pipeline A7, the second pipeline B11 and the collection filter 6 is V2=100L, the pipeline pressure during the cleaning process is the atmospheric pressure P2=101.33Kpa, the cleaning intensity level is selected as n=2, and it is calculated by the formula P1-P2*V1=n+1*P2*V2 that V1≈33.33L, and the volume of the air storage tank is set to 35L.
[0035] Specifically, when in use, the backwash cleaning intensity can be adjusted by adjusting the output pressure of the air supply device 61 .
[0036] The oil inlet and the oil outlet of the first oil filter 5 are in the same straight line, and the opening of the filter element inside the first oil filter 5 faces the oil inlet.
[0037] Specifically, such a design can ensure that impurities in the fuel are filtered into the filter element of the first oil filter 5 .
[0038] The first oil filter 5 is a basket filter, and the oil inlet end and the oil outlet end of the first oil filter 5 are in the same straight line.
[0039] Specifically, by adopting a basket filter, which has a large filtering area, a low pressure drop can be maintained, thereby ensuring a stable flow rate of the system.
[0040] In actual use, the first oil filter 5 can also adopt a multi-layer nested filter element structure. Between each nested adjacent filter element, one end is fixedly connected and sealed with the adjacent outer filter element, and the other end of the same layer is fixedly connected and sealed with the adjacent inner filter element. The free end of the innermost filter element is completely blocked. The number of nested layers is set according to the requirements of the filtration area and pressure drop. Here, three layers of nested filter elements are used, which can better filter the transported oil.
[0041] The first pipeline A3 is respectively installed with a valve 1 31 and a valve 2 32 , and the valve 1 31 and the valve 2 32 are respectively arranged at the oil inlet end and the oil outlet end of the first oil filter 5 .
[0042] Specifically, by setting the valve 1 31 and the valve 2 32 , the opening of the first pipeline A3 can be controlled.
[0043] The second pipeline A7 is respectively installed with a valve three 71 and a valve four 72, and the valve three 71 and the valve four 72 are respectively arranged at the oil inlet end and the oil outlet end of the first oil filter 5.
[0044] Specifically, by setting the valve three 71 and the valve four 72, the opening of the second pipeline A7 can be controlled.
[0045] Embodiment 2:
[0046] On the basis of the first embodiment, the output end of the oil tank 1 is connected to the first pipeline B9, and the end of the first pipeline B9 away from the oil tank 1 is connected to the input end of the oil pump 4. The second oil filter 10 is fixedly installed on the first pipeline B9. The output end of the air supply device 61 is connected to the collecting filter 6 by a second pipeline B11, and the second pipeline B11 is connected to the second oil filter 10. The first pipeline B9 is respectively installed with a valve five 91 and a valve six 92, and the valve five 91 and the valve six 92 are respectively arranged at the oil inlet end and the oil outlet end of the second oil filter 10. The second pipeline B11 is respectively installed with a valve seven 111 and a valve eight 112, and the valve seven 111 and the valve eight 112 are respectively arranged at the oil inlet end and the oil outlet end of the second oil filter 10.
[0047] Specifically, during oil transportation, impurities in the fuel can be filtered through the second oil filter 10, and the filtered fuel is transported to the main engine 2 through the oil pump 4. During cleaning, the air supply device 61 is started and compressed gas is discharged into the second pipeline B11, so that the residual fuel in the first pipeline B9 and the impurities filtered by the second oil filter 10 flow to the collecting filter 6, and the impurities are filtered and collected by the collecting filter 6, and the residual fuel is returned to the fuel tank 1.
[0048] Working process of embodiment 1:
[0049] When delivering oil, firstly open valve 1 31 and valve 2 32 to allow the fuel in the fuel tank 1 to flow into the first pipeline A3, start the oil pump 4 to allow the fuel to flow to the main engine 2, and filter the impurities in the fuel through the first oil filter 5. The filtered fuel is delivered to the main engine 2 through the oil pump 4;
[0050] During cleaning, valve one 31 and valve two 32 can be closed, and valve three 71 and valve four 72 can be opened. Then, the output pressure of the air supply device 61 is set according to the viscosity of the fuel type. Then, the air supply device 61 is started and the compressed gas is discharged into the second pipeline A7. The compressed gas passes through the second pipeline A7 and enters from the oil outlet end of the first oil filter 5 and is discharged from the oil inlet end, so that the residual fuel in the first pipeline A3 and the impurities filtered in the first oil filter 5 flow to the collecting filter 6, so that the impurities in the first oil filter 5 can be removed, and the removed impurities are filtered and collected by the collecting filter 6, and the residual fuel is returned to the fuel tank 1.
[0051] Working process of embodiment 2:
[0052] When delivering oil, first open valve five 91 and valve six 92 to allow the fuel in the fuel tank 1 to flow into the first pipeline B9, start the oil pump 4 to allow the fuel to flow to the main engine 2, and filter the impurities in the fuel through the second oil filter 10. The filtered fuel is delivered to the main engine 2 through the oil pump 4;
[0053] During cleaning, valve five 91 and valve six 92 can be closed, and valve seven 111 and valve eight 112 can be opened. Then, the output pressure of the air supply device 61 is set according to the viscosity of the fuel type. Then, the air supply device 61 is started and the compressed gas is discharged into the second pipeline B11. The compressed gas passes through the second pipeline B11 and enters from the oil outlet end of the second oil filter 10, and is discharged from the oil inlet end, so that the residual fuel in the first pipeline B9 and the impurities filtered in the second oil filter 10 flow to the collecting filter 6, thereby removing the impurities in the second oil filter 10, and the removed impurities are filtered and collected by the collecting filter 6, and the residual fuel is returned to the fuel tank 1.
[0054] During use, when the first pipeline A3 is conveying oil, the second oil filter 10 on the first pipeline B9 can be cleaned by starting the air supply device 61. When the first pipeline B9 is conveying oil, the first oil filter 5 on the first pipeline A3 can be cleaned by starting the air supply device 61. By using the first pipeline A3 and the first pipeline B9 in turn and keeping them in reserve, the purpose of circulating and using them can be achieved, thereby further improving the use effect of the filtering system.
[0055] It should be noted that during the above working process, valves not separately specified are closed by default.
[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A pump inlet self-cleaning oil filtration system, comprising an oil tank (1) and a main engine (2), characterized in that: Also includes: At least one first pipeline A (3) installed between the output end of the oil tank (1) and the input end of the main engine (2); Wherein, a first oil filter (5) and an oil pump (4) are installed on the first pipeline A (3); An air supply device (61) connected to an input end of the oil tank (1) via at least one second pipeline A (7); The second pipeline A (7) is connected to the first oil filter (5), a collecting filter (6) is installed on the second pipeline A (7), and the collecting filter (6) is arranged between the oil tank (1) and the first oil filter (5).
2. A pump inlet self-cleaning oil filtration system according to claim 1, characterized in that: The air supply device (61) comprises an air compressor and an air storage tank, and the output pressure of the air compressor is greater than or equal to 6 bar.
3. A pump inlet self-cleaning oil filtration system according to claim 1, characterized in that: The oil inlet end and the oil outlet end of the first oil filter (5) are in the same straight line, and the opening of the internal filter element of the first oil filter (5) faces the oil inlet.
4. A pump inlet self-cleaning oil filtration system according to claim 1, characterized in that: The first oil filter (5) is a basket filter, and the oil inlet end and the oil outlet end of the first oil filter (5) are in the same straight line.
5. A pump inlet self-cleaning oil filtration system according to claim 1, characterized in that: The first pipeline A (3) is respectively installed with a valve one (31) and a valve two (32), and the valve one (31) and the valve two (32) are respectively arranged at the oil inlet end and the oil outlet end of the first oil filter (5).
6. A pump inlet self-cleaning oil filtration system according to claim 1, characterized in that: The second pipeline A (7) is respectively installed with a valve three (71) and a valve four (72), and the valve three (71) and the valve four (72) are respectively arranged at the oil inlet end and the oil outlet end of the first oil filter (5).